Search results
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Entanglement in man-made debris of Antarctic fur seals at Bird Island, South Georgia
removed from 170) during the 142 days of the 1988-89 pup-rearing season at Bird Island, South Georgia ... . This represents at least 0.1% of the total Bird Island population and a minimum of 0.4% of animals in ... . Rodwell and I.P. Boyd (United Kingdom) Title: Entanglement in man-made debris of Antarctic fur seals at ... Abstract: Neck collars of man-made marine debris were seen on 208 Antarctic fur seals (and ...
Meeting Document : CCAMLR-VIII/BG/05 : Author(s): J.P. Croxall, S. Rodwell and I.P. Boyd (United Kingdom)
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Intra-archipelago moult dispersion of southern elephant seals at the Prince Edward Islands, southern Indian Ocean
. The attendance rate of the known individuals at their natal island during the annual moult was only 40 ... Abstract: During three summer surveys at Prince Edward Island (PEI), southern Indian Ocean (2001 ... all, 42 seals that had been tagged as weaned pups at their natal site were found on Marion Island (MI ... ), 38 of which could be individually identified by resighting their tag numbers. The majority of the MI ...
Meeting Document : WG-EMM-10/P16 : Author(s): W.C. Oosthuizen, M.N. Bester, P.J.N. de Bruyn and G.J.G. Hofmeyr
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RECENT TRENDS IN NUMBERS OF CROZET SHAGS BREEDING AT THE PRINCE EDWARD ISLANDS
Abstract: Numbers of Crozet shags Phalacrocorax [atriceps] melanogenis breeding at Marion Island ... influenced by food availability. Numbers of Crozet shags breeding at Prince Edward Island approximately ... Title: RECENT TRENDS IN NUMBERS OF CROZET SHAGS BREEDING AT THE PRINCE EDWARD ISLANDS Approval ... were similar trends in numbers breeding and breeding success of gentoo penguins Pygoscelis papua, which ...
Meeting Document : WG-EMM-10/P2 : Author(s): R.J.M. Crawford, P.G. Ryan, B.M. Dyer and L. Upfold
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Recent trends in numbers of Crozet shags breeding at the Prince Edward Islands
Abstract: Numbers of Crozet shags Phalacrocorax [atriceps] melanogenis breeding at Marion Island ... influenced by food availability. Numbers of Crozet shags breeding at Prince Edward Island approximately ... . Crawford, P.G. Ryan, B.M. Dyer and L. Upfold Title: Recent trends in numbers of Crozet shags breeding at ... were similar trends in numbers breeding and breeding success of gentoo penguins Pygoscelis papua, which ...
Meeting Document : WG-EMM-10/P02 : Author(s): R.J.M. Crawford, P.G. Ryan, B.M. Dyer and L. Upfold
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Target strengths of krill at 136 and 20 kHz
strengths of krill at 136 and 20 kHz Approval: Approved ... Abstract: Estimation of krill target strength was made by ensonification of encaged live krill ... and using trawling-acoustic method. Ensonification of encaged live krill. For aggregations with mean ... lengths in the range (45,50) mm the mean single-krill target strengths are in the range (-68,-69) dB at ...
Meeting Document : WG-KRILL-91/29 : Author(s): S.M. Kasatkina (USSR)
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The age structure and growth rate of Patagonian toothfish (Dissostichus eleginoides) at South Georgia
Abstract: New length-at – age data for South Georgia toothfish are presented from a range of ... are similar to values obtained in previous studies at South Georgia and other sub-Antarctic islands ... . Evidence for the separation of early year classes is presented along with mean sizes for each age class ... . Age length keys indicate that fish enter the fishery at 7 years and are fully recruited at between 10 ...
Meeting Document : WG-FSA-04/86 : Author(s): M. Belchier (United Kingdom)
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Foraging energetics of grey headed albatrosses Diomedea chrysostoma at Bird Island, South Georgia
Abstract: At-sea metabolism (C02 production) and water turnover of six breeding Grey-headed ... composition) was 1200 g d-1 or 50.4 W. At-sea metabolism (derived from a rate of CO2 production of 3.98 l h-1 ... Albatrosses Diomedea chrysostoma were measured, using the doubly labelled water method, at Bird Island, South ... Georgia. Mean food consumption (estimated from a water influx rate of 1.01 l d-1 and data on dietary ...
Meeting Document : SC-CAMLR-VII/BG/31 : Author(s): D.P. Costa (USA) and P.A. Prince (United Kingdom)
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Signy Island, South Orkney Islands, 2004/05
Abstract: The results of the ninth annual survey of entanglement of Antarctic fur seals at Signy ... ground. The incidence of entanglement at Signy Island, albeit very low, highlights the need for CCAMLR ... prohibiting the disposal of man-made debris at sea. Author(s): Delegation of the United Kingdom Title ... : Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Signy Island, South Orkney ...
Meeting Document : SC-CAMLR-XXIV/BG/18 : Author(s): Delegation of the United Kingdom
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Progress on the application of an age-structured production model fitted to commercial catch-rate and catch-at-length data to assess the toothfish (Dissostichus eleginoides) resource in the Prince Edward Island vicinity
allow the estimation of a selectivity-at-age function that decreases at larger ages. This is, in ... on the application of an age-structured production model fitted to commercial catch-rate and catch-at ... particular, to accommodate the view of the August 2003 meeting of the Subgroup on assessment methods that 0.2 ... yr-1 is likely the largest value of natural mortality M that is plausible for toothfish. Catch, catch ...
Meeting Document : WG-FSA-03/97 : Author(s): A. Brandão and D.S. Butterworth (South Africa)
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Population dynamics of black-browed and grey-headed albatrosses Diomedea melanophris and D. chrysostoma at Bird Island, South Georgia
Abstract: Population dynamics of Black-browed and Grey-headed Albatrosses were studied at Bird ... Albatross colonies decreased, at an average rate of 1.8% per annum. Although the total Black-browed ... Albatross population increased (at 0.8% pa.), 14 of the 23 colonies (including both study colonies ... ) decreased. Black-browed Albatrosses follow an annual breeding cycle, with over 80% of birds successful in ...
Meeting Document : SC-CAMLR-XII/BG/21 : Author(s): Delegation of United Kingdom