Recommendations for total
allowable catches for SESSF
species for the 2013/14 fishing
year
Recommendations for total allowable catches for SESSF species
for the 2013/2014 fishing year
This paper provides recommendations for total allowable catches (TACs) for the
species in the Southern and Eastern Scalefish and Shark Fishery (SESSF) for
the 2013/14 fishing year. The TAC recommendations reflect AFMA
Management’s analysis of resource assessment group outcomes, stock
assessment results, harvest strategy control rules, various TAC setting
principles, rebuilding and other management strategies. The 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.
The annual South East Management Advisory Committee (SEMAC) TAC
meeting will be held on 30-31 January 2013 where recommended TACs for all
species, except the Great Australian Bight Trawl Sector (GABTS) species, will be
considered. The AFMA Commission will then consider and determine final TACs
for SESSF quota species on 25-26 February 2013 based on the
recommendations from AFMA Management, SEMAC and the individual SESSF
resource assessment groups (RAGs). The TACs will only be final once the
Commission has made its decision.
The Great Australian Bight Industry Association will assess the changes to catch
rates of GABTS species, similar to the CPUE multiplier rule for other SESSF
species. This harvest control rule will allow recommended TACs for GABTS
species to be increased by 10% if catch rates are improved by 20% in more
recently available data. Any announcements of all SESSF TACs will only be
made after this process has been completed.
This paper has been distributed in order to provide stakeholders with an
opportunity to consider AFMA Management’s TAC recommendations prior to the
SEMAC TAC meeting, and to provide an opportunity for individuals to discuss
any specific issues or concerns with a member of SEMAC who will attend the
January 2013 TAC meeting. Please note that SEMAC will not be discussing
Bight Redfish and Deepwater Flathead.
This paper is not intended to be read as a stand-alone paper as it does not
provide an exhaustive analysis of the assessment results or the SESSF Harvest
Strategy Framework (HSF) decision rules. It should be read in conjunction with
the HSF, individual species assessment reports and/or the species summaries
prepared by the SESSF RAGs, which can be found on the AFMA website at
http://www.afma.gov.au/managing-our-fisheries/fisheries-a-to-z-index/southernand-eastern-scalefish-and-shark-fishery/publications-and-forms/
The commentary against each species is a summary of some of the issues
considered by AFMA Management in making its TAC recommendations.
2
AFMA Management TAC recommendations for the 2013-2014 fishing year
A description of the assessment and recommended TAC(s) for each quota
species in the SESSF is provided below in alphabetical order. A summary table
is also given on page 33.
SESSF Harvest Strategy Framework, Stock Assessment
Methods and TAC Setting Process in 2012
The SESSF HSF was developed during 2005, and has been used as a basis for
providing advice on TACs in the SESSF quota management system since 2006.
The HSF uses harvest control rules1 to determine a recommended biological
catch (RBC) for each stock in the SESSF quota management system.
Harvest Control Rules
Under the HSF, stocks are assigned to one of three tier levels depending on the
basis used for assessing the status or exploitation level for that stock. Tier 1
stocks have a well-established and agreed quantitative stock assessment. The
assessment for Tier 3 stocks is based on estimates of fishing mortality, while Tier
4 is based on catch per unit effort (CPUE). The Tier 2 level is no longer used as it
is a less robust quantitative assessment.
- For each stock, the Commonwealth RBCs (recommended biological catch
from Commonwealth waters) are derived from the total RBCs
(recommended biological catch for the stock) using the principles outlined
below.
- An average of the last four years (2008-11) discarded catch and catch
taken by other sectors or jurisdictions (e.g. state and recreational sectors)
are subtracted from the RBC.
- A discount factor2 is applied to RBCs derived for Tier 3 and Tier 4 species
as a precautionary measure 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.
1
The harvest control rules include a limit reference point and a target reference point. If the current spawning biomass for a species is
below the limit of 20% of the unfished spawning biomass, the RBC is 0 and no further targeting is allowed In this case there may be a
TAC set on the basis of unavoidable incidental catch. If the current estimated biomass, or proxy, for a species is below the target
(generally 48% of the unfished spawning biomass unless otherwise determined) the RBCs are set at an appropriate level to allow the
stock to rebuild to the target. If the current spawning biomass is above the target, the RBCs may be set at a level to allow a fish down
of the stock to the target.
2
The discount factor control rule was introduced in 2009 and during 2011 SESSFRAG developed criteria to guide the application of
this harvest control rule. The discount factor will be applied unless certain criteria are met. These include:

when equivalent or additional precaution is provided by other measures, such as but not limited to spatial closures or
markets limiting catch

long term stability in CPUE exists around current catch levels:
o
RAGs will need to demonstrate long term stability of CPUE, with reference to CVs ≤ 0.2, over an appropriate
period based on the life history of the species
o
RAGs need to consider the possibility that the observed stability may be due to other factors i.e. hyperstability.
These criteria were further reviewed in 2012 and a management strategy evaluation analysis was completed. The final report of this
assessment is expected in 2013.
3
AFMA Management TAC recommendations for the 2013-2014 fishing year
The Commonwealth TACs are derived from the Commonwealth RBCs using the
principles as outlined below.
- TACs are prevented from changing by small (less than 10% or 50t,
whichever is the lesser) or excessive (no more than 50%) amounts from
year to year, under the Small and Large Change Limiting rules.
-
To take account of the most up-to-date catch information in setting the
TACs, CPUE trends for the latest year (in this case 2012) are used to
adjust the TACs where possible.
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 – Eastern Gemfish,
School Shark and Blue Warehou – are classified as overfished and subject to
overfishing. They are subject to rebuilding strategies and incidental catch TACs.
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 has been approved by the AFMA Commission in
limited circumstances to reduce stock assessment costs and provide more
certainty around fluctuating TACs.
When a multi-year TAC is set, the AFMA Commission require rules (break out
rules) be developed that trigger a re-assessment if substantial changes occur in
the fishery.
Breakout rules were developed for all species that were, or recommended to be,
under multi-year TACs (individual species breakout rules are listed in this
document). The RAGs suggested they continue to define and improve these
rules over time.
This year Silver Warehou broke out due to the observed CPUE index being lower
than the 95% error bounds of predicted CPUE. Because of this SlopeRAG
decided to conduct a new Tier 1 assessment. There is existing multi-year TACs
for Blue Grenadier, Bight Redfish and John Dory.
Research Catch/Effort Allowance Policy
The AFMA Commission may also allocate research quota once approved
research projects to be undertaken in the upcoming fishing year. The amount of
research quota is determined in accordance with the AFMA Research Catch and
Effort Allowance Policy and is allocated within the recommended sustainable
catch of that species, which can either be included within or in addition to the
TACs. Changes in amounts of research catch between fishing years can possibly
cause variations in multi-year TACs.
4
AFMA Management TAC recommendations for the 2013-2014 fishing year
AFMA is currently preparing a proposal to amend this policy to allow for
retrospective decrementing of research quota for catches taken while conducting
Fishery Independent Surveys. This aims to promote the integrity of the Fishery
Independent Survey by ensuring that species are not targeted or avoided simply
because of quota availability. If this proposal is agreed by the AFMA Commission
and implemented prior to 2013/14 fishing year research catch allowances
recommended in this document may be revised to allow for research catch during
the Fishery Independent Survey to be accounted for retrospectively.
Overcatch and Undercatch
Overcatch and undercatch provisions are also applied to most species to allow
operators to catch up to 10% more (or 10% less) than the quota allocated to their
quota statutory fishing right for a particular species in a fishing year. 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.
Maximum Sustainable Yield (MSY)/Maximum Economic Yield
(MEY) Target Reference Point
TACs for SESSF species currently reflect the target level for maximum economic
yield (MEY) for that individual species which is 48% of the unfished spawning
biomass unless otherwise determined. However, the Commonwealth Fisheries
Harvest Strategy Policy includes as an objective the maximisation of economic
yield across the fishery as a whole. SESSFRAG has proposed that, instead of
setting each individual species’ TAC based on MEY, this objective would be
better pursued by setting TACs for key economic species at a target reflecting
MEY, and the remaining species’ TACs set at the biological target of maximum
sustainable yield (MSY).
The main reason for this proposal is that in a multi-species fishery like the
SESSF some species are targeted as commercial drivers while other quota
species are a secondary catch. As it is almost impossible to fish all species to
MEY, the MEY target reference points for secondary species may act to prevent
maximising the economic yield for the fishery as a whole by restricting catches of
key economic species.
To identify which species were key economic drivers and which were secondary
species, SESSFRAG recommended using gross value production and estimates
of targeting intensity. The species that were identified as secondary species are
noted in the summaries below. SESSFRAG recommended setting the target
reference point for the secondary species at MSY because it would provide for
biologically sustainable catches but would not unduly restrict the ability to
achieve MEY for key target species.
5
AFMA Management TAC recommendations for the 2013-2014 fishing year
AFMA is currently developing a project proposal to test the use of the target
reference point of MSY, rather than MEY, for secondary species in the SESSF.
AFMA will continue to recommend the default target reference point of B 48 until
this project is finalised.
In the longer term AFMA considers it would be appropriate to develop a bioeconomic model for the SESSF to help achieve the objective of MEY across the
fishery as a whole.
6
AFMA Management TAC recommendations for the 2013-2014 fishing year
Individual species summaries
1.1. Alfonsino
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
201t
3
1196t
1133t
750t
1125t
+375t
Alfonsino has been targeted in a relatively small area of the East Coast
Deepwater Zone (ECDWZ) south-east of Lord Howe Island where the seabed
rises to depths of less than 1000m. It is not known whether this stock is localised
to just this area, or occurs in other areas of the ECDWZ or in other parts of the
SESSF. SlopeRAG considered that some of the stock in the ECDWZ probably
comes from outside the AFZ. The RAG received data from New Zealand during
2012 but there was insufficient information to use in a Tier 3 assessment. This
assessment will need to be moved to a Tier 1 or Tier 4 assessment to effectively
use this data.
The data collected from Australian boats to date has provided good ageing data
and the Tier 3 was updated with additional age data. The age composition
continues to show a wide variety of age classes and the impact of fishing on the
age structure is undetectable. Therefore the RAG accepted the RBC of 1196t
and recommended the 5% discount factor be applied.
During 2012 the Food and Agriculture Organisation of the United Nations held a
workshop on the assessment and management of Alfonsino. This included
regional management issues, adequacy of reporting of data and discussion on
the species biological parameters. AFMA will follow up any results from this
during 2013.
Consistent with SlopeRAG advice and using the large change limiting rule, AFMA
Management recommends a TAC at 1125t. AFMA Management also
recommends setting overcatch and undercatch provisions at 10% for the 2013/14
fishing season.
1.2. Blue-eye Trevalla
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
355t
4
NA
NA
388t
388t
0t
A single stock is assumed for Blue-eye Trevalla across the SESSF based on the
best available science. In recent years the fishery has seen increased targeting
of this species on seamounts off the east coast of Australia. The landed catch for
2011/12 was 355t which represented 98% of the actual TAC.
7
AFMA Management TAC recommendations for the 2013-2014 fishing year
In making recommendations for 2013/14, SlopeRAG considered the Tier 4
assessment for Blue-eye Trevalla but concluded that it no longer had confidence
in the Tier 4 assessment as a basis for advice on the RBC. Catch rates appeared
to rise slightly compared to 2010 which was the lowest in the time series, with the
Tier 4 assessment indicating the need for a drop in RBC to 288t.
The RAG did not believe the assessment fully accounted for the effects of
closures, killer whales and the increased effort on the seamounts. There were
also uncertainties raised over the proportion of the stock that was vulnerable to
the fishing gear and that this was likely to be variable in space and time.
Accordingly, the RAG recommended maintaining the current TAC of 388t while
work was undertaken to resolve these uncertainties.
Current catch levels were not considered to pose a significant risk to the long
term viability of the stock of Blue eye Trevalla, particularly given that effort was
dispersed over a wide area. Further, size and age composition data, although
variable, show no trend indicative of an increased impact from fishing.
In accordance with its Research Catch and Effort Allowance Policy, AFMA is
recommending that 1t be allocated as part of the TAC for research. It is predicted
this amount will be caught during the SESSF Fishery Independent Survey.
Consistent with the RAG’s advice, AFMA Management recommends that the
TAC be set at 388t (including 1t research quota). It also recommends that
overcatch and undercatch provisions be set at 10% for the 2013/14 fishing
season, the same as last year.
1.3. Blue Grenadier
2011/12
Catch
2012/13
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change
RBC
TAC rec
from
2012/13
4081t
5208t
1
NA
NA
5208t
0t
The Tier 1 assessment for Blue Grenadier was conducted in 2011 and the
species was placed on a 2 year multi-year TAC, based on the Tier 1 assessment.
During 2011, SlopeRAG developed breakout rules for the Blue Grenadier multiyear TAC which include:

if the most recent observed value for the standardised non-spawning
CPUE falls outside of the 95% confidence interval of the value for the
standardised non-spawning CPUE predicted by the most recent Tier 1
stock assessment; or

if 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
8
AFMA Management TAC recommendations for the 2013-2014 fishing year

if less than 70% of the TAC was caught; or

if the observed age composition is significantly different to that
projected.
In 2012, the RAG reviewed data and observations from the fishery and
determined the fishery had not breached the break out rules. The RAG
concluded that continuing the multi-year TAC for the remaining one year was not
a risk to the stock and recommended that the TAC be maintained at the current
level.
AFMA Management recommends continuing with the second year of the two
year multi-year TAC for Blue Grenadier of 5208t. AFMA Management also
recommends overcatch and undercatch provisions be maintained at 10% for the
2013/14 fishing season as recommended by SlopeRAG.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
Management recommends a research catch allowance, within the TAC, of 10t be
allocated for the Fishery Independent Survey. Further an additional 200t be
allocated for continuation of acoustic surveys (subject to submission and
acceptance of a research proposal).
1.4. Blue Warehou
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
97t
4
0t
0t
118t
118t
0t
The Tier 4 assessment showed that the standardised catch rates remain below
the limit reference points for both the east and west stocks, resulting in RBCs of
0t for the east and west.
ShelfRAG noted that Blue Warehou has been placed on the priority assessment
list under the Environment Protection and Biodiversity Conservation Act 1999
(EPBC Act) for decision by 30 September 2014 with public comments to be
submitted by 30 November 2012. AFMA has sought and considered RAG advice
and has provided a submissions to the Department of Sustainability,
Environment, Water, Population and Communities.
Analysis of catch data by CSIRO indicates that targeting3 in 2011 was extremely
low in the west, and zero in the east. The RAG agreed that reducing the TAC
further would increase the risk of discarding and was unlikely to result in a
reduced catch or fishing mortality. The RAG agreed the best approach would be
to contact operators and quota owners individually to encourage them to cease
any remaining targeting. The RAG noted that in early 2012 the South East Trawl
3
Target species were assumed to be the species that forms the greatest proportion of the total catch from a
group of fishing operations of a certain gear type in the same small area, depth and time period.
9
AFMA Management TAC recommendations for the 2013-2014 fishing year
Fishing Industry Association, with support from AFMA, developed a code of
practice and an education and awareness program to further reduce targeting by
trawl operators.
The RAG recommended rolling over the TAC 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.
In accordance with its Research Catch and Effort Allowance Policy, AFMA is
recommending that 2t, in addition to the TAC, be allocated for research. It is
predicted this amount will be caught during the SESSF Fishery Independent
Survey.
Consistent with the advice of ShelfRAG, AFMA Management recommends that
the TAC be set at 118t (plus 2t research quota), and that no
overcatch/undercatch provisions be set for the 2013/14 fishing season.
1.5. Bight Redfish
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
352t
1
NA
NA
2334t
2334t
0t
Bight Redfish is assessed as a Tier 1 stock and 2012/13 is the first year of a 3
year multi-year TAC of 2334t. The Tier 1 assessment uses the MEY target value
of 41% of the unfished spawning biomass in the base case.
Breakout rules for Bight Redfish were developed in 2011 in conjunction with the
multi-year TAC and include:

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 low levels of catch and discards of Bight
Redfish during the previous season.
The RAG recommended continuing with a second year of the existing three year
multi-year TAC of 2334t and an additional 22t research catch allowance. It also
recommended that 10% overcatch and undercatch apply.
Consistent with GABRAG advice AFMA Management recommends continuing
with the second year of the existing three year multi-year TAC of 2334t, a 22t
10
AFMA Management TAC recommendations for the 2013-2014 fishing year
research catch allowance within the TAC and a 10% provision for
overcatch/undercatch be continued for this stock.
1.6. Deepwater Flathead
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
1023t
1
979t
979t
1560t
1150t
-410t
Deepwater Flathead is assessed as a Tier 1 stock with an agreed quantitative
stock assessment. The Tier 1 harvest control rule specifies a target reference
point of 43% of unfished biomass. This assessment gave an RBC of 979t, with
the long term RBC of 1051t.
The RAG noted that the assessment has previously under-estimated the amount
of fish removed during the mid-2000s due to an upper limit being placed on
fishing mortality in previous assessments. The assessment now shows the stock
dropped below the limit reference point in 2008 but has since rebuilt to 39%of
unfished biomass due to recent large recruitment events.
The RAG also noted that availability may be causing some issues with the stock
assessment with dramatically different catch rates during different times in the
2012/13 fishing year.
The RAG discussed the stock being basically at MSY and therefore, in line with
the Commonwealth Fisheries Harvest Strategy Policy, considerations between
short term losses and longer term economic gains can be made.
GABRAG recommended accepting the Tier 1 assessment but considered that
other factors should be taken into account when recommending a TAC. In this
case the RAG stated if the stock was fished above the RBC for a couple of years
there would be no ongoing risk to the stock but it could move the stock away
from the target reference point in the short term.
Given the above, AFMA Management recommends that the TAC for Deepwater
Flathead be set at 1150t for one year. This will lessen the impact on industry of a
large reduction. AFMA management is of the view that, based on currently
available advice, the recommended TAC for the following season will reflect the
RBC advice.
In line with this recommendation AFMA considers the CPUE multiplier rule not be
applied and a 10% provision for overcatch/undercatch be applied for this stock,
as agreed by GABRAG.
In accordance with its Research Catch and Effort Allowance Policy, AFMA is
recommending that 20t be allocated for research within the TAC for the Fishery
Independent Survey. Under the current co-management arrangements, GABIA
will provide its own recommendations to the AFMA Commission regarding the
2013/14 TACs.
11
AFMA Management TAC recommendations for the 2013-2014 fishing year
1.7. Deepwater shark basket – east
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
26t
4
NA
NA
85t
85t
0t
Catches of deepwater shark eastern basket have been low because of closures
in areas where previous catches have been taken. This makes it doubtful that the
catch rate used in the Tier 4 assessment is reflective of stock abundance.
SlopeRAG has previously raised concerns that, with limited catch and effort, it
has difficulty in determining the long-term sustainable catch of deepwater sharks,
particularly with the multiple species in the basket. However the RAG agreed that
existing closures in the fishery provided sufficient precaution for the stock and
recommended the TAC of 85t be maintained. It also agreed that 10% overcatch
and undercatch should apply.
In accordance with its Research Catch and Effort Allowance Policy, AFMA is
recommending that 1t be allocated for research within the TAC. It is predicted
this amount will be caught during the SESSF Fishery Independent Survey.
Consistent with the advice of SlopeRAG, AFMA Management recommends that
the TAC be set at 85t (including 1t research quota), and that 10%
overcatch/undercatch provisions be set for the 2013/14 fishing season.
1.8. Deepwater shark basket – west
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
50t
4
NA
NA
215t
215t
0t
As with the deepwater shark east, catch rates of deepwater shark west were low
and constrained by deepwater closures. SlopeRAG expressed the view that
these catches limited the amount of information available for a Tier 4
assessment. The RAG agreed it was not valid to update the assessment with so
little information and recommended maintaining the current TAC with 10%
overcatch and undercatch.
The RAG supported an industry proposal to amend part of the deepwater trawl
closure adjacent to western King Island to allow for larger catch rates of
deepwater sharks and to reduce the risk of localised depletion. AFMA is currently
considering this proposal.
In accordance with its Research Catch and Effort Allowance Policy, AFMA is
recommending that 1t be allocated for research within the TAC. It is predicted
this amount will be caught during the SESSF Fishery Independent Survey.
12
AFMA Management TAC recommendations for the 2013-2014 fishing year
Consistent with the advice of SlopeRAG, AFMA Management recommends that
the TAC be set at 215t (including 1t research quota), and that 10%
overcatch/undercatch provisions be set for the 2013/14 fishing season.
1.9. Elephant Fish
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
67t
4
NA
NA
89t
109t
+20t
The Tier 4 assessment rules for Elephant Fish would give an RBC for 2013/14 of
186t. However, like last year, SharkRAG did not have confidence in Tier 4 of the
Harvest Strategy for Elephant Fish. This was because:

standardised CPUE for the gillnet fishery is not considered to be reflective
of abundance of Elephant Fish due to the fine scale spatial operations of
the fishery and the active avoidance by gillnet operators

the discard estimate dramatically increased in 2011 from a base level of
about 30 tonnes up to about 132 tonnes. While this relates to one year
only, it raises uncertainty about the actual level of discards and the
application of the Tier 4 model.
Rather than adopting the Tier 4 assessment, SharkRAG recommended an
allowable catch (not RBC) for the 2013-14 season of 109t, the average catch
over the target reference period (1996-2007). SharkRAG also recommended
overcatch and undercatch of 10% be applied for 2013/14. SharkRAG
recommended not using a discount factor because the Tier 4 harvest control
rules were not applied. SharkRAG noted that taking ~130 tonnes of discards
away from the RBC to give a TAC (as required by the Tier 4 methodology) would
lead to very low TACs when SharkRAG did not have concerns about the stock
status. It would also be likely to lead to further discarding.
In accordance with its Research Catch and Effort Allowance Policy, AFMA is
recommending that 1t be allocated for research within the TAC. It is predicted
this amount will be caught during the SESSF Fishery Independent Survey.
Consistent with the advice of SharkRAG, AFMA Management recommends that
the TAC for the 2013-14 season be set at 109t and that overcatch and
undercatch provisions be set at 10%. Also consistent with the RAG’s
recommendation, AFMA Management recommends that no discount factor be
applied noting SharkRAG did not apply Tier 4 rules and did not have concerns
about the stock status. Further, catch rates have been relatively stable around
the mean of the available time series and much of the western part of the fishery
is closed to gillnets.
13
AFMA Management TAC recommendations for the 2013-2014 fishing year
1.10. Flathead
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
2799t
1
N/A
N/A
2750t
2750t
0t
In 2011/12 the TAC for flathead was continued for its final year of a 2 year multiyear TAC. Due to limitations on funding the Tier 1 assessment was not run in
2012 after the following breakout rules were assessed:
•
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; and,
•
if the actual total mortality is greater or less than the projected total
mortality by greater than 20%.
Neither rule was triggered and therefore the RAG recommended maintaining the
flathead TAC at 2750t for a further year noting that this catch posed little threat to
stock. Due to recent improved catch rates the RAG recommended that a new
Tier 1 assessment for flathead should be completed next year.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
recommends that 12t of flathead be included in the TAC and allocated for
research. It is predicted this will be the amount caught during the SESSF Fishery
Independent Survey.
Consistent with ShelfRAG advice AFMA Management recommends a TAC for
flathead of 2750t (including 12t research quota). AFMA Management also
recommends that overcatch/undercatch provisions be set at 10% for the 2013/14
fishing season.
1.11. Gemfish – East
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
77t
1
0t
0t
100t
100t
0t
This stock has been classified as overfished since the commencement of the
BRS 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.
An analysis by CSIRO has shown that targeting of eastern Gemfish has declined
over the past 3 years and during 2011 targeting was estimated below 7t, which
could be an artifact of the targeting definition.
14
AFMA Management TAC recommendations for the 2013-2014 fishing year
ShelfRAG discussed the Tier 1 assessment and considered that the stock is
unlikely to rebuild within the time frames specified in the rebuilding strategy under
the current management arrangements. The assessment showed that even at
zero incidental catch the stock would not move above the limit reference point
before 2020 (the timeframe under the rebuilding strategy). The RAG agreed that
a zero catch is not practical and that the current exploitation rate and level of
targeting is at the lowest it has been for the fishery.
The RAG recognised the effort made by industry to reduce fishing mortality by
about one third between 2010 and 2011. Therefore ShelfRAG recommended that
the 2013/14 incidental TAC be maintained at last year’s level of 100t. The RAG
noted that if recruitment continues at present levels, catch and discards will
remain stable and the RAG did not have concerns with the species at current
catch levels. Based on biomass projections with a 100t catch the stock is
estimated to reach the target reference point in 2025, which is within about 17
years from the implementation of the rebuilding strategy.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
Management is recommending that a further 3t be allocated for research above
the incidental catch TAC. It is predicted this will be the amount incidentally
caught during the SESSF Fishery Independent Survey.
AFMA Management recommends no change to the TAC of 100t (plus 3t
research quota), to be managed under the Eastern Gemfish Rebuilding Strategy.
It also recommends that no overcatch/undercatch provisions be set for the
2013/14 fishing season.
1.12. Gemfish – West
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
69t
1
613t
542t
141t
199t
+58t
There was no updated assessment to inform the RAG and therefore the RAG
agreed that the 2011 Tier 1 assessment should be used as it is more reliable
than the Tier 4 assessment. The RAG discussed high discard rates in the
Commonwealth Trawl sector and noted the showing of juvenile fish in the most
recent age frequency and the reports from industry that limiting quota is causing
discards.
Previously GABRAG has agreed that Western Gemfish could possibly be one
stock from Western Bass Strait to the Great Australian Bight, where spawning
occurs and an application for further research has been proposed. Current
management arrangements in the SESSF determine that only the Gillnet, Hook
and Trap and the Commonwealth Trawl Sectors need to cover catches with
quota, while the Great Australian Bight Trawl Sector are managed on a trigger
limit.
15
AFMA Management TAC recommendations for the 2013-2014 fishing year
The Tier 4 assessment, based on the Commonwealth Trawl sector, was also
considered and the RAG agreed that it could be used to help guide splitting the
quota between the Great Australian Bight Trawl and Commonwealth Trawl
sectors. The RAG recommended using the long term RBC of 613t for the whole
Western Gemfish stock.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
Management is recommending that a further 1t be allocated for research from
within the TAC. It is predicted this will be the amount incidentally caught during
the SESSF Fishery Independent Survey.
AFMA Management, after considering the historical catch rates in the two
sectors, recommends that the TAC for the CTS and GHAT be set at 199t (plus 1t
research quota). It also recommends that overcatch/undercatch provisions be set
at 10% for the 2012/13 fishing season, the same as last year, as agreed by
GABRAG.
1.13. Gummy Shark
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
1468t
1
1836t
1836t
1717t
1717t
0t
The Gummy Shark Tier 1 assessment was last updated in 2010 with data to
2009. Based on this assessment and recent catches, SharkRAG considered that
Gummy Shark is at or near the target reference point.
SharkRAG agreed an RBC of 1836t for both 2011/12 and 2012/13. In
considering the RBC for 2013/14, SharkRAG noted that no concerns had arisen
from recent catch and effort data. Given the stability of the stock, SharkRAG
recommended carrying over the RBC for Gummy Shark of 1836t for the
2013/2014 fishing season and that overcatch and undercatch of 10% apply.
SharkRAG considered that recent marine mammal management measures in
South Australia will likely have significant effects on the catch rates in this region
and may need to be accounted for in future assessments.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
is recommending that 2t of Gummy Shark be allocated for research. Consistent
with the Policy, this research allowance is in addition to the TAC because the
small change limiting rule restricts the TAC to below the sustainable catch. It is
predicted this will be the amount incidentally caught during the SESSF Fishery
Independent Survey.
AFMA Management recommends that the TAC be set at 1717t, plus a research
allowance of 2t, for 2013/14 after the application of the small change limiting rule.
It also recommends that overcatch/undercatch provisions be set at 10% for the
2013/14 fishing season. AFMA Management notes that setting the Gummy Shark
TAC at this level is dependent on the rebuilding of School Shark stocks which are
caught while fishing for Gummy Shark.
16
AFMA Management TAC recommendations for the 2013-2014 fishing year
1.14. Jackass Morwong
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
392t
1
655t
597t
568t
568t
0t
During 2011 ShelfRAG was presented with a new productivity change
assessment for Jackass Morwong which assumed changes to the environment
or biology of the species causing the species to be less productive by having a
lower recruitment regime. In 2012, the RAG updated this assessment with the
most recent catch data.
The 2012 Tier 1 assessment estimated that the spawning biomass has rebuilt to
38% of the unfished biomass in the east. In contrast, the stock in the west is at
66% of the unfished biomass level. While the RAG considers that east and west
areas should be treated as different stocks, in practice the TAC applies across
the species regardless of stock boundaries. Having the two stocks (east and
west) at very different levels of biomass depletion makes them difficult to manage
under one global TAC.
Under application of the Tier 1 Harvest Control Rule, the 2013/14 Jackass
Morwong RBC from the updated assessment is 380t in the east and 275t in the
west, giving a global RBC of 655t. Historically catches in the east have been
higher than the RBC and industry has previously agreed to minimise take from
the east while this part of the stock is rebuilding. The RAG agreed that the catch
in the east has sufficiently reduced and overfishing is no longer occurring.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
is recommending that 2t of Jackass Morwong be allocated for research.
Consistent with the Policy, this research allowance is in addition to the TAC
because the small change limiting rule restricts the TAC to below the sustainable
catch. It is predicted this will be the amount incidentally caught during the SESSF
Fishery Independent Survey.
AFMA Management therefore recommends, after subtracting state catch and
discards from the RBC and applying the latest CPUE multiplier rule and the small
change limiting rule that the TAC be set at 568t (plus 2t research quota). It also
recommends that overcatch/undercatch provisions be set at 10% for the 2013/14
fishing season, the same as last year, as agreed by ShelfRAG.
1.15. John Dory
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
89t
3
NA
NA
221t
221t
0t
17
AFMA Management TAC recommendations for the 2013-2014 fishing year
John Dory is currently in the first year of a 3 year multi-year TAC of 221t.
ShelfRAG noted that the observed catch rates for John Dory were within the
forecast limits, thereby not triggering this or any other of its breakout rules.
ShelfRAG noted the updated assessment with an RBC of 614t but supported
continuing the multi-year TAC of 221t due to the low level of catches.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
is recommending that a further 1t be allocated for research. Consistent with the
Policy, this research allowance is in addition to the TAC because the TAC is
proposed to be maintained at a level lower than the assessed sustainable catch.
It is predicted this will be the amount incidentally caught during the SESSF
Fishery Independent Survey.
AFMA Management recommends rolling over the multi-year TAC of 221t (plus 1t
research quota in addition to the TAC). It also recommends that a 10% provision
for undercatch/overcatch be applied for the 2013/14 fishing season, the same as
last year, as agreed by ShelfRAG.
1.16. Mirror Dory
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
518t
3
2794t
2389t
1077t
1616t
+539t
The Tier 3 assessment was updated with new age data in 2011 and 2012,
providing greater confidence in the assessment. ShelfRAG noted that both the
Tier 3 and 4 assessments show the stock to be significantly greater than the limit
reference point. ShelfRAG remarked that now updated age data is available it
may be possible to develop a Tier 1 assessment.
In accepting the Tier 3 RBC of 2794t for the 2013/14 fishing season, ShelfRAG
discussed the positive indicators with the stock and did not have concerns
regarding the status of the stock at the recommended catch levels. It was noted
that historically there was a companion species relationship between Mirror Dory
and Eastern Gemfish which is likely to have changed due to avoidance of
Eastern Gemfish during its spawning run. Recent CSIRO analysis suggests they
are not close companion species and during 2012 there was no noticeable
increase in Eastern Gemfish catches due to the increased Mirror Dory TAC.
Again this will be monitored during 2013/14.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
Management is recommending that 6t of Mirror Dory be allocated for research.
Consistent with the Policy, this research allowance is in addition to the TAC
because the proposed TAC is lower than the assessed sustainable catch. It is
predicted this amount will be incidentally caught during the SESSF Fishery
Independent Survey.
18
AFMA Management TAC recommendations for the 2013-2014 fishing year
AFMA Management recommends, after applying the 5% discount factor,
subtracting state catch and discards from the RBC, applying the latest CPUE
multiplier rule and the large change limiting rule that the TAC be set at 1616t
(plus research quota of 6t). It also recommends that overcatch/undercatch
provisions be set at 10% for the 2013/14 fishing season, as recommended by
ShelfRAG.
1.17. Ocean Perch
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
227t
4
330t
198t
234t
195t
-39t
There are two stocks of Ocean Perch – Inshore and Offshore, with Inshore
generally regarded as a bycatch species (80% discards) and Offshore
occasionally discarded. Inshore Ocean Perch were defined as those catches
from depths of 0 – 200 m.
ShelfRAG has previously expressed concern over the Inshore Ocean Perch Tier
4 assessment and had decided that, due to the high discard rate in the fishery,
the assessment should include discards. This year discards were also included
into the assessment for Offshore Ocean Perch as the discards were higher than
expected.
Consistent with last year the RAG considered the high discards in the TAC
calculation process and applied the harvest control rules to each species
separately and then added the final TACs to give a global TAC. The RAG
suggested Ocean Perch is a secondary species and presented two RBCs for
both the B40 and B48 (see page 5). The B48 RBCs being 126t and 204t for Inshore
and Offshore Ocean Perch, respectively, resulting in a total RBC of 330t for both
stocks.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
Management recommends that 4t of Ocean Perch (1t inshore, 3t offshore) be
allocated as part of the TAC for research. It is predicted this will be the amount
incidentally caught during the SESSF Fishery Independent Survey.
AFMA Management therefore recommends, after applying the 15% discount
factor, subtracting state catch and discards from the RBC and applying the latest
CPUE multiplier rule that the TAC be set at 195t (including research catch
allowance of 4t). It also recommends that overcatch/undercatch provisions be set
at 10% for the 2013/14 fishing season, as recommended by ShelfRAG.
1.18. Orange Roughy – General
The Orange Roughy Conservation Programme (ORCP) specifies that only fishing
activities required to support research and to monitor the recovery of Orange
Roughy stocks in the south-east (which under the programme includes the
western zone) can be conducted. These research and monitoring activities can
19
AFMA Management TAC recommendations for the 2013-2014 fishing year
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 zone Orange Roughy have
been established on the basis of the unavoidable incidental catch taken as a
result of fishing for other species. Under the Orange Roughy Conservation
Programme, targeting Orange Roughy is allowed only on the Cascade Plateau.
The ORCP is being reviewed this year however the review will not affect the
setting of the 2013/14 TACs.
1.19. Orange Roughy – South
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
17t
1
NA
NA
35t
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 unavoidable 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 2013/14 fishing season.
Consistent with the ORCP, AFMA Management recommends maintaining the
TAC at 35t, and that no provisions for undercatch/overcatch be applied for the
2013/14 fishing season, the same as last year, as recommended by SlopeRAG.
1.20. Orange Roughy – East
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
25t
1
NA
NA
25t
25t
0t
Eastern Zone Orange Roughy has previously been assessed using a Tier 1
assessment. However due to concerns about the conflict between ageing
estimates in the model and results of the 2010, 2011 and 2012 acoustic surveys
SlopeRAG did not accept the assessment. The RAG noted that both the
assessment and the surveys show the biomass is trending up but they differ in
the current depletion level.
The RAG acknowledged the current TAC of 25t in the eastern zone should be
adequate to cover any unavoidable incidental catch and will not impede the
recovery of the stock. SlopeRAG therefore recommended that the 25t TAC
should be maintained for the 2013/14 fishing season.
The first year of a two year acoustic optical survey project to investigate stock
structure of eastern zone Orange Roughy was conducted in 2012. 165t of
research catch allowance was granted for this project during the 2012/13 season,
20
AFMA Management TAC recommendations for the 2013-2014 fishing year
with the project scheduled to continue during 2013/14. SlopeRAG recommended
a further 165t research catch allowance be granted in addition to the TAC during
the upcoming season and advised that this level of research catch posed little
risk to the long term recovery of the species.
Consistent with SlopeRAG advice and the ORCP, AFMA Management
recommends maintaining the TAC at 25t, and that no provisions for
undercatch/overcatch are applied for the 2013/14 fishing season.
In accordance with AFMA’s Research Catch and Effort Allowance Policy AFMA
recommends that a research catch allowance of 165t in addition to the TAC be
granted for the purpose of continuing the acoustic optical survey investigating the
stock structure of eastern zone Orange Roughy.
1.21. Orange Roughy – West
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
34t
1
NA
NA
60t
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 should
cover any unavoidable incidental catch and does not impede the recovery of the
stock. Accordingly, SlopeRAG recommended that the 60t TAC for 2013/14 be
maintained for the next fishing season.
Consistent with SlopeRAG advice and the ORCP, AFMA Management
recommends maintaining the TAC at 60t, and that no provision for
undercatch/overcatch is applied for the 2013/14 fishing season.
1.22. Orange Roughy – Cascade Plateau
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
7t
1
NA
NA
500t
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 must 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
that no new information was available. The RAG also recommended 10%
undercatch/overcatch be applied for the 2013/14 season.
21
AFMA Management TAC recommendations for the 2013-2014 fishing year
Due to little data being available from low effort over the last few years the RAG
was uncertain when a new assessment would be able to be undertaken.
Consistent with the ORCP and SlopeRAG’s advice, AFMA Management
recommends that the TAC be maintained at 500t, and that a 10% provision for
undercatch/overcatch be applied for the 2013/14 fishing season.
1.23. Orange Roughy – Albany & Esperance
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
0t
1
NA
NA
50t
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 2012/13
TAC of 50t to cover incidental catch and also advised that this posed little risk to
the stock.
GABRAG recommended that the Orange Roughy research program in the GAB
trawl sector be continued in 2013/14 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
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
<1t
4
NA
NA
150t
150t
0t
There have been low catches and effort in this fishery, due to the majority of the
deepwater fishery being closed. SlopeRAG considered the 2011 Tier 4
assessment that gave an RBC of 710t and acknowledged this RBC is
unrealistically high. The RAG did not have confidence in catch rates as an
indicator of stock size due to the effect of closures on deepwater species like
Smooth Oreo.
For this reason, SlopeRAG was doubtful whether applying Tier 4 assessment
was appropriate. Despite the lack of assessment the RAG had no concerns with
this fishery in terms of the distribution of catches or the catch rates of those
catches that were reported. Therefore the RAG recommended maintaining the
2012/13 TAC of 150t.
22
AFMA Management TAC recommendations for the 2013-2014 fishing year
Consistent with SlopeRAG’s advice, AFMA Management recommends that the
TAC be set at 150t and that a 10% provision for undercatch/overcatch be applied
for the 2013/14 fishing season, the same as last year.
1.25. Oreo smooth – other
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
1t
4
NA
NA
23t
23t
0t
SlopeRAG noted that deepwater closures have been influential on catches of this
species, with most of the historical catches having been taken in these areas
before they were closed. Industry has requested that part of these closures be
amended to improve catches of deepwater shark in waters adjacent to western
King Island. As a consequence greater access would also be allowed for Oreos.
AFMA Management is in the process of considering this proposal.
The RAG acknowledged there are limited catch records over the last five years
and the Tier 4 is unreliable due to these low catches. The RAG noted that this
species has the added precaution of closures, including Commonwealth marine
reserves. Consistent with last year’s advice the RAG recommended continuing
with the ongoing TAC of 23t and recommended not running the assessment until
catches get above a 10t trigger. Once this catch limit is met the RAG considered
they should have enough data to reassess the stock but noted it may still not be
extensive enough to give an accepted Tier 4 assessment.
AFMA Management recommends that the TAC be set at 23t and the TAC only
be reassessed once the 10t trigger is reached, and that a 10% provision for
undercatch/overcatch be applied for the 2013/14 fishing season, the same as last
year.
1.26. Oreo basket
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
98t
4
132t
132t
113t
113t
0t
The Oreo basket includes the following species: 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 was again based only on data from areas currently open to
the fishery. The catch rates increased slightly in 2011 but have been relatively
stable over the past 6 years. The Tier 4 analysis gave an RBC of 132t, which
was accepted and recommended by SlopeRAG. The RAG also recommended
that, as in previous years, the precautionary 15% discount factor for Tier 4
23
AFMA Management TAC recommendations for the 2013-2014 fishing year
assessments should 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 113t, and that
a 10% provision for undercatch/overcatch be applied for the 2013/14 fishing
season.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
recommends that 2t be allocated for research. Consistent with the Policy, this
research allowance is in addition to the TAC because the small change limiting
rule restricts the TAC to below the sustainable catch. It is predicted this will be
the amount incidentally caught during the SESSF Fishery Independent Survey.
1.27. Pink Ling
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
1226t
1
713t
NA
1000t
850t
-150t
In 2011, SlopeRAG considered a revised assessment in which the population
model was fitted to data disaggregated by zone which suggested the RBC should
be 0t. SlopeRAG did not accept this assessment and instead recommended an
RBC based on the results of projections of the 2010 model under different catch
levels while further work was undertaken on the appropriate model structure.
This was regarded by the RAG as an acceptable compromise between the need
to have some precaution due to the revised assessment result and the desire not
to unnecessarily reduce the TAC because the assessment had not been
accepted.
A workshop was held in 2012 to further consider the assessment. This, together
with discussion at the RAG, led to a model similar to the 2010 model being
accepted but with the addition of time-varying growth. This model estimated the
Pink Ling stock to be near the target reference point in the west but depleted
below target in the east.
The RAG recommended the RBCs for 2013/14 from this base-case model, 223t
for the eastern stock and 490 t for the western stock, giving a total RBC of 713t.
Recognising that the results of the zone-based assessment raise issues about
the current stock status of Pink Ling (in particular in the east) and so further
analyses of the data and updates of the assessment will be required.
Model projections using a number of TAC scenarios higher than the modified
2010 model RBC of 713t were used by the RAG to assess the implications of
higher catches on stock rebuilding. It was noted that, assuming average
recruitment, the higher catches scenarios (TACs) posed no noticeable risk in the
short term to the recovery of the stock. The RAG discussed Pink Ling being a
major economic driver in the SESSF and large TAC reductions would have a
significant negative impact on the profitability within the fishery.
24
AFMA Management TAC recommendations for the 2013-2014 fishing year
AFMA Management considered these scenarios and has recommended a
stepped reduction to mitigate the effect of a sudden large reduction in TAC.
Consistent with SlopeRAG’s advice that a stepped reduction to the RBC would
not present risks to the recovery of the stock, AFMA Management recommends
that the TAC be set at 850t (including research quota) and a 10% provision for
undercatch/overcatch be applied for the 2013/14 fishing season. AFMA
management is of the view that, based on currently available advice, the
recommended TAC for the following season will reflect the RBC advice.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
recommends that 4t of Pink Ling be included in the TAC for research. It is
predicted this amount will be incidentally caught during the SESSF Fishery
Independent Survey.
1.28. Redfish
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
92t
3
NA
NA
276t
276t
0t
Redfish is currently assessed as a Tier 3 species and ShelfRAG agreed with that
assessment. The RAG agreed that Redfish could currently be managed as a
secondary species (to help achieve maximum economic yield across the fishery
as a whole, see discussion above), recommending two RBCs of 2932t (B48) and
3843t (B40). The RAG considered the Tier 3 assessment is based on good
ageing data and shows that the stock is close to the target.
This was in contrast to the Tier 4 assessment which suggested that catch rates
have been decreasing, the stock is currently below the limit reference point and
would give rise to an RBC of 0t. ShelfRAG discussed the inconsistency between
the Tier 3 and Tier 4 assessment results, which showed that although catch rates
are decreasing, the age and size structure are indicative of a healthy stock. The
RAG concluded that the Tier 3 is a better assessment and, given the small
change in age structure, concluded that the reduction in catch rates was driven
by availability.
The RAG noted that it has been precautionary in its previous decisions in
reducing the TAC based on the potential concerns of the Tier 4 assessment.
However, in the current case, the RAG considered that reducing the TAC further
would not reduce fishing mortality. Accordingly, the RAG recommended
maintaining the 2012-13 TAC, flagging a need to look into further research for
next year, particularly a historical review of the fishery, and the possibility of a
Tier 1 assessment for Redfish. The RAG also noted that the TAC needs to be
able to respond quickly if the availability of the stock increases.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
Management recommends that 1t of Redfish be allocated as part of the TAC for
25
AFMA Management TAC recommendations for the 2013-2014 fishing year
research. It is predicted this amount will be incidentally caught during the SESSF
Fishery Independent Survey.
Consistent with ShelfRAG advice AFMA Management recommends maintaining
the TAC for Redfish at 276t (including research quota of 1t) for 2013/14. AFMA
further recommends that a 10% provision for undercatch/overcatch be
maintained for the 2013/14 fishing season.
1.29. Ribaldo
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
116t
4
232t
192t
168t
168t
0t
Ribaldo is taken as a by-product of fishing for other species with only about 5%
of the catch being targeted. It is caught in equal amounts by trawl and auto
longline methods.
Ribaldo has been assessed as a Tier 4 species since 2008. In 2012 the
assessment was updated with the latest catch and effort data. The RAG has
previously noted concerns that the combination of changes in the history of the
fishery for Ribaldo meant that the catch rates series from trawling did not reflect
abundance. The view has also been expressed, however, that the gradual
change in catch rates of the fishery is that which would be expected in a
developing fishery. SlopeRAG recommended Ribaldo could be managed as a
secondary species and accepted the Tier 4 assessment recommending two
RBCs of 232t (B48) and 321t (B40).
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
Management recommends that 1t of Ribaldo be included in the TAC and
allocated for research. It is predicted this amount will be incidentally caught
during the SESSF Fishery Independent Survey.
Consistent with SlopeRAG advice, AFMA Management recommends applying
the 15% discount factor and the latest CPUE multiplier rule. The small change
limiting rule is applied and the TAC is recommended at 168t (including research
quota of 1t). It also recommends that a 10% provision for undercatch/overcatch
be applied for the 2013/14 fishing season.
1.30. Royal Red Prawn
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
131t
4
352t
333t
303t
303t
0t
Royal Red Prawn was assessed as a Tier 4 species. ShelfRAG noted that effort
in this fishery is low and has been constrained due to the high Australian dollar
and cheap imports.
26
AFMA Management TAC recommendations for the 2013-2014 fishing year
ShelfRAG considered an analysis of catch rates for different cod-end mesh sizes
(prawn and fish trawl) noting the previous concerns of the inclusion of this data in
the Tier 4 assessment. It was concluded that whilst catch rates between mesh
sizes are different, the catch trends (up and down) for both mesh sizes are very
similar, and based on this the application of the Tier 4 assessment was accepted.
The RAG accepted the Tier 4 RBC of 352t and also, as in previous years,
recommended not to apply 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.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
Management is recommending that 0.5t from within the Royal Red Prawn TAC
be allocated for research. It is predicted this will be the amount caught during the
SESSF Fishery Independent Survey.
Consistent with ShelfRAG advice AFMA Management recommends, after
subtracting state catch and discards from the RBC and applying the latest CPUE
multiplier rule and small change limiting rule, that the TAC be set at 303t
(including a research catch allowance of 0.5t) . It also recommends applying a
10% provision for undercatch/overcatch for the 2013/14 fishing season.
1.31. Saw Shark
20011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change
RBC
TAC rec
from
2012/13
201t
4
368t
368t
226t
339t
+113t
In 2012, following a recommendation from SEMAC, a Tier 4 assessment was run
using trawl CPUE. This produced an RBC of 514t, a significant increase from the
2011 RBC recommendation of 340t. In contrast, the Tier 4 assessment using
gillnet net data gave an RBC for 2013/14 of 234t. SharkRAG did not accept
either outcome as it did not have confidence in the Tier 4 rules as applied to Saw
Shark. This was because:

standardised CPUE for the gillnet fishery is not considered to be reflective
of abundance of Saw Shark due to the fine scale spatial operations of the
fishery and the active avoidance by gillnet operators

trawl CPUE gave an RBC that was significantly higher than previous years

the level of current and historical discarding is not well understood and this
would affect the standardisation process

of concerns that there may be a higher level of discarding if TAC was set
too low. Although Saw Shark TAC was 63% caught in 2011-12,
SharkRAG industry members noted that in some cases limited quota
availability would restrict landed catch of Saw Shark leading to discards.
27
AFMA Management TAC recommendations for the 2013-2014 fishing year
SharkRAG recommended an RBC for 2013/14 of 368t, which is the average
catch over the target reference period (2002-2008). It also recommended
overcatch and undercatch of 10% be applied. SharkRAG recommended not
using a discount factor because Tier 4 harvest control rules were not applied.
While not conclusive, both gillnet and trawl catch rates have been noisy but flat
from 2002. Significant area closures, particularly in South Australia, provide
additional precaution for the stock.
In accordance with its Research Catch and Effort Allowance Policy, AFMA is
recommending that 3t be allocated for research. Consistent with the Policy, this
research allowance is in addition to the TAC because the small change limiting
rule restricts the TAC to below the sustainable catch. It is predicted this amount
will be caught during the SESSF Fishery Independent Survey.
Consistent with the advice of SharkRAG and after application of the large change
limiting rule, AFMA Management recommends that a TAC for the 2013-14
season be set at 339t (plus a research catch of 3t). It also recommends that
overcatch and undercatch provisions set at 10% and no discount factor be
applied.
1.32. School Shark
2011/12
Catch
2012/13
TAC
Tier
2012/13
RBC
C’wealth
RBC
AFMA 2012/13 Change from
TAC rec
2011/12
163t
150t
1
0t
0t
218t
+68t
The most recent stock assessment for School Shark, completed in 2009, resulted
in a biomass estimate below the default BLIM of 20% of unfished levels. This
means that there can be no targeted fishing for School Shark.
Accordingly, the RBC for 2013-14 is recommended at 0t.
SharkRAG noted the recommendations of the School Shark Workshop held 4
and 5 of September 2012 for SharkRAG to determine:

the unavoidable bycatch level of School Shark using a weight of evidence
approach (e.g. average landings over the last 10 years, ISMP data
including discards when available) for the purposes of the 2013/14
incidental bycatch

whether that level of incidental bycatch would allow for stock recovery.
SharkRAG considers that the true estimate of incidental bycatch of School Shark
is above the TAC levels set in recent years. Based on the last full year of data
(2011 calendar year) the landed catch was 182t. At this level SharkRAG industry
representatives estimated that approximately 20% of the catch is still discarded.
The ISMP currently does not provide reliable estimates of discarding for School
Shark; however, this level of discarding is supported by data from logbooks
(~14.7%). Thus the estimate of the true incidental bycatch was calculated by
28
AFMA Management TAC recommendations for the 2013-2014 fishing year
SharkRAG as the last full year catch and the estimated discards (180.684 x 1.2 =
218.02t).
The assessment model suggests that this level of incidental bycatch would lead
to recovery to above the limit reference point (20% of original) within 58 years (or
less than three generations).
SharkRAG noted that in terms of impact on stock size, total mortality (landed
catch plus discards) is of primary importance, not the landed catch alone and it
was important to understand total mortality for future indices of abundance.
SharkRAG remained concerned about the status of school shark, but notes that
there are a number of signals that indicate that the stock is rebuilding (e.g.
reports of increasing catches from gillnet and trawl fishers). The RAG also
remained concerned that the assessment model is unable to provide a clear and
unambiguous picture of the status of School Shark and is working to improve this
situation through development of a current index of abundance.
AFMA management continues to endorse the use of the 20% rule to minimise
targeting of School Shark and consider this an important component of the
recovery of this species.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
Management recommends 3t be allocated for research in addition to the 218t
incidental TAC. It is predicted this amount will be incidentally caught during the
SESSF Fishery Independent Survey.
Consistent with SharkRAG advice, AFMA Management recommends an
incidental TAC for School Shark be set at 218 tonnes for the 2013/14 season
with no overcatch and undercatch provisions.
1.33. School Whiting
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
359t
1
1660t
788t
641t
809t
+168t
The stock assessment is based on Eastern School Whiting, (Sillago flindersi),
which is the species that dominates the SESSF catches. Eastern School Whiting
(also known as Red Spot Whiting) occur from southern Queensland to western
Victoria. Early genetic studies suggested two stocks in this range, with the
division between ‘northern’ and ‘southern’ stocks in the Sydney–Jervis Bay area.
The evidence for more than one stock is weak and current SESSF management
assumes a single stock. Most of the catch is taken in eastern Bass Strait by
Danish seine, with trawl catch increasing since 2009. Trawl catch rates have
remained stable, however Danish seine catch rates has been variable (due to
market factors) but is considered flat overall.
As School Whiting is a short-lived species, spawning biomass is particularly
sensitive to variations in recruitment events, and good and bad recruitment years
29
AFMA Management TAC recommendations for the 2013-2014 fishing year
can have a rapid impact on the stock. As a result there will always be
considerable variation and uncertainty about the status of the stock.
ShelfRAG noted that for the last two years a Tier 1 assessment has been used
as the basis for a constant catch risk assessment strategy for School Whiting,
and the RAG agreed that this still remains the best approach. The RAG
recommended an RBC of 1660t and advised that at this RBC there was little
concern of the stock falling to below the limit reference point over the next few
years.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
Management recommends 1t of School Whiting be included in the TAC and
allocated for research. It is predicted this amount will be incidentally caught
during the SESSF Fishery Independent Survey.
Consistent with Shelf RAG advice AFMA Management recommends, after
subtracting state catches and discards from the RBC and applying the latest
CPUE multiplier rule, that the TAC be set at 809t (including research quota of 7t).
It also recommends that a 10% provision for undercatch/overcatch be maintained
for the 2013/14 fishing season.
1.34. Silver Trevally
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
168t
4
980t
812t
678t
781t
+103t
Silver Trevally occurs across south-eastern Australia and is considered one
stock. It is predominately caught by Commonwealth and State trawlers.
Silver Trevally is assessed as a Tier 4 species and in the last several years,
catch rates for this species have increased and are above catch rates in the
target reference period. Application of the Tier 4 harvest control rules resulted in
ShelfRAG recommending an RBC of 980t. The RAG agreed that due to area
closures the 15% precautionary discount factor was not necessary, as in
previous years. The default 10% overcatch and undercatch values were
considered to be appropriate for Silver Trevally and a research catch allowance
of 1t was recommended to be included in the TAC.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
Management recommends that 1t of Silver Trevally be included in the TAC and
allocated for research. It is predicted this amount will be incidentally caught
during the SESSF Fishery Independent Survey.
Consistent with ShelfRAG advice AFMA Management recommends, after
subtracting state catch and discards from the RBC, and applying the CPUE
multiplier, that the TAC be set at 781t (including research quota of 7t). It also
recommends that a 10% provision for undercatch/overcatch be maintained for
the 2013/14 fishing season.
30
AFMA Management TAC recommendations for the 2013-2014 fishing year
1.35. Silver Warehou
2011/12 2012/13
Catch
TAC
Tier
2013/14
RBC
C’wealth AFMA 2013/14 Change from
RBC
TAC rec
2012/13
1050t
1
2544t
2543t
2566t
2566t
0t
Studies of stock structure indicate that Silver Warehou should be considered and
managed as a single stock in the SESSF. During 2012/13 the species was on its
last year of a 3 year multi-year TAC. As part of the implementation of the
multi-year TAC the following breakout rules were developed and applied to Silver
Warehou:

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 discards exceed 20% of the TAC; or

if age composition of the Silver Warehou stock is significantly different
from that predicted by the model; or

if the proportion of the TAC caught differs by more than 20% from the
average over the last three years.
During 2012, the RAG confirmed that the first break out rule had been triggered
with catch rates falling outside predicted levels. After discussion about issues of
resourcing and priorities it was agreed to update to the Tier 1 assessment.
The RAG agreed on an updated Tier 1 assessment suggesting the stock is at
47% of unfished biomass (1% less than the 2009 assessment). The RAG
discussed the fact the break out rule had been triggered and this was attributed
to recruitment being lower than the model estimated. It was also suggested that a
breakout for this reason could occur frequently and it may be that this rule is not
a good a good indicator of a stock decline.
The RBC from the base case model was 2544t. The RAG recommended a
multi-year TAC for three years, 10% undercatch/overcatch and a research catch
allowance of 25t to be included in the TAC.
In accordance with AFMA’s Research Catch and Effort Allowance Policy, AFMA
Management recommends that 25t of Silver Warehou be allocated as part of the
TAC for research. It is predicted this amount will be incidentally caught during the
SESSF Fishery Independent Survey.
Consistent with SlopeRAG’s advice, AFMA Management recommends
implementing a three year multi-year TAC 2566t per year (including research
quota of 25t) after application of the small change limiting rule and that a 10%
provision for undercatch/overcatch is applied for the 2013/14 fishing season.
31
AFMA Management TAC recommendations for the 2013-2014 fishing year
Non Quota Species
Section 15 of the Southern and Eastern Scalefish and Shark Management Plan
2003 provides that AFMA may determine a TAC for a non-quota species. In
determining a TAC for a non-quota species or a non-quota species fished with a
particular method or in a particular area of the fishery AFMA must have regard to
reference points for the species if determined.
Before the AFMA Commission determines a TAC for a non-quota species for a
fishing year, it must consult and consider the views of each relevant
management advisory committee. It must take into account advice from the
relevant resource assessment group about the stock status of a non-quota
species and may consider the views of any other interested person. It must also
take into account all fishing mortality from all sectors within the fishery and
overlapping or adjacent fisheries, the ecological implications of harvesting the
TAC, the distribution and population structure of the species and the
precautionary principle.
Boarfish and Orange Roughy within the East Coast Deepwater Trawl (ECDWT)
Sector are the only species for which non-quota TACs are 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 non-quota species TACs for the season the fishery (sector)
will be closed. SlopeRAG considered the TACs for these species out of session
and recommended the current TACs be maintained.
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.
Non-quota species
Total Allowable Catch
Whole weight
Boarfish
200 tonnes
(trigger limit)
Orange Roughy
50 tonnes
Whole
weight
(incidental catch)
32
AFMA Management TAC recommendations for the 2013-2014 fishing year
Summary Table of AFMA Recommendations for quota species
Species
2011/12 2012/13 Tier
Catch
TAC (t)
(t)
2013/14 C’wealth AFMA
RBC (t) RBC (t) 2013/14
TAC rec
(t)
Change
from
2012/13
(t)
Alfonsino
201
750
3
1196
1133
1125
+375
eye 355
388
4
NA
NA
388
0
Blue
Trevalla
Blue Grenadier
4081
5208
1
NA
NA
5208
0
Blue Warehou
97
118
4
0
0
118
0
Bight Redfish
352
2334
1
NA
NA
2334
0
Deepwater
Flathead
1023
1560
1
979
979
1150
-410
Deepwater
26
Shark Basket East
85
4
NA
NA
85
0
Deepwater
50
Shark Basket –
West
215
4
NA
NA
215
0
Elephant Fish
67
89
4
NA
NA
109
+20
Flathead
2799
2750
1
N/A
N/A
2750
0
Gemfish - east
77
100
1
0
0
100
0
Gemfish - west
69
141
1
613
542
199
+58
Gummy Shark
1468
1717
1
1836
1836
1717
0
Jackass
Morwong
392
568
1
655
597
568
0
John Dory
89
221
3
NA
NA
221
0
Mirror Dory
518
1077
3
2794
2389
1616
+539
Ocean Perch
227
234
4
330
198
195
-39
33
AFMA Management TAC recommendations for the 2013-2014 fishing year
Orange
Roughy
southern
17
35
1
NA
NA
35
0
Orange
Roughyeastern
25
25
1
NA
NA
25
0
Orange
Roughy
western
34
60
1
NA
NA
60
0
Orange
Roughy
Cascade
7
500
1
NA
NA
500
0
Orange
0
Roughy Albany
& Esperance
50
1
NA
NA
50
0
Oreo, Smooth <1
– Cascade
150
4
NA
NA
150
0
Oreo, Smooth - 1
Other
23
4
NA
NA
23
0
Oreo, Basket
98
113
4
132
132
113
0
Pink ling
1226
1000
1
713
NA
850
-150
Redfish
92
276
3
NA
NA
276
0
Ribaldo
116
168
4
232
192
168
0
Red 131
303
4
352
333
303
0
Saw Shark
201
226
4
368
368
339
+113
School Whiting
359
641
1
1660
788
809
+168
School Shark
163
150
1
0
0
218
+68
Silver Trevally
168
678
4
980
812
781
+103
2566
1
2544
2543
2566
0
Royal
Prawn
Silver Warehou 1050
34
AFMA Management TAC recommendations for the 2013-2014 fishing year
35
AFMA Management TAC recommendations for the 2013-2014 fishing year