Résultats de la recherche
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Potential interactions between wandering albatrosses and Dissostichus eleginoides fisheries at South Georgia
March through mid-May birds of both sexes spend most of their time at sea over the South Georgia ... Abstract: Breeding wandering albatrosses Diomedea exulans at South Georgia have a relatively low ... level of potential risk of interaction with Patagonian toothfish Dissostichus eleginoides longline ... fisheries at South Georgia between late November through February and between late May and October. From ...
Meeting Document : WG-FSA-95/43 : Auteur(s): Prince, P.A., Croxall, J.P.
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Galindez Island gentoo penguin (Pygoscelis papua) colonies at GAI CEMP site population behaviour/dynamics in the 2018/19 season
during 2018-19 season. The detailed observation of birds arrival, nesting, hatch and crèche has been ... provided in two colonies at GAI CEMP site at Galindez Island nearby the Vernadsky station. We inform on the ... results of visual survey of penguin population and penguin count. During the 2018/19 season biologist ... winterer at Vernadsky station at Galindez Island, provided continuous observations every day/each five days ...
Meeting Document : WG-EMM-2019/60 : Auteur(s): P. Khoetsky, A. Dzhulai, G. Milinevsky, I. Dykyy, E. Dykyi, I. Parnikoza and L. Pshenichnov
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CEMP cameras data validation experiment at the Galindez Island gentoo colonies
time-lapse cameras of the CEMP camera monitoring project of CCAMLR at Galindez Island gentoo colonies ... at the each of three test sites. Author(s): A. Dzhulay, V. Smagol, G. Milinevsky, I. Dykyy, A. Simon ... Abstract: We inform on the results of the data validation experiment provided for pictures from ... . During the 2017-2018 season biologists winterers at Vernadsky station, situated at Galindez Island ...
Meeting Document : SC-CAMLR-XXXVII/BG/20 : Auteur(s): A. Dzhulay, V. Smagol, G. Milinevsky, I. Dykyy, A. Simon, M. Telipska, E. Dykyy, L. Pshenichnov and A. Grytsai
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Foraging partitioning between giant petrels Macronectes spp. and its relationship with breeding population changes at Bird Island, South Georgia
species of giant petrels, Macronectes halli and M.giganteus, breeding sympatrically at Bird Island (South ... ref1ected in their recent population increase at South Georgia. Foraging areas of giant petrels overlapped ... Abstract: We tracked by satellite the foraging trips of males and females of the two sibling ... Georgia, Antarctica), during the incubation period (November-December). Size of the activity range as well ...
Meeting Document : WG-FSA-99/39 : Auteur(s): J. González-Solís, J.P. Croxall and A.G. Wood (United Kingdom)
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A updated population status model for the Patagonian toothfish, Dissostichus eleginoides, at Kerguelen Islands (Division 58.5.1) using CASAL
Abstract: A stock assessment of the Patagonian toothfish (Dissostichus eleginoides) at Kerguelen ... , standardized CPUE of commercial fisheries, tag releases and recoveries by length bin, commercial catch-at ... integrated using the effective sample sizes calculated at the level of each haul. An iteratively estimated ... of fishing vessels (trawlers, longliners). The fishing zone for the longliners is divided into four ...
Meeting Document : WG-FSA-12/09 : Auteur(s): A. Rélot-Stirnemann (France)
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Oil, marine debris and fishing gear associated with seabirds at Bird Island, South Georgia 1995/96
Abstract: In the third year of standardised recording of oil, fishing gear and marine debris at ... packaging band; another (uncut) band was found at a nest of a northern giant petrel. Parts of fishing gear ... albatrosses (one bird impaled with a long-line hook, another hook found at a nest) and wandering albatrosses ... hooks and lines regurgitated beside nests). Levels of plastic debris in fishing gear associated with ...
Meeting Document : SC-CAMLR-XV/BG/04 : Auteur(s): Delegation of the United Kingdom
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Problems in estimating population length at age from commercial catches, the Patagonian toothfish as an example
Abstract: Age based fishery population models require information on size at age of the fished ... commercial catches. This information does not necessarily reflect the size at age of the fished population ... example, a method is developed to estimate size at age of the population using information collected from ... population and the commercial catch. Age-length keys can be produced by standardised random sampling of the ...
Meeting Document : WG-FSA-01/17 : Auteur(s): I. Everson (United Kingdom)
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Krill length and age at maturity
calculate length and age at maturity for the Antarctic krill Euphausia superba. L50 values of 34.62 to 35.90 ... identical for krill. Comparisons with length at age data show that females mature in the third year of the ... later at a length between L50 = 43.33 and 43.79 mm. Length at maturity, and length at first spawning are ... age at maturity Approval: Approved ...
Meeting Document : WG-KRILL-93/40 : Auteur(s): V. Siegel (Germany) and V. Loeb (USA)
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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 ... of predators at temporal scales not available using conventional (i.e. ship based) sampling methods ... growth and mortality in generating the high amplitude of variability in krill abundance at South Georgia ... frequently detected in the response of upper-trophic level predators. Analysis of the changes in the ...
Meeting Document : WG-EMM-04/63 : Auteur(s): K. Reid, E.J. Murphy, J.P. Croxall and P.N. Trathan (United Kingdom)
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Marine debris and fishing gear associated with seabirds at Bird Island, South Georgia, 1994/95
of the very low breeding numbers of mollymawks at Bird Island in 1994/1995 and, second, because the ... recording year at Bird Island. Author(s): Delegation of the United Kingdom Title: Marine debris and ... Abstract: This report describes and quantifies the occurrence of marine debris and fishing gear ... number of plastic debris items and fishing hooks and lines found. Although this result is encouraging ...
Meeting Document : SC-CAMLR-XIV/BG/09 : Auteur(s): Delegation of the United Kingdom