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Penguin demography and winter distributions in the Antarctic Peninsula region
Abstract: Our long-term seabird research at Admiralty Bay has documented annual variability in ... physical processes to their effects on dependent predators in the Southern Ocean. Our most recent results ... present a conceptual model linking increasing temperatures and decreasing sea ice cover in the Antarctic ... Peninsula region to declines in krill and penguin populations. Winter temperatures in the Antarctic ...
Meeting Document : WG-EMM-01/32 : Автор(ы): W. Trivelpiece and S. Trivelpiece (USA)
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Interannual variation in the autumn diet of the gentoo penguin Pygoscelis papua at Laurie Island, Antarctica
migrant adults were sampled during 1993, 1995 and 1996. Fish were the most important prey by mass in 1995 ... (81.1%) and 1996 (60.5%) whereas crustaceans predominated in 1993 (70% by mass). Euphausia superba was ... largely the most important prey among the eleven crustacean taxa identified in the samples. Among fish ... , species of the family Nototheniidae predominated in the diet with G. gibberifrons as the most important ...
Meeting Document : WG-EMM-99/19 : Автор(ы): N. Coria, M. Libertelli, R. Casaux and C. Darrieu (Argentina)
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Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 1998–1999
Abstract: Longline fishing for Patagonian toothfish Dissostichus eleginoides in the South African ... Exclusive Economic Zone around the Prince Edward Islands commenced in 1996. This paper summarises seabird ... % more than the number of hooks set in 1997-98, but only 79 seabirds (150/0 of the total killed in 1997 ... birds per 1000 hooks, compared with 0.289 in 1996-97 and 0.117 in 1997-98. Comparisons between years for ...
Meeting Document : WG-FSA-99/42 Rev. 1 : Автор(ы): P.G. Ryan and B.P. Watkins (South Africa)
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DEFINING TAG RATES AND TACS TO OBTAIN SUITABLY PRECISE ABUNDANCE ESTIMATES FOR NEW AND EXPLORATORY FISHERIES IN THE CCAMLR CONVENTION AREA
catches (TACs) that would be expected to yield a pre-specified precision in a resultant abundance estimate ... formula that gives the expected coefficient of variation of the abundance estimate in terms of the number ... of releases and recaptures, which can in turn be expressed in terms of the tagging rate per tonne ... be extremely useful in terms of defining suitable catch levels and tagging rates required to obtain a ...
Meeting Document : WG-SAM-08/06 : Автор(ы): R.M. Hillary (UK)
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Consumption of krill by minke whales in Areas IV and V of the Antarctic
(Balaenoptera acutorostrata) in Areas IV and V of the Antarctic was estimated from diurnal change in the ... Whale Research Program Under Special Permit in the Antarctic) data. Estimates of the daily food ... summer in Areas IV and V were 14.7- 17.8 x 105 t and 63.2- 77.0 x 105 t, respectively. The values in Area ... IV were equivalent to roughly one- fourth of a total estimate biomass of krill in Area IV ...
Meeting Document : WG-EMM-97/17 : Автор(ы): Fujise, Y., Tamura, T., Ichii, T.
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Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1993 winter and 1993/94 pup-rearing season
Abstract: Surveys of Antarctic fur seals entangled in man-made marine debris were carried out for ... the fourth consecutive winter and sixth consecutive summer at Bird Island, South Georgia. In the 1993 ... in 1990 and 1991. Nearly all animals were juveniles, half with severe injuries and the proportion of ... females (40%) was the highest yet reported. The proportion of animals entangled in packaging bands was the ...
Meeting Document : SC-CAMLR-XIII/BG/03 : Автор(ы): Delegation of United Kingdom
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Modelling growth and reproduction of Antarctic krill: implications of spatial and temporal trends in temperature and food for ecosystem-based management of krill fisheries
Abstract: Errors in the growth model used in stock assessments of Antarctic krill, specifically ... higher rates of growth than occur in reality, could inadvertantly lead to over-exploitation of the krill ... generally applied under spatially and temporally varying conditions. In the context of assessments of ... precautionary yield for krill in CCAMLR, we recommend that this new model be incorporated into those assessments ...
Meeting Document : WG-EMM-12/38 : Автор(ы): A.J. Constable and S. Kawaguchi (Australia)
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Proposal for a SCOR Working Group to identify Ecosystem Essential Ocean Variables for measuring change in the biological properties of marine ecosystems
for measuring change in the biological properties of marine ecosystems” was developed by members of ... the Southern Ocean Observing System (SOOS) Science Steering Committee in conjuction with discussions ... for linking a number of groups working on this issue, leading to a symposium in 2016. The proposal is ... detailed in this paper. It is recommended that the Scientific Committee of CCAMLR become involved in this ...
Meeting Document : WG-EMM-12/45 : Автор(ы): A. Constable (Australia)
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Population assessment of Patagonian toothfish in Subarea 48.4
Abstract: This paper presents an update of the assessment of toothfish (Dissostichus spp.) in ... D. eleginoides in the northern region and a simple Petersen biomass estimate derived for D ... . eleginoides and D. mawsoni in the southern region. The CASAL model structure used to assess the stock in 2011 ... tonnes and B 2012 /B 0 at around 88%. Sustainable yield, calculated in accordance with the CCAMLR ...
Meeting Document : WG-FSA-12/36 : Автор(ы): R. Scott (United Kingdom)
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A candidate process for managing the krill fishery at a local scale for krill predators, particularly in the early phases of the development of the krill fishery
Abstract: In this paper, we develop a candidate management system for the krill fishery suitable ... for achieving objectives for krill and its predators in local areas. We also indicate how this ... management system can be made operational in the early phases of a fishery in a local area, which can then be ... enhanced as the fishery develops, including testing future management procedures and in adapting them to a ...
Meeting Document : WG-EMM-15/55 Rev. 1 : Автор(ы): A. Constable, S. Kawaguchi, C. Southwell, L. Emmerson, W. de la Mare, P. Ziegler, D. Welsford and J. Melbourne-Thomas (Australia)
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