4104
INFORMATION
REPORTS
NUMBER 85-8 40
FISH DIVISION
t?I
O4
Oregon Department of Fish and Wildlife
U
1984 Clam Studies
1984
CLAM STUDIES
STUDIES
1984 CLAM
by
by
Tom
Torn Gaumer
Gaurner
INFORMATION REPORT 85-8
Oregon Department
Department of
of Fish
Fish and
and Wildlife
Oregon
Wildlife
Marine
Region Marine Region
Newport,
Oregon Newport, Oregon
October 15,
15, 1985
1985 October
CONTENTS CONTENTS
Pa
INTRODUCTION
INTRODUCTION .............. . .
Recreational
Recreational Clam
Clam Fishery.
Fishery
Bay........
.
Tillamook Bay
Iillamook
......................................................
Garibaldi
Flat ..
.
Garibaldi Flat
.................................................
Bay Ocean Flat
Flat ...
.
BayOcean
.................................................
Netarts
Bay ...........
.
NetartsBay
........................................................
HappyCamp
Happy
Camp •.•...•..
.....................................................
Cape
Lookout Sand
Sand Spit
Spit..........................................
Cape Lookout
Nestucca
Ba~ ................
.
NestuccaBay
.......................................................
LittleNestucca
Little
Nestucca Flat
Flat............................................
.
YaguinaBay
Yaqui
na Bay ...•....•.••..........•.•.
........................................................
Bridge Bed .........
..
BridgeBed
.....................................................
Breakwater
Bed ...........
.
BreakwaterBed
.................................................
IdahoPoint
Idaho
Point .....................................................
..•••.•...
Northwest
Plant •.
Northwest Gas
Gas Plant
............................................
Coquille
Point .•.•.
CoguillePoint
.................................................
Critser's
Island .•.......•.
Critser's Island
...............................................
Alsea Bay
Bay.......
.
Alsea
..........................................................
North
Shore .•
NorthShore
....................................................
Bayshore.
Bayhore .......................................................
Softshell
Bed •..
Softshell Clam
Clam Bed
.............................................
S; uslaw Bay
Bay .......•..•..
Siuslaw
........................................................
............................................................
Mouth ........
..... . North Fork
Fork Flat
Flat ..•.
North
................................................
UmpguaEstuary
Umpqua Estuary.....................................................
......• Bolin
Bo
1in Island
Is 1and •.•..•. Coos Bay...........................................................
.......•..•.... CoosBay
Hanson's Marina
Marina ....
Hanson's
................................................
Charleston Triangle
Triangle ..
Charleston
............................................
Charleston
Charleston Flat
Flat ...•..
................................................
PetersonFlat
Peterson Flat .......
.
..................................................
PigeonPoint
Pigeon Point ..•.••...
...................................................
Sitka
Flat •..•........•.
SitkaFlat
.....................................................
Empi re F1at ....................................................
•..•
EmpireFlat
North Spit ....
NorthSpit
.....................................................
Clam Is 1and .•.
ClamIsland
....................................................
Coquille Estuary
Estuary ..
Coguille
...................................................
Commerc
i a1 Clam
Clam Harvest ..................
.
Commercial
.................................................
Commercial
Commercial Clam
Clam Fishery
Fishery by
by Mechanical
Mechanical Means
Means ........................
.. Vaguina Bay .•..•.....•..•..•.....
Yaguina
....................................................
Coos
Bay .........•..........•...
.......................................................
CoosBay
Commercial
Fishery by
by Hand
Hand.....................................
Commercial Clam
Clam Fishery
Experimental
Clam Fishery
Fishery.......................................
Offshore Clam
Experimental Offshore
1
11 2
2 2
2
33 3
3
3
3
3
3
44 4
4
4
44 55 55 55 55 55 55 66 66 66 6
6
66 66 6
6
77 77 77 77 77 77 77 77 77 88 88 88 88 88 9
9
9
9
99 10
10 Special
Studies ...................
.
SpecialStudies
.........................................................
Hatchery
Clams ...
Hatchery Stock
Stock Enhancement;
Enhancement; Manila
Manila Littleneck
Littleneck Clams
................
Netarts
......................................................
Netarts Ba
Bax....
Till amook Bay
Bay...................................................
Tillamook
VaguinaBay
Y
ag u; naB a~ ..
.
....................................................
Coos
Bay......
.
CoosBay
.......................................................
Natural Recruitment
Studies ...
Natural
Recruitment Studies
........................................
YaguinaBay
Yaguina
Bay .....
.
....................................................
Bay
Ti 11 amook Bay
Tillamook
NehalemBay
Nehalem Bay ..•••..
....................................................
Sign Replacement •...•.•......•...•....••.•.
...................................................
10
10
10
10
10
10
10
10
11
11
11
11
11
11
11
11
12
12
12
12
ACKNOWLEDGMENT ..
ACKNOWLEDGMENT
..........................................................
12
12
APPENX ................................................................
APPENDIX...
.... . . . . . ...... . . . . . . .... .... . . .... . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . ....
13
iEi;1* TABLES
Number
Number
Page
11 Peak Counts
Counts of
of Clam
Clam Diggers
Diggers .....................................
Peak
14 14
2
Annual Summary
Summary of
of Recreational
Recreational Interview
Interview Data
Data -- Tillamook
Tillamook Bay,
Bay,
Annual
Garibaldi
..................................................
Garibaldi Flat
Flat ..
"... ""."""""""""""""""",,.,,""""""""""""""""""""""
15
15
2
Annual Summary
Summary of
of Recreational
Recreational Interview
Interview Data
Data -- Tillamook
Tillamook Bay,
Bay,
Annual
Garibaldi Flat
Garibaldi
Flat (Continued)
(Continued) ......................................
......................................
16
16
3
Annual Summary
Summary of
of Recreational
Recreational Interview
Interview Data
Data -- Tillamook
Tillamook Bay,
Bay,
Annual
BayOcean
.......................................................
Bay Ocean"""""""""""."""""""""""""""""""""""""".,,"""""",,.,,""",,..
17
17
Annual
Summary of
of Recreational
Recreational Interview
Interview Data
Data -- Netarts,
Netarts,
Annual Summary
Happy
Camp......................................................
HappyCamp
......................................................
18
18
55 Annual
of Recreational
Recreational Interview
Interview Data
Data -- Netarts,
Netarts,
Annual Summary
Summary of
Cape Lookout
Lookout Sand
Sand Spit
Spit ..........................................
..........•........•........••.•..........
19
19
66 Annual
Summary of
of Recreational
Recreational Interview
Interview Data
Data -- Nestucca,
Nestucca,
Annual Summary
2
2
3
44 .
Little Nestucca
Nestucca Flat
Little
Flat ............................................
.. """"""".""""".,,",, . ,,""""""""""""""",,.,,"""""
77 88 9
9
10
10
11
11
12
12
13
13
14
14
Annual
Interview Data
Yaquina,
Annual Summary
Summary of
Data -- Yaquina,
of Recreational
Recreational Interview
Bridge
......................................................
Sri
dge Bed
Bed""""""""".""""""""."""".".",,.,,",,.,,",,.,,""""""""""""""""
21
21
Annual Summary
Summary of
Recreational Interview
Annual
of Recreational
Interview Data
Data -- Yaquina,
Yaquina,
Breakwater Bed
..................................................
Breakwater
Bed"""""""""""""""."".""""""""""""""""""""",,.,,",,.,,"""
22
22
Annual Summary
Summary of
of Recreational
Recreational Interview
Yaquina,
Interview Data
Data -- Yaquina,
Annual
IdahoPoint
Idaho Point .........................................
".......... "
.....................................................
23
23 Annual
Recreational Interview
Yaquina,
Interview Data
Data -- Yaquina,
Annual Summary
Summary of
of Recreational
Plant .............................................
Northwest Gas
Northwest
Gas Plant"""""""""."""""""""""""""""",,.,,.,,""""""""""""
24
24
Annual Summary
Summary of
of Recreational
Recreational Interview
- Yaquina,
Yaquina,
Annual
Interview Data
Data Coquille Point
Point ..
"...............................................
..................................................
25 25
Annual
Summary of
of Recreational
- Yaquina,
Yaquina,
Annual Summary
Data Recreational Interview
Interview Data
Critseris Island ................................................
................................................
Critser'slsland
26 26
Interview Data
Alsea,
Data -- Alsea,
Annual Summary
Summary of
of Recreational
Recreational Interview
Annual
North Shore.....................................................
NorthShore
.....................................................
27 27
Annual Summary
Summary of
of Recreational
Annual
Recreational Interview
Interview Data
Data -- Alsea,
Alsea,
Bays hare .......
Bayshore
........................................................
28
28
it
15
15
••••••••
it
•••
it
••
it
••••••••••
it
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Alsea,
Data -- Alsea,
Annual
Summary of
of Recreational
Interview Data
Annual Summary
Recreational Interview
Softshe 11 ... Softshell.......................................................
it
16
16
20
20
•••
it
••••
it
•••••••••••••••••••••••••••••••••••
it
•
•
•
•
•
•
29
Annual
Summary of
of Recreational
Interview Data
Data -- Siuslaw,
Recreational Interview
Siuslaw,
Annual Summary
North Fork ......................................................
NorthFork
it • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
it
•••••••••••
,
•
•
•
•
•
•
•
•
30
Number
Number
17
17 Pag
Annual Summary
Surmary of
Recreational Interview
Annual
of Recreational
Interview Data
Data -- Umpqua,
Umpqua, BolinIsland
B01 i n I s 1an d.....................
.....................................................
it
18
18 it
•
it
it
••
it
it
it
it
it
•
it
it
••
it
•
it
••
it
••
it
••
it
it
••
it
••••••
it
it
it
Annual
Annual Summary
Summary of
of Recreational
Recreational Interview
Interview Data
Data -- Coos,
Coos, Hanson's
Hansons
Marina -- South Slough ............................................
19
19 20
20 21
21 22 22
23
23 24
24 25 25
26 26
27 27
28 28
Annual
Summary of
- Coos,
Coos, Charleston
Charleston
of Recreational
Recreational Interview
Interview Data
Data Annual Summary
33 33
Annual Summary
Summary of
- Coos,
Coos, Charleston
Charleston
Annual
of Recreational
Data *
Recreational Interview
Interview Data
Flat .............................................................
34 Annual
Summary of
of Recreational
Recreational Interview
Annual Summary
Interview Data
Data -- Coos,
Coos, Peterson
Peterson
Flat .............................................................
Flat.......................................................................................................................
35 35
Annual
Annual Summary
Summary of
Recreational Interview
Interview Data
Data - Coos,
Coos, Pigeon
Pigeon
of Recreational
Point
Point ............................................................
36 36
Annual
Annual Summary
Summary of
of Recreational
Recreational Interview
Interview Data
Data -- Coos,
Coos, Sitka
Sitka
Flat
Flat.........................................................................................................................
.............................................................
37 37
Annual
Annual Summary
Summary of
of Recreational
Recreational Interview
Interview Data
Data -- Coos,
Coos, Empire
Empire
Flat
.............................................................
Flat..........................................................................................................
38
38 Annual Summary
Summary of
of Recreational
Recreational Interview
- Coos,
Coos, North
North
Annual
Interview Data
Data Spit.............................................................
Spit .............................................................
39 39
Annual
Summary of
of Recreational
- Coos,
Coos, Clam
Clam
Interview Data
Data Annual Summary
Recreational Interview
Island ...........................................................
40 Annual
Summary of
of Recreational
Data -- Coquille,
Coquille,
Annual Summary
Recreational Interview
Interview Data
Bandon
Bandon Softshell
Softshe 11..................................................
. . . . •. . . . . . . • . . . . . . . . . .. . . . . . . . . • . . •. • . • • • . . . . • .
41
41 Summary
of Pounds
Pounds of
Bay Clams
Clams Reported
Harvested in
in Oregon,
Oregon,
Reported Harvested
Summary of
of Bay
42 42
Summary
of Reported
Reported Commercial
Commercial Harvest
of Bay
Bay Clams
in Major
Harvest of
Clams in
Major
Summary of
Oregon Estuaries,
Estuaries, 19_-84........................................
19D-84 ........................................
30
30 32
32 Tri
angl e....
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .
Triangle
.........................................................
1970-84 ..........................................................
1970-84..........................................................
29
29 31
31
43
43 Summary
of Population
Population and
and Biomass
Biomass Estimates
Estimates for
for Yaquina,
Yaquina, Tillarnook,
Tillamook,
Summary of
1984 ...........................................
and Nehalem Bays, 1984...........................................
and
44
44 FIGURES FIGURES
Number
Number 11 2
2
3
3
44 55 66 77 fage
Age Composition
Composition of
of Commercial
Commercial Subtidal
Subtidal Gaper
Gaper Clam
Clam Harvest,
Harvest, Age
Area 2,
2, Coos
Coos Bay,
Bay, 1975-84
1975-84.......................................
Area
.......................................
45
45 Age Composition
Composition of
of Commercial
Subtidal Native
Native Littleneck
Littleneck Clam
Clam Age
Commercial Subtidal
Harvest, Tillamook
Tillamook Bay,
Bay, 1984
1984......................
........ ......
Harvest,
....................................
46
46 Age
Composition of
of Commercial
Commercial Subtidal
Subtidal Cockle
Cockle Clam
Clam Harvest,
Harvest,
Age Composition
Bay, 1984
1984............
.............. ........... ... ......
Tillamook Bay,
.............................................
47 Age
of Commercial
Subtidal Native
Native Littleneck
Littleneck Clam
Age Composition
Composition of
Commercial Subtidal
Clam Harvest,
Harvest, Nehalem
Nehalem Bay,
Bay, 1984
1984......................................
......................................
48 48
Summary of
of Manila
Manila Littleneck
Littleneck Clam
Clam Releases
Releases in
in Tillamook
Tillamook Bay,
Bay,
Summary
1984 ............................................................
1984..
. . . . . .. . . . .... . . . . . .... . . .... . . . . . . . .... . .... . . . .. . . . . . . . . . . . . . . . . . . . ....
49 Subtidal Survey
Survey Areas
Areas in
in Nehalem,
Nehalem, Tillamook,
Tillamook, and
and Yaquina
Yaquina Bays,
Bays,
Subtidal
1984...
. . . . . . . ... . . ... . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . .... . . .... . . ... .... ......
1984
............................................................
50 Age
of Subtidal
Subtidal Gaper
Gaper Clams,
Clams, Area
Area 2,
2, Yaquina
Yaquina Bay,
Bay,
Age Composition
Composition of
1975-1984
1975-1984........................................................
. . . . . . . . . . . . . . . . . ... . . . . .. . . . . ... . . .. . . . . . . .. . . . . .. . . .. .
8
8
9. 9.
10.
10.
11.
11.
12.
12,
51
51 Age
of Subtidal
Subtidal Butter
Butter Clams,
Clams, Tillamook
Tillamook Bay,
Bay, 1976,
1976, Age Composition
Composition of
1984
1984 ............................................................
............................................................
52 Age Composition
Composition of
of Subtidal
Subtidal Cockle
Cockle Clams,
Clams, Tillamook
Tillamook Bay,
Bay, 1976,
1976, Age
1984 ............................................................
............................................................
53 53
Age Composition
Composition of
of Subtidal
Subtidal Gaper
Gaper Clams,
Clams, Tillamook
Tillamook Bay,
Bay, 1976,
1976, Age
1984 ............................................................
54 Age Composition
Composition of
of Subtidal
Subtidal Littleneck
Littleneck Clams,
Clams, Tillamook
Tillamook Bay,
Bay,
Age
1976, 1984
1976,
1984......................................................
......................................................
55
55 Age Composition
Composition of
of Subtidal
Subtidal Native
Native Littleneck
Littleneck Clams,
Clams, Nehalem
Nehalem Bay,
Bay,
Age
1983-1984 .......................................................
1983-1984.
. .. . . .. . . . . ... .. .. .. . . . . . . . . . . . . . . .. . . . . . . . . ... . . .. . . . . .
56 56
1984 BAY
BAY CLAM
CLAM SUMMARY
SUMMARY REPORT
REPORT
1984
INTRODUCTION
INTRODUCTION
This
the results
results of
of our
our bay
bay clam
clam studies
studies in
in
This report
report summarizes
summarizes the
19~4.
19B4,
Activities summarized
summarized include
include monitoring
monitoring of
of the
the recreational
recreational and
and commercial
commercial
Activities
clam
fisheries, hatchery
hatchery stock
clam fisheries,
stock enhancement
enhancement studies,
studies, natural
natural recruitment
recruitment
studies, and
and miscellaneous other
other projects.
projects.
studies,
Recreational Clam
Clam Fishery
Fishery
Recreational
Recreational clam
Recreational
clam interviews
interviews are
are conducted
conducted annually
annually on
on each
each of
of the
the major
major
clam harvesting
harvesting tideflats
tideflats of
of the
the Tillamook,
Tillamook. Netarts,
Netarts, Nestucca,
Nestucca. Yaquina,
Yaquina, Alsea,
Alsea,
Siuslaw,
Umpqua. Coos,
and Coquille
Coquille estuaries.
estuaries.
Siuslaw, Umpqua,
Coos, and
Sampling of clam diggers
diggers is
is usually
usually conducted
conducted by
by two
two shellfish
shellfish staff.
staff.
Sampling
A
A
count
is made
on each
each tideflat
tideflat at
at low
low tide;
tide; this
this equates
equates to
to aa peak
peak
count of
of diggers
diggers is
made on
digger
count for
for that
that day.
day.
digger count
An
is made
made to
to visit
visit each
each tideflat
tideflat at
at least
least
An effort
effort is
two
in the
the spring
spring and
and again
again in
in midsummer.
midsummer.
two times
times per
per season,
season, in
In
we
In the
the past
past we
have
had staff and time to
to cover
cover the
the major
major clam
clam beds
beds 33 to
to 44 times
times per
per season.
season.
have had
A sample
sample of
of the
the harvest
harvest is
is measured
measured and
and aged.
aged.
A
We
the height
tleight of
of the
the
We measure
measure the
cockle clam
clam and
and length
length of
of butter,
butter, gaper,
gaper, littleneck,
littleneck. and
and softshell
softshell clams.
clams.
cockle
We
We
age the
species of clams
age
the various
various species
clams by
by counting
counting annual
annual growth
growth checks
checks on
on the
the
shell
surface.
shell surface.
The
annual checks
checks is
is back
back calculated
calculated to
to give
give
The total
total number of annual
year of
of recruitment.
recruitment.
year
Our 1984
1984 recreational
recreational clam
clam interviews
interviews revealed
revealed aa continued
continued decrease
decrease in
in
Our
digging
most of
of the
the surveyed
surveyed tideflats
tideflats (Table
(Table 1).
1).
digging effort
effort on
on most
Only
on the
the
Only on
Siuslaw did we observe a noticeable increase
increase in
in effort.
effort.
Largest decreases
decreases in
in peak
peak digger
digger counts
counts were
were observed
observed for
for the
the bridge
bridge bed
bed
Largest
on
Yaquina Bay
(275 to
on Yaquina
Bay (275
to 84
84 diggers).
diggers), and
and Happy
Happy Camp
Camp on
on Netarts
Netarts Bay
Bay (478
(478 to
to 200
200
diggers).
diggers).
An
phenomenon has
has occurred
during the
the past
past several
several years
in aa
An unexplained
unexplained phenomenon
occurred during
years in
number of
of our
our estuaries.
estuaries.
number
Gaper
clams generally
generally occur
occur in
in greatest
greatest abundance
abundance in
in
Gaper clams
areas containing
a substrate
substrate of
of gravel,
gravel, shell
shell and
and some
some sand.
sand.
areas
containing a
preference applies
applies to
to both
both intertidal
intertidal and
and subtidal
subtidal stocks.
stocks.
preference
This
substrate
This substrate
Since
1975 we
we have
have
Since 1975
had little
little or
or no
no recruitment
recruitment of
of gaper
gaper clams
clams in
in this
this type
type of
of substrate.
substrate.
had
example of
of this
this is
is at
at the
the popular
popular Happy
Happy Camp
Camp and
and bridge
bridge beds.
beds.
example
An
An
Poor recruitPoor
recruit­
ment
undoubtedly contributed
contributed to
to the
the reduced
reduced effort
effort at
at these
these two
two clam
clam beds.
beds. On
ment undoubtedly
On
the
hand, we
have evidence
in areas
areas containing
a
the other
other hand,
we have
evidence of
of fair
fair recruitment
recruitment in
containing a
sand-mud substrate
in great
sand-mud
substrate where
where gaper
gaper clams
clams are
are generally
generally not
not found
found in
great
abundance.
abundance.
included catch/effort,
species
Interview
Interview data
data collected
collected included
catch/effort, digger
digger origin,
origin, species
composition, and
and age,
age, and
and size
size composition.
composition.
composition,
sented in
sented
in Tables
Tables 2-27.
2-27.
These
data are
are tabulated
tabulated and
and prepre­
These data
Summaries for
for each
each tideflat
tideflat are
are presented
presented in
in the
the text
text
Summaries
and
arranged by
by bay
bay from
from north
north to
to south.
south.
and are
are arranged
Ti
11 amook Bay
Tillamook
Bay
Garibaldi Flat.
Flat.
Garibaldi
Catch/effort
data revealed
revealed that
that clams/trip
clams/trip and
and clams/
clams/
Catch/effort data
hour
Department's regulation
regulation
hour have
have remained
remained relatively
relatively constant
constant since
since the
the Department's
in 1977
1977 which
which reduced
reduced the
the bag
bag limit
limit from
from 36
36 to
to 20
20 clams.
clams.
change
change in
in 1978
Cockle
Cockle clams
clams declined
declined from
from 66.6%
66,6% of
of the
the total
total recreational
recreational catch
catch in
1978
to
of the
the catch
catch in
in 1981
1981 (Table
(Table 2).
2).
to 24.2%
24.2% of
Since 1981
1981 the
the catch
catch has
has stabilized
stabilized
Since
and
figures show
show 28.5%
28.5% of
of the
the harvest
harvest being
being cockle
cockle clams.
clams.
and the
the 1984
1984 figures
This
This
reflects
in cockle
availability or
pref­
reflects a
a dramatic
dramatic change
change either
either in
cockle clam
clam availability
or digger
digger pref
erence.
erence.
late 1970's
believe the
harvest reduction
reduction is
is due
to aa
Since
Since the
the late
1970's we
we believe
the harvest
due to
abundance intertidally.
intertidally.
decrease
in cockle
cockle abundance
decrease in
Butter clams,
clams, on
on the
the other
other hand,
hand,
Butter
have
increased from
of the
the harvest
harvest in
in 1977
1977 to
to 38.8%
38.8% in
in 1984.
1984.
have increased
from 10.5%
10.5% of
-2-2­
Percentage
Percentage
of
harvest of
gaper clams
the bag
bag in
in 1983
to 0.7%
in 1984
of harvest
of gaper
clams went
went from
from 4.5%
4.5% of
of the
1983 to
0.7% in
1984
and
littleneck clams
clams showed
showed aa gradual
gradual increase
increase in
in the
the digger
digger harvest.
harvest.
and native
native littleneck
Mean
size of
of gaper
gaper clams
in 1984
similar to
to 1983
(108.0 vs.
vs. 107.9
Mean size
clams in
1984 was
was similar
1983 (108.0
107.9
mm).
mm).
Butter
increases in
in mean
Butter and
and littleneck
littleneck clams
clams exhibited
exhibited increases
mean size,
size, and
and mean
mean
size
to decrease
decrease in
in 1984.
1984.
size of
of cockle
cockle clams
clams continued
continued to
Bay
Bay Ocean
Ocean Flat.
Flat.
Unlike
the Bay
Unlike the
the catch/effort
catch/effort on
on Garibaldi
Garibaldi Flat,
Flat, the
Bay Ocean
Ocean
clam
bed has
has experienced
experienced aa dramatic
dramatic fluctuation
fluctuation in
in clam
clam production.
production.
clam bed
Catch/
Catch/
trip
and catch/hour
low value
less
trip and
catch/hour had
had declined
declined steadily
steadily since
since 1976,
1976, to
to a
a low
value of
of less
than
animals per
per trip
trip in
in 1982
1982 (Table
(Table 3).
3).
than 0.1
0.1 animals
A
reversal of
of this
this trend
trend was
was
A reversal
seen in
in 1983
and in
in 1984
1984 catch/effort
catch/effort increased
increased to
to 14.6
14.6 clams/trip
clams/trip primarily
primarily
seen
1983 and
because
several successful
successful clam
clam digging
digging parties.
parties.
because of
of several
Total
harvest for
for the
the 11
11
Total harvest
diggers interviewed
1984 showed
showed 161
161 clams
clams harvested,
harvested, all
all of
of which
which were
were
clam diggers
interviewed in
in 1984
cockle
clams.
cockle clams.
Historically,
cockle clams
up over
harvest
Historically, cockle
clams have
have made
made up
over 75%
75% of
of the
the harvest
from this
this bed.
bed.
from
Netarts
Netarts Bay
Bay
Happy Camp.
Camp.
Happy
Clam
digging on
the Happy
clam bed
bed continued
to be
be very
Clam digging
on the
Happy Camp
Camp clam
continued to
very
good
good in
in 1984
1984 with
with 12.0
12.0 clams/trip
clams/trip being
being taken
taken (Table
(Table 4).
4).
Since
gaper clams
clams
Since gaper
made
up over
success rate
rate suggests
suggests most
made up
over 89.5%
89.5% of
of the
the harvest,
harvest, this
this success
most diggers
diggers
were getting
getting their
their daily
daily bag
bag limit
limit of
of 12
12 gapers.
gapers.
were
gapers
of the
the 1975
1975 year-class.
year-class.
gapers were
were of
Nearly
of the
the harvested
harvested
Nearly 100%
100% of
The gapers
gapers averaged
averaged 100.3
100.3 mm
mm in
in size,
size, aa
The
decrease of
of 1.6
1.6 mm
mm since
since 1983.
1983.
decrease
Cape
Lookout Sand
Sand Spit.
Spit.
Caps Lookout
Clam
diggers using
using the
the Cape
Cape Lookout
Lookout Sand
are
Clam diggers
Sand Spit
Spit are
the Netarts
Netarts boat
boat basin.
basin. As
with Happy
Happy Camp,
Camp, the
the
interviewed
interviewed as
as they
they return
return to
to the
As with
Cape
at aa relatively
Cape Lookout
Lookout Sand
Sand Spit
Spit continued
continued to
to produce
produce clams
clams at
relatively constant
constant
rate.
rate.
Catch/trip
and catch/hour
and 15.8
Catch/trip and
catch/hour averaged
averaged 19.2
19.2 and
15.8 clams,
clams, respectively
respectively
-3­
(Table 5).
(Table
5).
As
in previous
previous years,
cockles were
were the
the principal
principal species
species collected
collected
As in
years, cockles
representing 78%
78% of
of the
the take.
take.
representing
Gaper,
butter, native
native littleneck,
littleneck, and
and softshell
softshell
Gaper, butter,
clams
up the
the remainder
remainder of
of the
the bag.
bag.
clams made
made up
Unlike Happy
Happy Camp,
Camp, most
most of
of the
the gaper
gaper
Unlike
clams (94.4%)
(94.4%) were
were of
of year-classes
year-classes younger
younger than
than 1975.
1975.
clams
The cockle
cockle clams
clams averaver­
The
aged
aged 70.0
70.0 mm
rim in
in size
size and
and were
were dominated
dominated by
by the
the 1980
1980 and
and 1981
1981 year-classes.
year-classes.
Nestucca Bay
Bay
Nestucca
Little
Nestucca Flat.
Flat.
Little Nestucca
After
a relatively
relatively poor
poor digging
digging year
in 1981,
1981, both
both
After a
year in
1983
and 1984
back up
up to
a respectable
respectable 28.3
and 22.4
1983 and
1984 showed
showed catch/effort
catch/effort back
to a
28.3 and
22.4
clams/trip,
respectively (Table
(Table 6).
6).
clams/trip, respectively
Softshell
clams were
were the
the only
only species
species
Softshell clams
taken and
and averaged
averaged 76.6
76.6 mm
mm in
in size.
size.
taken
Yaqjja
By
Yaguina Bay
Bridge Bed.
Bridge
Bed.
in
in 1984.
1984.
Catch/effort for
for this
this tideflat
tideflat revealed
revealed aa continued
continued decline
decline
Catch/effort
The 7.2
7.2 clams/trip
clams/trip was
was the
the lowest
lowest ever
ever recorded
recorded and
and 'the
5.2 clams/
clams/
The
the 5.2
hour
also aa record
record low
low (Table
(Table 7).
7).
hour was
was also
In 1984,
gaper clams
clams comprised
comprised over
over 80%
80%
In
1984, gaper
of the
the harvest
harvest and
and averaged
averaged 105.6
105.6 mm
mm in
in size.
size.
of
1975 year-class.
1975
year-class.
All of
of the
the gapers
gapers were
were of
of the
the
All
Most
of this
this fishery
fishery occurs
occurs on
on the
the gravel
gravel island
island under
under the
the
Most of
101 Highway
101
Highway Bridge.
Bridge.
For the
the past
past several
several years
this area
area has
has supported
supported one
one of
of
For
years this
the
efforts of
of any
any of
of our
our Yaquina
Yaquina Bay
Bay tideflats.
tideflats.
the heaviest
heaviest digging
digging efforts
Extremely
Extremely
high survival
set provided
provided the
the digger
digger excellent
high
survival of
of the
the 1975
1975 year-class
year-class gaper
gaper set
excellent
digging
digging for
for seven
seven years,
years, but
but the
the flat
flat in
in 1983
1983 started
started showing
showing the
the effects
effects of
of
this heavy
heavy digging
digging pressure.
pressure.
this
Breakwater Bed.
Bed.
Breakwater
Unlike
the bridge
bridge bed,
bed, catch/effort
catch/effort on
on the
the breakwater
breakwater
Unlike the
has remained
remained relatively
relatively constant
constant for
for the
the past
past several
several years
years (Table
(Table 8).
8).
has
is
limits the
the digging
digging pressure
pressure on
on this
this area.
area.
is strictly
strictly by
by boat
boat which
which limits
over
the clams
clams harvested
harvested were
were gaper
gaper clams.
clams.
over 71%
71% of
of the
in size.
in
size.
In
In 1984
1984
The gapers
gapers averaged
averaged 96.3
96.3 rim
mm
The
No single
single year-class
year-class dominated
dominated the
the harvest.
harvest.
No
-4­
-4-
Access
Access
This
is one
one clam
clam bed
bed
This is
where some
some recruitment
recruitment of
of gaper
gaper clams
clams has
has occurred
occurred every
every year
year since
since 1975.
1975.
where
Idaho
Point.
Idaho Point.
In
there was
was aa slight
slight increase
increase in
in catch/effort
catch/effort
In 1984
1984 there
observed
this clam
clam bed
bed with
with 17,1
17.1 clams/trip
clams/trip being
being taken
taken (Table
(Table 9).
9).
observed on
on this
The
The
clam
bed is
is subjected
clam bed
subjected to
to a
a very
very intensive
intensive cockle
cockle fishery
fishery where
where over
over 97%
97% of
of the
the
is this
this species.
species.
take
take is
The cockles
cockles averaged
averaged 52.3
52.3 mm,
mm, aa reduction
reduction of
of 0.3
The
0.3 mm
mm
since
and the
the smallest
smallest mean
mean size
size ever
ever recorded
recorded for
for this
this tideflat.
tideflat.
since 1983
1983 and
Since
Since
1977,
has been
been aa gradual
gradual decrease
decrease in
in mean
mean size
size of
of the
the cockle
cockle suggesting
suggesting
1977, there
there has
possible overharvest.
overharvest.
possible
1982 and
and 1983
1983 year-classes
year-classes were
were dominant
dominant
Cockles of
of the
the 1982
Cockles
harvest.
in the
in
the 1984
1984 harvest.
Northwest Gas
Gas Plant.
Plant.
Northwest
The
The harvest
harvest of
of clams
clams from
from this
this clam
clam bed
bed showed
showed aa
continued
upturn in
in catch/effort
catch/effort in
in 1984
1984 (Table
(Table 10).
10).
continued remarkable
remarkable upturn
averaged
in 1984
1984 compared
compared to
to 9.5
9.5 in
in 1983.
1983.
averaged 15.1
15.1 clams/trip
clams/trip in
Clam diggers
diggers
Clam
Species
composition
Species composition
data
revealed that
that over
over 94%
94% of
of the
the clams
clams harvested
harvested were
were cockle
cockle clams,
clams, averagaverag­
data revealed
ing
in size,
decrease of
of 0.4
0.4 mm
mm since
since 1983.
1983.
ing 56.6
56.6 mm
mm in
size, a
a decrease
The
fishery was
was pripri­
The fishery
marily on
on one,
one, two
two and
and three-year-old
three-year-old cockles;
cockles; over
over 36%
36% were
were of
of the
the 1982
marily
1982
year-class.
year-class.
Coguille Point.
Coquille
Point.
No clam
clam diggers
diggers were
were interviewed
interviewed on
on this
this tideflat
tideflat in
in
No
1984
trab\eu) .
1984(1aejt)
Critser's
Island.
Critser's Island.
In
interviewed 14
14 clam
clam diggers
diggers that
that took
took an
an
In 1984
1984 we
we interviewed
average of
softshells/digger (Table
(Table 12).
12).
average
of 35.1
35.1 softshells/digger
The
clams averaged
averaged 93.0
93.0 mm
mm in
in
The clams
size.
size.
A1sea Bay
North
North Shore.
Shore.
No clam
clam diggers
diggers were
were interviewed
interviewed on
on this
this tideflat
tideflat in
in 1984
1984
No
(Table
13).
(Table 13).
-5­
Bayshore.
Bayshore.
We interviewed
interviewed 17
17 diggers
diggers on
on this
this tideflat
tideflat and
and they
they averaged
averaged
We
9.2
since 1983
1983 (Table
(Table 14).
14). Over
Over
9.2 clams/digger,
clams/digger, a decrease
decrease of
of 4.0
4.0 clams/digger since
98%
98% of
of the
the clams
clams taken
taken were
were cockles
cockles that
that averaged
averaged 76.3
76.3 mm.
m.
of the
the 1981
1981 year-class.
year-class.
clams
clams were of
Over 35%
35% of
of the
the
Over
This
primarily subtidally
subtidal1y
This fishery
fishery occurs
occurs primarily
with
taken with long
long handled
handled rakes
rakes made
made out
out of
of modified
modified pitch
pitch forks.
forks.
with clams taken
Softshe11
Clam Bed.
Bed.
Softshell Clam
The softshell
softshe11 clam
clam diggers
diggers averaged
averaged 27.6
27.6 clams!
c1ams/
person from
tidef1at (Table
(Table 15).
15).
person
from this tideflat
The
in size.
size.
The clams
clams averaged
averaged 94.6
94.6 mm
m in
Siuslaw
Bay
Siuslaw Bay
Mouth.
Mouth.
A small
small sport
sport fishery
fishery for
for huge
huge gaper
gaper clams occurs
A
occurs on
on the
the north
north
side
to Siuslaw
Siuslaw Bay.
Bay.
side of
of the
the entrance
entrance to
that averaged
averaged 7.2
7.2 gapers/person.
gapers/person.
that
In 1984 we
interviewed five
five clam
clam diggers
diggers
In
we interviewed
These
averaged 148
148 mm
mm and
and were
were pripri­
These clams
clams averaged
manly 11-year-old
marily
ll-year-01d clams.
clams.
Fork Flat.
Flat.
North Fork
Clam
digging continues
continues to
to be
be excellent
excellent on
on this
this clard
c1anl bed
bed
Clam digging
where catch/effort
information revealed
revealed 34
34 clams/trip taken
taken (Table
(Table 16).
16). Only
Only
catch/effort information
softshel1
from this
this area
area and
and they
they averaged
averaged 95.0
95.0 mm
mm in
in size.
size.
softshell clams
clams were
were taken
taken from
Although
is very
in this
little impact
impact has
has
Although the
the digging
digging pressure
pressure is
very heavy
heavy in
this area,
area, little
been
the availability
availability or
or size
size of
of the
the clams.
clams.
been observed on the
Umpqua Estuary.
Estuary.
Umpgua
We
the Umpqua
Umpqua estuary
estuary to
to our
our sampling
sampling program
program in
in 1983
1983 due
due to
to its
its
We added
added the
importance as
as aa softshell
softshell clam
clam producer.
producer.
importance
Bolin Island.
Island.
Although our
our sampling
sampling effort
was small,
small, catch/effort
catch/effort data
data
Although
effort was
on Bolin
Bolin Island
Island were
were getting
getting 40.4
40.4 clams
clams per
per digger
digger which
which was
was
revealed diggers
revealed
diggers on
4.4 clams/digger
clams/digger over
over the
the bag
bag limit
limit (Table
(Table 17).
17).
4.4
-6­
Coos Bay.
BaX.
Nine
areas in
in Coos
Coos Bay
Bay were
were added
added to
to our
our sampling
sampling program
program in
in
Nine clam digying
digging areas
1983.
1983.
in the
the future
future will
will depend
depend on
on availability
availability of
of manpower.
manpower.
Sampling
Sampling effort
effort in
Hanson's
Marina.
Hanson's Marina.
We did
not sample
sample clam diggers
diggers in
in this
this area
area in
in 1984
1984
did not
(Table 18).
18).
(Table
Charleston Triangle.
Triangle.
Charleston
We interviewed
interviewed 32
32 clam
clam diggers
diggers and
and they
they averaged
averaged
We
(Table 19).
19).
18.4
18.4 clams/trip (Table
Over 69%
69% of
of the
the clams
clams harvested
harvested were
were cockle
cockle
Over
mm in
in size.
size.
clams,
averaging 66.3
66.3 mm
clams, averaging
Charleston Flat.
Flat.
Twenty-seven interviewed
interviewed clam
clam diggers
diggers averaged
averaged 16.1
16.1
20).
clams/digger
(Table 20).
clams/digger (Table
Cockle and
and gaper
gaper clams
clams were
were the
the principal
principal species
species
taken
and averaged
averaged 63.2
63.2 mm
mm and
and 105.9
105.9 nii,
mm, respectively.
respectively.
taken and
Peterson Flat.
Flat.
(Table
(Table 21).
21).
Clam
on Peterson
Peterson Flat
Flat averaged
averaged 13.5
13.5 clams/trip
clams/trip
Clam diggers
diggers on
Gaper clams
clams were
were the
the principal
principal species
species taken
taken and
and averaged
averaged 113.7
113.7
mm in
in size.
size.
mm
Pigeon Point.
Point.
We
interviewed 43
43 diggers
diggers and
and they
averaged 15.8
15.8
We interviewed
they averaged
clams/trip (Table
(Table 22).
22).
clams/trip
Butter and
and gaper
gaper clams
clams were
were the
the principal
principal species
species
Butter
taken accounting
accounting for
for 36.4
36.4 and
and 32.7%
32.7% of
of the
the harvest,
harvest, respectively.
respectively.
taken
Sitka
Flat.
Sitka Flat.
No clam diggers
diggers were
were interviewed
interviewed on
on Sitka
Sitka Flat
Flat in
in 1984
1984
No
(Table
(Table 23).
23).
Empire Flat.
Flat.
24).
24).
Clam diggers
diggers on
on Empire
Empire Flat
Flat averaged
averaged 20.0
20.0 clams/trip
clams/trip (Table
(Table
Clam
Littleneck
53.3% of
of the
the harvest.
harvest.
Littleneck clams comprised 53.3%
North Spit.
Spit.
North
We
interviewed 50
50 clam
clam diggers
diggers on
on North
North Spit
Spit and
and they
they
We interviewed
clams/trip (Table
(Table 25).
25).
averaged 14.9
14.9 clams/trip
averaged
Gaper
the principal
principal species
species
Gaper clams
clams were
were the
-7­
taken
harvest, and
111.2 mm in
in size.
size.
taken accounting
accounting for
for 65.5%
65.5% of
of the
the harvest,
and averaging
averaging 111.2
Clam
Island.
Clam Island.
The
interviewed clam diggers
averaged 17.2 clams/trip
The 462
462 interviewed
diggers averaged
from this
clam bed
bed (Table
(Table 26).
26).
from
this clam
Gaper
clams were
were the
the principal
principal spespe­
Gaper and
and cockle
cockle clams
cies
taken making up
up 59.8
59.8 and
and 33.7%
33.7% of
of the
the harvest,
harvest, respectively.
respectively.
cies taken
The gapers
gapers
and
averaged 121.0
121.0 and
and 76.8
76.8 mm
mm in
in size,
size, respectively.
respectively.
and cockles
cockles averaged
Coquille
Estuary.
Coguille Estuary.
The
The Coquille
Coquille estuary
estuary was
was the
the most
most southern
southern estuary
estuary surveyed
surveyed for
for clam
clam
diggers.
diggers.
The diggers
averaged 36.0
(Table
The
diggers averaged
36.0 clams/trip;
clams/trip; all
all were
were softshells
softshells (Table
27).
Commercial
Clam Harvest
Harvest
Commercial Clam
In 1984,
120,574 pounds
pounds of
of clams
clams reported
reported to
to be
be commercially
commercially
In
1984, there
there were
were 120,574
harvested
in Oregon1s
estuaries (Table
(Table 28).
28).
harvested in
Oregon's estuaries
(41.9%) were
(41.9%)
were gaper
gaper clams.
clams.
total gaper
gaper harvest.
harvest.
total
Of this total,
total, 50,573
50,573 pounds
pounds
Coos Bay produced 50,304 pounds (99.5%)
(99.5%) of the
Other clams
clams harvested
harvested coastwide
coastwide were
were native
native littlenecks
littlenecks
Other
(46,874
(17,919 lbs),
lbs), butters
butters (4,842
(4,842 lbs),
lbs), and
and softshells
softshells (366
(366
(46,874 lbs),
lbs), cockles
cockles (17,919
lbs).
lbs).
Twenty-seven fishermen
fishermen reported
reported landings
landings in
in 1984,
1984, ten
ten less
less than
than in
in
Twenty-seven
1983.
1983.
Seven
landings were
were made
made in
in 1984,
1984, 107
107 less
less than
than in
in 1983.
1983.
Seven hundred
hundred four
four landings
Coos Bay
Bay produced
produced the
in 1984
lbs reported
reported (Table
(Table
Coos
the most
most clams
clams in
1984 with
with 54,763
54,763 lbs
29).
29).
Tillamook
and Nehalem
Nehalem bays
bays produced
produced 42,663
42,663 lbs,
lbs, 23,069
23,069 lbs,
lbs, respecrespec­
Tillamook and
tively.
tively.
Yaquina
produced minor
minor poundages
poundages of
of clams.
clams.
Vaquina and
and $iuslaw
Siuslaw bays
bays produced
Commercial
Fishery by
by Mechanical
Mechanical Means
Means
Commercial Clam
Clam Fishery
Yaguina
Bay.
Vaquina Bay.
No
harvesting permits
permits were
were issued
issued for
for
No mechanical
mechanical clam harvesting
Yaquina
Bay in
in 1984.
1984.
Vaquina Bay
-8­
Coos
Bay.
Coos Bay.
We
issued five
five commercial
commercial clam
clam harvesting
harvesting permits
permits for
for Coos
Bay
We issued
Coos Bay
in
six were
were issued
issued in
in 1983.
1983.
in 1984;
1984; six
Of the
the five
five permits
permits issued,
issued, two
two were
were used
used
and
in aa production
33,698 pounds
pounds of
of clams.
clams.
and resulted
resulted in
production of
of 33,698
harvested,
(89.3%) were
gaper clams.
clams.
harvested, 30,101
30,101 pounds
pounds (89.3%)
were gaper
Of the
the 33,698
33,698 pounds
pounds
Of
Fishermen averaged
Fishermen
averaged 171
171
lbs/trip
average of
of $0.66/lb.
$0.66/lb.
lbs/trip and
and received
received an
an average
The
gaper clams
harvested in
in the
area averaged
averaged 139.9
in size
The gaper
clams harvested
the permit
permit area
139.9 mm
mm in
size
and were
primarily of
of the
the 1973,
1973, 74
74 and
and 75
75 year-classes
year-classes (Figure
(Figure 1).
1).
and
were primarily
Clams
Clams
harvested in
in 1983
1983 from
from the
the same
same area
area averaged
averaged 137.2
137.2 mm
mm in
in size.
size.
harvested
Commercial
by Hand
Hand
Commercial Clam
Clam Fishery
Fishery by
Commercial
lbs of
Commercial clam
clam fishermen
fishermen harvested
harvested a
a reported
reported 86,876
86,876 lbs
of clams
clams by
by
hand in
in Oregon's
estuaries in
in 1984.
1984.
hand
Oregonts estuaries
Many
of these
clams were
subtidally
Many of
these clams
were taken
taken subtidally
in
bays where
a reported
reported 42,663
42,663 lbs,
lbs, 23,069
23,069 lbs,
lbs,
in Tillamook,
Tillamook, Nehalem,
Nehalem, and
and Coos
Coos bays
where a
and
lbs, respectively,
were taken.
taken. Tillamook
Bay landings
landings were
werepripri­
and 21,065
21,065 lbs,
respectively, were
Tillamook Bay
marily
littleneck and
and cockle
landings were
native
marily littleneck
cockle clams;
clams; Nehalem
Nehalem Bay
Bay landings
were entirely
entirely native
littlenecks,
and Coos
Bay landings
landings were
were primarily
primarily gapers.
gapers.
littlenecks, and
Coos Bay
Age composition
composition for
commercially harvested
harvested Tillamook
littlenecks and
and
Age
for commercially
Tillamook Bay
Bay littlenecks
cockles revealed
revealed that
that the
the 1979-81
1979-81 year-classes
year-classes were
were predominant
predominant in
in the
the take
take
cockles
3).
(Figures 2,
2, 3).
(Figures
The littleneck
littleneck clams
clams averaged
averaged 45.6
45.6 mm
mm and
and the
the cockles
cockles averaver­
The
aged
in size.
size.
aged 60.8
50,8 mm
mm in
Age composition
composition of
of native
native littleneck
littleneck clams
clams harvested
harvested in
in
Age
Nehalem
Bay also
also showed
showed the
the 1979-81
1979-81 year-classes
year-classes to
to be
be predominant
predominant (Figure
(Figure 4).
4).
Nehalem Bay
The
littlenecks averaged
averaged 44,6
44.6 mm
mm in
in size.
size.
The littlenecks
The littleneck
littleneck clams
clams brought
brought an
an average
average of
of $1.03/lb
$1.03/lb to
to the
the fishermen;
fishermen;
The
gapers
and cockles
brought $0.33/lb
$0.33/1b and
and $0.43/lb,
$0.43/lb, respectively.
respectively.
gapers and
cockles brought
Experimental
Experimental Offshore
Offshore Clam
Clam Fishery
Fishery
No
offshore clam
clam harvesting
harvesting permits
permits were
were issued
issued in
in 1984.
1984.
No experimental
experimental offshore
-9­
Special
Studies
Special Studies
Manila Littleneck
Littleneck Clams
Clams
Hatchery Stock
Hatchery
Stock Enhancement;
Enhancement; Manila
Netarts
Bay.
Netarts Bay.
We continued
continued to
to monitor
the growth
growth characteristics
characteristics of
of
We
monitor the
littleneck clams
C1M1S planted
planted in
in Netarts
Netarts Bay.
Bay.
Manila
Manila littleneck
A new
new study
study was
was started
started in
in June
June 1982,
1982, in
in Netarts
Netarts Bay,
Bay, where
where 18,000
18,000 Manila
Manila
A
littleneck clams,
C1M1S, averaging
averaging 6.9
6.9 mm
mm long,
long, were
were planted
planted in
in aa fenced
fenced test
test plot
plot at
at
littleneck
aa density
of 180/ft2.
180/ft 2 • These
clams were
were progeny
progeny of
of adults
adults collected
collected from
from the
the
These clams
density of
Netarts test
test area
area in
in 1981
and spawned
spawned and
and reared
reared in
in the
the OSU
OSU laboratory
laboratory by
by
Netarts
1981 and
Wilbur
Wilbur Breese.
Breese.
By
the planted
planted clams
averaged 22.5
22.5 mm
in size,
size, an
an
By June
June 1983
1983 the
clams averaged
mm in
increase
increase of
of 15.6
15.6 mm,
mm, and
and averaged
averaged 3.8
3.8 C1M1S/ft2,
clams/ft2, giving
giving a
a survival
survival rate
rate of
of
2.1%.
2.1%.
SM1pling
again in
in June
June 1984
revealed the
the clams
clams averaged
averaged 36.1
36.1 mm
mm in
in
Sampling again
1984 revealed
size,
increase of
mm since
since June
June 1983.
1983.
size, an
an increase
of 13.6
13.6 mm
Tillamook
Bay.
Tillamook Bay.
Tillamook Bay.
Bay.
Tillamook
We
studies on
on clam
clam introductions
introductions into
into
We continued
continued our
our studies
During the
the year
year approximately
approximately 25,850
25,850 adult
adult Manila
Manila littleneck
littleneck
During
clams
imported from
from Washington
Washington and
and released
released in
in test
test plots
plots (Figure
(Figure 5).
5).
clams were
were imported
In
In
addition, 4,000
produced under
under laboralabora­
addition,
4,000 1983
1983 year-class
year-class juvenile
juvenile Manila
Manila C1M1S,
clams, produced
tory
at Oregon
State University,
University, were
were placed
placed in
in the
the bay.
bay.
tory conditions
conditions at
Oregon State
Brood
Brood
stock for
for these
these clams
C1M1S came
came from
from Hood
Hood Canal,
Canal, Washington.
Washington.
stock
A sample
sample of
of 1982
1982 year-class
Manila clams
clams released
released in
in March
March 1983
1983 showed
showed
A
year-class Manila
the
averaged 17.5
17.5 mm
mm long
long in
in July
July 1984.
1984.
the C1M1S
clams averaged
Survival
was poor
poor at
at 0.3%
0.3% of
of
Survival was
the original
original release.
release.
the
Yaguina Bay.
Bay.
Yaguina
On
December 5,
5, 1984,
1984, we
we planted
planted 8,700
8,700 adult
adult Manila
Manila littlelittle­
On December
neck clams
clams on
on the
the north
north side
sioe of
of Yaquina
Yaqu;na Bay
Bay breakwater.
breakwater.
neck
These clams
clams were
were
These
part of
of aa shipment
shipment of
700 pounds
pounds we
we received
from the
the Washington
Department of
of
part
of 700
received from
Washington Department
Fisheries
Point Whitney
Whitney Shellfish
Shellfish Laboratory.
Laboratory.
Fisheries Point
size and
and were
were planted
planted at
at aa density
density of
of 1O/ft2.
10/ft2.
size
-10-10­
The
clams averaged
averaged 31.0
31.0 mm
mm in
in
The clams
Coos
Bay.
Coos Bay.
On December
December 19,
we planted
planted 12,600
12,600 adult
adult Manila
Manila littlelittle­
On
19, 1984,
1984, we
neck clams
clams in
in South
South Slough
Slough of
of Coos
Coos Bay.
Bay.
neck
These
clams were
were part
part of
of the
the same
same
These clams
shipment
on the
the breakwater
breakwater of
of Yaquina
Yaquina Bay.
Bay.
shipment planted
planted on
Natural
Studies
Natural Recruitment
Recruitment Studies
Yaguina Bay.
Bay.
Yaquina
We
collected 20
20 subtidal
subtidal dredge
dredge samples
samples from
from the
the 18.4
18.4 acre
acre
We collected
Area 22 in
in Yaquina
Yaquina Bay
Bay in
in September
September 1984
1984 to
to determine
determine year-class
year-class strength,
strength,
Area
recruitment
success, and
and population
population and
and biomass
biomass estimates
estimates (Figure
(Figure 6).
6).
recruitment success,
Each
Each
sample
ft2 of
of surface
surface area;
area; depth
depth of
of samples
samples averaged
averaged 12-14
12-14 inches.
inches.
sample covered
covered 1
1 ft2
The
20 samples
samples produced
produced 140
140 gaper
gaper clams
clams (7.OIft2)
(7.0/ft 2 ) that
that averaged
averaged 96.5
The 20
96.5 mm
mm
in length.
length.
in
Some
gaper clams
clams was
recorded for
Some evidence
evidence of
of recruitment
recruitment of
of gaper
was recorded
for the
the
1984 year-class
year-class (Figure
1984
(Figure 7).
7).
gaper
in the
the test
test area.
area.
gaper clams
clams in
The 1972-75
1972-75 year-classes
year-classes providea
providea 73.6%
73.6% of
of the
the
The
We estimated
estimated that
that 5.6
5.6 million
million gapers
gapers weighing
weighing
We
3.5
pounds inhabited
inhabited the
the area
area (Table
(Table 30).
30).
3.5 million
million pounds
Tillamook
Tillarnook Bay.
Bay
In
In July
July 1984
1984 we
we collected
collected 56
56 subtidal
subtidal dredge
dredge samples
samples in
in aa
98.9
acre area
area of
of Hobsonville
Hobsonville Channel
Channel (Figure
(Figure 6).
6).
98.9 acre
Each
sample covered
covered 11 ft2
ft2
Each sample
of surface
surface area;
area; depth
depth of
of samples
samples averaged
averaged 12-14
12-14 inches.
inches.
of
Seven
species of
of clams
clams were
were represented
represented in
in the
the 404
404 clams
clams sampled.
sampled.
Seven species
Popu­
Popu-
lation
that 31,093,700
clams inhabited
inhabited the
the 98.9
98.9 acre
acre site
site
lation estimates
estimates revealed
revealed that
31,093,700 clams
(Table
30).
(Table 30).
Littleneck, cockle,
cockle, and
and butter
butter clams
clams comprised
comprised 27.7
Littleneck,
27.7 million
million of
of
the total.
total.
the
Biomass estimates
estimates for
for the
the commercially
commercially important
important species
species (butter,
(butter,
Biomass
cockle,
cockle, gaper,
gaper, and
and littleneck)
littleneck) revealed
revealed 4.9
4.9 million
million pounds
pounds of
of clams
clams in
in the
the
area.
area.
Age composition
composition data
data for
for butter,
butter, cockle,
cockle, gaper,
gaper, and
and littleneck
littleneck clams
clams is
is
Age
shown in
shown
in Figures
Figures 8-11.
8-11.
The data
data revealed
revealed that,
that, for
for each
each species,
species, we
we are
are seesee­
The
ing consistent
annual recruitment
recruitment for
for Tillamook
Tillamook Bay.
Bay.
ing
consistent annual
-11-11­
Nehalem Bay.
Nehalem
Bay.
In August
collected 36
36 subtidal
subtidal dredge
dredge samples
samples to
to deterdeter­
In
August we
we collected
mine distribution,
distribution, abundance,
abundance, and
and biomass
biomass of
of native
native littleneck
littleneck clams
clams in
in aa 16.5
16.5
mine
acre area
area (Figure
(Figure 6).
6).
acre
cial
clam fishery.
fishery.
cial clam
The
survey area
area included
included the
the site
site of
of an
an ongoing
ongoing commercommer­
The survey
2 of
of surface
surface area;
area; depth
depth of
of
Each
sample covered
covered 11 ft
Each sample
ft2
samples averaged
averaged 12
12 inches.
inches.
samples
We collected
collected 213
213 littleneck
littleneck clams
clams (5.91ft2)
(5.9/ft 2) that
that averaged
averaged 36.5
36.5 mm
mm in
in
We
length.
length.
Population
littleneck clams
clams weigh­
Population estimates
estimates revealed
revealed that
that 4,262,400
4,262,400 littleneck
weigh-
ing
pounds inhabited
inhabited the
the site.
site.
ing 214,600
214,600 pounds
(Table
30).
(Table 30).
Age
Age composition
composition data
data show
show
consistent
in the
consistent recruitment
recruitment in
the area
area with
with 2
2 to
to 5-year-old
5-year-old clams
clams well
well represented
represented
sample (Figure
(Figure 12).
12).
in the
in
the sample
Sign Replacement
Sign
Replacement
In 1984
project of
In
1984 the
the shellfish
shellfish staff
staff continued
continued a
a coastwide
coastwide project
of repairing
repairing or
or
replacing regulation
regulation signs.
signs.
replacing
ACKNOWLEDGMENT
ACKNOWLEDGMENT
II wish
wish to
to thank
thank Darrell
Darrell Demory.
Demory, Jean
Jean McCrae,
McCrae, and
and Rick
Rick Starr
Starr for
for their
their
assistance in
in gathering
gathering the
the data
data that
that was
was used
used in
in this
this report.
report.
assistance
-12-12­
APPENDIX
APPENDIX -13­
-13-
Table 1.
l.
Table
Peak Counts
of Clam
Clam Diggers1!
Diggers l /.
Peak
Counts of
Estuary
Estuar.l
Tideflat
Tideflat
Tillamook
Ti
11 amook
Garibaldi
Flat
Garibaldi Flat
Bay
Ocean
Bay Ocean
1975
1982
1975 1976
1976 1977
1979 1980
1980 1981
1981
1982
1977 1978
1978 1979
425
425
1983
1983
1984
1984 225
225
39
39
256
256
107
107
300
300
460
460
33
33
516
516
13
13
487
487
-
10
10
350
350
4
4
73
73
-
150
150
160
160
425
425
500
500
478
478
200
200
-
-
-
44
44
66
12
12
66
30
30
62
62
45
45
91
91
225
225
27
27
38
38
41
41
45
45
625
625
63
63
176
176
16
16
41
41
275
275
26
26
46
46
84
84
28
28
35
35
12
12
20
20
10
10
55
-
350
350
280
280
131
131
122
122
Netarts
Netarts
Happy Camp
Camp
Happy
-
175
175
Nestucca
Nestucca
Little
L
itt1e Nestucca
Nestucca
-
-
-
Yaquina
Vaquina
Bridge Bed
Bed
Bridge
Breakwater
Bed
Breakwater Bed
Idaho
Point
Idaho Point
NW
Gas Plant
NW Gas
Plant
Coqui
lle Point
Po; nt
Coquille
-
245
245
127
127
110
110
138
138
120
120
98
98
*
-
-
-
23
23
66
66
24
24
-
-
-
-
17
17
84
84
20
20
61
61
26
26
18
18
-
-
-
-
-
-
-
-
-
-
-
-
-
-
44
49
49
3
3
31
31
00
14
14
-
55
55
-
-
109
109
146
146
33
33
22
22
43
43
Alsea
Al sea
Siuslaw
Siuslaw
!J
1!
North
North Beach
Beach
Bay
Shore
Bay Shore
North
Fork
North Fork
*
57
57
Number of
clam diggers
diggers actually
actually on
on tideflat
tideflat at
at time
time of
of count.
count.
Number
of clam
at
or
near
low
tide.
at or near low tide.
-14­
-14-
Count occurred
occurred
Count
Tab1
Table 2.
2.
ANNUAL
SUMMARY OF
ANNUAL SU*1ARY
OF
INTERVIEW DATA
~~SREATIONAL
CREATIONAL INTERVIEW DATA
Bay:
11 aroook
Bay: Ti
Tillamook
No. Diggers
Diggers Sampled
Sampled
No.
No.
Clams Sampled
Sampled
b. Clams
No. Oi9~er
Digger Hours
Hours
No.
/-burs/trip
Hours/trip
Clams/trip
Clams/trip
Clams/hour
Clams/hour
Digger origin
origin (%)
(X) Digger
........ 0'1
1962
1962
1963
1963
1965
1965
1971
1971
1975
1975
149
149
3,296
3,296
758
758
19,053
19,053
319
319
8,414
8,414
104
104
2,472
2,472
-
-
-
-
-
-
13,048
13,048
389,946
389,946
20,439
20,439
1.6
1.6
29.9
29.9
19.1
19.1
22.1
22.1
-
25.1
25.1
-
22.9
22.9
-
Local
Local
38
38
21
21
State
62
73
State
*
62
73
Non-State
Non-State
Compo (%)
(X) Species Camp.
Species
Butter
31.9
27.0
16.3
Butter
31.9
27.0
16.3
Cockle
45.0
45.0
38.2
16.8
Cockle
38.2
16.8
Gaper
6.3
Gaper
6.3
7.0
7.0
5.4
5.4
23.6
Littleneck
Littleneck
23.6
21.0
60.8
21.0
60.8
Softshe11 Softshell
Clams/trip
Clams/trip
6.8
Butter
6.8
Butter
5.0
7.1
5.0
7.1
Cockle
8.4
Cockle
8.4
11.3
4.9
11.3
4.9
Gaper
Gaper
1.8
1.6
1.4
1.8
1.6
1.4
Littleneck
Littleneck
5.2
5.3
18.4
5.2
5.3
18.4
Softshell
SoftshelI
Clams/hour
Clams/hour
Butter
Butter
3.2
3.2
Cockle
Cockle
3.1
3.1
Gaper
Gaper
1.1
1.1
Littleneck
Littleneck
11.7
11.7
Softshell
Softshell
Size Camp.
Compo (x
(x size)
size)
Size
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
No. Clams
Measured No.
Clams Measured
Butter
Butter
Cockle
Cockle
Gaper
Gaper
*
'
Litth:neck
Littleneck
Softshell
Softshell change in
in bag
bag limit;
limit; effective
effectiveJan:~,-1977
1// Regulation
Regulation chänyé
Jan. 1, 1977
-
23.8
23.8
*
-
-
20,7
20.7
43.4
43.4
5.3
5.3
29.7
29.7
1976
1976
1/ 1/
1977
1977
1979
1979
1980
1980
1981
1981
1982
1982
239
239
4,631
4,631
261.1
261.1
1.4
1.4
23.3
23.3
17
.0
17.0
252
252
4,647
4,647
335.8
335.8
1.3
1.3
18.4
18.4
13.8
13.8
1.1
1.1
19.4
19.4
17.7
17.7
597
597
11,104
11,104
715.2
715.2
1.2
1.2
18.6
18.6
15.5
15.5
456
456
8,728
8,728
548.9
548.9
1.2
1.2
19.1
19.1
15.9
15.9
359
359
6,558
6,558
443.3
443.3
1.2
1.2
18.3
18.3
14.0
14.0
219
219
4,249
4,249
219.5
219.5
1.3
1.3
19.4
19.4
14.6
14.6
32.9
32.9
57.0
57.0
27.8
27.8
57.3
57.3
33.1
33.1
55.2
55.2
30.2
30.2
64.7
64.7
22.4
22.4
72.6
72.6
27.6
27.6
63.5
63.5
38.8
38.8
57.1
57.1
4.1
4.1
207
207
4,825
4,825
283.2
283.2
-
18.2
18.2
28.5
28.5
18.5
18.5
34.7
34.7
-
10.5
10.5
46.7
46.7
17.2
17.2
24.9
24.9
-
4.2
4.2
6.6
6.6
4.3
4.3
8.1
8.1
1.9
1.9
8.6
8.6
3.2
3.2
4.6
4.6
-
-
-
3.1
3.1
4.9
4.9
3.2
3.2
5.9
5.9
6.5
6.5
2.4
2.4
3.5
3.5
-
-
-
4.9
4.9
10.3
10.3
1.3
1.3
7.0
7.0
-
-
77.3
77
.3
63.9
63.9
67.5
67.5
36.7
36.7
1978
1978
-
-
Tideflat: Garibaldi
Garibaldi Flat
Flat
Tideflat:
81.6
81.6
64.3
64,3
56.8
56.8
36,8
36.8
-
-
219
219
290
290
74
74
297
297
536
536
978
978
349
349
518
518
-
-
1.5
1.5
83.8
83.8
55.9
55.9
69.3
69.3
39.4
39.4
-
394
394
1,517
1,51]
538
538
tl62
862
-
-
11.5
11.5
66.6
66.6
7.1
7.1
14.7
14.7
-
-
13.5
13.5
64.0
64.0
9.6
9.6
12.7
12.7
-
2.2
2.2
12.9
12.9
1.4
1.4
2.8
2.8
-
2.0
2.0
11.8
11.8
1.3
1.3
2.6
2.6
-
83.0
83.0
55.2
55.2
82.0
82.0
38.2
38.2
-
145
145
637
637
84
84
233
233
-
-
28.7
28.7
46.5
46.5
42.8
42.8
24.2
24.2
7.1
7.1
17.7
17.7
5.7
5.7
27.2
27.2
1983
1983 45.8
45.8
27.4
27.4
6.0
6.0
20.8
2U.8
132
132 2,471 2,471
158.0
158.0 1.2
1.2 18.7
18.7 15.6
15.6 37.7 37.7
46.9 46.9
15.4 15.4
39.7 39.7
?i'.4
?i.4 4.5
4.5 28.4
28.4 -
-
-
-
5.5
5.5
8.9
8.9
1.4
1.4
3.4
3.4
7.8
7.8
4.4
4.4
1.4
1.4
5.0
5.0
8.9
8.9
5.3
5.3
1.2
1.2
4.0
4.0
7.4
7.4
5.1
5.1
0.9
0.9
5.3
5.3
-
-
-
-
2.1
2.1
9.9
9.9
1.5
1.5
2.0
2.0
4.6
4.6
7.4
7.4
1.1
1.1
2.8
2.8
6.3
6.3
3.6
3.6
0.9
0.9
4.0
4.0
6.7
6.7
4.0
4.0
0.9
0.9
3.0
3.U
6.2
6.2
4.3
4.3
0.7
0.7
4.4
4.4
-
-
-
-
-
70.3
70.3
60.1
60.1
114.1
114.1
38.0
38.0
68.8
68.8
54.0
54.0
107.9
107.9
37.0
37.0
2.5
2.5
11.9
11.9
1.8
1,8
2.4
2.4
-
72.3
72.3
60.9
60.9
84.2
84.2
38.5
38.5
-
555
555
1,501
1,501
327
327
171
171
-
64.8
64.8
55.0
55.0
90,2
90.2
36.5
36.5
70.6
70.6
56.9
56.9
91.3
91.3
39.5
39.5
-
-
-
-
304
304
535
535
111
111
187
187
413
413
254
254
81
81
251
251
379
379
389
389
392
392
481 481
407
407 21
21 461 461
-
-
-
-
77
Table
Table 2.
2.
Bay: Tillamook
Ti llamook
Bay:
ANNUAL
SUMMARY OF
OF RECREATIONAL
RECREATIONAL INTERVIEW
INTERVIEW DATA
DATA (Continued)
(Continued)
ANNUAL SU41ARV
Tideflat:
Garibaldi Flat
Flat
Tideflat: Garibaldi
1984
1984
~
200
No.
200
No. Diggers
Diggers Sampled
Sampled
3,729
No.
Sampled
3,729
No. Clams
Clams Sampled
242.5
No.
er Hours
242.5
No. Di
Digger
Hours
Hours
trip
------rl.~2~---------------------------------------------------------------------1.2
Hours/trip
18.7
Clams/trip
18.7
Clams/trip
15.4
Clams/hour
15.4
Clams/hour
Digger
origin~%)
Digger origin
(%)
30.0
Local
30.0
Local
67.5
67.5
State
State
2.5
2.5
Non-State
Non-State
Species Camp.
Species
COOlp. (%)
38.8
38.8
Butter
Butter
28.5
28.5
Cockle
Cockle
0.7
Gaper
0.7
Gaper
32.1
Littleneck
32.1
Littleneck
Softshell
Softshell
Clams/trip
cl arlls/trip
7.2
7.2
Butter
Butter
5.3
Cockle
5.3
Cockle
0.1
Gaper
0.1
Gaper
Littleneck
6.0
6.0
Littleneck
Softshell
Softshell
Clams/hour
Clams/hour
6.0
6.0
Butter
Butter
4.4
4.4
Cockle
Cockle
0.1
0.1
Gaper
Gaper
4.9
4.9
Littleneck
Littleneck
Softshell
Soft
shel 1
Size
size)
Size Compo
Camp. Cxx size)
78.4
Butter
78.4
Butter
52.8
52.8
Cockle
Cockle
108.0
108.0
Gaper
Gaper
38.3
38.3
Littleneck
Littleneck
Softshell
Softshell
No. Clams
Clams Measured
Measured
No.
Butter
203
Butter
203
Cockle
240
240
Cockle
Gaper
22
Gaper
236
Littleneck
236
Littleneck
'~~tshell
-''tshe11
tTi.,jlation
1, 1977
1977
1/ R'-v . dation change
change inin bag
bag limit;
lil1.lif; effective
effective Jan.
Jan. 1,
Table 3.
3.
Table
ANNUAL
SUMMARY OF
ANNUAL S(flIARY
OF RECREATION'
RECREATIO1' INTERVIEW
INTERVIEW DATA
DATA
Bay: Tillarnook
Ti 11 amook
Bay:
-
Tideflat:
Bay Ocean
Ocean
Tideflat: Bay
-
1971
vii
1977
1978
vii
94
94
171
171
1.8
1.8
23.9
23.9
13.1
13.1
170
170
2,1664
2,1664
333
333
2.0
2.0
15.7
15.7
8.0
8.0
574
574
70.4
70.4
1.9
1.9
15.1
15,1
20.2
20.2
74.5
74.5
5.3
5.3
14.7
14.7
79.0
79.0
6.5
6.5
13.2
13.2
76.3
76.3
lU.5
10.5
<0.1
<0.1
85.0
85.0
8.8
8.8
1.3
1.3
0.1
0.1
85.8
85.8
12.3
12.3
0.1
0.1
0.6
0.6
78.5
78.5
17.5
17
.5
0.8
0.8
-
-
87.3
87.3
12.2
12.2
-
-
<0.1
<0.1
17.1
17.1
1.8
1.8
U.3
0.3
No. Diggers
Diggers Sampled
Sampled 10,379
10,379
No.
No.
Sampled 216,728
216,728
No. Clams
Clams Sampled
No.
16,156
16,156
No. Digger
Digger Hours
Hours
Hours/trip
1.6
1,6
Hours/trip
Clams/trip
20.8
20.8
Clams/trip
Cl ams/hour
13.4
Clams/hour
13.4
Digger origin
origin (%)
(%)
Digger
Local
Local
21.0
21.0
State
73.0
State
73.0
Non-State
16.0
Non-State
16.0
Species
Compo (%)
(%)
Species Conip.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
Clams/trip
Clams/trip
......
Butter
Butter
"-J Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
Clams/hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
Size
Compo (x
(x size)
size)
Size Comp.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
No. Clams
Cl ams Measured
Measured
No.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
littleneCK
Softshell
Softshell
1// Regulation
Regulation chanye
change
vw
1979
1976
vii.
2,242
2,242
38
38
8.2
8.2
ii:is
1980
vi:
1981
79
79
119
119
11
,063 215.6
215.6
11,063
146.1
146.1 215.6
215.6
1.8
1.8
1.8
1.8
13.5
13.5 12.3
12.3
7.3
6.8
7.3
6.8
34
34
314
314
57.5
51.5
1.7
1.7
9.2
9.2
5.5
5.5
vj_ vi
1982
1983
1984 13
13
11
17.0
17.0
1.3
1.3
<0.1
<0.1
<0.1
<0.1
11
11
63
63
16.0
16.0
1.5
1.5
5.7
5.7
3.9
3.9
11
11
161
1E1
12.0
12.0
1.1
1.1
14.6
14.6
13.4
13.4
0.0
0.0
72.7
72.7
27.3
27.3
18.2
18.2
81.8
81.8
21.8
21.8
73.1
73.1
5.0
5.0
20.6
20.6
70.6
70.6
8.8
8.8
15.4
15.4
84.6
84.6
-
-
-
74.2
74.2
1.3
1.3
1.3
1.3
-
95.2
95.2
100.0
100.0
-
-
-
-
0.4
0.4
89.6
89.6
7.1
7.1
0.5
0,5
-
91.4
91.4
8.0
8.0
0.1
0.1
-
-
-
-
-
<0.1
<0.1
2U.5
20.5
2.9
2.9
<0.1
<0.1
0.1
0.1
12.3
12.3
2.7
2.7
0.1
0.1
-
-
-
-
6.9
6.9
0.1
0.1
0.1
0.1
-
5.5
5.5
14'.6
14.6
-
-
-
-
12.3
12.3
1.1
1.1
<0.1
<0.1
<0.1
<0.1
11.0
11,0
0.9
0.9
<0.1
<0.1
-
13.2
13.2
1.8
1.8
-
-
-
-
-
-
-
-
-
-
<0.1
<0.1
-
<0.1
<0.1
11.0
11.0
1.1
1.1
0.2
0.2
<0.1
<0.1
11.3
11.3
1.6
1.6
<0.1
<0.1
<0.1
<0.1
6.3
6.3
1.4
1.4
U.1
0.1
-
-
-
4.1
4.1
0.1
0.1
0.1
0.1
-
3.8
3.8
13.4
13.4
-
-
-
-
6.7
6.7
0.6
0.6
<0.1
<0.1
<0.1
<0.1
6.1
6.1
0.5
0.5
<0.1
<0.1
-
7.1
7.1
1.0
1.0
-
-
-
-
-
-
-
-
-
-
<0.1
<0.1
-
-
*
-
-
-
-
-
68.4
68.4
71.2
71.2
109.3 106.2
106.2
109.3
42.0
42.0
60.6
60.6
105.5
105.5
37.0
37,0
-
67.6
67.6
-
-
-
-
69.8
69.8
95.0
95.0
38.0
38.0
-
-
-
-
-
66.0
66.0
110.6
110.6
66.1
66.1
107.9
107.9
64.0
64.0
104.7
104.7
-
-
-
-
-
-
-
-
-
-
-
-
10.1
10.1
89.9
89.9
-
-
-
-
-
-
-
277
277
44
44
-
213
213
4
4
4
4
-
1,U75
1,075
224
224
781
781
118
118
318
318
68
68
525
525
79
79
-
-
-
-
-
-
-
-
-
-
-
-
in bag
bag limit;
limit; effective
effective Jan.
Jan. 1,
1, 1977
1977
in
-
-
100.0
100.0
-
-
-
-
-
-
-
-
-
-
-
59
59
77
-
-
-
-
11
-
77
24
24
2
2
Table
4.
Table 4.
ANNUAL SUMMARY
SUMMARY OF
OF RECREATIONAL
RECREATIONAL INTERVIEW
INTERVIEW DATA
DATA
ANNUAL
Say:
Netarts
Bay: Netarts
1,
1/
1977
1977
Tideflat:
Happy Camp
Camp
Tideflat: Happy
1978
1978
1979
1979
1980
1980
1981
1981
1982
1982
1983
1983
1984
1984
146
146
1,747
1,747
149.2
149.2
1.0
1.0
12.0
12.0
11.7
11.7
222
222
2,823
2,823
204.4
204.4
0.9
0.9
12.7
12.7
13.8
13.8
106
106
1,293
1,293
67.7
67.7
0.6
0.6
12.2
12.2
19.1
19.1
71
71
991
991
66.8
66.8
0.9
0.9
12.9
12.9
14.8
14.8
168
168
2,020
2,020
150.5
150.5
0.9
0.9
12.0
12.0
13.4
13.4
280
280
2,994
2,994
290.0
290.0
1.0
1.0
10.7
10.7
10.3
10.3
84
84
1,009
1,009
84
84
1.0
1.0
12.0
12.0
12.0
12.0
29 1
Local
17.6
29.1
Local
17 6
*
11.0
14.9
11.0
14 9
State
74.8
66.0
75.9
State
74.8
66.0
75.9
71.2
71.2
Non-State
7.6
5
9.1
Non-State
7.6
5.0
9.1
17.8
17
Species
Compo (%)
(%)
Species Comp.
47.1
Butter
9.2
5.8
Butter
47.1
9.2
5.8
2.6
20.8
2.6
20.8
Cockle
Cockle
21.9
1.0
0.0
0.1
21.9
1.0
0.0
0.1
Gaper
Gaper
36.6
73.6
95.7
36.6
73.6
62.5
91.0
95.7
62.5
91.0
Littleneck
Littleneck
0.8
15.9
0.8
15.9
5.3
5.4
3.1
5.3
5.4
3.1
Softshe11
Softshell
Clams/trip
Clams/trip
.......
3.3
1.3
Butter
3.3
1.3
0.7
Butter 0.7
0.4
2.5
2.5
co
Cockle
<0.1
Cockle
<0.1
3.2
0.2
0.0
0.0
3.2
0.2
0.0
0.0
18.0
Gaper
Gaper
4.3
8.9
16.0
4.3
8.9
9.1
10.9
9.1
10.9
0.6
Littleneck
Littleneck
0.1
0.6
0.4
0.1
1.4
0.8
0.4
1.4
0.8
Softshe11
Softshell
C1
ams/hour
Clams/hour
Butter
Butter
1.8
0.3
1.8
1.0
0.7
0.3
1.0
0.7
Cockle
Cockle
<0.1
0.1
2.3
0.0
0.1
<0.1
2.3
0.0
10.7
Gaper
12.3
6.5
6.7
10.7
Gaper
12.3
6.5
6.7
Litt1 eneck
Littleneck
0.1
0.5
0.6
0.4
0.1
0.5
0.6
0.4
Soft she 11
Softshell
Size Cornp.
Compo (x
(x size)
size)
Size
Butter
102.8
103.0
Butter
102.8
103.0
103.2
100.2
103.2
100.2
Cockle
Cockle
Gaper
Gaper
112.1
86.1
93.2
ll2.1
96.3
86.1
87.5
93.2
96.3
Littleneck
Litt'eneck
67 6
65 3
65.3
67.6
70.0
70.11
70.0
70
Soft
she 11
Softshell
No.
Measured
No. Clams
Clams Measured
219
219
Butter
66
Butter
66
Cockle
190
Cockle
190
Gaper
Gaper
282
190
643
557
282
190
643
557
921
921
Litt1
eneck
Littleneck
43
99
28
54
43
99
28
54
Softshell
Softshell
17
1/ Regi
ReYl ~ion
limit; effective
effective Jan.
change in
bag limit;
1. 1977
1977
ion change
in bag
Jan. 1,
28 4
59.9
11.7
17.9
17 9
73.6
73.6
8.5
8.5
40.3
40 3
50.6
50.6
9.1
9.1
48
48.22
44.0
44.0
7.7
7.7
22.5
22.5
72.9
72.9
4
4.6
29 8
29.8
64.3
6.0
6.0
7.7
7.7
5.4
5.4
0.1
0.1
92.5
92.5
2.0
2.0
13.7
13.7
5.0
5.0
<0.1
<0.1
94.3
94.3
0.6
0.6
0.7
0.7
0.1
0.1
98.5
98.5
0.8
0.8
4.0
4.0
89.5
89.5
2.9
2.9
No. Diggers
Digyers Sampled
Sampled
No.
No.
Sampled
No, Clams
Clams Sampled
No.
No. Digger
Di~ger Hours
Hours
Hours/tri
p
Hours/trip
Clams/trip
Clams/trip
Clams/hour
Clams/hour
Digger origin
origin (%)
(%)
Digger
1971
1971
1975
1975
1976
1976
5,106
5,106
85,230
85.230
6,613
1.3
1.3
16.7
16.7
12.9
12.9
18
18
164
164
141
141
1,709
1,709
193
193
1.4
1.4
12.1
12.1
8.9
8.9
-
-
9.1
9.1
-
187
187
2,727
2,727
2~4
254
1.4
1.4
14.6
14.6
10.7
10.7
*
90.3
90.3
0.2
0.2
-
00
82.7
82.7
3.4
3.4
.
-
-
1.0
1.0
-
U.5
11.5
0.2
0.2
-
0.7
0.7
<0.1
<0.1
11.3
U.3
0.2
0.2
-
1.1
1.1
-
12.5
12.5
0.3
0.3
1.8
1.8
00
10.6
10.6
0.4
0.4
0.6
0.6
<0.1
<0.1
11.3
11.3
0.1
0.1
1.0
1.0
<0.1
<0.1
17.7
17.7
0.4
0.4
2.0
2.0
00
12.3
12.3
0.5
0.5
0.7
0.7
<0.1
<0.1
12.7
12.7
0.1
0.1
-
*
-
-
107.2
107.2
105.9
105.9
109.7
109.7
102.5
102.5
-
-
-
-
92.1
92.1
73.6
73 6
93.6
93.6
66.7
66 7
-
-
417
417
34
34
-
98.9
98.9
71.3
71.3
0.1
0.1
<0.1
<0.1
10.5
10.5
0.1
0.1
97.7
97.7
70.77
70
109
109
-
-
468
468
33
454
454
-
-
22
22
565
565
99
-
0.1
0.1
<0.1
<0.1
10.2
10.2
0.1
0.1
0.4
0.4
0.5
0.5
10.8
10.8
0.4
0.4
-
82.0
82.0 101.8
101.8
31.0
31.0
101.9
101.9 100.3
100.3
50.8
55 8
70
2
70.2
-
62
62
0.4
0.4 0.5
0.5
10.8
10.8
0.4
0.4
-
-
-
-
24
24
-
-
-
-
3.7
3.7
-
66
11
338
338
44
-
32
32
-
240
240
29
29
19
19
Table
5.
Table 5.
ANNUAL SUMMARY
INTERVIEW DATA
DATA
ANNUAL
SUMMARY OFOFRErn~ATIONAL
REATI0NAL INTERVIEW
Bay: Netarts
~
Tidef1at:
Cape Lookout
Lookout Sand
Sand Spit
Spit
Tideflat: Cape
1979
1979
1980
1980
1981
1981
1982
1982
72
43
76
509
72.
6,473
43
76
509
No.
Sampled 6,473
No. Diggers
Diggers Sampled
1,038
2,433
9,293 1,324
115,811
1,038
2,433
9,293
1,324
No.
Sampled 115,811
No. Clams
Clams Sampled
88,656
656
148.8
148
11,055
055 148.8
148
Hours
No.
Di er Hours
No. Digger
2.1
1.3
1.9
2.1
2.1
2.
Hours
trip
1.3
.9
Hours/trip
24.1
18.3
17,9
24.1
18.3
18,4
17.9
32.0
18.4
32.0
Clams/trip
Clams/trip
13.4
16.5
8.8
8.9
13.4
16.5
8.8
8.9
C1 ams/hour
Clams/hour
Digger
origin (%)
Digger origirif%)
23.1
17,6
23,7
23.1
22.2
17
.6
23.7
22.2
Local
Local
77.8
74.8
76.3
66.6
77
.8
74,8
76.3
66.6
State
State
106
7.6
10.6
7.6
Non-State
Non-State
Species
Compo (%)
(%)
Species Comp.
15.8
6.6
2.0
38.4
38.4
49.0
49.0
15.8
6.6
2.0
Butter
Butter
76.9
44.4
46.0
76.9
72.3
72.7
44.4
46.0
72.3
72.7
Cockle
Cockle
2.7
3.7
15.3
22,4
3.7
15.3
8.9
2.7
22.4
8.9
Gaper
Gaper
2.1
1.3
3.2
2.1
1.3
Littleneck
6.9
1.3
3.2
1.3
Littleneck
6.9
Softshe11
Softshell
C1amsltrip
Clams/trip
Butter
11.8
Butter
6.9
11.8
5.1
1.2
0.4
6.9
5.1
1.2
0.4
13,2
Cockle
Cockle
11,1
24.6
13.4
8.0
11.1
24.6
13.2
13.4
8.0
1.6
4.1
4.1
0.7
1.2
2.8
Gaper
1.6
0.7
1.2
2.8
Gaper
Littleneck
Littleneck
1.2
1.0
0.4
0.2
1.2
0.3
0.4
0.2
0.3
1.0
Soft she 11
Softshell
Clams/hour
Clams/hour
2.6
5.1
*
2.6
0.6
Butter
5.1
0.6
Butter
0.2
0.2
12.7
Cockle
5.9
12.7
6.4
6.5
5.9
6.4
6.5
Cockle
1.2
Gaper
0.6
2.0
Gaper
0.6
1.3
2.0
1.2
1.3
Littleneck
0.5
0.5
0.2
Littleneck
0.9
0.2
0.1
0.9
0.1
Softshe
11
Softshell
size Compo
omp. (x
Size
size)
x size)
71.8
74.1
76.9
Butter
84.5
71.8
74.1
76.9
Butter
84.5
80.3
80.3
72.7
Cockle
65.4
73.3
73.0
75.7
72.7
Cockle
65.4
73.3
73.0
75.7
Gaper
87.4
Gaper
108.1
80.4
87.4
108.1
80.4
103.4
100.5
103.4
100.5
Littleneck
57.8
Littleneck
57.8
57.9
57.9
Softshe11
Softshell
'No.
Measured
No. Clams
ciams Measured
Butter
237
294
80
11
Butter
237
294
80
11
32
32
Cockle
245
257
674
851
245
257
674
851
555
Cockle
555
257
257
Gaper
52
36
170
144
Gaper
52
36
170
144
Littleneck
31
12
Littleneck
31
12
Soft
she 11
Softshell
~// Regulation
change in
inbagllrllit;-effective
Jan. 1,
1,-1977
Regulation change
bag limit; effective Jan.
1977
85
85
1,560
1,560
178
178
2.1
2.1
18.4
18.4
8.8
8.8
63
63
1,074
1,074
88.5
88.5
1.4
1.4
17.0
17 .0
12.1
12.1
80
80
1,397
1,397
149.5
149.5
1.9
1.9
17.5
17.5
9.3
9.3
56
56
1,029
1,029
83.0
1.5
1.5
18.4
18.4
12.4
12,4
36.5
36.5
61.2
61.2
22.33
17.5
17.5
76.2
76.2
66.3
12.5
12.5
81.3
81.3
77.55
44.6
44.6
51.8
51.8
3 6
3,6
38.1
38.1
53.4
53.4
8.5
8.5
43.7
43.7
52.1
52.1
4.2
4,2
5.5
5.5
74.4
74.4
16,0
16.0
3.8
3.8
1.9
1.9
93,3
93.3
4.8
4.8
7.7
7.7
76.7
76.7
13.3
13.3
1.9
1.9
0.3
0.3
84.9
84.9
12.1
12.1
2.6
2.6
11.0
11.0
80.4
80.4
5.9
5.9
2,6
2.6
11.0
11.0
78.0
78.0
9.0
9.0
0.1
0.1
1.8
1.8
1975
1975
1976
1976
-
1.0
1.0
13.6
13.6
2.9
2.9
0.7
0.7
-
0.5
0.5
6.5
6.5
1.4
1.4
0.3
0.3
-
-
0,3
0.3
15.9
15.9
0.8
0.8
-
0.2
0.2
11.3
11.3
0.6
0.6
-
-
80.4
80.4
75.2
75.2
91.7
91.7
53.7
53.7
75,6
75.6
72.2
72
.2
110.7
110.7
-
20
20
525
525
44
44
-
118
71
118
71
2,174
2,174 1,362
1,362
196.5
86.5
196.5
86.5
1.7
1,2
1.7
1.2
19.2
18.4
19.2
18.4
11.1
15.8
11.1
15.8
-
1.4
1.4
13.4
13.4
2.3
2.3
0.3
0.3
-
0.7
0.7
7.2
7.2
1.2
1.2
0.2
0.2
-
0.1
0.1
15.6
15.6
2.2
2.2
0.5
0.5
-
<0.1
<0.1
10.5
10.5
1.5
1.5
0.3
0.3
2.0
2.0
14.8
14.8
1.1
1.1
0.5
0.5
-
2.1
2.1
15.0
15.0
1,7
1.7
<0.1
<0.1
0.4
0.4
1.2
1.2
8.9
8.9
0.7
0.7
0.3
0.3
1.7
1.7
123
123
1.4
1.4
<0.1
<0.1
0.3
0.3
72.2
72.2
70.0
70.0
75.1
75.1
52.5
52.5
-
-
74.2
74.2
72.0
72.0
104.7
104.7
53.3
53.3
67.7
67.7
71.3
71.3
119.0
119.0
49,5
49.5
68.8
68.8
69.5
69.5
117.7
117.7
42.2
42.2
-
-
33
534
534
71
71
26
26
27
27
238
238
15
15
53
53
133
133
240
240
-
-
-
86
86
812
812
191
191
60
60
1983
1983
1984
1984
1978
1978
1971
1971
1.0
1,
1/
1977
1977
49
49
486
486
48
48
13
13
-
-
18
22
19
19
Table 6.
Table
6.
Bay:
Nestucca
Bay: Nestucca
No. Diggers
Diggers Sampled
Sampled
No.
No. Clams
Clams Sampled
Sampled
No.
No. Digger
Digger Hours
Hours
No,
Hours/trip
Hours/trip
Clams/trip
Clams/trip
Clams/hour
Clams/hour
Di gger origin
orfgin-(%)
(%)
Digger
N
a
C'
ANNUAL
SUMMARY OF
RECREATIONAL INTERVIEW
INTERVIEW DATA
DATA
ANNUAL SUMMARY
OF RECREATIONAL
Tideflat:
Little Nestucca
Nestucca Flat
Flat
Tideflat: Little
1/
1971
1977
1,466
1,466
23,211
23,211
1,584
1.1
1.1
15.8
15.8
14.7
14.7
34
34
1,049
1,049
43
43
1.3
1.3
30,9
30.9
24.4
1979
1980
1981
1982
23
23
357
357
27
27
1.2
1.2
15,5
15.5
13,2
13.2
22
22
653
653
16
16
38
38
484
484
1,120
1,120
21
21
1.3
1.3
30.3
30.3
23.2
23.2
72
72
1.9
1.9
29.5
29.5
15,6
15.6
52,9
13.0
Local
12.4
52.9
18.8
13.0
Local
73.5
47.1
State
73.5
47.1
62.5
86.8
87.0
62.5
State
18.8
13.2
Non-State
14.1
18.8
13.2
14,1
Non-State
Spec
ies Comp.
Compo (Z)
(%)
Species
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
100.0
100.0
100.0
100.0
100.0
Softshell
100.0
100.0
100.0
100.0
100.0
Softshell
Clams/trip
Clams/trip
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt 1eneck
Littleneck
15.5
Softshell
15.8
30.9
30.3
29.5
15.5
15.8
30.9
30,3
29.5
Softshell
Clams/hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
14.7
24.4
15.6
13,2
Softshell
14.7
24.4
23.2
15.6
13.2
Softshell
23.2
Size
Compo
(x
size)
Size Comp. (x size)
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
86.0
84.2
79.9
78.3
86.0
84.2
79.9
78.3
Softshell
No. Clams
Clams Measured
No.
Measured
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt
leneck
Littleneck
0
250
332
254
163
Softshell
250
254
163
Softchell
332
0
1/ Regu
+l/'-=R-e-gu~:
ion change
change in
Jan. 1,
1, 1977
1977
in bag
bag limit;
limit; effective
effective Jan.
ion
1983
22
22
1984--19-19----rg- 19
31
31
1.4
1.4
29,7
29.7
21.4
21.4
623
623
33.5
33.5
1.5
1.5
28.3
28.3
18.6
18.6
62
62
1,386
1,386
94
94
1.5
1.5
22.4
22.4
14.7
14,7
4,5
4.5
86.4
86.4
9.1
9.1
18.2
18.2
77.3
77.3
4.6
21.0
21.0
59.7
59.7
19.4
19.4
-
-
-
-
-
-
-
100.0
100.0
100.0
100.0
100.0
100.0
-
-
-
-
-
-
29,7
29.7
28.3
28.3
22.4
22.4
-
-
-
-
*
21.4
21.4
18.6
18.6
14.7
14.7
-
-
-
-
-
-
80.5
80.5
76.6
76.6
-
*
300
300
240
240
-
75.6
75.6
-
547
547
Table 7.
7.
Table
ANNUAL
SUMMARY OF
OF RRr
ANNUAL SUMMARY
Bay:
Yaquina
Bay: Yaquina
1971
1971
No. Diggers
Diggers Sampled
Sampled
No.
No.
Sampled
No. Clams
Clams Sampled
No.
No. Digger
Di~ger Hours
Hours
Hours/trip
Hours/trip
Clams/trip
Clams/trip
Clams/hour
Clams/hour
Digger
origin (%)
(%)
Digger origin
N
I-'
4,518
4,518
41,769
41,769
6,769
6,769
1.5
1.5
9.2
9.2
6.2
6,2
Local
Local
State
State
Non-State
Non-State
-Species comp.
compo (%)
(%) other2!
otherZl
Species
Butter
0.2
0.2
Butter
Cockle
79.4
Cockle
79.4
Gaper
19.5
Gaper
19.5
Littleneck
0.8
Littleneck
0.8
Softshel1
Softshell
c1 amsltri pp
Clams/tn
<U.1
Butter
Butter
<0.1
7.3
Cockle
Cockle
7.3
Gaper
Gaper
1.8
1.8
<0.1
Littleneck
Littleneck
<0.1
Softshel1
Softshell
Cl amsl hour
Clams!
hour
Butter
<0.1
Butter
<0.1
Cockle
Cockle
4.9
4.9
Gaper
Gaper
1.2
1.2
Litt
1eneck
Littleneck
Softshell
Softshell
Size
Compo (x
(x size)
size)
Size Comp.
Butter
Butter
Cockle
Cockle
60.5
60.5
Gaper
Gaper
Littleneck
Littleneck
Softshe11
Softshell
No. Clams Measured
No.
Measured
Butter
Butter
Cockle
Cockle
Gaper
Gaper
1,
1/
2/
1)
1972
1972
1975
1975
1976
1976
-
88
88
694
694
-
-
29
29
414
414
36.0
36.0
1.2
1.2
14.3
14.3
11.7
11.7
-
-
-
-
7.9
7.9
-
-
-
-
-
-
-
-
-
-
-
-
0.8
0.8
42.1
42.1
54.8
54.8
2.3
2.3
-
<0.1
<0.1
3.3
3.3
4.3
4.3
0.2
0.2
-
'~ATIONAL
EATIONAL
1
1/
1977
1977
INTERVIEW DATA
DATA
INTERVIEW
Tideflat: Bridge
Bridge Bed
Bed
Tideflat:
1983
1983
1978
1918
1979
1979
1980
1980
1981
1981
1982
1982
1.4
1.4
7.9
7.9
5.8
5.8
89
89
892
892
109.9
109.9
1.2
1.2
10.0
10.0
8.1
8.1
143
143
1,313
1,313
120.0
0.8
0.8
9.2
9.2
10.9
10.9
142
142
1,222
1,222
159.5
159.5
1.1
1.1
8.6
8.6
7.1
7.7
342
342
3,773
3,773
353.9
353.9
1.0
1.0
11.0
1l.0
10.7
10.7
149
149
1,609
1,609
154.0
1.0
1.0
10.8
10.8
10.4
10.4
31.0
31.0
48.3
48.3
20.7
20.7
19.6
19.6
70.9
70.9
9.5
9.5
24.7
24.7
69.7
69.7
4.5
4.5
22.4
22.4
76.2
16.2
1.4
1.4
18.3
18.3
10.4
70.4
1l.3
11.3
44.7
44.7
49.1
49.1
6.1
6.1
48.3
48.3
48.3
48.3
3.4
3.4
32.2
32.2
67.8
67.8
0.2
0.2
72.2
72.2
24.6
24.6
1.4
1.4
0.. 8
0.8
45.4
45.4
43.6
43.6
0.6
0.6
24.6
24.6
72.1
/2.1
1.1
1.1
0.2
0.2
1.9
7.9
89.6
89.6
0.4
0.4
1.1
1.7
1.4
1.4
94.8
94.8
2.1
2.1
0.8
0.8
15.7
15.7
81.0
81.0
1.7
1.7
1.9
1.9
7.2
7.2
85.4
4.5
4.5
3.2
3.2
12.9
12.9
72.9
12.9
2.8
2.8
-
<0.1
<0.1
10.3
10.3
3.5
3.5
0.2
0.2
-
<0.1
<0.1
8.4
8.4
2.9
2.9
357
2,838
2,838
488
488
1.4
1.4
-
<0.1
<0.1
3.6
3.6
3.5
3.5
0.1
0.1
-
<0.1
<0.1
2.6
2.6
2.5
2.5
-
<0.1
<0.1
2.5
2.5
7.2
7.2
0.1
0.1
-
-
-
<0.1
<0.1
0.7
0.1
8.2
8.2
0.1
0.1
-
<0.1
<0.1
<0.1
<0.1
8.2
8.2
0.2
0.2
-
<0.1
<0.1
0.9
0.9
9.8
9.8
202
191
202
191
1383
1383
1,543
1,543
264.5
273.5
273.5 264.5
1.4
1.4
1.4
1.4
7.6
7.2
1.6
1.2
5.6
5.2
5.6
5.2
-
-
0.1
0.1
1.7
1.7
8.9
8.9
0.2
0.2
0.2
0.2
0.8
0.8
9.2
9.2
0.5
0.5
0.3
0.3
1.0
1.0
5.6
5.6
0.2
0.2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
5,8
55.8
100.0
100.0
62.2
12.5
72.5
57.4
574
107.7
107.7
54.7
54.7
80.4
80.4
65.1
65.1
105.9
105.9
54.7
54.7
-
-
-
0.1
0.1
2.0
2.0
5.9
5.9
-
-
46.7
46.7
115.5
115.5
-
49.3
49.3
107.1
107.1
60.3
60.3
-
-
-
-
-
-
-
-
-
-
-
-
-
25
25
276
276
316
316
205
205
62
62
592
592
593
593
202
202
154
154
-
31.1
31.1
-
-
57.5
51.5
95.0
95.0
Littleneck
Littlen~ck
12
12
Soft
she 11
Softshell
Reyulation
change in
in bag
bag limit;
limit; effective
effective Jan.
1, 1977.
Regulation change
1977.
Jan. 1,
Bentnose
7.0%, Inquinata
Inquinata 0.2%,
other 0.6%.
0.6%.
Bentnose 7.0%,
0.2%, other
-
69.9
699
101.
101.17
67.5
67.5
66.8
66.8
96.8
96.8
51.5
5L5
-
51
51
-
279
279
22
-
-
0.1
0.1
0.1
0.1
7.3
7.3
0.1
0.1
1.1
1.1
8.6
8.6
0.2
0.2
0.8
0.8
8.9
8.9
71.9
71.9
14
14
66
419
419
19
19
45.5
45.5
49.7
49.1
4.7
4.7
7.8
1.8
2.4
2.4
5.2
5.2
80.1
4.5
4.5
-
U.2
0.2
0.7
0.7
4.1
4.1
0.2
0.2
-
1984
1984 20
20
536
536
1,370
1,370
55
55
-
5
5
86
86
308
308
99
-
0.2
0.2
0.4
0.4
5.8
5.8
0.3
0.3
-
0.1
0.1
0.3
0.3
4.2
4.2
0.2
0.2
78.9
74.0
74.0
78.9
66.9
669 132
73.2
105.6
104.6
104.6
105.6
55.9
52.4
52.4
55.9
35
35
138
138
406
406
34
34
-
12
12
41
41
200
200
24
24
-
Table
8.
Table 8.
ANNUAL
SUMMARY OF
ANNUAL SUMMARY
OF
Bay:
Yaqu;na
Bay: Yaquina
1971
1971
N
N
1975
1975
1976
1976
1,
1/
1977
1977
~ECREATIONAL
RECREATIONAL
INTERVIEW DATA
INTERVIEW
DATA
Tideflat:
Breakwater Bed
Bed
Tideflat: Breakwater
1981-···
1982···---r983
1981
1982
1983
1978
1978
1979
1979
1980
1980
No.
Diggers Sampled
Sampled 1,455
48
1,455
48
46
20
No. Diggers
46
20
No. Clams
Clams Sampled
Sampled
22,175
515
511
270
No.
22,175
515
511
270
No.
69.1
21.5
No. Digger
Digger Hours
Hours
2,179
69.1
21.5
2,179
Hours/trip
1.5
1.4
1.1
1.5
1.4
1.1
Hours/trip
Cl
ams/tri p
10.6
15.2
10.6
C1ams/trip
15.2
13.5
11.2
13.5
11.2
Clams/hour
10.2
7.4
12.6
Clams/hour
10,2
7.4
12.6
Digger
origin (%)
{%}
Digger origin
Local
Local
35.4
55.0
35.4
55.0
State
State
64.6
64.6
45
45
Non-State
Non-State
Z/
Species
Compo (%)
{%} Other
Species Comp.
Other2!
Butter
1.2
Butter
T.2
0.7
1.5
1.4
0.7
1.5
1.4
Cockle
15.3
Cockle
15.3
3.9
3.9
18.2
13.7
18.2
13.7
95.0
Gaper
Gaper
95.0
84.4
83.0
78.9
84.4
83.0
78.9
Litt
leneck
Littleneck
0.2
0.4
0.2
0.8
0.4
0.4
0.8
0.4
Soft she 11
Softshell
Clams/trip
Clams/trip
<0.1
Butter
Butter
0.2
<0.1
0.2
0.1
0.1
0.1
0.1
Cockle
Cockle
2.3
0.4
2.3
0.4
1.8
1.9
1.8
1.9
Gaper
Gaper
10.6
12.7
10.6
12.7
<0.1
Littleneck
Littleneck
<0.1
<0.1
<0.1
0.1
0.1
0.1
0.1
Softshe11
Softshell
*
Cl ams/hour
Clams/hour
Butter
0.1
0.1
0.1
0.1
0.1
0.1
Butter
Cockle
Cockle
1.6
1.6
1.3
1.7
1.3
1.7
Gaper
8.4
5.8
Gaper
8.4
5.8
10.6
10.6
Li tt 1eneck
<0.1
Littleneck
0.1
0.1
<0.1
0.1
0.1
Soft
she 11
Softshell
Size
(x size)
size)
Size Compo
Comp, (x
<0.1
Butter
0.1
<0.1
Butter
<0.1
0.1
<0.1
Cockle
Cockle
75.6
76.1
75.6
*
72.5
76.1
12.5
Gaper
Gaper
113.8
116.2
123.3
113.8
116.2
123.3
118.9
118.9
Littleneck
Littleneck
Soft she 11
Softshell
No.
Clams Measured
Measured
No. Clams
Butter
Butter
Cockle
Cockle
79
*
79
Gaper
Gaper
310
198
207
310
198
207
Littlene,ck
Littleneck
Softhell
Soft c:he11
1! Regt.
in bay
1/
RegL ..ion
~;on change
bay limit;
1, 1977
1977·
limit; effective
etfective Jan.
change in
Jan. 1,
""t/! Bentnose
Bentnose clam
clam
.'
10
10
142
142
20.0
20.0
2.0
2.0
14.2
14.2
7.1
7.1
21
21
261
261
44
44
2.1
2.1
12.4
12.4
5.9
5.9
16
16
166
166
27
27
1.7
1.7
10.4
10.4
6.1
6.1
14
14
157
157
20.5
20.5
1.5
1.5
11.2
11.2
7.7
7.7
17
17
190
190
24.0
24.0
1.4
1.4
11.2
11.2
7.9
7.9
63
63
654
654
102.5
102.5
1.6
1.6
10.4
10.4
6.4
6.4
30.0
30.0
28.6
28.6
71.4
71.4
18.8
18.8
50.0
50.0
31.3
31.3
71.4
71.4
28.6
28.6
52.9
52.9
47.1
47.1
-
-
1.8
1.8
19.9
19.9
75.3
75.3
1.2
1.2
2.5
2.5
1.9
1.9
94.9
94.9
0.6
0.6
1.1
1.1
8.4
8.4
85.8
85.8
0.5
0.5
30.2
30.2
66.7
66.7
3,2
3.2
15.9
15.9
5.8
5.8
4.0
4.0
71.6
71.6
2.8
2.8
-
-
*
-
7.0
7.0
84.5
84.5
-
6.5
11.1
11.1
81.2
81.2
1.1
1.1
-
-
-
1.0
1.0
-
0.8
0.8
1.4
1.4
10.1
10.1
0.1
0.1
-
-
0.2
0.2
2.1
2.1
7.8
7.8
0.1
0.1
0.3
0.3
0.2
0.2
10.6
10.6
0.1
0.1
-
-
-
-
0.4
0.4
0.6
0.6
4.8
4.8
U.1
0.1
0.1
0.1
1.2
1.2
4.6
4.6
0.1
0.1
0.2
0.1
0.1
7.3
7.3
<0.1
<0.1
-
-
-
-
0.5
0.5
6.0
6.0
<0.1
<0.1
-
-
-
109.1
109.1
64.U
64.0
-
-
-
-
-
62.6
62.6
106.4
106.4
-
16
16
-
11
12
12
109
109
11
-
-
-
*
-
-
27
27
69
69
97.0
97.0
81.6
81.6
-
-
-
*
-
-
-
195
195
3
3
37
37
0.1
0.1
0.7
0.7
6.8
6.8
<0.1
<0,1
106.4
106.4 100.7
100.7
51.0
51.0
44
3
3
142
142
11
-
0.1
0.1
0.9
0.9
9.6
9.6
0.1
0.1
-
0.6
0.6
0.4
0.4
7.4
7.4
0.3
0.3
-
-
85.3
85.3
1984
1984
-
0.4
0.4
0.3
U.3
4.6
4.6
0.2
0.2
-
82.3
82.3
70.1
70.1
96.3
96.3
52.0
52.0
-
36
36
32
32
200
200
20
20
19
19
Table
Table 9.
9.·
ANNUAL SUMMARY.
OF RF''''EATIONAL
INTmVIEW DATA
DATA
ANNUAL
SUMMARY.OF
RF'EATI0NAL INTERVIEW
Bay:
Yaquina
Bay: Yaquina
1971
1971
1975
1975
1976
1976
1,
1/
1977
1977
No. Diggers
Diggers Sampled
Sampled 10,462
10,462
No,
138,784
No.
Sampled 138,784
No. Clams
Clams Sampled
Hours
15,621
15,621
No.
No. Digger
Di er Hours
1.5
Hours trip
1.5
Hours/trip
13.3
13.3
Clams/trip
8.9
8.9
Clams/hour
Clams/hour
origin (%)
(%)
Digger origin
Digger
123
123
2,600
2,600
42
42
812
812
76.5
76.5
1.8
1.8
19.3
19.3
10.6
10.6
309
309
3,773
3,773
464
464
1.5
1.5
12.2
12.2
8.1
8.1
-'ZI
w
-
21.1
21.1
-
35.7
12.3
35.7
12.3
84.1
84.1
State
33.3
State
33.3
31.0
3.6
31.0
3.6
Non-State
Other 2/
Compo (%)
(%) Other
Species Comp.
Species
<0.1
0.3
0.5
Butter
0~3
0.5
0.5
Butter
<0.1
0.5
Cockle
78.5
Cockle
78.5
77.7
93.2
72.5
77.7
93.2
72.5
18.4
13.1
Gaper
21.7
5.8
18.4
13.1
Gaper
21.7
5.8
Littleneck
0.4
<0.1
0.2
Littleneck
0.4
<0.1
0.1
0.2
0.1
Softshe
11
Softshell
Cl ams/tri p
Clams/trip
Butter
<0.1
<0.1
0.1
Butter
<0.1
<0.1
0.1
0.1
0.1
Cockle
Cockle
10.3
19.7
14.0
9.6
10.3
19,7
14.0
9.6
Gaper
3.6
1.6
2.9
1.2
3.6
1.6
Gaper
2.9
1.2
Litt leneck
<0.1
<0.1
Littleneck
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
Softshe11
Softshell
Cl ams/hour
Clams/hour
Butter
0.1
Butter
0.1
0.1
0.1
0.1
0.1
Cockle
Cockle
6.9
6.9
6.4
7.7
6.4
7.7
Gaper
Gaper
1.9
2.0
1.1
1.9
2.0
1.1
Littleneck
<0.1
<0.1
<0.1
Littleneck
<0.1
*
<0.1
<0.1
Softshell
Softshell
Size
Size Comp.
Camp. (x
{x size)
size}
Butter
Butter
Cockle
Cockle
58.6
61.0
58.6
58.3
60.2
61.0
58.3
60.2
Gaper
113.0
Gaper
113.0
96.6
96.6
91.3
93.5
91,3
93.5
lenecK
Litt
Littleneck
Softshell
Softshell
No.
Clams
Measured
No. Clams Measured
Butter
Butter
Cockle
Cockle
Gaper
369
522
1,804
Gaper
369
522
1,804
Litt
leneck
Littleneck
171
126
173
171
126
173
Softshel1
Softshell
1/ Regulation
1/
Regulation change
change fnba~rlimit;
effediveJan.n977
in bag limit; effective Jan. 1, 1977
Local
Local
N
-
"'t// Bentnose
Bentnose clam
clam
Tideflat:
Idaho Point
Point
Tideflat: Idaho
1978
1978
1979
1979
1980
1980
1981
1981
1982
1982
1983
1983
1984
1984
20
20
298
298
25.2
25.2
1.3
1.
14.9
14.9
11.8
11.8
193
193
2,783
2,783
247.8
247.8
1.3
1.3
14.4
14.4
11.2
11.2
182
182
3,118
3,118
301.6
301.6
1.7
1.7
17.1
17.1
10,3
10.3
147
147
2,339
2,339
222.3
222.3
1.5
1.5
15.9
15.9
10.5
10.5
80
80
1,219
1,219
144.5
144.5
1.8
1.8
15.2
15.2
8.4
8.4
138
138
2,171
2,171
219.0
219.0
1.6
1.6
15.7
15.7
9.9
9.9
52
52
890
890
83
83
1.6
1.6
17.1
17.1
10
.7
10.7
45.0
45.0
50.0
50.0
5.0
5.0
31.6
31.6
62.7
62.7
5.7
5.7
28.6
28.6
65.4
65.4
6.0
6.0
15.6
15.6
70.7
70.7
13.6
13.6
18.8
18.8
81.3
81.3
9.4
9.4
85.5
85.5
5,1
5.1
21.2
21.2
76.9
76.9
1.9
1.9
0.4
0.4
0.6
0.6
97.1
97.1
1.6
1.6
0.3
0.3
1.7
1.7
-
83.9
83.9
15.1
15.1
-
70.2
70.2
20.7
20.7
0.1
0.1
-
-
-
12.5
12.5
2.3
2.3
-
-
9.9
9.9
1.8
1.8
-
-
59.0
59.0
95.2
95.2
-
0.2
0.2
10,1
10.1
3.0
3.0
<0.1
<0.1
-
0.2
0.2
7.9
7.9
2.3
2.3
<0.1
<0.1
-
75.1
75.1
58.2
58.2
95.9
95,9
55.3
55.3
-
14.9
14.9
2.2
2.2
-
-
-
95.0
9.0
2.9
2.9
0.9
0.9
-
-
14.9
14.9
0.6
0.6
<0.1
<0.1
-
-
14.5
14.5
0.4
0,4
<0.1
<0.1
-
-
-
-
-
9.8
9.8
0.4
0.4
-
-
8.0
8.0
0.2
0.2
0.1
0.1
-
-
-
-
-
87.3
87.3
54.3
54.3
91.7
91.7
50.1
50.1
0.1
0.1
l3.5
13.5
0.4
0.4
0.1
0.1
-
1.3
1.3
9.0
9.0
57.8
94.5
94.5
0.4
0.4
8!>.5
Bb.5
2.8
2.8
0.7
0.7
-
54.4
54.4
83.3
83.3
42,7
42.7
-
52,6
52.6
89.1
89.1
42.6
42.6
45
45
1,471
1,471
24
24
1,62U
1,620
181
181
-
44
1,302
1,302
75
75
99
-
540
540
40
40
55
-
-
-
-
-
-
-
..:
-
<0.1
<0.1
8.5
8.5
0.3
0.3
0.1
0.1
-
-
,-
-
0.1
0.1
93.4
93.4
4.1
4.1
0.5
0.5
-
-
250
250
42
42
-
87.2
87.2
12.8
12.8
-
*
-
0,1
0.1
16.6
16.6
0.3
0.3
0.1
0.1
-
0.1
0.1
10.4
10.4
0.2
0.2
<0.1
<0.1
-
85.8
85.8
52.3
52.3
-
44.0
44.0
-
5
240
240
-
44
-
19
19
Table 10.
Table
10.
ANNUAL
SUMMARY OF
INTERVIEW DATA
DATA
ANNUAL SUMMARY
OF RECREATIONAL
RECREATIONAL INTERVIEW
Bay: Yaquina
Yaqui na
Bay:
N
.p. 1971
1971
1975
1975
1976
1976
1
II
1977
1977
5,857
No. Diggers
Diggers Sampled
Sampled 5,857
No.
119,702
No. Clams
Clams Sampled
Sampled 119,702
No.
88,725
725
Hours
No.
No. Digger
Di er Hours
1.5
Hours
trip
1.5
Hours/trip
Cl amsltri p
20.4
20.4
Clams/trip
13.7
13.7
Cl ams/hour
Clams/hour
92
92
13,541
13,541
93
93
583
583
139.0
139.0
1.5
1.5
17.0
17.0
11.4
11.4
315
3,852
402.0
1.3
12.2
9.6
-
14.7
14.7
-
9.7
9.7
Local
Local
86.0
86.0
State
State
4.3
4.3
Non-State
-Z
Species
Compo (%)
(%) Other
/
Species Comp.
Other/
1.9
0.1
0.6
1.9
0.1
0.6
Butter
Butter
71.3
85.1
71.3
85.1
60.6
60,6
Cock
le
Cockle
29.8
22.0
12.7
29.8
22.0
12.7
Gaper
Gaper
0.3
0,7
1.3
0.3
Littleneck
0.7
1.3
Littleneck
Soft
she 11
Softshell
Clams/trip
Clams/trip
<0.1
<0.1
0.1
0.3
Butter
0.1
0.3
Butter
12.1
17.4
8.9
12.1
17
.4
8.9
Cockle
Cockle
Gaper
2.6
4.4
3.7
2.6
4.4
3.7
Gaper
<0.1
<0.1
0.1
0,2
Litt
leneck
0.1
0.2
Littleneck
Softshe
11
Softshell
Clams/hour
Clams/hour
<0.1
<0.1
<0.1
<0.1
Butter
Butter
11.7
8,1
11.7
8.1
Cock
1e
Cockle
1.7
Gaper
1.7
Gaper
2.5
2.5
<0.1
<0,1
<0.1
<0.1
Littleneck
Littleneck
Softshe
11
Softshell
Size
Compo (x
(x size)
size)
Size Comp.
Butter
Butter
63.4
Cockle
66.3
63.4
56.5
Cockle
66.3
56.5
Gaper
95.3
91.5
95.3
91.3
91.5
91.3
Gaper
Litt
leneck
Littleneck
Softshell
Softshell
No. Clams
Clams Measured
Measured
No.
Butter
Butter
Cock le
219
648
Cockle
219
648
Gaper
451
451
217
Gaper
217
Litt1ene.ck
Littlenek
Softriell
Softri,ell
1/7i7
Regu~
change in
in bag
bag limit;
limit; effective
effective Jan.
Jan.
ionionchange
2/
21 Bentnose
clam
.'
Bentnose clam
22.5
22.5
72.1
72
.1
5.4
5.4
1.1
1.1
74.5
74.5
13,8
13.8
0,5
0.5
-
0.1
0.1
9.1
9.1
1.7
1.7
0.1
0.1
-
0.1
0.1
7.1
7.1
1.3
1.3
0.1
0.1
-
Tideflat:
Northwest Gas
Gas Plant
Plant
Tideflat: Northwest
1978
1978
1979
1979
49
684
66.8
1.4
14.0
10.2
137
137
1,073
1,073
164,8
164.8
1.2
1.2
7.8
7.8
6.5
6.5
59,2
59.2
38.8
38.8
2.0
2.0
33.6
33.6
49,6
49.6
16.8
16.8
0.1
0.1
82.6
82.6
16.8
16.8
0.4
0.4
<0.1
<0.1
11.5
n.5
2.3
2.3
0.1
0.1
<0.1
<0.1
6.4
6.4
0.9
0.9
<0.1
<0.1
-
<0.1
<0.1
5.3
5.3
0.8
0.8
<0.1
<0.1
-
-
60,0
60,0
101.1
101.1
1982
1982
1983
1983
1984
1984
63
63
38
38
151
151
54.4
54.4
1.4
1.4
29
29
128
128
32,5
32.5
23
219
25.0
1.1
1.1
4,0
4.0
2.8
2.8
4,4
4.4
3.9
3.9
9.5
9.5
8.8
8.8
99
136
136
13
13
1,4
.4
15,1
15.1
10.5
10.5
36.8
36.8
57,9
57.9
5.3
5.3
65.5
65.5
34.5
34.5
34.8
34.8
65.2
65.2
495
495
84.3
1.3
1.3
7.9
7.9
5.9
5.9
30.2
30.2
68.3
68.3
1.5
1.5
0.6
0.6
78.4
78.4
19.6
19.6
1.4
1.4
59.4
59.4
94.9
94.9
-
-
4.0
4.0
0.3
0.3
0.1
0.1
0.1
0.1
0.3
0.3
1.0
1.0
0.1
0.1
11.33
3.6
3.6
0.3
0.3
0.1
0.1
99.0
99.0
52,5
52.5
96.0
96.0
47.4
47.4
80,0
80.0
47.1
47.1
88.8
88.8
48.0
48.0
57.5
57.5
50.2
50.2
87,3
87.3
45.5
45.5
11
18
18
46
46
22
22
<0.1
<0.1
4.6
4.6
1.2
1.2
0.1
0.1
-
-
-
-
525
525
106
106
-
606
606
96
96
5
5
11
349
349
61
61
55
-
-
-
1, 1977
1977
1,
-
1.8
1.8
0.5
0.5
84.0
84.0
0,1
0.1
0.4
0.4
1.4
1.4
0.1
0.1
1.9
1.9
0.1
0.1
6.2
6.2
1.5
1.5
0.1
0.1
.
-
91.4
91.4
7.0
7.0
1.6
1.6
889
889
152
152
.
2.0
2.0
11,3
11.3
34.4
34.4
2.0
2.0
47.0
47,0
-
-
<0.1
<0.1
8.5
8.5
1.7
1.7
<0.1
<0.1
1981
1981
-
-
-
60.7
60.7
92.8
92.8
0.2
0.2
81.9
81.9
11.9
11.9
0.6
0.6
1980
1980
-
-
-
-
-
-
-
60
60
77
44.4
44.4
33.3
33.3
22.2
22.2
2.2
2.2
-
94.9
94.9
-
13.7
13.7
2.9
2.9
-
-
<0.1
<0.1
8.0
8.0
14.3
14.3
-
-
-
1.3
1.3
0.4
0.4
-
-
<0.1
<0.1
7.4
7.4
9.9
9.9
1.2
1.2
0.3
0.3
-
-
-
97.0
97.0
57.0
57,0
96.5
96.5
45.8
45.8
11
177
177
88
30
30
-
56.6
56.6
-
-
122
122
-
19
19
Table
TaL
l.e 11.
11.
ANNUAL SUI+IARY
SUMMARY OF
INTERVIEW DATA
DATA
ANNUAL
OF RECREATIONAL
RECREATIONAL INTERVIEW
Tideflat: Coquille
Coquille Point
Point
Tideflat:
Bay: Yaquina
Yaql.t Ina
Bay:
No. Diggers
Diggers Sampled
Sampled
No.
No. Clams
Clams Sampled
Sampled
No.
N
U'I
No.
Digger Flours
Hours
No. Digger
Hours/trip
Hours/trip
Clams/trip
Clams/trip
Cl ams/hour
Clams/hour
Digger origin
origin (%)
(%)
Digger
Local
Local
State
State
Non-State
Non-State
Species
Compo (%)
(%)
Species Comp.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt
1eneck
Littleneck
Softshell
Softshell
Clamsltrip
Clams/trip
Butter Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Soft
she 11
Softshell
Clams/hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
Size
Compo (xx size)
size)
size .omp.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt
1eneck
Littleneck
Softshe 11
Softshell
No. Clams
Measured
No.
Clams Measured
Butter
Butter
Cock
le
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe
11
Softshell
Vi:1
1981
VT:?
1982
1983
11
11
53
53
267
267
75.0
75.0
1.4
1.4
5.0
5.0
3.6
3.6
27
27
147
147
24
24
9
9
0.8
0.8
2.2
2.2
2.7
2.7
33.0
33.0
1.2
1.2
5.4
5.4
4,5
4.5
25.9
25.9
55.6
55.6
-
9.4
9.4
75.5
75.5
15.1
15.1
4.2
4.2
3.0
3.0
40.1
40.1
34.7
34.7
15.7
15.7
8.2
8.2
100
100
-
95.8
95.8
-
-
0.1
0.1
0.2
0.2
-
-
2.1
2.1
-
4.7
4.7
0.2
0.2
2.2
2.2
1.9
1.9
0.9
0.9
0.4
0.4
-
-
-
0.1
0.1
0.1
0.1
-
-
2.6
2.6
-
3.3
3.3
0.1
0.1
1.8
1.8
1.6
1.6
0.7
0.7
0.4
0.4
-
-
-
88.0
88.0
93.6
93.6
-
96.6
96.6
61.3
61.3
74.9
74.9
47.2
47,2
98.9
98.9
45.9
45.9
-
-
-
11
5
-
-
94.5
94.5
23
23
-
5
142
142
4
4
-
-
-
18.5
18.5
93.3
93.3
3.0
3.0
-
V
1984
22
22
51
51
15
15
12
12
-
-
-
-
-
-
-
-
-
-
19
V
19
19
V
19
V
19
V
19
V
V
19
19
Table 12.
12.
Table
ANNUAL
SUMMARY OF
RECREATIONAL INTERVIEW
INTERVIEW DATA
DATA
ANNUAL SUMMARY
OF RECREATIONAL
Tideflat: Critser's
Critser's Islanci
Island
Tideflat:
Bay: Yaquina
Yaquina
Bay:
N)
N
O'l
No.
Sampled
No. Diggers
Diggers Sampled
No.
Sampled
No. Clams
Clams Sampled
No.
Digger Hours
Hours
No. Digger
Hours/trip
Hours/trip
Clams/tri
p
Clams/trip
Clams/hour
Clams/hour
0;
gyerorigi
n\(%)
%J
Digger
origin
Local Local
State State
Non-State
Non-State
Species
Compo (%)
(%)
Species Comp.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Li
tt 1eneck
Littleneck
Softshe11
Softshell
ITamsltri
Clams/tripp
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
Clams/hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe11
Softshell
Size
{x size)
size}
Size Compo
Comp. (x
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe 11
Softshell
No. Clams
Clams Measured
Measured
No.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt
1e~eck
Littlerkeck
Sof'tshe11
Sotshell
----=:.
1983
1983
1934
1984
42
42
1,380
1,380
56
56
1,3
1.3
32.9
32.9
24.6
24.6
491
491
23.5
23.5
1.7
1.7
35.1
35.1
20.9
20.9
40.5
40.5
59.5
59.5
50.0
50.0
50.0
50.0
-
-
-
-
-
-
-
*
19
19
14
14
-
-
100.0
100.0
100.0
100.0
-
-
-
-
-
-
-
-
32.9
32.9
35.1
35.1
-
-
-
-
-
-
24.6
24.6
20.9
20.9
-
-
-
-
-
-
-
-
82.5
82.5
93.0
93.0 -
-
-
-
-
-
-
569
569
-
68 68
f9
19
rg19
19
19 - 19
. - 19
19
19
19
19
19
19
19
19
19
19
Tabl~
TabU
13.
13.
ANNUAL
SUMMARY
ANNUAL SUMMARY
0-
RECREATIONAL
INTERVIEW DATA
DATA
RECREATIONAL INTERVIEW
Bay: Alsea
Alsea
Bay:
~
No.
No, Diggers
Diggers Sampled
Sampled
No.
Sampled
No. Clams
Clams Sampled
No.
Hours
No. Digger
Digger Hours
Hours/trip
Hours/trip
Cl ams/tri p
Clams/trip
Cl ams/hour
Clams/hour
Digger
origin (%)
(lJ
Digger origin
Local
Local
State
State
Non-State
Spec
es Comp.
Compo (%)
(%)
Species
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
CTams/mp
Clams/trip
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
Crams/hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe11
Softshell
Size Comp.
(x size)
Size
Comp:-(x
size)
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe11
Softshell
No. Clams
Clams Measured
Measured
No.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt 1eneck
Littleneck
Softshell
Softshell
Tideflat: North
Tideflat:
North Shore
Shore
1982
1982
1983
1983
44
71
71
33
22
22
4.5
4.5
1.5
1.5
7.3
7.3
4.9
4.9
6.0
1.5
1.5
17.8
17.8
11.8
11.8
1984
1984
-
-
-
100.0
100.0
-
-
-
100.0
100.0
-
-
-
-
*
-
-
100.0
100.0
90.9
90.9
-
*
-
-
-
4.6
4.6
4.6
4.6
-
-
-
-
17.8
17.8
6.7
6.7
-
-
-
-
-
0.3
0.3
0.3
0.3
-
-
-
-
-
11.8
11.8
4.4
4.4
-
-
-
-
-
-
0.2
0.2
0.2
0.2
-
-
-
-
-
~0.1
80.1
71.U
71.0
-
-
-
-
39.0
39.0
58.0
58.0
-
-
-
-
-
39
39
20
20
-
-
-
-
-
*
-
-
-
-
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
Table 14.
Table
14.
ANNUAL
SUMMARY OF
INTERVIEW DATA
ANNUAL SUMMARY
OF RECREATIONAL
RECREATIONAL INTERVIEW
DATA
Tideflat:
Bayshore
Tideflat: Bayshore
Bay:
Bay: Alsea
Alsea
N
00 No.
Diggers Sampled
Sampled
No. Diggers
No.
Sampled
No. Clams
Clams Sampled
No. Digger Hours
No.
Hours
Hours/trip
Hours/trip
Clams/trip
Clams/trip
Clams/hour
Clams/hour
origin (%)
(%)
Digger origin
Digger
Local
Local
State
State
Non-State
Non-State
Species Comp.
Compo (%)
(%)
Species
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe
11
Softshell
Clams/trip
Clams/trip
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
Clams/hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt leneck
Littleneck
Soft
she 11
Softshell
Size
(x size)
size)
Size Compo
Comp. (x
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt 1eneck
Littleneck
Softshell
Softshell
No. Clams Measured
No.
Measured
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt
1enec;:k
Littleneck
Softe-hell
Softell
1982
ii
1983
1984
32
32
529
529
46
46
1.4
1.4
16.5
16,5
11.5
11.5
24
24
316
316
39.5
39.5
1.7
1.7
13,2
13.2
8.0
8.0
17
17
156
156
28.5
28.5
1.7
1.7
9,2
9.2
5.5
5.5
59.4
59.4
25.0
25.0
66.7
66.7
25.0
25.0
8.3
8.3
41.2
41.2
58.8
58.8
15.6
15.6
-
99.8
99.8
0.2
0.2
-
-
16.5
16.5
<0.1
<0.1
99.7
99.7
-
11.5
11.5
<0.1
<0.1
-
-
98.7
98.7
1.3
1.3
-
o0.33
-
13.1
13.1
-
9.1
9.1
0.1
0.1
-
-
-
<0.1
<0,1
8,0
8.0
-
<0.1
<0.1
-
5.4
5.4
0.1
0.1
-
-
72.9
76.4
76.4
-
-
76.3
76.3
116.0
116.0
-
-
-
159
159
295
295
154
154
2
2
-
19
19
19
19
1$
19
nrg-­
n19
19
19
Table
15.
Table 15.
ANNUAL
INTERVIEW DATA
DATA
ANNUAL SUMMARY
SUMMARY OF
OF prAREATIONAL
P"REATJONAL INTERVIEW
Bay:
Al sea
Bay: Alsea
No. Diggers
Diggers Sampled
Sampled
No.
No.
Sampled
No. Clams
Clams Sampled
No.
No. Digger
Digger Hours
Hours
Hours/tri
p
Hours/trip
Clams/trip
Clams/trip
Clams/hour
Clams/hour
orfgi ,,----0;1
Digger origin
Digger
(%)
N
\.0
'0
Local
Local State
State Non-State
Non-State Species
(%1
Species Compo
Comp. (%)
Butter
Butter
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
Clams/trip
Clams/trip
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt
leneck
Littleneck
Softshell
Softshell
CTams/hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
Size
Compo (x
(x size)
size)
Size Comp.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
No. Clams
Measured
No.
Clams Measured
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe11
Softshell
Tideflat: Softshell
Softshell
Tideflat:
1983
1983
1984
1984
44
91
91
55
138
138
77
1.4
1.4
27.6
27.6
19.7
19.7
6.0
6.0
1.5
1.5
22.8
22,8
15.2
15.2
50.0
50.0
50.0
50.0
60.0
60.0
-
-
40.0
40.0
-
-
-
-
-
-
-
-
100.0
100.0
100.0
-
-
-
-
-
*
-
-
22.8
22.8
27.6
27.6
-
-
-
-
-
-
-
15.2
15.2
-
19.7
19.7 -
-
-
-
*
-
-
-
96,8
96.8
94.6
94.6
-
-
-
-
-
-
-
-
86.0
86.0
19
19
135 135
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19 Table 16.
16.
Table
ANNUAL SUMMARY
SUMMARY OF
OF RECREATIONAL
RECREATIONAL INTERVIEW
INTE/{VIEW DATA
ANNUAL
DATA
Bay:
Bay: Siuslaw
Siuslaw
No.
Diggers Sampled
Sampled
No. Diggers
No. Clams
Clams Sampled
Sampled
No.
No. Digger
No.
Dig~er Hours
Hours
tri p
Hours/
Hours/trip
Cl
ams/tri p
Clams/trip
Clams/hour
origin (%)
(X)
Digger
Digger origin
Local
Local
State
State
Non-State
Non-State
Tideflat: North
Tideflat:
North Fork1!
Fork2/
LII
1971
1976
L7i
1977
1978
1979
121:10
1980
1981
1213
121W
1982
ii:
1983
1984
3,203
3.203
72,756
72.756
4,844
4,844
39
39
1,067
1.067
54
54
1.4
1.4
27.4
27.4
19.8
19.8
51
51
1,426
1,426
101
101
2.0
2.0
28.0
28.0
14.1
14.1
21
21
670
670
31.5
31.5
1.5
1.5
31.9
31.9
21.3
21.3
42
42
1,140
1,140
55.3
55.3
1.3
1.3
27.1
27.1
20.6
20.6
77
188
188
5.0
5.0
0.7
0.7
26.9
26.9
37.6
37.6
115
115
3,445
3,445
145.2
145.2
1.3
1.3
30.0
30.0
23.7
23.7
21
21
875
875
28
28
1.3
1.3
41.7
41.7
31.3
31.3
33
33
1,163
1,163
32.0
32.0
1.0
1.0
35.2
35.2
36.3
36.3
168
168
5,418
5,418
231.0
231.0
1.4
1.4
34.0
34.0
24.7
24,7
12.8
12.8
84.6
84.6
2.6
2.6
28.8
28.8
66.7
66.7
4.4
4.4
28.6
28.6
71.4
71.4
19.0
19.0
47.6
47.6
33.3
33.3
28.6
28.6
71.4
71.4
38.3
38.3
48.7
48.7
13.0
13.0
47.6
47.6
52.4
52.4
51.5
51.5
42.4
42.4
99.11
27.4
27.4
67.3
67.3
5.4
5.4
1.5
1.5
22.7
22.7
15.0
15.0
-
------~
w
0
-
-
-
Species Comp. (%)
Butter
Butter
Cock.le
Cockle
*
Gaper
Gaper
*
*
Littleneck
Littleneck
Softshe11
100.0
100.0
100.0
100.0
100.0
Softshell
100.0
100.0
100.0
100.0
100.0
100.0
100.0
100.0
100.0
100.0
100.0
100.0
100.0
Cl
amsl tri p Clams/trip
Butter
Butter Cockl
e
Cockle
Gaper
Gaper
Li
tt 1eneck
Littleneck
*
22
27.4
28.0
31.9
27 1
26.9
Soft
she 11
Softshell
22,77
27.4
28.0
31.9
27.1
26.9
35.2
41 7 30.0
30.0
41.7
Clams/hour
cl amsl hour
Butter
Butter
Cockle
Cockle
*
Gaper
Gaper
Littleneck
Littleneck
Softshell
21
3
20.6
37.6
23
31.3
19.8
14.1
Softshell
19.8
14.1
21.3
20.6
37.6
23.77
31.3 36.3
15.0
15.0
Size
Size Comp.
Compo (x
(x size)
size)
Butter
Butter
Cockle
Cockle
*
Gaper
Gaper
*
Littleneck
Littleneck
*
Softshell
107.4
Softshell 107.4
96.5
99.0
89.5
90.0
89.4
90.7
92.8
96.5
99.0
89.5
90.0
89.4
90.7
92.8
No. Clams
Clams Measured
Measured
No.
Butter
Butter
Cock.le
Cockle
Gaper
Gaper
Littleneck
ttleneck
Softshell
741
676
1,629
Softshell
741
676
408
335
110
757
867
408
335
110
1,629
757
867
Includes
digging
on
west
side,
east
side
and
in
North
Fork
of
Siuslaw
&
near
Florence.
Includes
digging
on
west
side,
east
side
and
in
NortiiFork
of
Siuslaw
&
near
Florence.
/
II
-------~
-------
-
100.0
100.0
-
34.0
34.0
*
-
.7
24.7
-
95.0
95.0
-
-
297
297
19
19
Table
Table
ANNUAL
SUMMARY OF
OF
ANNUAL SUMMARY
17.
17~
~r~REATIONAL INTERVIEW
INTERVIEW DATA
DATA
Rr'REATIONAL
Bay:
Umpqua
Bay: Uinpqua
W
I-'
No.
Sampled
No. Diggers
Diggers Sampled
No.
Clams
Sampled
No. Clams Sampled
No. Digger
Hours
No.
Digger Hours
Hours/trip
Hours/trip
Clams/trip
Clams/trip
Clams/hour
Clams/hour
Digger
origin (%)
(%)
Digger origin
Local
Local
State
State
Non-State
Non-State
Species
Compo (%)
f%1
Species Comp.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe11
Softshell
Cl
allls/ trl p
Clams/trip
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Soft she 11
Softshell
Cl
alllSTfiour
Clams/hour
Butter
Butter
Cockl
e
Cockle
Gaper
Gaper
Littleneck
Littleneck
Soft
shell
Softshell
(x size)
size)
Size
Size Compo
Comp. (x
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt
1eneck
Littleneck
Softshell
Softshell
No. Clams Measured
No.
Measured
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littl
Littleneck
eneck
Softshe11
Softshell
Tideflat:
Tideflat:
1983
1983
1984
1984
22
23
23
930
930
68.5
68.5
3.0
3.0
40.4
40.4
13.6
13.6
72
4.0
4.0
2.0
2.0
36.0
36.0
18.0
18.0
-
30.4
30.4
56.5
13.0
-
-
-
-
-
100.0
100.0
-
-
-
-
100.0
100.0
-
-
-
-
-
-
-
-
36.0
36.0
40.4
40.4
-
-
-
-
-
-
-
18.0
18.0
19
19
-
13.6
13.6 -
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
19
19
19
19
19
19
19
19
19
19
Bolin
Island
Bolin Island
19
19
19
19
19
19
19
19 Table
Table 18.
18.
ANNUAL SUMMARY
SUMMARY OF
OF RECREATIONAL
RECREATIONAL INTERVIEW
INTERVIEW DATA
ANNUAL
DATA
Bay: Coos
Coos
Bay:
w
N
No.
Sampled
No. Diggers
Diggers Sampled
No.
Clams
Sampled
No. Clams Sampled
No.
Hours
No. Digger
Digger Hours
Hours/
tri
p
Hours/trip
Cl
ams/tri p
Clams/trip
Clams/hour
Clams/hour
Digger
orlgln (%)
(%)
Digger origin
Local
Local
State
State
Non-State
Non-State
SpeciesComp.
m
Species Comp. (%)
Butter
Butter
Cockle
Cockle
Gaper
Gaper
littleneck
Littleneck
Softshe11
Softshell
Clams/trip
Cl
ams/tri p
Butter
Butter
Cockl
e
Cockle
Gaper
Gaper
Littl eneck
Littleneck
Softshell
Softshell
ClamS/hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
Size Comp.
C()rnp~ (x
(x size)1/
sfzep/
Size
Butter
­
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
l /
No.
No. Clams
Clams Measured
Measured1/
Butter
Butter
Cockl e
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
- -Softshell
1/ Not
~/
Not taken
laken
Tideflat:
Tideflat:
1983
1983
1984
1984
66
-
1012
1012
-
4.5
4.5
-
0.8
16.8
16.8
22.4
22.4
-
-
100.0
-
-
-
-
-
4.0
4.0
19.8
19.8
69.3
69.3
6.9
6.9
-
0.7
0.1
3.3
3.3
11.7
11.7
-
-
-
-
1.2
1.2
-
-
-
0.9
0.9
-
4.4
4.4
15.6
15.6
1.6
1.6
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
19
19
19
19
19
19
19
19
19
19
19
19
Hanson's Marina
Marina -- South
South Slough
Slough
Hansons
19
19
19
19
19
19
19
19 Table
19.. ANNUAL
ANNUAL SUMMARY
INTERVIEW DATA
DATA
Table 19.
SUMMARY OF
OF H~rREATIONAL
RREATIONAL INTERVIEW
Tideflat:
Triangle
Tideflat: Charleston
Charleston Triangle
Bay: Coos
-
No. Diggers
Diggers Sampled
Sampled
No.
No. Clams
Cl ams Sampled
Sampled
No.
No, Di~~er
Digger Hours
No.
Hours
Hours/trip
Hours/trip
Clams/trip
Clams/trip
Clams/hour
Clams/hour
(%)
1983
1983
1984
1984
40
40
771
771
44
44
1.1
1.1
19.3
19.3
17.5
17.5
32
32
588
588
26.7
26.7
0.8
0.8
18.4
18.4
22.0
22.0
22.5
22.5
72.5
12.5
5.0
5.0
40.6
40.6
56.3
56.3
19.6
19.6
55.1
55.1
3.9
3.9
23.2
23.2
10.9
10.9
69.2
69.2
15.0
15.0
4.9
4,9
-
-
3.8
3.8
10.6
10.6
0.8
0.8
4.5
4.5
2.0
2.0
12.7
12.7
2.8
2.8
0.9
0.9
-
-
3.4
3.4
9.7
9.7
0.7
0.7
4.1
4.1
2.4
2.4
15.2
15.2
3.3
3.3
1.1
1.1
-
-
73.3
73.3
51.2
51.2
88.6
88.6
55.2
55.2
80.2
66.3
66.3
95.2
95.2
57.6
57.6
-
-
Digger origin
Tifgger
origin (%)
Local
Local
w
w
State
State
Non-State
Non-State
Species
Compo (%)
(%)
Species Comp.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe11
Softshell
Clams/trip
Clams/trip
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe11
Softshell
CTams/hour
Cl ams/ hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Soft
she 11
Softshell
STze
Comp. (x
( x size)
si zel
Size Comp.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
No. Clams
Measured
No.
Clams Measured
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littl
eneck
Littleneck
Softshe11
Softshell
3.1
3.1
39
39
17
17
45
45
26
26
18
18
218
218
-
-
54
54
159
159
19
19
19
19
19
19
19
19
19
19
19
19
--19--19-19
19
19
19
19
19
Table
Table 20.
20.
ANNUAL SUMMARY
SUMMARY OF
OF RECREATIONAL
RECREATIONAL INTERVIEW
INTERVIEW DATA
DATA
ANNUAL
Bay:
Coos
Bay: Coos
Tideflat: Charleston
Charleston Flat
Flat
Tideflat:
1983
1983
w
~
No.
Sampled
No. Diggers
Diggers Sampled
No. Clams
Sampled
No.
Clams Sampled
No.
Hours
No. Digger
Digger Hours
Hours/trip
Hours/trip
Cl
ams/tri p
Clams/trip
Clams/hour
C'ams/hour
Di
gge-r-origin
(%)
Digger
origin (%)
local
Local
State
State
Non-State
Non-State
SpecfesComp.
Species Comp. T%}
(%)
Butter
Butter
Cockle
Cockle
Gaper
Gaper
littleneck
Littleneck
Softshe11
Softshell
Clams/trip
Clams/tn p
Butter
Butter
Cockle
Cockle
Gaper
Gaper
l itt leneck
Littleneck
Softshe11
Softshell
CTams!hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
littleneck
Littleneck
Softshell
Softshell
Size
Comp. (x
S-ize---Colllp:(x size)
size)
Butter
Butter
Cockle
Cockle
Gaper
Gaper
littleneck
Littleneck
Softshell
Softshell
No. Clams
Clams Measured
No.
Measured
Butter
Butter
Cockle
Cockle
Gaper
Gaper
littleneck
Littleneck
Softshe
11
Softshell
60
60
859
859
124.5
124.5
2.1
2.1
14.3
14.3
6.9
6.9
1984
1984
27
27
435
435
28.8
28,8
1.1
1.1
16.1
16.1
15.1
15.1
21.7
21.7
73.3
73.3
5.0
5.0
40.7
40.7
51.9
51.9
7.4
7.4
2.0
2.0
46.6
46.6
38.8
38.8
10.6
10.6
4.6
4.6
60.9
60.9
27.6
27.6
3.7
3.7
3.0
3.0
-
0.3
0.3
6.7
6.7
5.6
5.6
1.5
1.5
0.7
0.7
-
9.8
9.8
4.4
4.4
0.6
0.6
0.5
0.5
0.1
0.1
3,2
3.2
2.7
2.7
0.7
0.7
9.2
9,2
4.6
4.6
0.6
0.6
-
-
84.U
84.0
59.9
59.9
1UO.6
100.6
55.0
55.0
78.1
78.1
63.2
63.2
105.9
105.9
65.0
65.0
-
-
11
38
38
13
13
33
13
13
92
92
80
80
2
2
-
-
0.7
0.7
19
19
19
19
19
19
19
19
19
19
19
19
19
19
Tab
le 21,
21 .. ANNUAL
INTERVIEW DATA
DATA
Table
ANNUAL SUMMARY
SUMMARY OF
OF RF~~':ATIONAL
RF'ATIONAL INTERVIEW
Bay: Coos
Coos
Bay:
Tideflat:
Tideflat: Peterson
Peterson Flat
Flat
1983- 1984
No. Diggers
Diggers Sampled
Sampled
No.
No.
Sampled
No. Clams
Clams Sampled
No. Digger
Digger Hours
Hours
No.
Hours/trip
Hours/trip
Cl ams/trip
Clams/trip
Clams/hour
Clams/hour
Digger origin
origin (%)
(%)
Digger
~
12
12
235
235
23.5
23.5
2.0
2.0
19.6
19.6
10.0
10.0
44
54
54
5
5
1,3
1.3
13.5
13 .5
10.8
10.8
25.0
00
25.0
Local
Local
75.0
75.0
50.0
50.0
State
State
00
Non-State
Non-State
50,0
50.0
7.4
Bentnose
7.4
Species Comp.
Bentnose
Species
Compo (%)
(%)
8.1
8.1
Butter
Butter
21.
21.77
Cockle
Cockle
1.9
1.9
45.1
45.1
88.9
88.9
Gaper
Gaper
25.1
25.1
Littleneck
Littleneck
1.9
1.9
0
0
Softshe11
Softshell
Bentnose
1.0
Clams/trip
1.0
Clams/trip
Bentnose
1.6
1.6
Butter
Butter
4.3
4.3
0.3
0.3
Cockle
Cockle
8.8
12.0
8.8
12.0
Gaper
Gaper
4.9
4.9
0.3
0.3
Littleneck
Littleneck
0
0
Softshell
Softshe 11
0.8
Bentnose
0.8
Bentnose
Clams/hour
Clams/hour
0.8
0.8
Butter
Butter
2,2
0,2
Cockle
2.2
0.2
Cockle
4.5
4.5
9.6
9.6
Gaper
Gaper
2.5
2.5
0.2
0.2
Litt 1eneck
Littleneck
0
0
Soft
she 11
Softshell
Size Comp.
Compo (x
(x size)1/
size)l,
Size
Butter
Butter
Cockle
Cockle
113.7
Gaper
113.7
Gaper
Litt leneck
Littleneck
Softshell
Softshell
No. Clams
Clams Measured1!
Measured l /
No.
00
Butter
Butter
00
Cockle
Cockle
Goer
0
23
0
23
G~~er
Ll
tleneck
Littleneck
00
Softshell
Softshell
00
1/ Not
1/
Not taken
taken
19
19
19
19
19
19
19
19
19
19
Table
Table 22.
22.
ANNUAL SUMMARY
SUMMARY OF
OF RECREATIONAL
RECREATIONAL INTERVIEW
INTERVIEW DATA
DATA
ANNUAL
Tideflat: Pigeon
Pigeon Point
Point
Tideflat:
Bay: Coos
No. Diggers
Diggers Sampled
Sampled
No.
No. Clams
Clams Sampled
Sampled
No.
No.
No. Digger
Di~ger Hours
Hours
Hours/trip
Hours/trip
Clams/trip
Clams/trip
Clams/hour
origin (%)
(%)
Digger origin
Digger
w
O"l
Local
Local
State
State
Non-State
Non-State
Compo (%)
(%)
Species
Species Comp.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
Cl
ams/tri p
Clams/trip
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
shell
Soft
Softshell
Cl
ams/ hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
(x size)1/
size}l/
Size
Size Compo
Comp. (x
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt
leneck
Littleneck
Softshe11
Softshell
No.
Measured2!
No. Clams
Clams Measured1/
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe.ll
Softshell
1/
!.../
Not
Not
ken
ken
1983
1984
111
111
1,681
1,681
94.8
94.8
0.9
0.9
15.1
15.1
17.1
17
.7
43
43
679
679
70.0
10.0
1.6
1.6
15.8
15.8
9.7
9.7
45.9
45.9
48.6
48.6
5.4
5.4
65.1
65.1
27.9
21.9
7.0
7.0
27.1
27.1
0.1
0.7
51.2
51.2
20.9
20.9
36.4
36.4
8.0
8.0
32.7
32.1
22.5
22.5
0.6
0.6
-
4.1
4.1
0.1
0.1
7.7
1.1
3.2
3.2
-
4.8
4.8
0.1
0.1
9.1
9.1
3.7
3.7
-
5.4
5.4
1.3
1.3
5.2
5.2
3.6
3.6
0.1
0.1
3.5
3.5
0.8
0.8
3.2
3.2
2.2
2.2
0.1
0.1
85.9
85.9
37.9
37.9
108.0
108.0
67.2
67.2
104.5
104.5
62,0
62.0
-
-
84.8
84.8
-
44
44
77
46
46
93
93
9
9
50
50
-
-
-
52
52
19
19
19 .
19
19
19
19
19
19
19
Thble 23.
Table
23.
ANNUAL
SUMMARY OF
OF RECREATIONAL
RECREATIONAL INTERVIEW
INTERVIEW DATA
DATA
ANNUAL SUMMARY
Tideflat:
Sitka Flat
Flat
Tideftat: Sitka
Cot.,.)
Bay: COli.:>
Bay:
No. Diggers
Diggers Sampled
Sampled
No.
No. Clams
Clams Sampled
Sampled
No.
No. Digger
Digger Hours
Hours
No.
Hours/trip
Hours/trip
Cl
ams/tri p
Clams/trip
Clams/hour
Clams/hour
origin (%)
(%)
Oigger
Digger origin
Local
Local
~
State
State
Non-State
Non-State
Species
Compo (%)
(%1
Species Comp.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe
11
Softshell
Clams/trip
Clams/trip
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe11
Softshell
Clams7hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
51
ze Comp.
Comp:TxSi
ze )
Size
(x size)
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Li
tt 1eneck
Littleneck
Softshe11
Softshell
No.
Measured
No. Clams
Clams Measured
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt leneck
Littleneck
Softshe,ll
Softshe,ll
1983
1984
46
46
-
678
678
81.5
81.5
1.8
1.8
14.7
14.7
8.3
-
-
58.7
58.7
-
41.3
41.3
-
-
-
19.8
1.0
1.0
50.9
50.9
28.2
28.2
-
2.9
2.9
0.2
0.2
7.5
7.5
4.2
4.2
-
-
-
-
-
1.6
1.6
0.1
0.1
4.2
4.2
2.3
2.3
-
-
-
85.9
85.9
37.9
37.9
108.0
108,0
67.2
67.2
-
-
-
*
-
-
-
44
44
-
71
46
46
99
-
-
-
-
19
19
19
19
19
19
V
19
I!
19
19
19
Table 24.
Table
24.
ANNUAL SUMMARY
SUMMARY OF
OF RECREATIONAL
RECREATIONAL INTERVIEW
INTERVIEW DATA
ANNUAL
DATA
Tideflat:
Empire Flat
Flat
Tideflat: Empire
Bay: Coos
1983 No. Diggers
Diggers Sampled
Sampled
No.
No. Clams
Clams Sampled
Sampled
No.
No. Digger
Digger Hours
Hours
No.
Hoursltrip--­
Hours/trip
Clams/trip
Clams/trip
Clams/hour
Clams/hour
Digger
ori gfn{%}
Digger origin
(%)
Local
Local
State
State
w
00
Non-State
Non-State
Species
Camp. (%)
(%)
Species Comp.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
Clams/trip
Clams/trip
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe
11
Softshell
C1
ams7hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe 11
Softshell
Size
size)1!
Size Comp.
Camp. (x
rxsfzeTI7
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
No.
Cl ams Measured1/
Measured l !
No. Clams
Butter
Butter
Cock
1e
Cockle
Gaper
Gaper
Littleneck
Litt
1ene~k
Soft
<;hell
Softchell
--~~
1984 --- T9-- - .. 19-- . 19 - -Y9---- --- 19-------T9 - - - 19- - - 19
I!
70
70
99
1,057
180
1,057
180
99
99
99
-1-:-4-­ r.o
1.4
1.0
15.1
20.0
15.1
20.0
10.7
20.0
10.7
20.0
54.3
54.3
34.3
34.3
11.4
11.4
1.4
1.4
11.2
11.2
58.8
58.8
0.3
0.3
100.0
100.0
-
-
13.3
33.3
33.3
53.3
53.3
-
0.2
0.2
1.7
1.7
8.9
8.9
<0.1
<0.1
2.7
2.7
6.7
6.7
10.7
10.7
0.2
0.2
1.2
1.2
6.3
6.3
<0.1
<0.1
2.7
2.7
6.7
6.7
10.7
10.7
-
-
-
-
-
-
-
-
-
-
~~--------------------------
1/ Not
taken
Not taken
-
I!
19
19
Table
25.
Table 25.
ANNUAL SUMMARY
SUMMARY OF
OF Ir
ANNUAL
1EATIONAL
INTERVIEW DATA
DATA
EATIONAL INTERVIEW
Bay: Coos
Tideflat: North
Tideflat:
North Spit
Spit
1983
w
\.0
No. Diggers
Diggers Sampled
Sampled
No.
No. Clams
Clams Sampled
Sampled
No.
No.
Digger Hours
Hours
No. Digger
Hours/tri p
Hours/trip
Clams/trip
Clams/trip
Clams/hour
Clams/hour
Dfgger
orf9fn\J1
Digger origin
(%)
65
65
692
692
93
93
1.4
1.4
10.7
10.7
7.4
7.4
Local
Local State
State Non-State
Non-State Species Comp.
(%)
Species
Com~(%1
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshe11
Softshell
Clams/trip
Clams/ tri p
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Soft
shell
Softshell
Clams/hour
Clams/ hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
Size Comp.
Compo (x
(x size)
size)
Size
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
11
Softshe
Softshell
No.
Measured
No. Clams
Clams Measured
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
Littleneck
Softshell
Softshell
72.3
72.3
27.7
27.7
1984 -~19-
50
50
746
746
81.5
81.5
1.6
1.6
14.9
14.9
9.2
9.2
-
68.0
68.0
28.0
4.0
4.0
3.5
3.5
17.6
17.6
75.3
75.3
3,6
3.6
6.4
22.0
22.0
65.5
6.0
6.0
-
-
0.4
0.4
1.9
1.9
8.0
8.0
0.4
0.4
1.0
1.0
3.3
3.3
9.8
9.8
0.9
0.9
-
-
0.3
0.3
1.3
1.3
5.6
5.6
0.3
0.3
0.6
0.6
2.0
2.0
6.0
6.0
0.6
0.6
-
*
67.7
67.7
1U9.6
109.6
72.0
72.0
77
.0
77.0
62.2
62.2
111.2
111.2
59.5
59.5
-
-
2U
20
185
185
2
2
28
28
39
39
138
138
28
28
-
-
-
19
19
19
V
--~19
V
V
19
19
V
19
V
V
19
19
Table
Table 26.
26.
ANNUAL
SUMMARY OF
OF RECREATIONAL
RECREATIONAL INTERVIEW
INTERVIEW DATA
DATA
ANNUAL SUMMARY
Bay: Coos
Tideflat: Clam
Tideflat:
Clam Island
Island
131* 1983
No. Diggers
Diggers Sampled
Sampled
No.
No.
Clams Sampled
Sampled
No. Clams
No. Digger Hours
No.
Hours
Hours/trip
Hours/trip
Clams/trip
Clams/trip
Clams/hour
Clams/hour
Digger
origin (%)
(i)
Digger origin
loca 1
Local
State
State
Non-State
Non-State
Species
Compo (%)
(%)
Species Comp.
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Littleneck
litt leneck
Softshell
Softshell
Clamsltrip
Clams/trip
Butter
Butter
+:> 0
0
Cockle
Cockle
Gaper
Gaper
littleneck
Littleneck
Softshe 11
Softshell
Clams/hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
littleneck
Littleneck
Softshell
Softshell
Size
Compo (x
(x size)
size)
Size Comp.
Butter
Butter
Cock le
Cockle
Gaper
Gaper
lLittleneck
itt leneck
Softshell
Softshell
No.
No. Clams
Clams Measured
Measured
Butter
Butter
Cockle
Cockle
Gaper
Gaper
littleneck
Littleneck
Softc:;hell
Softchel1
1984
57
57
1,002
1,002
82
82
1.4
1.4
17.6
17.6
12.2
12.2
462
462
7,931
7,931
736.5
736.5
1.9
1.9
17.2
17.2
10.8
10.8
36.8
36.8
57.9
57.9
5.3
5.3
51.5
51.5
46,3
46.3
2.2
2.2
2.8
2,8
36.5
36.5
54.2
54.2
1.1
1.1
5.4
5.4
4,6
4.6
33.7
33.7
59.8
59.8
1.8
1.8
0.5
0.5
6.4
6.4
9.5
9.5
0.2
0.2
1.0
1.0
0.8
0.8
5.8
5.8
10.3
10.3
0.3
0.3
0.3
0.3
4.5
4.5
6.6
6.6
0.1
0.1
0.7
0.5
0.5
3.6
3.6
6.4
6.4
0.2
0.2
78.7
78.7
54.1
54.1
107.7
107.7
55.5
55,5
95.0
95.0
76.8
76.8
121.0
121,0
68.0
68.0
-
-
66
8
8
46
46
44
11
12
12
56
56
11
-
-
-
-
-
19
13
13
19
19
13
11
19
19
11
19
19
13
1!
19
13
19
19
Table
27.
Table 27.
ANNUAL SUMMARY
SUMMARY OF
OF
ANNUAL
r 'REATIONAL
INTEHVIEW DATA
DATA
'REAT1ONAL INTERVIEW
Tideflat:
Bandon Softshell
Softshell
Tideflat: Bandon
Bay:
Coquille
Bay: Coqui
11 e
No. Diggers
Diggers Sampled
Sampled
No.
No. Clams
Clams Sampled
Sampled
No.
No. Digger
Digger Hours
Hours
No.
Hours/tri p
Hours/trip
Clams/trip
Clams/trip
Clams/hour
Clams/hour
orf9in (%)
[%)
Digger origin
Digger
Local
Local
State
State
Non-State
Non-State
Comp: (%)
[%-J
Species Comp.
Species
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt
1eneck
Littleneck
Softshe11
Softshell
Clams/tripp
Clams7tri
.j::o
...... Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt
1eneck
Littleneck
Softshell
Softshell
CTams/hour
Clams/hour
Butter
Butter
Cockle
Cockle
Gaper
Gaper
Litt 1eneck
Littleneck
Softshe11
Softshell
Size
Size
com~xsrze}
TJ
Comp.
(x size)1!
Butter
­
Butter
Cockle
Cockle Gaper Gaper
Li tt 1eneck Littleneck
Soft
she 11 Softshell
No. Clams
Clams Measured1!
Measured I }
No.
Butter
-
Butter
COCkle
Cockle Gaper Gaper
Lit tl enec k Littleneck
Softshe11
Softshell 1j
1/
Not taken
taken
Not
1983
1983
1984
1984
6
6
215
215
55
0.8
0.8
35.8
35.8
43.0
43,0
11
36
36
1.5
1.5
1.5
1.5
36.0
36.0
24.0
24.0
100.0
100.0
-
-
-
-
100.0
100.0
-
-
-
-
-
-
-
-
100.0
100.0
100.0
100.0
-
-
-
-
-
-
-
35.8
35.8
-
36.0
36.0
-
-
-
-
-
-
-
-
43.0
43.0
24.0
24.0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
Table
28.
Table 28.
Summary
of Pounds
Pounds of
of Bay
Bay Clams
Reported Harvested
Harvested in
in Oregon,
Oregon,
Summary of
Clams Reported
1970-84.
1970-84.
Year
Year
Butter
Butter
Cockle
Cockle
1970
1970
88S
885
12,257
12,257
1,218
1,218
863
863
10,661
10,661
00
25,884
25,884
1971
1971
217
217
9,391
9,391
10,345
10,345
639
639
7,714
7,714
220
220
28,526
28,526
1972
1972
52
52
7,269
7,269
34,006
34,006
1,406
1,406
18,772
18,772
0
0
61,505
1973
1973
95
95
5,756
5,756
185
185
9,771
9,771
1,349
1,349
00
17,156
17,156
1974
1974
412
412
6,073
0
0
8,987
8,987
843
843
00
16,315
16,315
1975
1975
0
0
6,855
6,855
15,024
15,024
4,311
4,311
360
360
00
26,550
26,550
1976
1976
816
816
322
322
85,831
85,831
455
455
630
630
00
B8,054
88,054
1977
1977
607
607
859
859
81,775
232
232
1,366
1,366
894
894
85,733
1978
1978
1,452
1,452
6,717
6,717
207,685
207,685
1,056
1,056
16
16
0
0
216,926
216,926
1979
1979
606
606
2,299
2,299
91,028
00
979
979
00
94,912
94,912
1980
1980
40
40
2,244
2,244
74,459
74,459
4,268
4,268
.456
456
0
0
81,467
81,467
1981
1981
2,409
2,409
4,580
4,580
68,508
4,892
749
749
0
0
81,13B
81,138
1982
1982
3,654
3,654
10,517
10,517
106,440
106,440
13,231
13,231
248
248
0
0
134,105
1983
1983
4,035
4,035
2,579
2,579
95,091
34,444
34,444
36
36
0
0
136,185
136,185
1984
1984
4,842
4,842
17,919
17,919
50,573
50,573
46,874
46,874
366
366
0
0
120,574
120,574
Litt1eneck
Littleneck
. Gaper
Gaeer
42 42
Softshe11
Softshell
Macoma
Macorna
Total
Tota'
of Reported
in Major
Major Oregon
Oregon
Summary of
Commercial Harvest
Harvest of
of Bay
Bay Clams
Reported Commercial
Clams in
Table
29. Summary
Table 29.
Estuaries,
Estuaries, 1ge-84.
19-84.
Umpgua
Um~gua
Coos
Coos
Tota1
Total
0
0
10,631
10,631
4,522
25,884
25,884
00
0
0
7,459
7,459
10,893
10,893
28,306
28,306
57
57
70
70
0
0
6,105
6,105
44,642
44,642
61,505
61,505
1,191
1,191
00
00
0
0
786
786
2,853
2,853
17,156
17,156
9,309
9,309
2,409
2,409
398
398
00
0
0
445
445
3,232
3,232
16,675
16,675
00
4,637
4,637
00
00
13
13
0
0
309
309
21,553
21,553
26,512
26,512
19761/
1976V
00
820
820
00
0
0
480
480
0
0
a0
86,529
86,529
87,829
87,829
19771/
1977V
00
1,881
1,881
00
71 ,013
71,013
00
0
0
35
35
12,066
12,066
84,995
84,995
19781/
1978V
00
2,905
2,905
00
172,047
172,047
00
0
0
0
0
41,804
41,804
216,756
216,756
1979
1979
174
174
433
433
00
74,565
74,565
00
3,432
3,432
0
0
16,308
16,308
94,912
94,912
1980
1980
373
373
5,320
5,320
486
486
244
244
00
9,109
9,109
0
0
65.,935
65,935
81,467
81,467
1981
1981
65
65
4,259
4,259
00
128
128
00
684
684
0
0
76,002
76,002
81,138
81,138
19821/
1982V
10,862
10,862
11
,501
11,501
37
37
15
15
00
223
223
25
25
111,427
111,427
134,090
134,090
1983
1983
31,856
31,856
3,144
3,144
200
200
5,253
5,253
00
15
15
0
0
95,717
95,717
136,185
136,185
19841/
1984V
23,069
23,069
42,663
42,663
00
22
22
00
50
50
0
0
54,763
54,763
120,567
120,567
Tillamook
Tillamook
Netarts
Netarts
Siuslaw
Yaguina Alsea
Alsea Siuslaw
Year
Year
Nehalem
Nehalem
1970
1970
258
258
7,819
7,819
2,210
2,210
444
444
00
19711/
1971V
589
589
5,948
5,948
1,598
1,598
1,819
1,819
1972
1972
80
80
9,637
9,637
914
914
1973
1973
329
329
11,997
11,997
19741/
1974V
882
882
19751/
1975V
V
1
River, Astoria,
Astor; a, Bandon,
from Columbia
Bandon,
Totals
of clams
clams reported
Totals exclude
exclude landings
landings of
reported from
Columbia River,
Port Orford,
and Gold
Gold Beach.
Beach.
Port
Orford, and
43 Summary ofof Population
Table
30. Suninary
Population and
and Biomass
Biomass Estimates
Estimates for
for Yaquina,
Yaquina, Tillamook,
Tillamook, and
and
Table 30.
1984.
Nehalem Bays,
Nehalefi
Bays, 1984.
Yaguina
Yaquina
Numbers
Numbers
Bioinass
Biomass
Butter
Butter
1,000,000
1,000,000
N/A
N/A
7,850,400
7,850,400
2,171,800
2,171,800
260,000
260,000
N/A
N/A
Cockle
Cockle
80,000
80,000
N/A
N/A
8,773,900
8,773,900
1,023,400
1,023,400
100,000
100,000
N/A
N/A
3,527,700
3,527,700
1,462,300
1,462,300
807,100
807,100
180,000
180,000
N/A
N/A
4,262,400
4,262,400
Gaper
Gaper
5,600,000
5,600,000
Ti
llamook
Tillamook
Numbers
Biomass
Numbers
Biomass
Nehalem
NehaleT
Biomass
Numbers
Biomass
Numbers
Species
Species
Littleneck
Littleneck
440,000
440,000
N/A
N/A
11,082,900
11,082,900
875,600
875,600
Macoma sp.
sp.
Macoma
14,360,000
14,360,000
N/A
N/A
1,693,300
1,693,300
N/A
N/A
160,000
160,000
40,000
40,000
N/A
N/A
230,900
230,900
N/A
N/A
-
California
California
softshell
softshell
TOTAL
TOTAL
21,520,000
21,520,000
-
31,093,700
31,093,700
44
44 -
4,962,400
4,962,400
214,600
214,600
N/A
N/A
-
100
100
1978
1978
N"Z65
60
80
198Z
1982
N=Z71
N271
-
-
60
-
40
ZO
20
--~~
if1h
0
1977
1977
N
"III
N1ll
60
80
1961
1981
N:47
N=47
60
r-
40
W
(!)
~
""'U1"
rrr-rh
ZO
Z
W
0
Q:
60
<.:>
W
r­
n
I
1976
976
N"Z38
N238
a..
1984
1980
1980
N'297
N"297
Na
136
NI36
60
r­
40
40'
,.­
n-,
r ~
Th___________
r-
ZO
20
-
0
t-:t--.-....r:­
-
60
80
_r-
.........
II.
..r-r 1975
1975
1979
1979
1963
1983
N:2129
N=Z129
Nz312
N-312
N=
99
499
60
r-
-
40
f-­
ZO
o
0-
1976
1976
n
74
72
70
68
66
YEAR - CLASS
YEAR-CLASS
Figure 1.
1.
Figure
f-n
~
.r­
64
64
62
60
1978
1978
76
74
74
72
70
68
66
YEAR
- CLASS
YEAR-CLASS
.r
66
64
62
6Z 1986
1966
84
82
6Z
80
78
76
l"­
Ih
74
72
i
70
YEAR - CLASS
YEAR-CLASS
Age Composition
Composition of
of Coniriercial
Commercial Subtidal
Point, Coos
Coos Bay,
Bay,
Age
Subtidal Gaper
Gaper Clam
Clam Harvest,
Harvest, Pigeon
Pigeon Point,
1975-84.
1975-84.
·­
Ui
0
4
z
Ui
Ui
a-
1984
N:l408
80 60 .
40 ~
.-­
20 o
86
66
- -,.
84
80 78 76 82
VEAR -- Ct.AS•.
YE*R
CLASS Figure2. Age
Figure··2.
Composition of
of Commercial
Commercial Subtidal
Subtidal Native
Native Littleneck
Littleneck Clam
Clam
Age Composition
Harvest. Tillamook
Tillamook Bay,
Bay. 1984.
1984.
Harvest,
46 .­
111 CD
~
z
Z
111 U
U
a:
w
'"
Q,.
0.
eo
198"
N- 306 60 .
~
~
20 n
S
o
86
84
86 84
82
80
78
76 YEAR
CLASS
YEAR ...'CL
ASS
Figure 3.
3. Age
of Commercial
Commercial Subtidal
Subtidal Cockle
Cockle Clam
Clam Harvest,
Harvest,
Age Composition
Composition of
Figure
Tillamook Bay,
1984.
Tillarriook
Bay, 1984.
47
47 -
.
...'"Izz
I-
'"w
U
II:
1.IJ
a.
t
1984
NI(l240
80 60 40 ...-
20 o
,
. ...-
86
84
82
~
80
n-.
78
'76
74 YEAR -CLAS S
YEARCLASS
Figure
4. .l\ge
of Commercial
Commercial Subtidal
Subtidal Native
Native Littleneck
Littleneck
Age Composition of
Figure 4,
Clam Harvest,
Harvest, Nehalem
Nehalem Bay,
Bay, 1984.
1984.
48 /
"
0
~:~;)
~o
tJ
Ul
...
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AY CITY
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T
AL _II Q
A
L
4
llV
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.p:.
1.0
B
B
LEGEND
Plot No.
!!t_!_
66
77
8
99
10
10
11
11
12
12
13
13
14
14
Date
Date
3-14-84
3
14 84
3-14-84
3 14 84
3-14-84
3-14-84
5-07-84
5-07-84
7-15-84
7-15-84
7-31-84
7-31-84
11-21-84
11-21-84
11-21-84
11-21-84
11-21-84
11-21-84
A
A
~/l
Y
II
f
':,... \ . . . . . . I
.!
Mdk
adults
adults
adults
adults
set
set
adults
adults
adults
adults
adults
adults
adults
adults
adults
adults
adults
adults
i
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r
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No. Planted
Planted
No
1,150
1,150
700
700
4,000
4,000
2,400
2,400
1.000
1,000
300
300
3.400
3,400
3,400
3,400
13,500
13,500
i
\>....
I.'
.
•
Figure
5.
Figure 5.
i
\.
'~"
f""
-­
~
.
\1>'­
4
~-~.-.,.,
".
... ~ ',.,' " "r>,;.., ",,':',:, \::;"\i:~~;;":"':\;"":": ;.,. ~;~y.:;,.
J
Summary
of Manila
Manila Littleneck
Littleneck Clam
Clam Releases
Releases in
in Tillamook
Tillamook Bay,
Bay, 1984.
1984.
Summary of
(oswi11
o1nt
$<:41.
o.
.'
,
*
(fnt)
(f.tt)
1000
2001)
2000
3001)
3000
*
o4r S4SV
&*R$C
%LHC(
CENTER
SOUTH
CUTN IC.t.e:H
(AC$
-
?
,..---~
\\
Survey Areas
Areas in
in Neha1ern
Nehalem, Tillamook,
Tillamook, and
and
Subtidal Survey
Figure 6.
6. Subtidal
Figure
Yaquina Bays,
Bays9 1984.
1984.
Yaquina
50
50
Lancn Cov*
100
(00
80
1918
(978
N:633
N633
60
1982
(982
NIl8
N"1I8
-
.
r-
40
20
n
tn-n
..r
0
'.
-
;­
80
.
OJ-,=,~
r
1911
1977
N =1,759
NI759
60
1981
N=370
N370
40
W
CD
<.!l
I......
(J1
01
20
{:!
Z
W
0C)
II:
W
Cl.
0
-
.
80
n
..r-L
__J1____..
_1L__
;-
1976
(976
N:I,534
N
=1,534
r-
1980
(980
N:663
N=663
1984
(984
,."140
Nl40
60
40
20
a:
DLJ:
0
80
60
40
-
1915
1975 N=
2,178 N2,I78
r--
.
Jl
r---.--.
...-r-
1979
N:667
N=661
Figure 7.
Figure
7.
Ir~
1983
(983
N:190
N=190
-
.
20
o
0
~
,....
.
rr
1979
ii
71
-
i
15
............,.
.,Cl,.
-___J1---r11-__
f
73
Il
71
O
69
YEAR-GLASS
YEAR -CLASS
b(
67
b
65
5-n I--r-1
b
63
1982
O
80
(8
78
76
16
74
14
72
YEAR-GLASS
YEAR - CLASS
70
68
66
1986 84
84
(986
Age Composition
Age
Composition of
of Subtidal
Subtidal Gaper
Clams, Area
Area 2,
2, Yaquina
Yaquina Bay,
Bay, 1975-84.
1975-84.
Gaper Clams,
82
80
60
78
78
16
76
YEAR - CLASS
YEAR-CLASS
74
74
12
72
10
70
.
:
\
0
1984
I 800
N
". l:I
102
60
60
/'
I ,0
L_ I H­
-
o
o
!--.
--1
1 Ii
I
-
r
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1976
197$
N
N :. 49
s800
60
60
40
_.
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0
22:
o
~,
88
'6
84
82.
80
78
lb
76
14
7~
TZ
72.
I~68 66
66 64 62. 60
TO
70
6~
62
YEAR - CLASS
YEAR
CLASS
Figure 8.
8.
Figure
Age
Butter C]ams,
Clams, Ti]
Tillamook
1976, 1984.
1984.
!tge Composition
Composition of
of Subtidal
Subtida] 3utter
lanook Bay.
Bay, 1976,
52 0
o,_
1984 80 NS 04
114 N'
w 60 ..,
tTl
w
~
t-
..,uz 40
a:
.., 20 a.
0
1976
1916 80
00 N239
~=15.
60 40 20 01
86
'
84 82
Figure
9.
Figure 9.
80
78
,
,
I
,
7&
76 74 72
72
YEAR-CLASS
YEAR-C LASS I
70
10
I
I
68
68
I
I
I
I
66 Age
Composition of
of Subtidal
Subtidal Cockle
Cockle Clams,
Clams, Tillamook
Tillamook 8ay,
Bay. 1976,
1976, 1984.
1984. Age Composition
1984
Nal9
NIS
8(
3
6(
.....
4C
~
Z
....z
'U
o0
2C
'Ii
CD
0
a:: 8C
....
1978
$976
Na271
$s271
a..
-
6C
4c
20
0
0~--'~--6~8~4~8=2~8~O~~~~~~~~~~~6~4~--~
84 82 80 78 76 ,4 72 70 68 66 64
YE AR GLASS
Figure 10.
10. Age
Age Composition
Composition of
of Subtidal
Subtidal Gaper
Gaper Clams,
Clams, Tillamook
Tillamook Bay,
Bay, 1976,
1976,
Figure
1984.
1984.
54
"
0
0
LU
I.LI
w
~
ct
4
zz
w
LU
u
U
lI-
8~
.98A
1984
N:. $44
144
N:
ec
•
(JI:
ec
(JIG:
40
20
0
8~
.176
i876
H:= 163
H
'13
ec
80
4(
20
o
•
84
84
82
82
Figure.ll.
Figure 11.
ao
80
IIIII
78
78
76 74- 72 70
Y£AR - CLASS
YEAR
CLASS
t=l==al
­
886
Age
Composition of
of Subtidal
Subtidal Littleneck
Littleneck Clams,
Clams, Tillaniook
Tillamook Bay,
Bay, 1976,
1976, 1984.
1984.
Age Composition
..
/
1984
984
N: 213
213
80
30 60 40 -
20 100 -,
.J
I
-
rlr
1'""1.
1983
1983
80 LLJ
Ui
C!)
CD
~
Z
z
N
=670
N670
60
50 LLJ 40
(.)
()
a::
LLJ
Ui
Q.
r - - r-._
20 ---rol984
1984
82 80
82
r""L 78
76
74
7Z 72
YEAR-CLASS Figure
12. Age
Composition of
of Subtidal
Subtidal Native
Native Littleneck
Littleneck Clams,
Clams, Age Composition
Figure 12.
Nehalem Bay,
Bay, 1983-34.
1983-34. Nehalem
56 56
I
~
)"
'1
,
"
OREGON
( 1
Fish. Wi1dlif.
Post
Post Office
OfficeBox
Box3503
3503
Portland,
Portland,Oregon
Oregon 97208
,
,
)
,