Résultats de la recherche
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Age-structured production model for toothfish at South Georgia
through the introduction of a new annual selectivity function, modelled as a unimodal, algebraically ... decaying function of age, with three easily interpretable parameters. When only a single selectivity curve ... reaches preset parameter boundaries. With one or two parameters of the selectivity estimated only once the ... the CPUE very closely. Convergence problems were noted for the highly parameterised versions of this ...
Meeting Document : WG-FSA-SAM-05/18 : Auteur(s): A. Payne, G.P. Kirkwood, R. Hillary and D.J. Agnew (United Kingdom)
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Phytoplankton standing stocks in relation to krill in Antarctic waters
, consisting of 32 diatoms and one dinoflagellete. Chaetoceros and Nitzschia spp. dominated the phytoplankton ... proliferation of certain phytoplankton species to bloom condition. Zooplankton biomass showed wide fluctuation ... to 2400 kg, the percentage of kill occurrence varied from 0 to 100% at stations sampled. The ... phytoplankton and zooplankton in the region of krill swarm however showed active feeding by the latter on these ...
Meeting Document : WG-EMM-98/34 : Auteur(s): X.N. Verlecar, R. Vijayakumar, F. Saldhana and L. Martins (India)
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Potential modelling structures for a two-area stock assessment model for Antarctic toothfish (Dissostichus mawsoni) in the Amundsen Sea Region
estimation of biomass in SSRUs 88.2C–G. Additional data resulting from a two-year research plan implemented ... in 2014/15 are expected to better inform the assessment of the entire stock including SSRUs 88.2C–G ... was annually-varying or density-dependent migration. Finally, using subsets of the data, or excluding ... once additional age and tag data have been collected in SSRUs 88.2C–H as part of the two-year research ...
Meeting Document : WG-SAM-15/49 : Auteur(s): S. Mormede, S.J. Parker, A. Dunn and S.M. Hanchet (New Zealand)
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On marine protected areas in the Southern Ocean
Abstract: The details on designation of marine protected areas in the CCAMLR region are ... of climate change influence on ecosystems. The MPA Questionnaire is proposed for consideration to ... make easier the understanding of the Southern Ocean MPA designation process and problems. Author(s ...
Meeting Document : WS-MPA-11/13 : Auteur(s): G.P. Milinevsky and S.B. Kovalonok (Ukraine)
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CEMP INDICES: 2008 UPDATE
indicator species collected by standard methods in the three Integrated Study Regions of the Convention Area ... . Each year the Secretariat updates the standardised index values and provides a summary of trends and ... seasons are being undertaken. There has been a general decline in the number of parameters submitted from ...
Meeting Document : WG-EMM-08/04 : Auteur(s): Secretariat
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Can we improve the Scientific Committee’s ability to provide unequivocal management advice on fish stocks in the Convention Area?
knowledge of the stocks and improve the Scientific Committee’s ability to provide less controversial ... management advoice. However, a level of uncertainty higher than in fish stock assessment in other parts of ...
Meeting Document : WG-FSA-90/25 : Auteur(s): Convener, Working Group on Fish Stock Assessment
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A new plan for pelagic ecological research within the US AMLR Program
(moorings and gliders) program of oceanographic and ecological observations and research to support the U.S ... of a ship-based research program, can reduce costs while still achieving NOAA’s mission in the ... : Content Approved Delegation responsibility for releasing documents: United States of America ...
Meeting Document : WG-EMM-17/04 : Auteur(s): C. Reiss and G. Watters
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Estimating seabird by-catch in CCAMLR longline fisheries
Abstract: After many years of close to zero incidental seabird mortality in the longline fishery ... 58.5.2. At the same time, concern has been expressed about the suitability of the method used to raise ... the observer data and to estimate total seabird mortality. Given the high profile of this issue in ...
Meeting Document : WG-FSA-17/50 : Auteur(s): C. Darby and K. Olsson
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Developing the risk assessment framework for the Antarctic krill fishery in Area 48
Abstract: Recognising that CM 51-07 is scheduled to lapse at the end of the 2020/2021 fishing ... season, we outline a plan of work to engage with the CCAMLR community to move towards refining the krill ... version of the risk assessment framework. Author(s): P. Trathan, V. Warwick-Evans, E. Young, S. Thorpe, E ...
Meeting Document : WS-SM-18/04 : Auteur(s): P. Trathan, V. Warwick-Evans, E. Young, S. Thorpe, E. Murphy, N. Kelly, S. Kawaguchi and D. Welsford
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Further information in relation to krill fisheries in the D1MPA process
further consideration of fishing activities were highlighted as needed to develop an agreed set of ... support of the D1MPA proposal, also including comments from the D1MPA Expert Group. Author(s): A. Capurro ... boundaries. This paper provides further information in relation to krill fisheries and the decisions taken in ...
Meeting Document : WS-SM-18/18 : Auteur(s): A. Capurro and M.M. Santos with contributions from the D1MPA Expert Group