Resultados de la búsqueda
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Age determination of the Antarctic fishes Champsocephalus gunnari and Notothenia rossii from South Georgia
necessity for an errorless estimation of age. Age determination can provide basic life history information ... 55 cm in 7 years. The lack of: the large size groups for Notothenia rossii may be indicative of over ... a fish's past history. As part of an effort to study Antarctic fish growth and population ... dynamics, investigations were performed on otoliths from the Antarctic fish Champsocephalus gunnari and ...
Meeting Document : SC-CAMLR-VI/BG/43 : Autor(es): R. Radtke (USA)
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CCAMLR 2000 revisited
%), depending on whether two- or three-frequencies are used for krill identification, respectively. At 38 kHz ... Abstract: The total abundance of krill in the Scotia Sea was estimated from an international ... Antarctic Treaty's Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) to ... revise the precautionary catch level for krill in the area from 1.5 to 4 Mt (SC-CAMLR, 2000). By ...
Meeting Document : WG-EMM-07/30 Rev. 1 : Autor(es): D.A. Demer, A.M. Cossio and C.S. Reiss (USA)
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Conservation of Antarctic pack-ice seals with increasing krill fishing and environmental change
impact on an already highly variable krill biomass, sea-ice loss of 66% has already occurred, and it ... could be an area of expansion for the fishery in the future. Uncertainty in krill and seal stock trends ... data to support a management based on specific conservation objectives for pack-ice seals. Author(s ... suitable seal habitat has declined between 21 and 28% over a 30 year period; krill density has potentially ...
Meeting Document : WS-MPA-11/24 : Autor(es): J. Forcada, P.N. Trathan (UK), P.L. Boveng (USA), I.L. Boyd (UK), D.P. Costa (USA), M. Fedak (UK), T.L. Rogers and C.J. Southwell (Australia)
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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 ... , we identify intraspecific competition for food as the main driver of the krill cycle, while external ... , with drastic consequences for the entire Antarctic ecosystem. Author(s): A.B. Ryabov, A.M. de Roos, B ... responsibility for releasing documents: Australia ...
Meeting Document : WG-EMM-18/P05 : Autor(es): A.B. Ryabov, A.M. de Roos, B. Meyer, S. Kawaguchi and B. Blasius
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Estimating nest-level phenology and reproductive success of colonial seabirds using time-lapse cameras
Abstract: We wish to draw the attention of Members to an online application of the R code ... ) implements the methods of the paper and provides summary outputs for direct input to CEMP A6b and A9 eforms ... . The abstract of the paper follows: Summary 1. Collecting spatially extensive data on phenology and ... reproductive success is important for seabird conservation and management, but can be logistically challenging ...
Meeting Document : WG-EMM-18/P01 : Autor(es): J.T. Hinke, A. Barbosa, L.M. Emmerson, T. Hart, M.A Juáres, M. Korczak-Abshire, G. Milinevsky, M. Santos, P.N. Trathan, G.M. Watters and C. Southwell
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Baited Remote Underwater Video (BRUV) system to monitor Antarctic toothfish distribution and abundance: pilot study results and future design
the tool and an approach for a robust sampling design, to obtain valid information on the relations ... Abstract: The Antarctic toothfish (Dissotichus mawsoni) is an ecologically and commercially ... relevant fish. Lacks of information on the species come from the traditional fishery-based methodology to ... collect samples, which does not cover all the areas of its distribution. Here we want to promote an ...
Meeting Document : WG-FSA-18/62 : Autor(es): D. Di Blasi, S. Canese, E. Carlig, L. Ghigliotti, S.J. Parker and M. Vacchi
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Recomendación de iniciar discusiones sobre la manera de planificar y organizar la labor de la Comisión para la Conservación de los Recursos Vivos Marinos Antárticos (CCRVMA)
Abstract: In recent years, there has been an increase in the number and complexity of issues that ... Commission initiate discussions on this topic, including by considering options for undertaking a priority ... options, including proposals for a priority-setting exercise, with a view to the Commission agreeing on a ... on a way to plan and organise the work of the Commission for the Conservation of Antarctic Marine ...
Meeting Document : CCAMLR-XXXIV/18 : Autor(es): Delegation of Australia
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The biology of the spiny icefish (Chaenodraco wilsoni Regan, 1914)
Antarctic Peninsula in the last 25- 30 years has been the spiny icefish Chaenodraco wilsoni Regan 1914. C ... . wilsoni has been exploited on a commercial scale from the late 1970’s to the end of the 1980’s off ... information on biological features and life history characteristics of C. wilsoni, based on research survey ... . Fish feed primarily on Antarctic krill (Euphausia superba) in the Antarctic Peninsula region and in the ...
Meeting Document : WG-FSA-07/P1 : Autor(es): K.-H. Kock, L.V. Pshenichnov, C.D. Jones, J. Gröger and R. Riehl. (Polar Biol., 31 (3): 381–393 (2007))
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Validation of age determination in Notothenia coriiceps, by means of a tag-recapture experiment at potter cover, South Shetland Islands
closely spaced sclerites zones, which corresponded with an elapse of two winter seasons. The comparative ... Shetland Islands, in successive years from 1989 to 1992, 9 were recaptured at the same site after periods ...
Meeting Document : WG-FSA-94/12 : Autor(es): E.R. Barrera-Oro and R.J. Casaux (Argentina)
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Biological characteristics of Antarctic fish stocks in the Southern Scotia Arc region
evidence for illegal fishing since the closure of the region some 10 years ago. Differences in length ... to 1989/90, with its heydays from 1977/78 to 1981/82. Except for Elephant Island, the state of fish ... catches in the first four years of the fishery and the possibility to sample these catches extensively ... Antarctic Marine Living Resources Programme carried out two extensive surveys around Elephant Island and the ...
Meeting Document : WG-FSA-99/16 : Autor(es): K.-H. Kock (Germany), C. Jones (USA) and S. Wilhelms (Germany)