SESSF Total Allowable
Catch recommendations for the
2014-15 season
Introduction
This paper outlines AFMA Management’s recommendations for total allowable catches
(TACs) for species in the Southern and Eastern Scalefish and Shark Fishery (SESSF) for
the 2014-15 season, commencing 1 May 2014.
This paper is to provide you with an opportunity to consider AFMA Management’s TAC
recommendations before the South East Management Advisory Committee (SEMAC)
TAC meeting on 30-31 January 2014. If you have any questions or comments, please
raise them with the relevant member of SEMAC (http://www.afma.gov.au/managing-ourfisheries/consultation/management-advisory-committees/south-east-mac/membership/) or
AFMA Manager (Marcus Finn for Trawl and Great Australian Bight on 02 6225 5433 or
David Power for Gillnet, Hook and Trap on 02 6225 5475). SEMAC will not be
discussing Bight Redfish and Deepwater Flathead which are considered by the Great
Australian Bight Industry Association (GABIA) and the Great Australian Bight
Management Advisory Committee (GABMAC).
The commentary below summarises some of the issues considered by SESSF Resource
Assessment Groups (RAGs) and AFMA Management in making its TAC
recommendations. Also relevant are stock assessment outcomes, harvest strategy control
rules, TAC setting principles and rebuilding strategies.
This paper does not represent the views of the AFMA Commission and the Commission
may make decisions that are different to the AFMA Management recommendations in
this paper.
GABIA will assess the changes to catch rates of Great Australian Bight (GAB) species.
SESSF Harvest Strategy Framework, stock assessment methods and
TAC setting process in 2012
The SESSF Harvest Strategy Framework (HSF) uses harvest control rules to determine a
recommended biological catch (RBC) for each stock in the SESSF quota management
system. HSF rules are then applied to the RBCs to derive the TAC recommendations by
AFMA Management The HSF has been updated a number of times, most recently in
2013, and is available on the AFMA website at http://www.afma.gov.au/managing-ourfisheries/harvest-strategies/.
Calculating the TAC
Step 1: Calculating a Recommended Biological Catch (RBC)
The RBCs are developed by SESSF RAGs. Under the HSF, stocks are assigned to one of
three tier levels depending on how much information is known about them. Tier 1 stocks
have the highest level of information and this information is used in a stock assessment
model to estimate the size of the stock. Assessments for Tier 3 stocks are based on
AFMA Management TAC recommendations for the 2014-15 fishing season
2
estimates of fishing mortality, while Tier 4 stock assessments are based on catch per unit
effort (CPUE). The Tier 2 level is no longer used.
Step 2: Commonwealth RBCs
For most species, the Commonwealth RBC (recommended biological catch for
Commonwealth waters) is calculated by:


applying a discount factor to RBCs for Tier 3 and Tier 4 species due to the lower
level of certainty in these assessments. As a default, the RBCs are discounted by
5% for Tier 3 species and 15% for Tier 4 species, unless there is precaution
afforded through other measures
subtracting discarded catch and catch taken by other sectors or jurisdictions (e.g.
state and recreational sectors) from the RBC.
Step 3: Total Allowable Catch (TAC)
Under the Small and Large Change Limiting rules, the Commonwealth TACs are
prevented from changing by small (less than 10% or 50t) or large (more than 50%)
amounts from year to year.
While AFMA Management recommendations generally reflect a direct application of the
harvest control rules and TAC setting principles, in some cases other considerations have
been taken into account. Three species – Blue Warehou, Eastern Gemfish and School
Shark – are subject to rebuilding strategies and incidental catch TACs. This means that
there is no targeted fishing for these species. Orange Roughy is subject to the Orange
Roughy Conservation Programme which sets out various management arrangements to
protect the species. The programme is under review this year and AFMA will continue to
work with industry to promote further rebuilding.
Multi-Year TACs
The use of multi-year TACs can reduce stock assessment costs and provide more stability
around fluctuating TACs.
When a multi-year TAC is set the RAGs develop indicators, or ‘break out rules’, to
ensure that stocks remain within acceptable risk boundaries each year and are reassessed
if necessary.
Research Catch/Effort Allowance
The AFMA Commission may allocate Research Catch Allowance (RCA) for research
projects. The amount of RCA is determined in accordance with the AFMA Research
Catch and Effort Allowance Policy and is allocated within the recommended sustainable
AFMA Management TAC recommendations for the 2014-15 fishing season
3
catch of that species. This can either be included within, or in addition to, the TACs.
Changes in amounts of research catch between fishing years may cause variations in
multi-year TACs.
Research Catch Allowance for the Fishery Independent Surveys (FIS) is to be determined
after a survey has taken place. That is, the actual FIS research catch of each quota species
is deducted from the next year’s TAC. There is a review trigger for this arrangement if
the total catch (quota and/or non-quota species) for the FIS increases by 10% above the
previous total FIS catch. If the trigger is reached, catches will be reviewed with input
from RAGs.
Overcatch and undercatch
Overcatch and undercatch provisions can be set at up to 10% of the TAC to allow
flexibility between fishing seasons. The amount of quota over caught (or under caught) in
a fishing year will be subtracted from (or added to) the operator’s quota allocation for
that species in the following season. The RAGs make recommendations to the AFMA
Commission on the overcatch and undercatch amounts to be applied.
Alternative target reference point
TACs for most SESSF species currently reflect the target level for maximum economic
yield (MEY) for that individual species by using an MEY proxy of 48% of the unfished
spawning biomass. SESSFRAG has proposed that, instead of setting each individual
species’ TAC based on an MEY target, the objective of maximising economic returns is
better pursued by setting TACs for some secondary species (commercially less important
and not generally targeted) at a biological target of 40% of unfished spawning biomass.
This year, following recommendations from SEMAC and SESSFRAG last year, AFMA
Management are proposing 40% targets for Ocean Perch and Ribaldo. The aim is to
achieve biologically sustainable catches, but not unduly restrict the ability to achieve
MEY for key target species. Other secondary species may move to alternative targets in
future seasons consistent with the Commonwealth Harvest Strategy Policy (HSP).
Individual species summaries
Please note that those species with (MYTAC) next to them are recommended for a multiyear TAC.
AFMA Management TAC recommendations for the 2014-15 fishing season
4
1.1. Alfonsino (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15 RBC
2014/15 AFMA 2014/15 Change from
C’wealth TAC
2013/14
RBC
recommendation
89t
1125t
3
1 year: 1070t 1017t
3 year: 1070t
1017t (1st year -108t
of a 3 year
MYTAC)
In 2013, the Tier 3 assessment was updated with additional age data. SlopeRAG
considered that the Alfonsino stock extends beyond the Australian Fishing Zone (AFZ) to
the high seas. For this reason, high seas catch just outside the AFZ was considered as part
of the assessment. In recommending the RBC, the RAG took a biologically conservative
approach and subtracted high seas catches from the RBC.
The RAG agreed with the assessment and the application of the 5% Tier 3 discount factor
to recommend a three year RBC of 1070 tonnes, with a review to occur if catches
increase to over 70% of TAC.
Consistent with the RAG advice, after deducting the discount factor, AFMA
Management recommends setting a TAC of 1017 tonnes for the 2013-14, 2014-15 and
2015-16 seasons. It also recommends that the percentage for undercatch and overcatch be
determined at 10%.
1.2. Blue-eye Trevalla
2012/13
Catch
2013/14
TAC
Tier
332t
388t
4
2014/15
RBC
269t
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
229t
229t
-119t
A single stock is assumed for Blue-eye Trevalla across the SESSF. Trends in catch rates
differ between the eastern and western part of the fishery, with catch rates in the west
being variable with a relatively flat trend, while eastern catch rates have exhibited
depletion over the last 5 years. The RAG also noted that, while adults stayed near specific
features (e.g. seamounts) for relatively long periods of time, there was enough juvenile
and adult movement to allow the RBC to apply for the entire fishery.
In making recommendations for 2014-15, the RAG noted that last year it did not have
sufficient confidence in the Tier 4 assessment to use it for an RBC recommendation.
Instead, the 2012-13 RBC was continued through to 2013-14 with recommendations for
additional scientific work around the effect of Killer Whales, the New Zealand
experience with Blue-eye Trevalla and the effects of closures and fishing on seamounts.
AFMA Management TAC recommendations for the 2014-15 fishing season
5
Although this additional work was undertaken, some uncertainties with the assessment
remain.
In 2013, the Tier 4 assessment treated eastern and western zones separately to better
account for spatial differences in stock depletion. The RAG noted that the assessment did
not account for the potential influence of Killer Whale depletion of catches or the effect
of recent spatial closures, and so was inherently conservative. For this reason, and the
additional precaution provided by closures, the RAG recommended that the default Tier 4
discount factor of 15% should not apply to TAC-setting for 2014-15.
The RAG recommended that Blue-eye Trevalla be reassessed in 2014 to allow the effect
of spatial closures and Killer Whales to be better dealt with, but noted that there was
currently a lack of information available to treat Killer Whale depredation in an evidencebased manner.
Consistent with the RAG’s advice, AFMA Management recommends that the TAC be set
at 229 tonnes for one fishing season (2014-15). It also recommends that the percentage
for undercatch and overcatch be determined at 10% and that no discount factor be
applied.
1.3. Blue Grenadier (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
3718t
5208t
1
1
year: 8810t
8065t
year)
3
year:
8810t
AFMA 2014/15 Change
TAC
from
recommendation 2013/14
(3 7812t (1st year +2604t
after
large
change
rule)
8810t (2nd and
3rd year)
5
year:
8677t
In 2013, the 2011 assessment was updated with new data up to 2012. The updated
assessment estimated a large recruitment event in 2010 which provides an optimistic
outlook but will need to be monitored to see if it flows through to future catches. The
stock was assessed as being above the target reference point (at 77% of unfished biomass
in 2012) and trending upwards. In 2014 the stock is estimated to be at 90% of unfished
biomass. The RAG recommended a:



one year RBC of 8065 tonnes;
three year RBC of 8810 tonnes; or
five year RBC of 8677 tonnes.
SlopeRAG recommended a review of the Blue Grenadier multi-year TAC if:
AFMA Management TAC recommendations for the 2014-15 fishing season
6




the most recent observed value for the standardised non-spawning CPUE falls
outside of the 95% confidence interval of the value for the standardised nonspawning CPUE predicted by the most recent Tier 1 stock assessment; or
the most recent observed value for the standardised non-spawning CPUE from the
acoustic survey falls outside of the 95% confidence interval of the value for the
standardised non-spawning CPUE predicted from the acoustic survey (when
survey values are available); or
less than 70% of the TAC was caught; or
the observed age composition is significantly different to that projected.
AFMA Management recommends a TAC of 7812t in the 2014-15 season (after applying
the large change limiting rule), and 8810t in the 2015-16 and 2016-17 seasons. It also
recommends that the percentage for undercatch and overcatch be determined at 10%.
1.4. Blue Warehou
2012/13
Catch
2013/14
Tier
TAC
(incidental)
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
48t
118t
0t
0t
118t
4
0t
ShelfRAG noted that Blue Warehou was being assessed for listing under the Environment
Protection and Biodiversity Conservation Act 1999 (EPBC Act) for decision by 30
September 2014.
A workshop was held on 22-23 April 2013 to assist in determining a suitable index of
abundance and ensure the best possible recovery estimates for Blue Warehou. The
workshop noted difficulties with using CPUE as index and recommended looking at the
Tier 4 assessment in more detail, in addition to alternative approaches.
The Tier 4 assessment showed that standardised catch rates remain below the limit
reference points for both the east and west stocks, resulting in an RBC of 0t. The RAG
recommended continuing the incidental catch of 118t. No overcatch and undercatch
provisions were recommended because the TAC is set at a level intended to allow landing
of incidental catches only. The discount factor does not apply to species under an
incidental catch TAC.
ShelfRAG noted that there appeared to be low levels of targeted fishing however the
RAG had less confidence in the targeting analysis this year than previous years given the
very low catch levels.
AFMA Management TAC recommendations for the 2014-15 fishing season
7
Consistent with the advice of ShelfRAG, AFMA Management recommends that the
incidental TAC be set at 118 tonnes with no percentage determined for overcatch or
undercatch.
1.5. Bight Redfish (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
267t
2358t
1
na
na
2358t (3rd year of 0t
a three year
MYTAC)
The 2014-15 season is the final year of a three year TAC for Bight Redfish. In 2013,
GABRAG considered the following breakout rules for Bight Redfish that were developed
in 2011:


if the most recent observed value for the standardised CPUE falls outside of the
95% confidence interval of the value for the CPUE predicted by the most recent
Tier 1 stock assessment; or
if the most recent observed value for the CPUE from the Fishery Independent
Survey falls outside of the 95% confidence interval of the value for the CPUE
predicted from the Fishery Independent Survey (when survey values are
available).
GABRAG reviewed data from the fishery and agreed that Bight Redfish had not
breached the breakout rules but noted lower catch in recent years. The age frequency data
did not give rise to concerns.
Consistent with GABRAG advice, AFMA Management recommends continuing with the
final year of the existing three year TAC of 2358 tonnes. It also recommends that the
percentage for undercatch and overcatch be determined at 10%.
AFMA Management TAC recommendations for the 2014-15 fishing season
8
1.6. Deepwater Flathead (MYTAC)
2012/13
Catch
2013/14
TAC
Tier 2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
948t
1150t
1
2014/15:
1,146t
2014/15:
1,146t
2015/16:
1,122t
2015/16:
1,122t
1,150t (1st year 0t
of a three year
MYTAC)
2016/17:
1,112t
2016/17:
1,112t
In 2013, the Tier 1 assessment gave an RBC of 1146 tonnes, with the long term RBC of
1016 tonnes.
GABRAG recommended a multi-year RBC of 1146 tonnes in 2014-15, 1122 tonnes in
2015-16 and 1112 tonnes in 2016-17.
The RAG also recommended a review of the multi-year TAC if:


the most recent observed value for the standardised CPUE falls outside of the
95% confidence interval of the value for the CPUE predicted by the most recent
Tier 1 stock assessment; or
the most recent observed value for the CPUE from the Fishery Independent
Survey falls outside of the 95% confidence interval of the value for the CPUE
predicted from the Fishery Independent Survey (when survey values are
available).
Consistent with GABRAG advice, AFMA Management recommends a three year TAC
of 1150 tonnes in the 2014-15, 2015-16 and 2016-17 seasons (after applying the small
change limiting rule). It also recommends that the percentage for undercatch and
overcatch be determined at 10%.
1.7. Deepwater shark basket – east (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
27t
85t
4
1 year: 78t 3 year: 47t
3 year: 47t
AFMA 2014/15 Change from
TAC
2013/14
recommendation
47t (1st year of a -38t
3 year MYTAC)
AFMA Management TAC recommendations for the 2014-15 fishing season
9
The RAG noted that catches of deepwater shark eastern basket have remained low
because of large depth closures covering much of the stock. The RAG noted concerns
that the CPUE was determined from a small area of the stock that was open to fishing and
that this may not be representative of the whole stock. The CPUE trend is declining and
is currently below the target.
In 2013, the updated Tier 4 assessment produced an RBC of 78 tonnes for 2014-15. The
RAG recommended:


a one year RBC of 78 tonnes; or
a three year RBC of 47 tonnes. This RBC was recommended on the basis of the
average of the three most recent CPUE points (instead of the most recent four
points as is normally the case– see below) on a precautionary basis.
The RAG recommended a review of the three year TAC if catches in the second and third
years of the multi-year TAC are lower than the average catch of the last three years.
The RAG agreed that existing closures in the fishery provided sufficient precaution for
the stock and recommended that the 15% Tier 4 discount not apply. It agreed that 10%
overcatch and undercatch should apply.
Consistent with the advice of SlopeRAG, AFMA Management recommends that the TAC
be set at 47 tonnes for each of the next three years. It also recommends that the
percentage for undercatch and overcatch be determined at 10%.
AFMA Management TAC recommendations for the 2014-15 fishing season
10
1.8. Deepwater shark basket – west (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change
TAC
from
recommendation 2013/14
64t
215t
4
1
year: 3
year: 263t (1st year of +48t
300t
263t
a
3
year
MYTAC)
3
year:
263t
Long term:
124t
As with deepwater shark east, catches of deepwater shark west are constrained by
deepwater closures. Standardised catch rates in the western zone are currently higher than
catches rates in the reference period.
The RAG recommended:



a one year RBC of 300 tonnes; or
a three year multi-year RBC of 263 tonnes, using the three most recent CPUE
points on a conservative basis (as for Deepwater Shark East) with a review if
catches in the second or third year are lower than the average catch over the last
three years; or
a long term RBC of 124 tonnes until catches reach this level.
Consistent with the advice of SlopeRAG, AFMA Management recommends that a TAC
be set at 263 tonnes for each of the next three years. It also recommends that the
percentage for undercatch and overcatch be determined at 10%.
1.9. Elephant Fish
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
72t
109t
4
116t
116t
109t
0t
SharkRAG noted that estimates of discards were improving over time, but that there was
not currently a sufficient time series for including discards in the assessment. As a result
Shark RAG selected the Tier 4 analysis without discards which was 116t. The RAG did
not recommend a multi-year RBC on the basis that further information on discards is
required.
AFMA Management TAC recommendations for the 2014-15 fishing season
11
Despite being uncertain as to the index of abundance for Elephantfish, SharkRAG did not
have concerns about the current status of the stock based on the available catch and effort
information. SharkRAG did not recommend applying the Tier 4 discount of 15% because
of closures in inshore areas and in South Australia.
Consistent with the advice of SharkRAG, AFMA Management recommends that the
TAC for the 2014-15 season be set at 109 tonnes after applying the small change limiting
rule. It also recommends that the percentage for undercatch and overcatch be determined
at 10%. Consistent with the RAG’s recommendation, AFMA Management recommends
that no discount factor be applied.
1.10. Flathead (tiger) (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15 RBC 2014/15 AFMA 2014/15 Change from
C’wealth TAC
2013/14
RBC
recommendation
2701t
2750t
1
1 year: 3428t
2878t
3 year: 3334t
2878t (1st year +128t
of a three year
MYTAC)
5 year: 3252t
In 2013 the 2010 Tier 1 assessment was updated to provide an estimate of stock status in
2014. Additional data included catch, discards, CPUE, length and age data, additional
years of recruitment estimates and the Fishery Independent Survey results.
The assessment estimates that current spawning biomass is at 50% of the unfished stock
biomass, which is above the target of 40% of the unfished stock biomass. This reflects
estimates of recent strong recruitment.
The RAG recommended three possible RBCs:



a one year RBC of 3428 tonnes; or
a three year multi-year RBC of 3334 tonnes, using an average RBC over that
period; or
a five year multi-year RBC of 3252 tonnes, using an average RBC over that
period.
The RAG proposed a review of the multi-year TAC if:


the most recent observed value for either the Danish seine or trawl methods’
standardised CPUE falls outside of the 95% confidence interval of the value for
the CPUE predicted by the most recent Tier 1 stock assessment; or
the actual total mortality is greater or less than the projected total mortality by
more than 20%.
AFMA Management TAC recommendations for the 2014-15 fishing season
12
Having considered the proposed RBCs and deducting State catches and discards, AFMA
Management recommends a TAC for flathead of 2878 tonnes for three seasons; 2014/15,
2015/16 and 2016/17. It also recommends that the percentage for undercatch and
overcatch be determined at 10%.
1.11. Gemfish – East (MYTAC)
2012/13
Catch
2013/14
Tier
TAC
(incidental)
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
63t
100t
0t
0t
100t (1st year of 0t
a three year
MYTAC)
1
This stock has been classified as overfished since the commencement of the Bureau of
Rural Sciences (BRS) (now the Australian Bureau of Agricultural and Resource
Economics and Sciences (ABARES)) Stock Status Reports in 1992. Eastern Gemfish is
currently listed as conservation dependent under the EPBC Act and is under a rebuilding
strategy. No targeting has been permitted since 2002, but AFMA Management accepts
that an incidental catch of Eastern Gemfish is likely to be taken in association with
fishing for Mirror Dory and Blue Grenadier.
The RAG noted that discard rates of Eastern Gemfish had declined substantially, and that
discarding was now lower than landed catch. The RAG noted industry’s position that
concession holders were doing a good job of avoiding Eastern Gemfish, and that a
reduction to the incidental catch TAC may increase discarding without further reducing
total fishing mortality.
During 2013, AFMA Management revisited previous Tier 1 assessments to consider the
impact of different levels of catch on stock status. That is, if catches were higher than has
previously been reported, could the stock be more productive than estimated (such that if
catches were controlled it would rebuild faster) or otherwise explain why the stock is not
rebuilding. However, when a series of higher catches was included in the model, the
impact was minor.
The RAG agreed that Eastern Gemfish were a good candidate for a multi-year TAC, and
recommended continuing the current incidental catch TAC of 100t for three years while
monitoring total catch and catch rates for significant variation.
AFMA Management considers a TAC of 100t to be appropriate to minimise targeting and
reduce the amount of discards. AFMA Management recommends an incidental TAC of
100t for the 2014-15, 2015-16 and 2016-17 seasons, to be managed under the Eastern
AFMA Management TAC recommendations for the 2014-15 fishing season
13
Gemfish Rebuilding Strategy. It also recommends that no overcatch or undercatch
percentage be set for the 2013-14 fishing season.
1.12. Gemfish – West (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
54t
199t
1
3 year:
247t
183t
199t (1st year of 0t
a three year
MYTAC)
Western Gemfish occur within the Commonwealth Trawl Sector (CTS), Gillnet, Hook
and Trap (GHAT) and Great Australian Bight (GAB) Trawl Sector. Western Gemfish
caught under CTS and GHAT concessions must be covered with quota, while the GAB
Trawl Sector that operates in the western part of the fishery is managed under a trigger
limit.
Two assessments were completed for Western Gemfish in 2013:


a Tier 1 assessment that covers the entire SESSF stock of Western Gemfish (i.e.
GAB, CTS and GHAT)
a Tier 4 assessment that uses data from the quota-managed portion of the Western
Gemfish distribution (approximately Kangaroo Island east to Tasmania).
GABRAG considered the updated Tier 1 assessment for Western Gemfish but noted
some uncertainty with catch rates, sensitivity to length frequency data, stock structure and
where and when spawning fish occur. The Tier 1 assessment produced an RBC for the
entire Western Gemfish distribution in the SESSF of 676 tonnes.
The Tier 4 assessment was conducted using data from the CTS and GHAT zones where
Western Gemfish are caught (western Tasmania and western Victoria). Given the
additional work the RAG recommended for the Tier 1 assessment, the lack of an agreed
mechanism to split the Tier 1 RBC for the entire Western Gemfish distribution into GAB
and CTS/GHAT components, and because the Tier 4 assessment applies specifically to
the area of the quota-managed fishery, the RAG agreed to use the Tier 4 assessment to
recommend the RBC. In recommending an RBC for the CTS/GHAT, GABRAG used the
Tier 4 assessment to recommend:


a one year RBC of 346 tonnes; or
a three year multi-year RBC of 247 tonnes, reflecting catch rates over the
reference period.
AFMA Management TAC recommendations for the 2014-15 fishing season
14
AFMA Management recommends a TAC for Western Gemfish of 199 tonnes for three
seasons, 2014-15, 2015-16 and 2016-17. It also recommends that the percentage for
undercatch and overcatch be determined at 10%.
1.13. Gummy Shark (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
1373t
1836t
1
3 year:
2010t
1918t
1836 (1st year of 0t
a three year
MYTAC)
Based on the updated stock assessment conducted in 2013, SharkRAG recommended a
three year RBC of 2010 tonnes. This included a model scenario with 75% of South
Australian catch caught on longlines and close to 100% of catch caught with gillnets for
the remainder of the fishery. This reflects the current and expected fishing activity.
After adjusting for State allocations, the RBC of 2010 tonnes would produce a
Commonwealth TAC of 1918 tonnes. However, the RAG expressed the need for caution
when increasing the Commonwealth TAC above the current level of 1836 tonnes and
noted that in setting the TAC the following factors should be taken into account:



reported catches of shark from holders of State issued Marine Scalefish
concessions in South Australia have been high (161 tonnes) and there remains
uncertainty regarding the species identification of these catches. AFMA and the
RAG is currently seeking further clarification on catches of Gummy Shark from
South Australian endorsed fishers
catch has never been sustained for TACs set above 1900 tonnes and catches at this
level have historically driven down catch rates and resulted in reductions in TACs
in following years
hook catches in the fishery have increased and further increases are expected. The
size selectivity and availability of hooks for Gummy Shark remains uncertain.
The model is very sensitive to changes in both of these parameters and currently
presumes an even catch distribution for all age classes of Gummy Shark. A shift
in the selectivity for hooks demonstrating older sharks dominate catch would see
a dramatic decline in the RBC for the fishery. SharkRAG is currently seeking
more data on these parameters and recommends a precautionary approach until
further data is obtained.
SharkRAG recommended a review of the multi-year TACs if:
AFMA Management TAC recommendations for the 2014-15 fishing season
15



standardised CPUE moves outside the 50-percentile range (catch rates impact on
economics and bycatch) in Bass Strait; or
catches fall below 1200 tonnes (providing an indication of reduced recruitment);
or
length frequencies from the line catch change significantly from the model
parameters.
SharkRAG recommended that an overcatch and undercatch limit of 10% apply.
Consistent with the RAG advice, AFMA Management recommends that the TAC be
continued at 1836 tonnes for 2014-15, 2015-16 and 2016-17. AFMA Management also
recommends that the percentage for undercatch and overcatch be determined at 10%.
1.14. Jackass Morwong (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
350t
568t
1
2 years:
624t
598t
568t (1st year of a 0t
two
year
MYTAC)
In 2013, the assessment was updated using actual catches from 2011 and 2012, and
estimated catches for 2013. The 2014 spawning biomass was estimated at:
 40% of the unfished spawning biomass in the east, giving an RBC of 400t
 68% of the unfished spawning biomass in the west, giving an RBC of 292t.
The RAG recommended an RBC of 624 tonnes for each of the next two years, which is
the same as the current TAC after adjustments for overcatch. This is lower than the RBC
of 692 tonnes produced under the 2013 assessment. The RAG adopted this lower
recommendation because the eastern part of the stock is rebuilding. The RAG
recommended a review of the multi-year TAC if:
 the most recent observed value for the standardised CPUE falls outside of the
95% confidence interval of the value for the CPUE predicted by the most recent
Tier 1 stock assessment; or
 the catch exceeds the RBCs in either the east or west.
AFMA Management recommends that, after subtracting State catch and discards from the
RBC and applying the small change limiting rule, the TAC be set at 568 tonnes for 201415 and 2015-16. It also recommends that the percentage for undercatch and overcatch be
determined at 10%.
AFMA Management TAC recommendations for the 2014-15 fishing season
16
1.15. John Dory (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
78t
221t
3
n/a
n/a
221t (3rd year of 0t
a three year
MYTAC)
John Dory is currently in the second year of a three year TAC of 221 tonnes.
ShelfRAG noted that the observed catch rates for John Dory were within the forecast
limits, not triggering this or any other of its breakout rules.
AFMA Management recommends continuing the multi-year TAC of 221 tonnes. It also
recommends that the percentage for undercatch and overcatch be determined at 10%.
1.16. Mirror Dory
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
380t
1616t
4
680t
414t
808t
-808t
The Tier 3 assessment was not accepted by ShelfRAG because of a lack of representative
sampling data. The RAG recommended an RBC of 680t for 2014-15 using the Tier 4
assessment.
ShelfRAG did not recommend a multi-year TAC be applied because of the apparent high
variability of the stock and the lack of a stable assessment.
AFMA Management recommends, after applying the 15% discount factor and the large
change limiting rule, the TAC be set at 808 tonnes. It also recommends that the
percentage for undercatch and overcatch be determined at 10%.
AFMA Management TAC recommendations for the 2014-15 fishing season
17
1.17. Ocean Perch (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
199t
195t
4
3 year:
385t
194t
195t (1st year of a 0t
three
year
MYTAC)
Ocean Perch is assessed as two stocks, inshore and offshore. The inshore stock is
generally regarded as a bycatch species (80% discards) while the offshore stock is
occasionally discarded. Inshore Ocean Perch was defined as those catches from depths of
0 – 200 m. ShelfRAG recommended that the allocation of separate quota be investigated
for the two species.
Ocean Perch are generally not targeted with only 15% of catch taken during targeted
fishing in 2006, and are not key economic drivers of the fishery. Using the single-species
maximum economic yield target of 48% of unfished biomass for Ocean Perch has the
potential to constrain catches of Pink Ling, Mirror Dory and Blue Grenadier. Therefore,
to maximise the economic returns for the SESSF as a whole, SESSFRAG and SEMAC
recommended in 2012 that Ocean Perch be managed as a secondary species with a target
reference point equivalent to 40% of unfished biomass rather than a maximum economic
yield reference point of 48% of unfished biomass.
Consistent with this, the RAG recommended a three year RBC of 385 tonnes using a
target of B40 based on target catch rates during the reference period of:


inshore: 102 tonnes
offshore: 283 tonnes.
ShelfRAG recommended the Tier 4 discount factor of 15% be applied.
AFMA Management recommends, after applying the 15% discount factor and the small
change limiting rule, that the TAC be set at 195 tonnes for the 2014-15, 2015-16 and
2016-17 seasons. It also recommends that the percentage for undercatch and overcatch be
determined at 10%.
1.18. Orange Roughy – General
The Orange Roughy Conservation Programme (ORCP) specifies that only targeted
fishing activities required to support research and to monitor the recovery of Orange
Roughy stocks in the south-east (which under the ORCP includes the western zone) can
be conducted. These research and monitoring activities can only be undertaken within
defined fishing areas such as St Helens Hill and St Patrick’s Head, Maatsuyker and Pedra
Branca. Since the introduction of the ORCP, the TACs for southern, eastern and western
AFMA Management TAC recommendations for the 2014-15 fishing season
18
zone Orange Roughy have been established on the basis of the incidental catch taken as a
result of fishing for other species. Under the ORCP, targeting Orange Roughy is allowed
only on the Cascade Plateau. The ORCP is being reviewed however the review will not
affect the setting of the 2014-15 TACs.
1.19. Orange Roughy – South
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
18t
35t
1
0t
0t
35t
0t
The assessment for the Southern Zone has not been updated since 2000, and calculations
in 2005 recommended an RBC of 0t for this fishery. TACs have been set on levels that
recognise the incidental catch while fishing for other species. Available information
indicates that 35t will cover incidental catch in the southern zone and does not impede
recovery of the stock. SlopeRAG agreed that the 35t TAC should be maintained for the
2014-15 fishing season.
Consistent with the ORCP and SlopeRAG advice, AFMA Management recommends
maintaining the TAC at 35 tonnes for the 2014-15 fishing season, and that no provisions
for undercatch/overcatch be applied.
1.20. Orange Roughy – East
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
3t
25t
1
0t
0t
25t
0t
The last agreed assessment for Eastern Zone Orange Roughy was in 2006. More recently,
assessments have not been agreed because of conflict between ageing estimates in the
model and results of acoustic surveys. The RAG noted that both the assessment and the
acoustic surveys show the biomass is trending up but they differ in the current depletion
level. SlopeRAG recommended a Tier 1 assessment be undertaken in 2014.
The RAG acknowledged that the current TAC of 25t in the eastern zone is adequate to
cover any incidental catch and will not impede the recovery of the stock. SlopeRAG
therefore recommended that the 25t TAC should be maintained for the 2014-15 fishing
season.
Consistent with SlopeRAG advice and the ORCP, AFMA Management recommends
maintaining the TAC at 25t, and that no provisions for undercatch/overcatch be applied
for the 2013/14 fishing season.
AFMA Management TAC recommendations for the 2014-15 fishing season
19
1.21. Orange Roughy – West
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
26t
60t
1
0t
0t
60t
0t
The situation for the western stock is similar to that for the east. Available information
indicates that the current TAC of 60t in the western zone will cover any unavoidable
incidental catch and does not impede the recovery of the stock. Accordingly, SlopeRAG
recommended that the 60t TAC be maintained for the 2014-15 season.
Consistent with SlopeRAG advice and the ORCP, AFMA Management recommends
maintaining the TAC at 60t, and that no provision for undercatch/overcatch be included
for the 2014-15 fishing season.
1.22. Orange Roughy – Cascade Plateau
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
6t
500t
1
n/a
n/a
500t
0t
The stock structure of Orange Roughy in the Australian Fishing Zone is currently
uncertain. However based on existing data, the Cascade Plateau is regarded as a separate
stock for management purposes.
The ORCP requires that the biomass in the Cascade Plateau Zone be kept above 60% of
the unfished biomass. The last formal stock assessment for Orange Roughy on the
Cascade Plateau was in 2009 using revised data to 2005. This assessment estimated the
biomass of Orange Roughy to be at 63% of unfished levels in 2011. SlopeRAG
recommended rolling over the TAC, noting low effort and a lack of new data. The RAG
also recommended 10% undercatch/overcatch be applied for the 2013/14 season.
Consistent with the ORCP and SlopeRAG’s advice, AFMA Management recommends
that the TAC be maintained at 500t. AFMA Management also recommends that the
percentage for undercatch and overcatch be determined at 10%.
AFMA Management TAC recommendations for the 2014-15 fishing season
20
1.23. Orange Roughy – Albany & Esperance
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
0t
50t
1
n/a
n/a
50t
0t
The current arrangements for Orange Roughy from the Albany & Esperance zone include
no commercial targeting of Orange Roughy, an incidental catch trigger of 10t per
deepwater management zone, and closures over recognised Orange Roughy seamounts.
GABRAG recommended maintaining the TAC at 50t to cover incidental catch on the
basis that this posed little risk to the stock.
GABRAG recommended that the Orange Roughy research program in the GAB trawl
sector be continued in 2014-15 and that 200t of research allowance (in addition to the 50t
TAC) be available for this purpose as the level of research catch posed little risk to the
long term recovery of the species.
Consistent with the ORCP and GABRAG advice, AFMA Management recommends
maintaining the TAC at 50t (plus 200t research quota), and that no provisions for
undercatch/overcatch be applied for the 2013-14 fishing season.
1.24. Oreo smooth – Cascade
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
0.5t
150t
4
n/a
n/a
150t,
until 0t
catches reach 10t
SlopeRAG noted that current low effort and catches on the Cascade Plateau meant that
the Tier 4 assessment was not reliable. Therefore the RAG recommended maintaining the
2013-14 TAC of 150 tonnes until catches reach at least 10 tonnes.
Consistent with SlopeRAG’s advice, AFMA Management recommends that the TAC be
set at 150 tonnes and the TAC only be reassessed once the 10 tonne trigger is reached.
AFMA Management also recommends that the percentage for undercatch and overcatch
be determined at 10%.
AFMA Management TAC recommendations for the 2014-15 fishing season
21
1.25. Oreo smooth – other
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
0.7 t
23t
4
n/a
n/a
23t until catches 0t
reach 10t
SlopeRAG noted that deepwater closures have been influential on catches of this species,
with most historical catch coming from areas that are now closed. The RAG noted that,
due to current low catches, the Tier 4 assessment was not reliable.
Consistent with last year’s advice the RAG recommended continuing the TAC of 23
tonnes and recommended not reviewing the assessment until catches exceed 10 tonnes.
AFMA Management recommends that the TAC be set at 23 tonnes and the TAC only be
reassessed once the 10 tonne trigger is reached. AFMA Management also recommends
that the percentage for undercatch and overcatch be determined at 10%.
1.26. Oreo basket (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
104t
132t
4
128t
128t
132t (1st year of a 0t
three
year
MYTAC)
The Oreo basket consists of Spikey Oreo, Warty Oreo, Black Oreo and Rough Oreo.
SlopeRAG noted recent data includes the use of a general name Oreo Dory.
The Tier 4 analysis uses data from areas currently open to fishing. Catch rates have been
relatively stable since 2006. The Tier 4 analysis gave an RBC of 128 tonnes, which was
accepted and recommended by SlopeRAG for one or three years. The RAG also
recommended that, as in previous years, the precautionary 15% discount factor for Tier 4
assessments not be applied due to deepwater closures providing a greater level of
precaution.
Consistent with SlopeRAG advice AFMA Management recommends that, after the
application of the small change limiting rule, the TAC be set at 132 tonnes for the 201415, 2015-16 and 2016-17 seasons. AFMA Management also recommends that the
percentage for undercatch and overcatch be determined at 10%.
AFMA Management TAC recommendations for the 2014-15 fishing season
22
1.27. Pink Ling (MYTAC)
2012/13
Catch
2013/14
TAC
Tier 2014/15 RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change
TAC
from
recommendation 2013/14
991t
834t
(combined
east/west)
1
East:
East:
East: 349t
-one year 122t
(noting
catch/recovery
times in the
table below).
-three year
349t (using
400t catch
from
the
table below)
West: 647t
West:
West:
-one year 807t
-three
661t
-three year 661t
+162t
(1st year of a three
year MYTAC)
year
In 2013, the RAG agreed on an updated stock assessment model for Pink Ling that
produced biomass estimates of:
o west: 58% of unfished spawning biomass, giving a:
 one year RBC of 807 tonnes
 three year RBC of 661 tonnes
o east: 26% of unfished spawning biomass, giving a one year RBC of 122
tonnes and catch and rebuilding estimates of:
Annual
catch (t)
B2015/B0
B2020/B0)
P(B2015>
B2013)
P(B2020>
B2013)
P(B2015<
0.2)
P(B2020<
0.2)
Rebuild
year
to
B48
0
0.33
0.56
1.00
1.00
0.01
0.00
2019
250
0.30
0.44
0.98
0.99
0.04
0.00
2022
300
0.30
0.42
0.96
0.99
0.05
0.01
2024
350
0.29
0.39
0.93
0.97
0.07
0.02
2026
400
0.28
0.37
0.88
0.93
0.09
0.04
2029
450
0.28
0.35
0.82
0.90
0.11
0.07
2034
500
0.27
0.32
0.75
0.82
0.14
0.11
2047
AFMA Management TAC recommendations for the 2014-15 fishing season
23
Where:





B2015 means the biomass estimate in 2015.
B0 means unfished biomass.
P means probability.
0.2 means 20% of unfished biomass, the limit reference point.
Rebuild year means at least a 50% probability of being at or above the target reference
point of 48% of the unfished biomass.
In 2014-15, AFMA is seeking to manage the eastern and western zones separately. For
this reason, AFMA Management recommends for the 2014-15, 2015-16 and 2016-17
fishing seasons:


an eastern zone TAC of 349 tonnes.1 This allows for incidental catch of Pink Ling
to be landed instead of discarded, while having a less than 10% chance of
breaching the limit reference point in 2015 or 2020. This allows for rebuilding to
the target reference point in less than a generation plus 10 years, an example
rebuilding time provided in the Commonwealth Fisheries Harvest Strategy Policy.
a western zone TAC of 647 tonnes.
If it is not possible to manage Pink Ling with separate east and west quota, AFMA
Management recommends a combined east and west TAC of 996 tonnes for 2014-15,
with alternative controls to restrict catches in the east to below 349 tonnes.
AFMA Management also recommends that the percentage for undercatch and overcatch
be determined at 10%.
1.28. Redfish
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
67t
276t
3
0t (using 0t
Tier 4)
AFMA 2014/15 Change from
TAC
2013/14
recommendation
138t
-138t
Similarly to last year, in 2013 ShelfRAG considered a:

1
Tier 3 assessment, which reflects an age and size structure indicative of a healthy
stock. This assessment suggests that fishing has not had a significant impact on
the stock with older fish in the population and evidence of new recruitment.
Based on an annual constant catch of 400 tonnes in the east less State catch and discards.
AFMA Management TAC recommendations for the 2014-15 fishing season
24

Tier 4 assessment, which suggested that catch rates have been decreasing, and that
the stock is currently below the limit reference point.
The RAG expressed concern that for a number of years, catches and the CPUE for
Redfish have been declining, and that this change had not been reflected in the Tier 3
assessment. The RAG noted that catches had been declining since 1998, and CPUE had
declined over a long period of time to a historically low level in 2012.
The RAG noted that natural refuges may mean significant numbers of fish are not
available to trawl effort which might explain the difference between assessments.
Further, industry members of the RAG had previously noted that Redfish is subject to
variable availability.
Given the long term declines in catch and CPUE, the RAG noted that it was becoming
increasingly important that a Tier 1 assessment be completed.
ShelfRAG took a precautionary approach and recommended the Tier 4 RBC of 0 tonnes
for the 2014-15 season, noting that the large change limiting rule would give a TAC of
138 tonnes. This TAC is above landed catches since the 2011-12 season so would be
unlikely to lead to increased discarding.
Consistent with ShelfRAG advice AFMA Management recommends a TAC for Redfish
of 138 tonnes. It also recommends that the percentage for undercatch and overcatch be
determined at 10%.
1.29. Ribaldo (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
114t
168t
4
355t
355t
2014-15 252t
2015-16 355t
+84t (in year
1)
2016-17 355t
Ribaldo has been assessed as a Tier 4 species since 2008. In 2013 the assessment was
updated with the latest catch and effort data. SlopeRAG noted that trawl catch rates had
been relatively stable from 2000 and auto-longline catch rates had been stable since 2005.
Ribaldo are generally not targeted and are not key economic drivers of the fishery, with
less than a quarter of Ribaldo catch being taken in targeted shots. Further, using the
single-species maximum economic yield target of 48% of unfished biomass for Ribaldo
has the potential to constrain catches of Deepwater Shark, Blue Grenadier, Pink Ling and
oreos. Therefore, to maximise the economic returns for the SESSF as a whole,
SESSFRAG and SEMAC recommended in 2012 that Ribaldo be managed as a secondary
AFMA Management TAC recommendations for the 2014-15 fishing season
25
species with a target reference point equivalent to 40% of unfished biomass rather than a
maximum economic yield reference point of 48% of unfished biomass. Consistent with
this reference point, SlopeRAG recommended a:


one year RBC of 355 tonnes; or
a three year RBC of 355 tonnes with a review if one or more of the following
occur:
o 70% or more of the TAC is caught
o the trawl CPUE changes by 50% or more
o there is a significant change in the proportion of catch by the line sector.
The RAG recommended that a discount factor not apply because of the existing large
closures for both trawl and auto-longline methods. Also, the review triggers were
sufficient to trigger a review of the discount factor at the same time as the RBC.
AFMA Management recommends a three year multi-year TAC, after applying the large
change limiting rule, of 252 tonnes for 2014-15, 355 tonnes in 2015-16 and 2016-17.
Consistent with the advice from SlopeRAG, AFMA Management recommends not
applying the 15% discount factor because of the existing large closures for trawl and line
methods applying in the area where Ribaldo occurs. It also recommends that the
percentage for undercatch and overcatch be determined at 10%.
1.30. Royal Red Prawn (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
184t
303t
4
3 year:
393t
382t
382t (1st year of a +79t
three
year
MYTAC)
The RAG recommended an RBC of 393t for a three year multi-year RBC, noting there
has been a stable catch trend over at least the last 10 years. The RAG proposed the multiyear TAC be reviewed where there was a more than 50% change in standardised CPUE.
As in previous years, ShelfRAG recommended not applying the default 15% Tier 4
discount factor due to external constraints on the fishery (i.e. processor implemented
catch restrictions). This market limit on catches provides additional precaution for the
species.
The RAG recommended Research Catch Allowance for the Gulper Exclusion Project to
offset costs of research trips and experimenting with new gear. This will be advised by
the Principal Investigators.
AFMA Management TAC recommendations for the 2014-15 fishing season
26
Consistent with ShelfRAG advice AFMA Management recommends, after subtracting
state catch and discards from the RBC, that the TAC be set at 382 tonnes for the 2014-15,
2015-16 and 2016-17 seasons (with Research Catch Allowance to be deducted from this
amount). It also recommends that the percentage for undercatch and overcatch be
determined at 10%.
1.31. Saw Shark
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
188t
339t
4
459t
459t
459t
+120t
In 2013, SharkRAG considered updated Tier 4 assessments using both gillnet and trawl
catch rates. SharkRAG considered that the trawl catch rates provided a better index of the
stock because gillnetters actively avoided the species. The RBC has been developed
based on trawl data.
A multi-year TAC was not recommended because it would be preferable to incorporate
discards into the assessment when estimates of discards are more certain.
SharkRAG recommended an RBC for 2014-15 of 459 tonnes. It also recommended an
overcatch and undercatch of 10% be applied. The RAG recommended not using a
discount factor because of significant area closures, particularly in South Australia, as
they provide additional precaution for the stock.
Consistent with the advice of SharkRAG, AFMA Management recommends that a TAC
for the 2014-15 season be set at 459 tonnes. It also recommends that the percentage for
undercatch and overcatch be determined at 10% and no discount factor be applied.
1.32. School Shark (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
111t
215t
1
0t
0t
215t (1st year of a 0t
three
year
MYTAC)
The most recent stock assessment for School Shark, completed in 2009, resulted in a
biomass estimate below the limit reference point. This means that there can be no
targeted fishing for School Shark and the RBC is 0 tonnes. However, in 2012 a School
Shark Workshop found that the 2009 assessment could not be relied upon for estimates of
AFMA Management TAC recommendations for the 2014-15 fishing season
27
stock status, primarily because the index of abundance for School Shark was not reliable.
Work is now being undertaken to develop a reliable index of abundance.
SharkRAG recommended an incidental catch TAC of 215 tonnes for three years until the
School Shark alternative index of abundance has been further progressed. In forming its
best estimate of incidental catch at 215 tonnes, SharkRAG noted:



the recorded catch in catch disposal records in the SESSF 2012 – 13 season of
111 tonnes
the discards recorded by SESSF operators in logbooks in the 2012-13 season of
28 tonnes and the RAG view that there were significant unreported discards
the estimated state catch of 29 tonnes.
The RAG noted reducing the TAC below this level would be unlikely to reduce total
mortality and may lead to unreported catch and further discards.
While the 2009 assessment is not relied on by SharkRAG for current stock status, it does
provide an indication of rebuilding timeframes at different levels of catch. With an
incidental bycatch of 215 tonnes, the stock would be expected to recover to above the
limit reference point (20% of unfished biomass) within 66 years (or less than three
generations). This will allow the stock to continue to recover while work on establishing
a reliable index of abundance continues.
AFMA Management continues to apply the 20% rule to minimise targeting of School
Shark and considers this an important component of the recovery of this species.
The RAG recommended indicators to review the incidental TAC if:
 reported Commonwealth catch and ISMP discards reach 215 tonnes or fall below
120 tonnes; or
 a School Shark alternative index becomes available.
Consistent with SharkRAG advice, AFMA Management recommends an incidental catch
TAC for School Shark be set at 215 tonnes for the 2014-15, 2015-16 and 2016-17
seasons with no overcatch and undercatch provision.
1.33. School Whiting
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
479t
809t
1
1660t
812t
809t
0t
School Whiting is managed under a rolling, long-term RBC of 1660t, and is monitored
each year against indicators for any significant risks to the stock. ShelfRAG set a longAFMA Management TAC recommendations for the 2014-15 fishing season
28
term RBC because the spawning biomass of School Whiting is particularly sensitive to
recruitment variation and can vary significantly year-to-year.
The RAG noted there was increasing catch of whiting by State trawlers working in waters
off New South Wales. This State catch now represents a significant proportion of the
total catch of School Whiting. From 1986 – 1996 the State catch averaged around 30% of
total catch, but from 1997-2007 the State catch has increased and averaged around 60%
of the total catch.
The RAG also noted that the last formal Tier 1 assessment for School Whiting was
completed four years ago, and noted that the development of the spatially explicit model
would require at least two years before it could be used as a Tier 1 assessment.
Consistent with ShelfRAG advice AFMA Management recommends, after subtracting
state catches and discards from the RBC and applying the small change limiting rule, that
the TAC be set at 809 tonnes. It also recommends that the percentage for undercatch and
overcatch be determined at 10%.
1.34. Silver Trevally (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
115t
781t
4
3 year:
791t
615t
615t (1st year of a -166t
three
year
MYTAC)
In considering the Tier 4 assessment, the RAG noted that the Batemans Bay Marine Park,
which had previously been a significant catch area, is now closed to fishing. For this
reason, the agreed assessment only uses catch rates from outside the closure.
The RAG recommended:
-
a one year RBC of 858 tonnes under the HSF Tier 4 decision rule (based on the
green line in the table below); or
a three year RBC of 791 tonnes, based on catch rates during the reference period
(based on the blue line in the table below).
AFMA Management TAC recommendations for the 2014-15 fishing season
29
The RAG recommended that the multi-year TAC be reviewed if one or more of the
following apply:

if the total catch in a season exceeds 500 tonnes; or

if there were significant changes to CPUE (the RAG could not objectively
identify an appropriate percentage change at this stage, but agreed to monitor
CPUE data to assess any potential risk to the stock).
The RAG noted that the proposed SESSF Monitoring and Assessment Research Project
would provide further guidance for setting multi-year TACs for Tier 4 species.
As for previous years, the RAG recommended that the 15% Tier 4 discount factor not
apply because significant closed areas reduced the portion of stock available to fishing at
any time.
Consistent with ShelfRAG advice, AFMA Management recommends setting the TAC,
after deducting discards and state catches, at 615 tonnes for each of the next three years.
It also recommends that the percentage for undercatch and overcatch be determined at
10%.
1.35. Silver Warehou (MYTAC)
2012/13
Catch
2013/14
TAC
Tier
2014/15
RBC
2014/15
C’wealth
RBC
AFMA 2014/15 Change from
TAC
2013/14
recommendation
722t
2329t
1
n/a
n/a
2329t (2nd year of 0t
a three year
MYTAC)
In 2013-14, Silver Warehou was on the first year of a three year multi-year TAC with a
review to occur if one or more of the following breakout rules applies:
AFMA Management TAC recommendations for the 2014-15 fishing season
30

if the most recent observed value for the standardised CPUE falls outside of the
95% confidence interval of the value for the CPUE predicted by the most recent
Tier 1 stock assessment

if discards exceed 20% of the TAC

if age composition of the Silver Warehou stock is significantly different from that
predicted by the model

if the proportion of the TAC caught differs by more than 20% from the average
over the last three years.
During 2012, the first break out rule was triggered with catch rates falling outside
predicted levels. In response a new Tier 1 assessment was completed with no significant
changes to the stock identified.
The first break out rule was again triggered in 2013. The RAG recommended not redoing
a Tier 1 stock assessment because it appeared there were inconsistencies in the
assessment model interpreting different data rather than concerns with the stock. The
RAG recommended that the multi-year TAC continue but that it would be beneficial to
review the assessment when resources were available to do so.
Consistent with SlopeRAG’s advice, AFMA Management recommends maintaining the
three year multi-year TAC of 2329 tonnes. It also recommends that the percentage for
undercatch and overcatch be determined at 10%.
Non quota species
Section 15 of the Southern and Eastern Scalefish and Shark Management Plan 2003
provides that AFMA may determine a TAC for non-quota species.
Boarfish and Orange Roughy within the East Coast Deepwater Trawl (ECDWT) Sector
are the only species for which non-quota TACs are currently set. The non-quota TACs
for these two species act as a trigger limit with the main management strategy being to
limit targeting of Boarfish and Orange Roughy in this sector. If catches exceed the nonquota species TACs for the season the fishery (sector) will be closed.
Due to low fishing effort producing no catches of Boarfish and Orange Roughy in the
ECDWT Sector, SlopeRAG recommended the trigger limits for these species continue at
their present level of Boarfish 200 tonnes and Orange Roughy 50 tonnes.
Consistent with the RAG advice AFMA Management recommends the TACs for
ECDWT Boarfish and Orange Roughy be maintained at previous amounts as per the
table below.
AFMA Management TAC recommendations for the 2014-15 fishing season
31
Non-quota species
Total Allowable Catch
Whole weight
Boarfish
200 tonnes
(trigger limit)
Orange Roughy
50 tonnes
Whole
weight
(incidental catch)
AFMA Management TAC recommendations for the 2014-15 fishing season
32
Summary Table of AFMA Recommendations for quota species
Species
Alfonsino
2012/13
Catch
(t)
2013/14
TAC (t)
Tier
89t
1125t
3
2014/15
RBC (t)
1 year: 1070t
2014/15
C’wealth
RBC (t)
AFMA 2014/15
TAC
recommendation
(t)
1017t
1017t (1st year of -108t
a
three
year
MYTAC)
3 year: 1070t
Change
from
2013/14
(t)
Blue eye
Trevalla
332t
388t
4
269t
229t
229t
Blue
Grenadier
3718t
5208t
1
1 year: 8065t
8810t (3
year)
7812t (1st year +2604t
after large change
rule) 8810t (2nd
and 3rd year)
3 year: 8810t
5 year: 8677t
-119t
Blue
Warehou
48t
118t
4
0t
0t
118t
Bight
Redfish
267t
2358t
1
na
na
2358t (3rd year of 0t
three
year
MYTAC)
Deepwater
Flathead
948t
1150t
1
2014/15:
1146t
2014/15:
1146t
2015/16:
1122t
2015/16:
1150t (1st year of 0t
three
year
MYTAC)
2016/17:
1112t
0t
1122t
2016/17:
1112t
Deepwater 27t
Shark
Basket East
85t
Deepwater 64t
Shark
Basket –
West
215t
4
1 year: 78t
3 year: 47t
4
1 year: 300t
3 year: 263t
3 year:
47t
47t (1st year of a -38t
three
year
MYTAC)
3 year:
263t
263t (1st year of a +48t
three
year
MYTAC)
Longterm:124t
AFMA Management TAC recommendations for the 2014-15 fishing season
33
Species
2012/13
Catch
(t)
2013/14
TAC (t)
Tier
Elephant
Fish
72t
109t
4
Flathead
(tiger)
2701t
2750t
1
2014/15
2014/15
C’wealth
RBC (t)
AFMA 2014/15
TAC
recommendation
(t)
Change
from
2013/14
(t)
116t
116t
109t
0t
1 year: 3428t
2878t
2878t (1st year of +128t
a
three
year
MYTAC)
RBC (t)
3 year: 3334t
5 year: 3252t
Gemfish - 63t
east
100t
1
0t
0t
100t
Gemfish - 54t
west
199t
1
3 year: 247t
183t
199t (1st year of a 0t
three
year
MYTAC)
Gummy
Shark
1373t
1836t
1
3 year: 2010t
1918t
1836t (1st year of 0t
a
three
year
MYTAC)
Jackass
Morwong
350t
568t
1
2 year: 642t
598t
568t
John Dory
78t
221t
3
na
na
221t (3rd year of a 0t
three
year
MYTAC)
Mirror
Dory
380t
1616t
4
680t
414t
808t
Ocean
Perch
199t
195t
4
3 year: 385t
194t
195t (1st year of a 0t
three
year
MYTAC)
Orange
Roughy
southern
18t
35t
1
0t
0t
35t
0t
Orange
Roughyeastern
3t
25t
1
0t
0t
25t
0t
AFMA Management TAC recommendations for the 2014-15 fishing season
34
0t
0t
-808t
Species
2012/13
Catch
(t)
2013/14
TAC (t)
Tier
Orange
Roughy
western
26t
60t
1
Orange
Roughy
Cascade
6t
500t
Orange
0t
Roughy
Albany &
Esperance
Oreo,
Smooth –
Cascade
Oreo,
Smooth
Other
2014/15
2014/15
C’wealth
RBC (t)
AFMA 2014/15
TAC
recommendation
(t)
Change
from
2013/14
(t)
0t
0t
60t
0t
1
na
na
500t
0t
50t
1
na
na
50t
0t
0.5t
150t
4
na
na
150t
(until 0t
catches reach 10t)
0.7t
23t
4
na
na
23t (until catches
reach 10t)
0t
Oreo,
Basket
104t
132t
4
128t
128t
132t
0t
Pink ling
991t
834t
(combined
east/west)
1
East: one year
1222t (noting
catch/recovery
times in the
table below)
East:
three
year 349t
(using
400t
catch
from
table pp.
20)
East: 349t
+162t
RBC (t)
-
West:
-one year 807t
-three
661t
year
West: 647t
West:
-three
year 661t
Redfish
67t
276t
3
0t (using Tier
4)
0t
138t
AFMA Management TAC recommendations for the 2014-15 fishing season
35
-138t
Species
Ribaldo
2012/13
Catch
(t)
2013/14
TAC (t)
Tier
114t
168t
4
2014/15
RBC (t)
355t
2014/15
C’wealth
RBC (t)
AFMA 2014/15
TAC
recommendation
(t)
Change
from
2013/14
(t)
355t
2014-15: 252t
+84t
2015-16: 355t
2016-17:
355t
Royal Red
Prawn
184t
303t
4
393t
382t
382t
+79t
Saw Shark
188t
339t
4
459t
459t
459t
+120t
School
Shark
111t
215t
1
0t
0t
215t
0t
School
Whiting
479t
809t
1
1660t
812t
809t
0t
Silver
Trevally
115t
781t
4
791t
615t
615t (1st year of -166t
three
year
MYTAC)
Silver
Warehou
722t
2329t
1
na
na
2329t (2nd year of 0t
a
three
year
MYTAC)
AFMA Management TAC recommendations for the 2014-15 fishing season
36