Resultados de la búsqueda
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Results from the 1998 bottom trawl survey of Elephant Island and the lower South Shetland Islands (Subarea 48.1)
, Chaenocephalus aceratus, Chionodraco rastrospinosus, and Lepidonotothen squamifrons. Estimates of length at ... Resources program in two major regions of the South Shetland Islands: Elephant Island and the lower South ... ogives were constructed for five species of finfish: Champsocephalus gunnari, Gobionotothen gibberifrons ... sexual maturity and length at first spawning are computed and compared with previous estimates and other ...
Meeting Document : WG-FSA-98/15 : Autor(es): C.D. Jones (USA), K.-H. Kock and S. Wilhelms (Germany)
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Abundance of Antarctic fur seals in the South Shetland Islands, Antarctica, during the 1986/87 austral summer
Abstract: A survey of Antarctic fur seals (Arctocephalus gazella) in the South Shetland Islands ... recovery and recolonization of rookery sites following 19th Century commercial exploitation. Eleven fur ... seal pupping sites were identified, some of which had not previously been reported. The largest pupping ... sites were at Telmo Island and Cape Shirreff, Livingston Island, and at the Seal Islands, Elephant ...
Meeting Document : WG-CEMP-90/41 : Autor(es): J.L Bengtson, L.M. Ferm (USA), T.J. Härkönen (Sweden) and B.S. Stewart (USA)
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Quantifying habitat use in satellite-tracked pelagic seabirds: application of kernel estimation to albatross locations
-rearing period of the breeding cycle at South Georgia. At this time the activity range of these two ... Abstract: We develop a new approach to quantifying habitat use within the foraging ranges of ... satellite-tracked seabirds. We applied kernel estimation techniques to 167 days (3738 locations) of data ... contrast, kernel estimation reveals that the main foraging areas of these two sympatric, congeneric species ...
Meeting Document : WG-EMM-01/67 : Autor(es): A.G. Wood (United Kingdom), B. Naef-Daenzer (Switzerland), P.A. Prince and J.P. Croxall (United Kingdom)
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An assessment of the mackerel icefish (Champsocephalus gunnari) off Heard Island
gunnari) populations at Heard Island are developed from the results of four scientific surveys conducted ... conducted at the end of the 1997 fishing season would allow for a catch limit on the Heard plateau of 900 ... Abstract: Assessments of the abundance and potential yield of mackerel icefish (Champsocephalus ... in 1990, 1992, 1993 and 1997. The assessments include estimates of all the parameters required, based ...
Meeting Document : WG-FSA-97/29 : Autor(es): de la Mare, W.K., Constable, A., Williams, R.
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2007 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity
updated to take account of further catch, GLM standardised CPUE and catch-at-length information that has ... 48.3 are used. The resource is estimated to be at about 37% of its average pre-exploitation level in ... Abstract: The ASPM assessment of the Prince Edward Islands toothfish resource by Brandão and ... terms of spawning biomass. It is suggested that it would be prudent to restrict annual legal catches to ...
Meeting Document : WG-FSA-07/34 Rev. 1 : Autor(es): A. Brandão and D.S. Butterworth (South Africa)
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Exchange of wandering albatrosses Diomedea exulans between the Prince Edward and Crozet Islands: implications for conservation
Abstract: Exchange of 61 wandering albatrosses Diomedea exulans has been recorded between the ... . Most movements of banded birds (57) have been westwards, from the Crozets to the Prince Edwards. In all ... , 18 fledglings banded at Possession Island, Crozets, have bred at Marion Island, Prince Edwards, but ... albatrosses of the two island groups form a metapopulation that ideally should be conserved as a single unit ...
Meeting Document : WG-EMM-03/41 : Autor(es): J. Cooper (South Africa) and H. Weimerskirch (France)
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Molecular and morphological identification of Macrourus species caught as by-catch in the toothfish longline fisheries in CCAMLR Subareas 48.3 and 48.4.
at South Georgia was compared with results of morphological identifications made by scientific ... Abstract: Genetic identification of grenadiers taken as bycatch in the toothfish longline fishery ... of Macrourus were identified genetically in the Southern Ocean and confirmed the presence of a ... Northern hemisphere species, M. berglax. There is a clear latitudinal separation of Macrourus species in ...
Meeting Document : WG-FSA-12/35 : Autor(es): E. Fitzcharles, K. Brigden, S. Gregory, M. Belchier and J. Brown (United Kingdom)
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On commercial significance of krill aggregations
with biomass density of at least 100 g/m2. This threshold value of krill commercial biomass ... estimated at 24 g/m2 (Boyd, 2001). As is evident from comparison of above density values, the fleet and ... of acoustic investigation obtained in the Soviet trawler operation areas in Subareas 48.1-48.4 were ... numbering 22000 hauls for the period of 1986-1990 and those from Ukrainian trawlers for the period of 2001 ...
Meeting Document : WG-EMM-03/31 : Autor(es): S.M. Kasatkina (Russia)
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DISTRIBUTION AND ABUNDANCE OF ANTARCTIC TOOTHFISH IN THE ROSS SEA
grounds. There are no reliable estimates of Antarctic toothfish abundance on the shelf at the current time ... toothfish at McMurdo Sound can occupy the entire water column, but the spatial and temporal extent of its ... Abstract: This report is a synthesis of mostly existing information which has been compiled for ... the purposes of addressing items on the FEMA 2 agenda. It summarises the management of the fishery ...
Meeting Document : WG-EMM-09/40 : Autor(es): S.M. Hanchet, S. Mormede and A. Dunn (New Zealand)
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The impact of the hake Merluccus spp. longline fishery off South Africa on Procellariiform seabirds
white-chinned petrels a year in South African waters at a rate of 0.44 birds per 1000 hooks. This ... shelf water of South Africa. Participants were required to record any birds caught, and these data were ... supplemented by ship-based observers on several vessels. Longlines are set at night, and the white-chinned ... during gear setting. Small numbers of great shearwaters Puffinus gravis and pintado petrels Daption ...
Meeting Document : WG-FSA-97/55 : Autor(es): Boix-Hinzen, C., Barnes, K.N., Ryan, P.G.