Resultados de la búsqueda
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CASAL model evaluation incorporating the calculation of harvest rate for D. eleginoides at Division 58.4.4b
. Compared to the CASAL results reported in WG-SAM-2019/30, the MPD profiles show improvements under all ... Abstract: In order to achieve the milestone “1.5 Update CASAL model” of the ongoing research plan ... 58.4.4b were revised. Following WG-SAM-2019 suggestions (para 6.76 in the WG-SAM2019 report), we conducted ... (CAY and MAY) as defined in CASAL manual (Bull et. al. 2012) using each CASAL runs according to WG-SAM ...
Meeting Document : WG-FSA-2019/62 : Autor(es): T. Okuda and F. Massiot-Granier
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Beach debris survey, Main Bay, Bird Island, South Georgia, 2002/03
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 ... (3.6 kg) was a decrease of 1 kg since last year. There was a decrease in the proportion of nylon ... ) compared to previous years. The greatest proportion of debris (95 %) was miscellaneous debris. The ...
Meeting Document : SC-CAMLR-XXIII/BG/13 : Autor(es): Delegation of the United Kingdom
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Foraging partitioning between giant petrels Macronectes spp. and its relationship with breeding population changes at Bird Island, South Georgia
during the breeding season on fur seals, which have increased exponentially in recent years, may be ... females in both species. Sex differences agree with previous observations on diet and on attendance at ... may be reduced by the limited overlap in the activity range, with southern giant petrels foraging ... further south than northern giant petrels, suggesting some spatial partitioning in foraging areas. Male ...
Meeting Document : WG-FSA-99/39 : Autor(es): J. González-Solís, J.P. Croxall and A.G. Wood (United Kingdom)
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Diet overlap among top predators at the South Orkney Islands, Antarctica
variable diets. This variability may be explained by fluctuations in krill availability. In years when ... Abstract: In order to understand interspecific trophic relationships among top predators, we ... analyzed diet information on nine bird and two seal species collected in the austral summer from 1996 to ... fish, which increases the re-occurrence of these preys in the diets. Our samples suggest the recovery ...
Meeting Document : WG-EMM-18/04 : Autor(es): M.L. Bertolin and R. Casaux
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Leslie analyses of commercial snow crab trap data: a comparative study of catchability coefficients
Abstract: If we could determine the relationship between catch rates in a trap survey and ... historical Leslie analyses of commercial catch data obtained over several years and quantify the relationship ...
Meeting Document : WS-CRAB-93/13 : Autor(es): J.M. Hoenig, E.G. Dawe, D.M. Taylor, M. Eagles and J. Tremblay (USA)
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Population dynamics of black-browed and grey-headed albatrosses Diomedea melanophris and D. chrysostoma at Bird Island, South Georgia
Island, South Georgia for 17 consecutive years (1975-1991). Over this period almost all the Grey-headed ... ) decreased. Black-browed Albatrosses follow an annual breeding cycle, with over 80% of birds successful in ... rearing a chick and 75% of those failing to do so returning to breed the next year, 5- 10% of both ... categories delaying one further year (even when still paired). Grey-headed Albatrosses are essentially ...
Meeting Document : WG-CEMP-93/06 : Autor(es): P.A. Prince, P. Rothery, J.P. Croxall and A.G. Wood (United Kingdom)
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Dietary segregation of krill-eating South Georgia seabirds
success and information on diet in 5-10 other years suggest that in 1986 seabird diet and reproductive ... performance was indicative of a year of good availability of krill around South Georgia. In such circumstances ... period in 1986. For five species, Antarctic krill Euphausia superba was the main food (39-98% by mass ... , was different between all seabird species, reflecting some combination of differences in foraging ...
Meeting Document : WG-EMM-97/15 : Autor(es): Prince, P.A., Croxall, J.P., Reid, K.
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Streamlining the work of the Scientific Committee for the Conservation of Antarctic Marine Living Resources (SC-CAMLR)
Abstract: In recent years, the Scientific Committee has been dealing with a great diversity of ... its working groups and maybe workshops in mid-year, and a short meeting of the Scientific Committee ... at present. In our view, this stems from constraints on the way SC-CAMLR does work. In this paper ... , we describe these constraints and combine thoughts given to the CCAMLR Symposium in May 2015 on how ...
Meeting Document : WG-EMM-15/59 : Autor(es): G. Watters (USA), A. Constable and D. Welsford (Australia)
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The CAML/SCAR-MarBIN Biogeographic Atlas of the Southern Ocean
biodiversity hotspots. At the end of five years of extensive biodiversity exploration and assessment by the ... Census of Antarctic Marine Life (www.caml.aq), with 19 CAML-dedicated cruises in the whole Southern Ocean ... ) south of 40°S. The hard copy version in large format will be extended by a dynamic online version on the ...
Meeting Document : CCAMLR-XXX/BG/11 : Autor(es): Submitted by SCAR
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Can we use discriminant function analysis to sex penguins prior to calculating an index of a morphometric parameter?
Abstract: In sexually dimorphic species, morphometric parameters have separate distributions for ... determination, but uncertainty in sex ratios can lead to considerable Type I and Type II errors. Lack of ... knowledge about the sex ratio between years makes combining the data a very doubtful procedure and use of a ...
Meeting Document : WG-CEMP-92/11 : Autor(es): D.J. Agnew (Secretariat)