Résultats de la recherche
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Competition-induced starvation drives large-scale population cycles in Antarctic krill
Abstract: Antarctic krill (Euphausia superba)—one of the most abundant animal species on Earth ... . Previous studies have postulated that the krill cycle is induced by periodic climatological factors, but ... , we identify intraspecific competition for food as the main driver of the krill cycle, while external ... that the cycle amplitude increases with reduction of krill loss rates. Thus, a decline of apex ...
Meeting Document : WG-EMM-18/P05 : Auteur(s): A.B. Ryabov, A.M. de Roos, B. Meyer, S. Kawaguchi and B. Blasius
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Foraging strategies of chinstrap penguins at Signy Island, Antarctica: importance of benthic feeding on Antarctic krill
Abstract: Chinstrap penguins Pygoscelis antarctica are one of the major consumers of Antarctic ... krill Euphausia superba in the Southern Ocean. To examine their foraging strategy, we studied foraging ... trips). The diving depths of our study birds were much deeper (to 179 m) than previous studies on this ... maximum depth, the typical characteristics of benthic dives. These benthic-type dives were more abundant ...
Meeting Document : WG-EMM-03/37 : Auteur(s): A. Takahashi (Japan), M.J. Dunn, P.N. Trathan (United Kingdom), K. Sato, Y. Naito (Japan), J.P. Croxall (United Kingdom)
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MULTIPLE INDICATORS SUGGEST A STRONG ECOSYSTEM ANOMALY AT SOUTH GEORGIA IN 2009
Abstract: The marine pelagic system around South Georgia is characterised by considerable inter ... local oceanographic and atmospheric conditions. Much of the observed variability in various fitness ... metrics for birds, seals and fish seems to be connected with the availability of Antarctic krill ... , Euphausia superba, which is a major prey species for many vertebrate populations at South Georgia. The ...
Meeting Document : WG-EMM-09/23 : Auteur(s): S. Hill, M. Belchier, M. Collins, S. Fielding, E. Murphy, P. Trathan, H. Venables and C. Waluda (United Kingdom)
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UPDATED PRELIMINARY RESULTS OF AN ECOLOGICAL RISK ASSESSMENT FOR SEABIRDS AND MARINE MAMMALS WITH RISK OF FISHERIES INTERACTIONS
identify areas or species requiring additional management or monitoring. Our study indicated that the risk ... particularly strong overlap between fishing effort and species ranges. We tested the sensitivity of the ... adding a factor of population. We found the outcomes of the PSA analyses were robust to these effects ... . However, adult survival rates did influence the rankings, and were identified as a key parameter requiring ...
Meeting Document : WG-FSA-08/51 : Auteur(s): S. Waugh, D. Filippi, N. Walker (New Zealand) and D.S. Kirby
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Among-year variation in growth of Antarctic krill Euphausia superba based on length-frequency data
Abstract: Understanding the temporal variability in vital rates (e.g. growth and survivorship) of ... estimating growth from observed length-frequency samples by combining kernel density estimates of the length ... -frequency distribution and the von Bertalanffy growth function. Our approach is conceptually straightforward ... and easy to implement. We applied the methods to Antarctic krill Euphausia superba collected from the ...
Meeting Document : WG-EMM-13/P01 : Auteur(s): A.O. Shelton, D. Kinzey, C. Reiss, S. Munch, G. Watters and M. Mangel (USA)
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KRILLBASE: a multinational, circumpolar database of abundance of Antarctic krill and salps
webs and biogeochemical cycles. Sustainably managing the fishery for Antarctic krill against a backdrop ... data have been collected on the abundance of the two taxa from net sampling surveys since 1926, but ... solitaries and species combined), with associated environmental information, metadata and documentation. The ... led to a series of papers since 2004 that illustrate some of its potential uses. The latest version ...
Meeting Document : SC-CAMLR-XXXV/BG/24 Rev. 1 : Auteur(s): A. Atkinson, S. Hill, H. Peat, R. Downie and L. Gerrish
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Implanted identification tags in penguins: implantation methods, tag reliability and long-term effects (draft version)
site may also compromise survival in some individuals. These risk factors could limit the use of ... identifying individual penguins by both manual and automated means. We have found the survival of tagged ... problems associated with the use of implanted devices. The transponder removed from one bird had developed ... a slimy biofilm harbouring potentially pathogenic organisms incorporated at the time of implantation ...
Meeting Document : WG-EMM-Methods-96/08 : Auteur(s): Kerry, K., Clarke, J.
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REPORT ON TRANSHIPMENT OF KRILL IN 2009
Abstract: Report on transhipment of krill in 2009 Delegation of Japan Abstract: According to the ... in the CCAMLR Convention Area in 2009, as a background paper for CCAMLR annual meeting to be held in ... October 2010. Explanation: According to the Conservation Measure 10-09 “Notification system for ... transshipments within the Convention Area”, especially in accordance with the paragraph 6 of the Measure, Japan ...
Meeting Document : CCAMLR-XXIX/BG/05 : Auteur(s): Delegation of Japan
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Archive des rapports de pêcheries
This page provides an archive of previous Fishery Reports. The most current Fishery Reports are ... available separately. Fishery Reports present the status and management of the fisheries in the CAMLR ... Convention Area and are published annually. The data is reviewed by CCAMLR's expert working groups using ... detailed data from the fisheries and fishery surveys, and the CCAMLR Scheme of International Scientific ...
Page : Site Section: Publications
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ZSPA et ZSGA
designated under the Antarctic Treaty as areas of special scientific or biological significance. The ... Secretariat of the Antarctic Treaty manages a database on the locations of ASPAs and ASMAs, and information on ... their management plans and purposes for designation. The location of ASPAs and ASMAs are shown as a ... layer on the CCAMLR GIS. ...
Page : Site Section: Data