Resultados de la búsqueda
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Are penguins and seals in competition for Antarctic krill at South Georgia?
, respectively, the main mammal and bird consumers of Antarctic krill (Euphausia superba). In recent years the ... population of fur seals has increased whereas that of macaroni penguins has declined. Both species feed on ... krill of similar size ranges, dive to similar depths and are restricted in their foraging range at least ... population at South Georgia may have resulted in greater competition for the prey of macaroni penguins ...
Meeting Document : WG-EMM-02/22 : Autor(es): K.E. Barlow, I.L. Boyd, J.P. Croxall, K. Reid, U.J. Staniland and A.S. Brierley (United Kingdom)
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Vessel notification
Abstract: A feasibility study of a modified NAFO ‘Hail’ System which requires that CCAMLR Flag ... States notify CCAMLR of the intention of their vessels to enter, exit, or move between subareas and/or ... divisions of the Convention Area, was carried out to assess how such a system might strengthen the CCAMLR ... System of Inspection. The study has found that the modified Hail system could strengthen the System of ...
Meeting Document : CCAMLR-XIV/13 : Autor(es): Secretariat
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Avances en el Proceso de Designación de un Área Marina Protegida en el Dominio 1
Abstract: Marine Protected Areas (MPAs) have been on the agenda of the Antarctic Treaty System ... since at least 2005. Since then, various efforts have been made with the aim of conserving Antarctic ... marine living resources. In the current context of climate change, the Antarctic Peninsula and Southern ... Scotia Arc (Domain 1) areas are particularly important, since they are one of the regions of the planet ...
Meeting Document : SC-CAMLR-XXXV/02 : Autor(es): Delegaciones de Argentina y Chile
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Krill population trends
of sources: from net surveys (the longest historical series of available date), from acoustic surveys ... , from fisheries data and from the distribution of krill predators. Each of these forms of data ... collection has its own biases and limitations and our current understanding of krill distribution and ... abundance comes from utilising the various forms of data to the maximum extent possible. Time series data ...
Meeting Document : CCAMLR-IWC-WS-08/11 : Autor(es): Tarling, G., Watkins, J., Quetin, L., Reiss, C., Atkinson, A., Ross, R., Pakhomov, E., Kawaguchi, S., Nicol, S., Siegel, V.
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Informe de avance sobre los fundamentos científicos para el establecimiento de un AMP de la CCRVMA en el Mar Weddell (Antártida)
Abstract: With this working paper the Delegation of Germany calls attention to the background ... evaluation of marine protected areas (MPAs) in the Weddell Sea. At present the background document presents a ... contents and structure of the document reflect also its main objectives, i.e. (i) to set out the general ... background and context of the establishment of MPAs, (ii) to describe the boundaries of the Weddell Sea MPA ...
Meeting Document : SC-CAMLR-XXXIII/08 : Autor(es): Delegation of Germany
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Beach debris survey, Main Bay, Bird Island, South Georgia, 2002/03
Abstract: During the thirteenth year of standardised beach surveys of man-made debris at Bird ... Island, South Georgia, a total of 183 items was collected. This represents a 5.0% decrease on the total ... recorded in 2001/02 and the lowest levels of beach debris during summer since the first year of recording ... in 1990/91. The distribution of debris between summer and winter was similar to the previous year ...
Meeting Document : SC-CAMLR-XXIII/BG/13 : Autor(es): Delegation of the United Kingdom
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Monitoring krill population variability using seabirds and seals at South Georgia – new samplers provide new insights
distribution and abundance of a single dominant zooplankton species, Antarctic krill Euphausia superba. At ... frequently detected in the response of upper-trophic level predators. Analysis of the changes in the ... population size structure of krill in the diet of Antarctic fur seals Arctocephalus gazella, particularly ... associated with periods of low krill biomass, has shown that the population dynamics of krill is a major ...
Meeting Document : WG-EMM-04/63 : Autor(es): K. Reid, E.J. Murphy, J.P. Croxall and P.N. Trathan (United Kingdom)
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Reproduction in Antarctic notothenioid fish - a review
although spawning is likely to take place annually. However, part of the populations of Champsocephalus ... gunnari in the Atlantic Ocean sector do not spawn each year. Gonadosomatic index (GSI) of females is 15–40 ... % at spawning. Apart from a few nototheniid species the GSI of males is much less and typi6dlly only 15 ... –20% of that of females. Length at first spawning may be from 55% of Lmax onwards, but in many species ...
Meeting Document : SC-CAMLR-X/BG/12 : Autor(es): Delegation of Germany
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Research plan for toothfish in Divisions 58.4.4a and b by Shinsei Maru No. 3 in 2011/12
2010/11 fishing season with the aims of providing the data required for assessments of the population ... structure, size, movement and growth of Dissostichus spp. in the centered area of Division 58.4.4 a & b ... . In the 2010/11 a total of 189 D. eleginoides were tagged and released in SSRUs B and C. Four tagged D ... . eleginoides, of which two fish were tagged and released in SSRU C during the 2007/08 and 2009/10 preliminary ...
Meeting Document : WG-SAM-11/07 : Autor(es): Delegation of Japan
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Revised input parameters and implications for the Antarctic toothfish (Dissostichus mawsoni) stock assessment in Subareas 88.1 and 88.2
Abstract: In this paper, we address a number of aspects of the model inputs and parameters of the ... runs that investigate the sensitivity of the 2006 stock assessment to changes in these model inputs and ... parameters. Tree-regression methods were used to investigate the areal structure of the length distribution ... of Antarctic toothfish. While tree-regressions suggested strong evidence of a high degree of small ...
Meeting Document : WG-SAM-07/6 : Autor(es): A. Dunn and S.M. Hanchet (New Zealand)