Search results
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Progress towards an assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 882C–H for the years 2002–03 to 2015–16 using a two-area model
(SSRUs 88.2C–G) comprising a mix of large mature fish and small immature fish. Two-area stock assessment ... collect mark-recapture data in the South to help inform the estimation of biomass in the South. We present ... an update on these two-area stock models, which include two years of new data collected under a ... research plan. The assessment models were fit to the proportions-at-age in the catch and the mark-recapture ...
Meeting Document : WG-FSA-16/44 : Author(s): S. Mormede, K. Large and S. Hanchet
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Joint research proposal for Dissostichus spp. in Subarea 88.3 by the Republic of Korea and New Zealand
of Antarctic toothfish in Subarea 88.3 and the Scientific Committee has requested members complete research ... toothfish in Subarea 88.3 and the Scientific Committee has requested members complete research in this area ...
Meeting Document : WG-FSA-17/40 : Author(s): Delegations of the Republic of Korea and New Zealand
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Foraging movements of the shy albatross Diomedea cauta breeding in Australia; implications for interactions with longline fisheries
travelled by the birds and the duration of their foraging trips varied during the breeding cycle and tended ... by the birds and the duration of their foraging trips varied during the breeding cycle and tended to decrease ...
Meeting Document : WG-FSA-98/33 : Author(s): N. Brothers, R. Gales, A. Hedd and G. Robertson (Australia)
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Large-scale oceanographic fluctuations drive Antarctic petrel survival and reproduction
Abstract: Polar Regions are experiencing environmental changes at unprecedented rates. ese ... predators forage over large areas, these indirect e ects may be associated with large-scale patterns of ... predict variation in the demographic parameters of Antarctic seabirds. First, we used a long-term dataset ... on adult survival (estimated from capture–mark–recapture data) and reproduction of Antarctic petrel ...
Meeting Document : WG-EMM-16/P14 : Author(s): S. Descamps, A. Tarroux, S.-H. Lorentsen, O.P. Love, Ø. Varpe and N.G. Yoccoz
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Revised research plan for the exploratory longline fishery for Dissostichus spp. in 2014/15 in Division 58.4.3a
improve the estimation of current biomass. The stock size in division 58.4.3a was estimated during WG-FSA ... 2013 using the Petersen estimator, CASAL model and the CPUE x seabed analogy method. The estimates of ... biomass are highly biased, because catch data used in the calculation derived from a small location at ... which catch rates are known to be much lower. Given these results and the concentration of fishing ...
Meeting Document : WG-FSA-14/05 : Author(s): Delegation of France
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Comparison of the catches and biological characteristics of Dissostichus mawsoni in Subarea 88.1 in seasons of 2002/03 and 2003/04
Abstract: This report presents results of an exploratory fishery for Antarctic toothfish (D ... . mawsoni) conducted by the Russian vessels “Yantar” and “Volna” for two seasons of 2002/03 and 2003/04. The ... analysis of data collected relates to catch composition, effort, CPUE, and biological characteristics in ... different SSRU, month and depth of sets longlines. The comparison of these resultants showed that in the ...
Meeting Document : WG-FSA-04/84 Rev. 1 : Author(s): K.V. Shust, N.V. Kokorin and A.F. Petrov (Russia)
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Estimating future krill catches that meet the CCAMLR and alternative decision rules for FAO Subarea 48.1 using an integrated assessment model
then applies these parameter values to future projections (2015-2034) at pre-specified levels of future ... estimate the effects of the fishery on the krill population. The model estimates parameters representing ... the CCAMLR decision rules. An alternative pair of decision rules to those currently employed by CCAMLR ... spawning biomass instead of to projections with no fishing. Catch levels that meet the various decision ...
Meeting Document : WG-EMM-15/51 Rev. 1 : Author(s): D. Kinzey, G.M. Watters and C.S. Reiss (USA)
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The toothfish fishery and tagging program in the Amundsen Sea region (SSRUs 882C–H) to 2016/17
of tagged fish at liberty and therefore the number of recaptures of tagged fish is likely to increase ... plan since the 2015 fishing season. The aim of the research plan is to collect sufficient information ... to carry out a reliable stock assessment of the toothfish stock in that area. In this report, we ... precautionary. In the 2016 and 2017 seasons, a total of 19 tagged fish (excluding within season recaptures) were ...
Meeting Document : WG-FSA-17/39 : Author(s): S. Parker and S. Mormede
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An integrated stock assessment for the Crozet Islands Patagonian toothfish (Dissostichus eleginoides) fishery in Subarea 58.6
(Dissostichus eleginoides) fishery of the Crozet Islands, CCAMLR sub-area 58-6, with data up to the end of the ... season 2018/2019 (End of August 2019). This updated assessment model is based on the best available data ... data that account for fish removals (fishing mortality and depredation) and support the estimation of ... their associated selectivity functions. Compared to the previous assessment presented at WG-FSA 17 ...
Meeting Document : WG-FSA-2019/57 Rev. 1 : Author(s): F. Massiot-Granier, G. Duhamel and C. Péron
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Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass
the spawning stock (as a proportion of SB0) at the end of the projection run (level of escapement ... , while the second is a generalised yield model. The decision rules relate to the effects of a specified ... long-term annual yield (γ) on (i) the probability of the spawning stock being reduced below a set ... proportion of SB0 during a projection run (probability of critical depletion) and (ii) the median status of ...
Meeting Document : WG-EMM-97/45 : Author(s): de la Mare, W.K., Constable, A.J.