Search results
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A system-of-equations approach to modeling age structured fish populations: the case of Alaskan red king crab, Paralithodes camtschaticus
Abstract: This paper presents a simultaneous system-of-equations approach to modeling age ... properties of a delay-difference model. The framework shares a common spawner-recruit function across age ... variable, lessening the effect of measurement errors in estimation. The dynamic features of the underlying ... effect of measurement error and improve overall estimation efficiency. A seemingly unrelated regression ...
Meeting Document : WS-CRAB-93/23 : Author(s): J.A. Greenberg, S.C. Matulich and R.C. Mittelhammer (USA)
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A simulation study of the method of refining the natural mortality coefficient with Champsocephalus gunnari in Subarea 48.3 used as an example
Abstract: The method of refining the natural mortality coefficient is based on the notion that ... the free component of the regression equation between the mean-weighted coefficient of natural ... . As a result of this mathematical modelling study using C. gunnari in Area 48.3 as an example, it was ... shown that the proposed method facilitates such a refinement. When a mistake is made in the choice of ...
Meeting Document : WG-FSA-91/25 : Author(s): P.S. Gasiukov and R.S. Dorovskikh (USSR)
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Updated stock assessment of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Kerguelen Islands (division 58.5.1)
Abstract: This paper presents the latest developments in model of Kerguelen with an updating of ... input data from the more recent years (up to 2016/17 season) and a reassessment of stocks taking into ... account the previous remarks of the WG-FSA meetings. Author(s): R. Sinegre, G. Duhamel and J.B. Lecomte ... Title: Updated stock assessment of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of ...
Meeting Document : WG-FSA-17/60 : Author(s): R. Sinegre, G. Duhamel and J.B. Lecomte
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An investigation of avoidance by Antarctic krill of RRS James Clark Ross using the Autosub-2 autonomous underwater vehicle
of RRS James Clark Ross in the northern Weddell Sea and in the Bransfield Strait to assess avoidance ... of the research vessel by Antarctic krill Euphausia superba. The AUV was equipped with the same type ... of scientific echosounder as the research vessel (Simrad EK500 operating at 38 kHz and 120 kHz) and ... measured the density of krill along transect acoustically (g m-2 wet mass) prior to the ship’s arrival. We ...
Meeting Document : WG-EMM-01/14 : Author(s): A.S. Brierley, P.G. Fernandes, M.A. Brandon, E. Armstrong, D.G. Bone and the Autosub Team (United Kingdom)
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An automated weighing and recording system as an aid for the study of the foraging ecology of Adelie penguins (Pygoscelis adeliae)
Abstract: A System that automatically weighs, identifies and determines the direction of penguins ... colony (589 nests from which 412 chicks were fledged) and related to the foraging ecology of the Adélie ... /2 breeding season. The System logged more than 80,000 penguin crossings over a period of three ... of food to the chick per visit despite males being approximately 480g (11.5%) heavier when empty. A ...
Meeting Document : WG-CEMP-92/20 : Author(s): K. Kerry, J. Clarke and G. Else (Australia)
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An updated glossary of terms relevant to the management of Vulnerable Marine Ecosystems (VMEs) in the CCAMLR Area
Abstract: In 2009 SC-CCAMLR identified a list of tasks to be considered intersessionally to ... adverse impacts on certain benthic habitats, termed Vulnerable Marine Ecosystems (VMEs). One of the ... identified intersessional tasks was to produce a glossary of terms relevant to the management of VMEs (SC ... recommended adoption of six key terms. Other VME relevant terms were also discussed but referred to WG-FSA (WG ...
Meeting Document : WG-FSA-10/28 : Author(s): B.R. Sharp and S.J. Parker (New Zealand)
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Summary of data collected by Japan and South Africa in Subarea 48.6 between 2013 and 2015, and other statistics available for assessment of Dissostichus spp. in Subarea 48.6.
Abstract: The end of the 2014/15 season will see the completion of the third year of the multi ... report presented at WG-SAM-15 (WG-SAM-15/50) has not been updated for WG-FSA as neither of the vessels ... undertaking the research returned to the study area over the winter. WG-SAM-15 requested that a summary of the ... such as distribution of effort, catch and tag releases and recaptures are already available in ...
Meeting Document : WG-FSA-15/66 : Author(s): R.W. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa)
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Models of Antarctic marine ecosystems in support of CCAMLR and IWC: background
Abstract: Ecosystem models are being developed to explore a range of issues globally. This paper ... to the use of ecosystem models in CCAMLR and the IWC and a history of the developmental work in those ... organisations. It also provides an outline of the nature of modelling for these purposes and the general issues ... CCAMLR and the IWC. Author(s): Constable, A. Title: Models of Antarctic marine ecosystems in support of ...
Meeting Document : CCAMLR-IWC-WS-08/03 : Author(s): Constable, A.
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Revision of the precautionary approach to ensuring the rational use of the living resource (Dissostichus eleginoides) in Subarea 48.3 (full version)
. This paper reviews the long-term decline in the size structure of Patagonian toothfish (Dissostichus ... the start of the 2000s until now, longline fishing in the South Georgia area has targeted immature ... fish smaller than 100 cm. The issue of non-rational use of the Patagonian toothfish stock in Subarea ... 48.3 is examined. Author(s): Delegation of the Russian Federation Title: Revision of the ...
Meeting Document : WG-FSA-2019/40 : Author(s): Delegation of the Russian Federation
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OBSERVED RECOVERY OF NOTOTHENIA ROSSII AND FURTHER DECLINE OF GOBIONOTOTHEN GIBBERIFRONS IN SCIENTIFIC CATCHES AT POTTER COVE, SOUTH SHETLAND ISLANDS
Abstract: The results of the current monitoring program of fjord fish at Potter Cove, South ... Shetland Island are updated, showing a recovery of Notothenia rossii to levels comparable to those observed ... in and the disappearance of Gobionotothen gibberifrons from the catches since 2007. Author(s): E ... . Marschoff, E. Barrera-Oro, N. Alescio and E. Moreira (Argentina) Title: OBSERVED RECOVERY OF NOTOTHENIA ...
Meeting Document : WG-FSA-09/31 : Author(s): E. Marschoff, E. Barrera-Oro, N. Alescio and E. Moreira (Argentina)