Résultats de la recherche
-
Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2004 winter and 2004/05 breeding season
Abstract: The number of entanglements in the fifteenth consecutive winter surveyed, decreased by ... 64% from last year. For the first time since records started in 1990, none of the injuries were ... % compared to last year; the lowest number of entanglements recorded since 1989. As in previous years, most ... individuals observed entangled in debris were juveniles (80% of winter and 50% of summer observations). Of the ...
Meeting Document : SC-CAMLR-XXIV/BG/16 : Auteur(s): Delegation of the United Kingdom
-
Preliminary assessment of mackerel icefish (Champsocephalus gunnari) for the Heard Island Plateau region (Division 58.5.2) based on a survey in June 2005
Abstract: A survey of Mackerel Icefish, Champsocephalus gunnari,was undertaken in Division 58.5.2 ... in the vicinity of Heard Island in June 2005 to provide the information for an assessment of short ... -term annual yield in the 2005/2006 CCAMLR season. This paper provides a preliminary assessment of yield ... using the assessment methods of CCAMLR. It is proposed that a one-year projection be used in the ...
Meeting Document : WG-FSA-05/39 : Auteur(s): A.J. Constable, T. Lamb and R. Williams (Australia)
-
The structure and spatial distribution of Antarctic krill aggregations from acoustic observation in the South Georgia area
Abstract: Results of acoustic surveys carried out in winter months of 2000 and 2002 demonstrate ... significant distinctions in spatial distribution patterns of krill in the northwestern and the northeastern ... that in winter months in the northwestern part where foraging areas of dependent predators are located ... 100 g/m2 determined as potential fishing grounds were located in the northeastern part of South ...
Meeting Document : WG-EMM-04/66 Rev. 1 : Auteur(s): S.M. Kasatkina (Russia)
-
Proportional recruitment indices of Antarctic krill from Japanese fisheries data in Subareas 48.1, 48.2 and 48.3 during 1980 through 1997
R1 and R2 in Subarea 48.1 generally showed similar trends to Siegel et al. (1 998)'s values ... around the Elephant Island. However, the values especially R1 in this study were extremely smaller than ... the distribution of small krill by commercial fisheries. Inter-annual pattern of R1 and R2 in Subarea ... operation periods and occasional small sample size, interpretation of it's pattern in this Subarea ...
Meeting Document : WG-EMM-98/33 : Auteur(s): S. Kawaguchi, T. Ichii and M. Naganobu (Japan)
-
A TIME FOR ACTION IN THE MANAGEMENT OF ANTARCTIC KRILL FISHERIES
Abstract: In this paper, ASOC draws CCAMLR’s attention to the most pressing issues in relation to ... address key scientific uncertainties at the SSMU level in Area 48, and the consideration of feedback ... management approaches in this Area as soon as possible. In addition, ASOC maintains that CCAMLR should take ... precautionary measures to prevent concentration of catches in coastal areas as the fishery approaches the ...
Meeting Document : CCAMLR-XXVII/BG/24 : Auteur(s): Submitted by ASOC
-
PROPERTIES OF KRILL DISTRIBUTION IN PELAGIC AND COASTAL SSMUs OF THE SOUTH ORKNEY ISLANDS SUBAREA ACCORDING TO THE DATA OF SCIENTIFIC OBSERVATIONS AND FISHERY
Abstract: In this paper the krill spatial distribution in the in coastal and pelagic SSMUs of the ... presented based on the CCAMLR 2000 Survey data. It is shown, that despite the high biomass concentrated in ... long-term observations and fishery in Subarea 48.2. The types of geostrophic current fields and ... correspondent fishing ground allocations in the South Orkney Islands area revealed from 1962 to 1997 are ...
Meeting Document : WG-EMM-08/55 : Auteur(s): S.M. Kasatkina and V.N. Shnar (Russia)
-
Assessments of by-catch in trawl fisheries at Heard and MacDonald Islands
caught as by-catch in the commercial trawl fisheries in the Heard Island area (Statistical SubArea 58.5.2 ... the spawning biomass of these stocks in the longer term. The long-term annual yield for each of the ... data obtained from the region in 1990-1993. Values for missing input parameters were obtained from the ... literature. The second part of the analysis examined the amount of each species caught in the commercial ...
Meeting Document : WG-FSA-97/30 : Auteur(s): de la Mare, W.K., Williams, R., Constable, A.
-
Antarctic krill, Euphausia superba Dana, demography studies in the seas of Sodruzhestvo and Cosmonauts (Indian Ocean sector of Antarctica)
Abstract: The materials on Euphausia superba biological state and size composition in the Indian ... duration, as well as about the interannual variability in the above parameters. According to our data ... , duration of E.superba life cycle somewhat exceeds 5 years in the Sea of Cosmonauts and 6 years in the Sea ... of Sodruzhestvo. E.superba growth rate ranges from 0.126- 0.133 mm per day in the first year 0f life ...
Meeting Document : WG-KRILL-93/45 : Auteur(s): E.A. Pakhomov (Ukraine)
-
On assessing the size of the humped rockcod stock (Notothenia gibberifrons) in Subarea 48.3
Abstract: An adaptive approach was used to assess the Notothenia gibberifrons stock in Area 48.3 ... approach in this case involved using a target function in the form of the sum of square deviations in ... logarithms of observed and calculated biomass indices and resulted in an estimate of from 21.5 to 42.1 ... thousand tonnes for N. gibberifrons biomass in the 1989/90 season. It is thus possible to suggest a TAC of ...
Meeting Document : WG-FSA-91/26 : Auteur(s): P.S. Gasiukov (USSR)
-
Statistical problems in krill stock hydroacoustic assessments
the methods applied to establish biomass in a survey area and the second is the improvement in ... accuracy of target-strength measurements. In the case of statistical methods, there are no clear guidelines ... survey methods assume the population is fixed in space, relative to the sampling interval. There remain ... several unsatisfied needs for improvements in sampling design and tests for systematic trends in survey ...
Meeting Document : SC-CAMLR-VII/BG/22 : Auteur(s): United States of America