Résultats de la recherche
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Post-fledging and winter migration of Adélie penguins (Pygoscelis adeliae) in the Mawson region of east Antarctica
chick left Magnetic Island near Davis station (68°33'S, 77°54'E) in February 1995 and was ... fast-ice or in the pack-ice. Fledglings had travelled between 536 and 1931 km to the west of their ... -set to transmit intermittently for the first five months and one day in four thereafter. Adult birds ... movements over the winter months were closely related to those of sea-ice in the region. Ice motion patterns ...
Meeting Document : WG-EMM-02/47 : Auteur(s): J. Clarke and K. Kerry (Australia), C. Fowler (USA), R. Lawless, S. Eberhard and R. Murphy (Australia)
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Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 1997–1998
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 ... bycatch during the year July 1997-June 1998. Data on seabird bycatches were obtained from fishery ... is 13% more than the number of hooks reported set in 1996-97, but total effort probably declined ...
Meeting Document : WG-FSA-98/42 : Auteur(s): P.G. Ryan and M.G. Purves (South Africa)
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Models of tag shedding for double tagging as a function of time at liberty and approximate solutions for the single tagging model in CASAL
Abstract: The model of tag shedding implicit in CASAL is that of Kirkwood and Walker (KW) (1984 ... ) and Hillary et al. (2006) to apply the square of the individual tag loss annual rate in CASAL over ... a large sample of recaptures of fish released in the Heard and MacDonald Island (HIMI) (Division ... (GAM) was also fitted and is the most flexible in shape. The estimation method accounts for the fact ...
Meeting Document : WG-SAM-11/12 : Auteur(s): S.G. Candy (Australia)
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Sexual ratio of Dissostichus eleginoides from longlines samples: a partial indicator of reproductive migration in Subarea 48.3
and the third week of July 1996, in the subarea 48.3 shows that the sex ratio departs from the ... expected 1:l ratio being the females more abundant in the longline samples, except during May, when the ... bottom habitats, this finding suggests that: or the females remain in higher proportion in the habitat ... the longline fishing techniques, or both sexes rise in the water column for spawn. No one of these ...
Meeting Document : WG-FSA-96/44 : Auteur(s): Moreno, C.A., Guerra, J., Zuleta, A.
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Analysis of operating conditions of the fishing vessel in relation to the distribution, biological state and behaviour of Antarctic krill (a contribution to the development of a simulation model)
processing vessel producting krill meat. The vessel operated in the Commonwealth Sea, the Cosmonaut Sea and ... in twi Scotia Sea areas (off South Orkneys and off South Georgia) from February to June 1988. In all ... cause was tthe size composition of krill in the catches. Preference was given to larger krill. The ... density of krill in aggragtions usually remained at a high level and was a less important cause of area ...
Meeting Document : SC-CAMLR-VIII/BG/23 : Auteur(s): Delegation of USSR
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Update on the ‘Demersal interactions with marine benthos in the Australian EEZ of the Southern Ocean: an assessment of the vulnerability of benthic habitats to impact by demersal gears’ project
Abstract: We provide an update on progress in the FRDC and industry-funded project “Demersal ... interactions with marine benthos in the Australian EEZ of the Southern Ocean: an assessment of the ... vulnerability of benthic habitats to impact by demersal gears”. This project commenced in 2006 and is due to ... conclude with the publication of a final report in late 2011. Outputs of this project, including novel ...
Meeting Document : WG-EMM-10/23 : Auteur(s): G.P. Ewing, D.C. Welsford and A.J. Constable (Australia)
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Recent trends in numbers of Crozet shags breeding at the Prince Edward Islands
decreased by more than 70% from 840 pairs in 1994/95 to 220 pairs in 2003/04 and then increased to some 500 ... pairs in 2008/09. The trends are thought to have been influenced by breeding success, which averaged ... 0.30 and 0.66 chicks per pair per year from 1998/99–2002/03 and 2003/04–2008/09, respectively. There ... were similar trends in numbers breeding and breeding success of gentoo penguins Pygoscelis papua, which ...
Meeting Document : WG-EMM-10/P02 : Auteur(s): R.J.M. Crawford, P.G. Ryan, B.M. Dyer and L. Upfold
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Further development of a spatially explicit population dynamics operating model for Antarctic toothfish in the Ross Sea region
younger fish were found predominantly in southern areas of the Ross Sea shelf, mature fish on the slope ... and spawning fish in the northern areas of the Ross Sea region. Fits to the observations were ... generally good. Further investigations are recommended in order to further validate and refine this model ... data in areas not fished to date. In addition, further external validation diagnostics need to be ...
Meeting Document : WG-SAM-13/35 : Auteur(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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Fishery selection for Patagonian toothfish in CCAMLR Subarea 48.3, asymptotic or dome shaped?
Abstract: Characterisation of fishery selection is key to reducing uncertainty in the ... waters as they age and increase in size and, in combination with the practical difficulties associated ... Patagonian toothfish (D. eleginoides) in Subarea 48.3 is used to determine whether there is sufficient ... age with depth, is suggested as an indicator that a dome selection pattern is unlikely in the 48.3 ...
Meeting Document : WG-SAM-15/29 : Auteur(s): C. Darby, V. Laptikhovsky and M. Soeffker (United Kingdom)
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Development of a vessel safety checklist and debriefing protocol for use in SISO
Abstract: In accordance with the recommendations of the 2013 Panel Review of the CCAMLR Scheme of ... of SISO recommends the performance of a vessel safety check (see proposed Annex II in CCAMLR-XXXVI/25 ... approved by the Commission (proposed A(e bis) in CCAMLR-XXXVI/25). This paper provides examples of vessel ... safety checklists and debriefing forms and protocols for the Commission’s reference in developing ...
Meeting Document : CCAMLR-XXXVI/BG/16 : Auteur(s): Delegation of the USA