Résultats de la recherche
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Conditions for the precise measurement of fish target strength in situ
studied and two indexes are introduced for this purpose. One is the number of fish in the effective ... obtained from one large same fish school in the eastern shelf of Bering sea during the intership ... Abstract: Conditions for precise measurement of in situ fish target strength (TS) are empirically ... reverberation volume which contributes echo formation at a certain instant and the other is the percentage of ...
Meeting Document : WG-Krill-94/35 : Auteur(s): K. Sawada and M. Furusawa (Japan), N.J. Williamson (USA)
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Status and trends of Adelie penguin populations in the Ross Sea region
Abstract: Aerial reconnaissance and photography were used in the Ross Sea sector of Antarctica to ... half the world population. Some rookeries were photographed in all, or most, of the seven seasons to ... study the pattern of natural fluctuations in Adé1ie populations, and comparisons have been made with ... and B.W. Thomas (New Zealand) Title: Status and trends of Adelie penguin populations in the Ross Sea ...
Meeting Document : WG-CEMP-92/23 : Auteur(s): R.H. Taylor, P.R. Wilson and B.W. Thomas (New Zealand)
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Recent increase and southern expansion of Adelie penguin populations in the Ross Sea, Antarctica, related to climatic warming
Abstract: The numbers of Adelie penguins Pygoscelis adeliae (Hombron and Jacquinot) in the Ross ... climatic variation in the McMurdo Sound region. We suggest that the dynamics of Adelie penguin populations ... may be very sensitive indicators of changes in the Antarctic climate. Published in: New Zealand ... increase and southern expansion of Adelie penguin populations in the Ross Sea, Antarctica, related to ...
Meeting Document : WG-CEMP-92/22 : Auteur(s): R.H. Taylor and P.R. Wilson (New Zealand)
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Development of a spatially-explicit minimum realistic model for Antarctic toothfish (Dissostichus mawsoni) and its main prey (Macrouridae and Channichthyidae) in the Ross Sea
of the nature of the interaction. Whilst this model is in a development stage, it provides a useful ... sampling of toothfish for diet analysis, and the monitoring of icefish and grenadier populations in SSRUs ... Abstract: To explore the potential effects of the toothfish fishery on the population dynamics of ... predation mortality (M2), in addition to fishing mortality (F) on all three species. The model suggests that ...
Meeting Document : WG-EMM-14/51 : Auteur(s): S. Mormede, M. Pinkerton, A. Dunn, S. Hanchet and S. Parker (New Zealand)
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Report of the UK groundfish survey at South Georgia (CCAMLR Subarea 48.3) in January 2015
Abstract: In January 2015 the UK undertook a bottom trawl survey of CCAMLR sub-Area 48.3 on the ... in the South East. Catches of juvenile Dissostichus eleginoides were dominated by fish of 43-48cm (TL ... coverage and encompassing depths between 108 and 352m. The overall biomass of mackerel icefish ... . Mackerel icefish density was low on the fishing grounds of the North West stratum but higher at the western ...
Meeting Document : WG-FSA-15/30 : Auteur(s): M. Belchier, S. Gregory, N. Fallon, J. McKenna, S. Hill, M. Soffker (United Kingdom), P. Lafite (South Africa) and L. Featherstone (United Kingdom)
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Revised research plan for the 2017/18 exploratory longline fishery of D. mawsoni in Subarea 48.6 by South Africa and Japan
Abstract: South Africa and Japan revised the next season’s (2017/18) research plan in Subarea ... extracts provided by the CCAMLR Secretariat on the 27th of July, 2017 were used. The estimated median stock ... sizes in research blocks 48.6_2E (southeast part of 48.6_2), 48.6_3, and 48.6_4 are 4864.30, 3132.55 ... were released in the most recent year as effective for the biomass estimation, except for 48.6_4 which ...
Meeting Document : WG-FSA-17/10 : Auteur(s): Delegations of Japan and South Africa
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Progress report of the CEMP Special Fund camera network in Subarea 48.1
report of the CEMP Special Fund camera network in Subarea 48.1 Microsoft Word File: emm-17-16r1.docx ... Abstract: We provide a brief update on the progress of our project “Establishing a CEMP Camera ... Network in Subarea 48.1”. The project was initiated with support from the CEMP Special Fund in 2014/15 ... . The project is now fully operational. In 2016/17 data were recovered from 50 cameras covering 3 ...
Meeting Document : WG-EMM-17/16 Rev. 1 : Auteur(s): J. Hinke, G. Watters, M. Santos, M. Korczak-Abshire, G. Milinevsky, V. Lytvynov, A. Barbosa, C. Southwell and L. Emmerson
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Distribution, abundance and acoustic properties of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea
community of top predators in the shelf waters of the Ross Sea. In spite of their abundance and important ... acoustic biomass of silverfish in the study area was 592 000 t (95% confidence interval 326 000–866 000 t ... : Distribution, abundance and acoustic properties of Antarctic silverfish (Pleuragramma antarcticum) in the Ross ... role in Antarctic food chains, very little is known of many ecological and biological aspects of this ...
Meeting Document : WG-FSA-10/P04 : Auteur(s): R.L. O’Driscoll, G.J. Macaulay, S. Gauthier, M. Pinkerton and S. Hanchet
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QUANTIFYING MOVEMENT BEHAVIOUR OF VESSELS IN THE ANTARCTIC KRILL FISHERY
behaviour of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed ... . Author(s): S. Kawaguchi and S.G. Candy Title: QUANTIFYING MOVEMENT BEHAVIOUR OF VESSELS IN THE ... Abstract: Ten years of recent finescale haul-by-haul krill data were used to characterize the ... longer distances moved between hauls in Area 48.1 compared to 48.2 and 48.3 reflecting the large number ...
Meeting Document : WG-EMM-09/P05 : Auteur(s): S. Kawaguchi and S.G. Candy
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Impacts of rising sea temperature on krill increase risks for predators in the Scotia Sea
effects of ocean warming on krill biomass were strongest in the northern Scotia Sea, with a ≥ 40% decline ... in the mass of individual krill. Projections also suggest a 25% chance that krill biomass will fall ... minimally realistic ecosystem model to examine how projected effects of ocean warming on the growth of ... , penguins, seals, and fish) in the Scotia Sea. We also investigated the potential to mitigate depletion risk ...
Meeting Document : WG-EMM-18/P02 : Auteur(s): E.S. Klein, S.L. Hill, J.T. Hinke, T. Phillips and G.M. Watters