Résultats de la recherche
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Revised estimates of yield for Electrona carlsbergi based on a generalised version of the CCAMLR krill yield model
widely varying recruitment patterns, overestimation of the abundance of the stock and age of the most ... recent survey. These problems are addressed in this paper by using stock projections to assess the ... probabilities of the stock of Electrona carlsbergi becoming depleted over a 20 year period. These projections ... have been undertaken using a generalised version of the CCAMLR Krill Yield Model. This is appropriate ...
Meeting Document : WG-FSA-94/21 : Auteur(s): A.J. Constable and W.K. de la Mare (Australia)
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Temporal variability in Antarctic marine ecosystems: periodic fluctuations in the phocid seals
aspect of their biology: the age structure of crabeater seals (Lobodon carcinophagus) around the ... and with the Southern Oscillation Index (SOI). All of the seal data sets showed evidence of cyclical ... behavior when demodulated at a period of 5 yr. The Weddell seals were generally in phase with the SOI since ... the Weddell series began in 1970. The leopard seals and SOI were in phase in the 1960’s, but ...
Meeting Document : WG-CEMP-91/13 : Auteur(s): J.W. Testa, G. Oehlert, D.G. Ainley, J.L. Bengtson, D.B. Siniff, R.M. Laws and D. Rounsevell (USA)
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Bioregionalisation and spatial ecosystem processes in the Ross Sea region
Abstract: Since 2005, the Commission for the Conservation of Antarctic Marine Living Resources ... 2009 the CCAMLR Scientific Committee agreed a series of milestones to achieve a representative network ... of MPAs in the CCAMLR Area by 2012. New Zealand has been an active contributor to the CCAMLR spatial ... management planning process, and has declared its interest in progressing spatial marine protection in the ...
Meeting Document : WG-EMM-10/30 : Auteur(s): B.R. Sharp, S.J. Parker, M.H. Pinkerton (New Zealand) (lead authors) also B.B. Breen, V. Cummings, A. Dunn (New Zealand), S.M. Grant (United Kingdom), S.M. Hanchet, H.J.R. Keys (New Zealand), S.J. Lockhart (USA), P. O’B. Lyver, R.L. O’Driscoll, M.J.M. Williams, P.R. Wilson (New Zealand)
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Using mark-recapture and catch-age data to estimate fishing and natural mortality for the Patagonian toothfish at South Georgia
natural mortality, and integrates catch-at-age data into the estimation model, to aid in distinguishing ... between natural and fishing mortality. The model essentially follows tagged cohorts, with the estimated ... parameters being the fishing and natural mortality vectors for that particular cohort. The model was tested ... analysed with the model. The ages covered by the analysed cohorts ranged from 5 to 13. In the model runs ...
Meeting Document : WG-FSA-SAM-06/06 : Auteur(s): R.M. Hillary and D.J. Agnew (United Kingdom)
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Practical options for developing feedback management for the krill fishery in Subarea 48.2
might facilitate the development of feedback management procedures for the krill fishery in Area 48. In ... reviewing the state of ecological knowledge for Subarea 48.2, we conclude that movement towards Stage 2 (in ... the Staged approach advocated by WG-EMM) is highly improbable based on the current level of ... information available for Subarea 48.2. We suggest that there is an urgent need to improve the ecological ...
Meeting Document : WG-EMM-14/04 : Auteur(s): P. Trathan (United Kingdom), M. Santos (Argentina) and O.R. Godø (Norway)
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Plan of research program of the Ukraine in Subarea 48.2 in 2017 (third season)
Abstract: The third year research plan of Ukraine in subarea 48.2 by the fishing vessel SIMEIZ is ... provided. The survey design remains the same as in the second (2016) year. Ukraine proposes to divide the ... stock (the catch limit) in the researched area on two blocks – Northern and Southern, in order to reach ... maximum coverage of the subarea by the research stations. Author(s): L. Pshenichnov, S. Ajiumerov and D ...
Meeting Document : WG-SAM-16/23 : Auteur(s): L. Pshenichnov, S. Ajiumerov and D. Marichev
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High-resolution ocean modelling of the South Georgia and South Orkney Islands regions
Abstract: The marine ecosystem associated with the ocean shelves around South Georgia and the ... South Orkney Islands is highly productive, with a history of commercial exploitation. Many of the key ... oceanographic and ecological processes that determine the structure and functioning of this ecosystem operate ... numerical models. Here we describe the development of two regional ocean models that will be used to examine ...
Meeting Document : WG-EMM-16/15 : Auteur(s): E. Young, E. Murphy and P. Trathan
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Multiyear changes in distribution and abundance of Salpa thompsoni in the Western Antarctic Peninsula region
Abstract: The most common and widespread salp in the Southern Ocean is Salpa thompsoni. It is ... characterized by a circumpolar distribution and its appearance is clearly associated with the occurrence of the ... Antarctic Circumpolar Current (ACC). This area of the Southern Ocean is characterized by a relatively low ... productivity and high water temperature. In recent years the expansion of distribution range of this ...
Meeting Document : WG-EMM-16/75 : Auteur(s): A. Panasiuk, A. Słomska, J. Wawrzynek, M. Konik and A. Weydmann
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Revised plan of research program of the Ukraine in Subarea 48.2 in 2017 (third season)
Abstract: The third year research plan of Ukraine in subarea 48.2 by the fishing vessel SIMEIZ is ... provided. The survey design remains the same as in the second (2016) year. Ukraine proposes to divide the ... stock (the catch limit) in the researched area on two blocks – Northern and Southern, in order to reach ... maximum coverage of the subarea by the research stations. Author(s): Delegation of Ukraine Title ...
Meeting Document : WG-FSA-16/49 : Auteur(s): Delegation of Ukraine
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Spatial distribution and swarm characteristics of Antarctic krill around the South Shetland Islands
Abstract: The spatial distribution and swarm characteristics of Antarctic krill were studied ... using the swarm-based method established in SG-ASAM-17. Acoustic data were collected from the FV Fu Rong ... 2013, March 2015, January 2016 and February 2018 around South Shetland Islands. The swarm ... , thickness and length of swarms were estimated from the 120kHz data. The full spatial distributions of ...
Meeting Document : WG-EMM-18/42 : Auteur(s): X. Yu, X. Wang and X. Zhao