Résultats de la recherche
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QUANTIFYING MOVEMENT BEHAVIOUR OF VESSELS IN THE ANTARCTIC KRILL FISHERY
behaviour of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed ... longer distances moved between hauls in Area 48.1 compared to 48.2 and 48.3 reflecting the large number ... model suggested in late 1980s are proposed based on the results from this study. These analyses ... demonstrate the need for high quality year-round data on all vessels participating in the krill fishery to ...
Meeting Document : WG-EMM-09/P05 : Auteur(s): S. Kawaguchi and S.G. Candy
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ANTARCTIC TOOTHFISH STOCK ASSESSMENT IN DIVISION 58.4.1 ON THE BASIS OF CPUE DATA
Abstract: An attempt to use CPUE data based on data of erussian observers in the assessment of ... Antarctic toothfish stock in division 58.4.1 is made. Unlike some previous results obtained for this ... biomass in the Ross Sea. As a result of implementation of a dynamic production model, current biomass in ... : ANTARCTIC TOOTHFISH STOCK ASSESSMENT IN DIVISION 58.4.1 ON THE BASIS OF CPUE DATA Approval: Approved ...
Meeting Document : WG-SAM-09/12 : Auteur(s): D. Vasilyev, K. Shust, V. Tatarnikov, I. Istomin and A. Petrov (Russia)
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Seabird mortality in the longline fishery for Patagonian toothfish at the Prince Edward Islands: 1996–1997
Prince Edward Islands in October 1996, but unsanctioned fishing commenced some months before this date ... the estimated 3.8 million hooks set by permit-holders in the South African Exclusive Economic Zone ... hooks were found in birds or in bird pellets on Marion Island during 1996-97. Almost all birds killed ... were breeding adults, and there was a significant bias towards males in at least three species. More ...
Meeting Document : WG-FSA-97/51 : Auteur(s): Boix-Hinzen, C., Enticott, J.W., Ryan, P.G., Wanless, R., Purves, M., Nel, D.C.
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Echo integration in low signal to noise regimes: methods of noise estimation and removal
Abstract: The results of acoustic surveys, especially in low signal-to-noise regimes, are ... contribution to the above-threshold-signal cannot later be removed in post processing. The only solution is to ... log unthresholded data and to correct for noise in post processing. Integrated data collected at 120 ... requires that logged data have high resolution in both depth and distance. It can be applied so long as ...
Meeting Document : WG-EMM-97/74 : Auteur(s): Higginbottom, I., Pauly, T.
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An outline of the Antarctic research cruise by the Japanese RV Kaiyo Maru around the South Shetland Islands in 1994/95
Agency was conducted in the southwest of the Scotia Sea, especially in the vicinity of the South Shetland ... oceanographic and ecological survey in relation to the distribution and abundance of the Antarctic krill ... analytical studies are currently in progress. Author(s): Takao, T., Ogishima, T., Naganobu, M., Ichii, T ... South Shetland Islands in 1994/95 Approval: Approved ...
Meeting Document : WG-EMM-95/50 : Auteur(s): Takao, T., Ogishima, T., Naganobu, M., Ichii, T., Kawaguchi, S.
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Diving pattern and performance in nonbreeding gentoo penguins (Pygoscelis papua) during winter
organization during the foraging trip) in relation to diet in nonbreeding Gentoo Penguins (Pygoscelis papua ... ) over 59 days (involving 5,469 dives) in winter. We estimated foraging ranges and prey capture rates ... , and deep dives mainly for feeding. Foraging activity of non breeding Gentoo Penguins in winter is ... % less and stomach-content mass on return ashore 30% less in winter. We conclude that foraging activity ...
Meeting Document : WG-CEMP-92/37 : Auteur(s): T.D. Williams (United Kingdom), A. Kato (Japan), J.P. Croxall (United Kingdom), Y. Naito (Japan), D.R. Briggs, S. Rodwell and T.R. Barton (United Kingdom)
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The state of exploited fish stocks in the Southern Ocean - a review
until the season 1989/90. About two thirds of the catches have been taken in the Atlantic Ocean sector ... (mainly South Georgia) while the remaining one third originated primarily from the Kerguelen waters in the ... most heavily affected by fishing are those of Notothenia rossii in both sectors, Notothenia squamifrons ... in the Indian Ocean sector and of Champsocephalus gunnari in the South Orkney Islands/Antarctic ...
Meeting Document : SC-CAMLR-X/BG/13 : Auteur(s): Delegation of Germany
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Stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea 48.3 for the 1991/91 season, using virtual population analysis
Abstract: An assessment of the Champsocephalus gunnari fishery in sub-area 48.3 using VPA from ... situation to assessments in 1989/90 with a decrease in overall biomass and recruitment over recent years ... catches in the near future on the basis of a target F is questioned Author(s): G. Parkes (United Kingdom ... ) Title: Stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea ...
Meeting Document : WG-FSA-91/15 : Auteur(s): G. Parkes (United Kingdom)
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A descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in the Ross Sea up to 2005/06
Abstract: A descriptive analysis of the toothfish tagging programme carried out in Subareas 88.1 ... . Tagging rates by area over the past three years have been in the same proportion as the catch by area ... . However, recapture rates have tended to be higher in the northern and eastern SSRUs 88.1C and 88.2E. About ... Secretariat as soon as possible so that the analysis can be updated in time for the 2006 WG-FSA meeting ...
Meeting Document : WG-FSA-SAM-06/09 : Auteur(s): A. Dunn and S.M. Hanchet (New Zealand)
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Net escapement of Antarctic krill in trawls
Abstract: This document describes the aims and methodology of a three year project (commenced in ... 2012) entitled Net Escapement of Antarctic krill in Trawls (NEAT). The study will include a morphology ... . Results will be used to quantify the theoretic catch efficiency and escape mortality in different net ... selective properties for krill in different trawls. Author(s): B.A. Krafft (Norway), L.A. Krag, B. Herrmann ...
Meeting Document : WG-EMM-12/24 : Auteur(s): B.A. Krafft (Norway), L.A. Krag, B. Herrmann (Denmark), A. Engås, S. Nordrum and S. Iversen (Norway)