Résultats de la recherche
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Using effective sample sizes to evaluate the efficiency of length samples collected by at-sea observers in the krill fishery in Subarea 48.1
, collecting length data from the catch is a task undertaken by all at sea observes in CCAMLR fisheries ... . Although analyses in the past have looked to the optimal design of the observer program, in terms of levels ... characterise how many krill are measured by observers, and for how many hauls. We then simulate the impact of ... different haul-wise sample sizes on the ability to estimate mean length in a sample per SSMU × month ...
Meeting Document : WG-SAM-16/39 : Auteur(s): N. Kelly, S. Kawaguchi, P. Ziegler and D. Welsford
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Approaches to data collection and analysis for detecting and quantifying functional overlap at the scale of the individual vessell
Abstract: Summary Over the past years, the subject of whether there is a functional overlap ... between the krill fishery and pelagic krill predators has been discussed throughout the SC-CAMLR Working ... interactions and competition between the krill fishery and krill-dependent predators during fishing operations ... monitoring. The Scientific Committee noted that consideration is needed on what specific scientific questions ...
Meeting Document : WG-EMM-18/33 : Auteur(s): M. Söffker and N. Gasco
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Information about tagged Patagonian toothfish (Dissostichus eleginoides) tagged in the CCAMLR Convention Area and recovered in the SIOFA management area by two Spanish vessels in 2017/18
Abstract: Data from tagged patagonian toothfish recaptured in the SIOFA area are not usually ... reported as there are not a tagging program for the fishing vessels operating in the area. Most of the ... notified recaptures come from fish tagged in the CCAMLR Convention Area. Eleven tagged specimens of ... patagonian toothfish (D. eleginoides) that have been released in the CCAMLR management area have been ...
Meeting Document : WG-FSA-18/53 Rev. 1 : Auteur(s): R. Sarralde and S. Barreiro
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Poor breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season
Abstract: This paper describes the diet and foraging behaviour of Ad6lie penguins at B6chervaise ... Island during 1998-99, a season of high chick mortality. One thousand nests perished in the three weeks ... following first hatch, when the chicks were very small. A total of 802 chicks reached crèche age from 1880 ... nests compared to previous "good" seasons in which between 1200 and 1800 chicks crèched on the ...
Meeting Document : WG-EMM-99/25 : Auteur(s): L. Irvine, J.R. Clarke and K.R. Kerry (Australia)
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FEEDING AND FOOD INTERRELATIONSHIPS OF ANTARCTIC TOOTHFISH D.MAWSONI NORMAN, 1937 (PERCIFORMES, NOTOTHENIIDAE) IN NEAR-CONTINENTAL WATERS OF THE INDIAN OCEAN ANTARCTIC AREA AND ON THE BANZARE BANK
Abstract: The paper is based on materials on D.mawsoni feeding collected by authors in the four ... near-continental seas of the Indian Ocean Antarctic area (Dupont D’Urville, Mawson, Davis, and ... Cosmonaut Seas) and on the Banzare Bank during 2004-2008. The food relationships are considered. The ... qualitative and quantitative composition of diet for young and adult Antarctic toothfish is studied. The ...
Meeting Document : WG-FSA-08/34 : Auteur(s): A.F. Petrov and I.G. Istomin (Russia)
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A randomised sampling design used in the longline fishery for Dissostichus eleginoides in the Southern Indian Ocean
individuals taken by individual longlines in the fishery for Dissostichus eleginoides. The line was divided ... into constituent baskets of line; we used the line as the sampling frame, and baskets as the primary ... sampling units. The design allows representative samples to be taken while a line is being hauled; it ... offers the potential of little disruption to commercial activities and reductions in observer effort ...
Meeting Document : WG-FSA-96/56 : Auteur(s): Duhamel, G., Ashford, J.
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EVALUATION OF VME TAXA MONITORING BY OBSERVERS FROM FIVE VESSELS IN THE ROSS SEA REGION ANTARCTIC TOOTHFISH LONGLINE FISHERIES DURING THE 2008-09 SEASON
Abstract: Conservation Measure 22-07 (2008) requires vessels fishing in the Ross Sea region (and ... these samples for subsequent onshore classification by taxonomists. Comparison of the observer’s ... classification versus the taxonomist’s classification showed that for most groups, the observer classifications ... materials; stylasterids and gorgonians. Errors in other groups indicated the observers did not always record ...
Meeting Document : TASO-09/08 : Auteur(s): Carter, M., Parker, S.J., Mormede, S., Tracey, D.M.
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Reports on stock status and biological information on toothfish obtained from the scientific research survey by Shinsei Maru No. 3 in 2009/10 in the SE sector of Division 58.4.3b
Abstract: In accordance with the Conservation Measure 41-07 (2009), a survey was conducted in ... order to collect information for the stock status and biological information on toothfish in the ... fishing gear. Total catch (excluding released weight) of Dissostichus spp. And the other by-catch species ... was 15.9 tonnes in the SE sector, where the catch limit of 18 tonnes was set. Dissostichus spp. Made ...
Meeting Document : WG-FSA-10/45 : Auteur(s): K. Taki, M. Kiyota and T. Ichii (Japan)
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Preliminary reports on stock status and biological information on toothfish obtained from the scientific research survey by Shinsei Maru No. 3 in 2009/10 in the SE sector of Division 58.4.3b
Abstract: In accordance with the Conservation Measure 41-07 (2009), a survey was conducted in ... order to collect information for the stock status and biological information on toothfish in the ... fishing gear. Total catch (excluding released weight) of Dissostichus spp. And the other by-catch species ... was 15.9 tonnes in the SE sector, where the catch limit of 18 tonnes was set. Dissostichus spp. Made ...
Meeting Document : WG-SAM-10/13 : Auteur(s): K. Taki, M. Kiyota and T. Ichii (Japan)
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Revised estimates of the biological parameters for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea
Abstract: This report updates the estimates of the biological parameters for Antarctic toothfish ... (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B). We present revised estimates of the ... observer data collected from commercial fishing operations in the Ross Sea. In addition, we review meta ... -data for plausible estimates of the steepness parameter of the stock-recruitment relationship and ...
Meeting Document : WG-FSA-SAM-06/08 : Auteur(s): A. Dunn, P.L. Horn and S.M. Hanchet (New Zealand)