Search results
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Oceanological factors affecting formation of mackerel icefish aggregations in the South Georgia area during different seasons of the year
disperse at the depths more than 250 m within rather narrow temperature range (1.6-1,7ºC). In this period ... the water temperature is a limiting factor restricting fish distribution. In spring-summer icefish are ... feeding at the water temperature from 0.0ºC to 1.9ºC in the South Georgia area and to 2.0ºC near Shag ... Rocks. High level of energy exchange, intensive supply of food allow fish to distribute in the wider ...
Meeting Document : WG-FSA-05/76 : Author(s): Zh.A. Frolkina (Russia)
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Occurrence of Antarctic krill (Euphausia superba) concentrations in the vicinity of the South Shetland Islands: relationship to environmental parameters
Abstract: The influences of abiotic and biotic parameters on the occurrence of Antarctic krill ... (Euphausia superba) concentrations were studied in the waters north of the South Shetland Islands, a major ... krill fishing ground in the Antarctic, during the 1990/1991 austral summer. From early to mid-summer ... stages. In mid-summer, krill density was low in the oceanic zone (8 g m –2, and higher in the slope ...
Meeting Document : WG-EMM-98/18 : Author(s): T. Ichii, K. Kayatama, N. Obitsu, H. Ishii and M. Naganobu (Japan)
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Alternative method of the age composition assessment on the basis of surveys length data using mixture distributions
Abstract: On the basis of the bottom trawl surveys carried out by Russia and Great Britain during ... 2000, 2002, 2004 in the South Georgia area, it is demonstrated that the method by Aitchison and ... bootstrap method result in different estimates of mean fish density in the length series. Verification of ... the hypothesis of non-zero observations lognormal distribution for a large number of length groups ...
Meeting Document : WG-FSA-05/78 : Author(s): P. Gasyukov (Russia)
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Population subdivision and distribution of Euphausia superba in the region of the Antarctic Peninsula and adjacent waters in relation to fishery development
Abstract: Analysis of original and literature data for the past 10 years pertaining to the region ... -of the Antarctic Penunsula and adjacent waters points to a relationship between the distribution of ... krill and the waters of two major circulation systems- those of the Weddell Sea and the Bellingshausen ... Sea inhabited by separate subpopulations of the species. The latter are predominant in the region ...
Meeting Document : SC-CAMLR-VIII/BG/21 : Author(s): Delegation of USSR
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Proposal of extension of research block 48.6_2 to complete planned research and examine the habitat model and the stock structure
Abstract: Here we propose the northeastward of research block of 48.6_2 along ridges to promote ... sufficient utilization of the catch limit, which enable us to complete planned research, evaluate the habitat ... model and elucidate stock structure. The distribution of densities (catch per haul in 20-minute grid) of ... Dissostichus mawsoni is shown in Figure 1. The research operation for the block 48.6_2 has been concentrated in ...
Meeting Document : WG-SAM-16/08 : Author(s): T. Namba, T. Ichii and K. Taki
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The incidence of plastic in the diets of Antarctic seabirds
Abstract: We investigated the diets of seabirds at sea in the Antarctic from 1976 to 1988. During ... the study period, on eight cruises in the Ross, southern Scotia, and Weddell Seas and Drake Passage ... , we collected or pumped the stomachs of 1,223 seabirds of 23 species. The stomach contents of species ... that feed below the sea surface contained little plastic, as expected; these birds live entirely on ...
Meeting Document : SC-CAMLR-X/BG/18 : Author(s): Delegation of USA
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REPORT OF THE SECOND MEETING OF THE SEABIRD BYCATCH WORKING GROUP, HERMANUS, SOUTH AFRICA, 17-18 AUGUST 2008
Abstract: The Fouth Meeting of the ACAP’s Advisory Committee was held in Cape Town, South Africa ... from 22 – 25 August 2008. It was preceded by a meeting of the Seabird Bycatch Working Group (SBWG) on ... 17-18 August 2008. This paper provides a report on the SBWG meeting. The Working Group reviewed ... methods to reduce seabird bycatch in trawl fisheries, and noted that the body of work investigating and ...
Meeting Document : WG-FSA-08/61 : Author(s): ACAP Seabird Bycatch Working Group
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INDICATIVE ESTIMATES OF BIOMASS AND YIELD OF WHITSON’S GRENADIER (M. WHITSONI) ON THE CONTINENTAL SLOPE OF THE ROSS SEA IN SUBAREAS 88.1 AND 88.2
being equal to 16% of the catch limit of Dissostichusspp. in these subareas. The 16% was based on the ... ratio of the by-catch limit for macrourids to the catch limit for Dissostichus spp. in Division 58.5.2 ... in 2002/03 (CCAMLR-XXI, para 11.53). The bycatch limit for macrourids in Division 58.5.2 had in turn ... been based on the extrapolation of catch rates from a trawl survey of M. carinatus on Banzare Bank. Two ...
Meeting Document : WG-FSA-08/32 : Author(s): S.M. Hanchet, D. Fu and A. Dunn (New Zealand)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2015- Part C: Data analysis and MPA scenario development
Abstract: Germany intends to present the Scientific Committee the scientific background and ... justification for the development of a marine protected area (MPA) in the Weddell Sea planning area. In ... accordance with the recommendations by WG-EMM-14 (SC-CAMLR-XXIII, Annex 6), this was done in three separate ... documents (Part A-C). SC-CAMLR-XXXIV/BG/15 (Part A) sets out the general context of the establishment of ...
Meeting Document : SC-CAMLR-XXXIV/BG/17 : Author(s): Delegation of Germany
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RAPID WARMING OF THE OCEAN AROUND SOUTH GEORGIA,SOUTHERN OCEAN, DURING THE 20TH CENTURY: FORCINGS, CHARACTERISTICS AND IMPLICATIONS FOR LOWER TROPHIC LEVELS
Abstract: The Southern Ocean is known to have warmed considerably during the second half of the ... 20th century but there are few locations with data before the 1950s. In addition, assessments of change ... in this region are hampered by the strong seasonal bias in sampling, with the vast majority of data ... collected during the austral summer. However, oceanographic measurements near South Georgia span most of the ...
Meeting Document : WG-EMM-08/P03 : Author(s): M.J. Whitehouse, M.P. Meredith, P. Rothery, A. Atkinson, P. Ward and R.E. Korb