Search results
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Management of C. gunnari in Subarea 48.3
Abstract: The management of Champsocephalus gunnari at South Georgia is complicated by the ... likelihood of substantial periodic variation in natural mortality rates. These may be associated with ... increased consumption of icefish by Antarctic fur seals in years of poor krill availability. Thus natural ... mortality of icefish may, in some years, increase by a large factor (assumed here to be 4) declining to ...
Meeting Document : WG-FSA-97/38 : Author(s): Kirkwood, G.P., Parkes, G.B., Everson, I., Agnew, D.J.
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Oceanography of the South Georgia and South Orkney Islands regions using high-resolution models
productive, supporting large colonies of higher predators, and with a history of commercial exploitation ... . Many of the key oceanographic and ecological processes determining the operation of these marine ... ecosystems operate over small spatial scales of <10 km. Understanding the drivers of variability in such ... processes requires the development of high-resolution ocean models. Here we describe the development of ...
Meeting Document : WG-EMM-17/30 : Author(s): E. Young, E. Murphy and P. Trathan
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On selectivity of commercial and research trawls when krill catching
Abstract: In the paper the attempt was made to compare selective features of several midwater ... krill trawls within the frame of krill density precise estimates provision problem in echo-surveys. The ... results of fishing one krill aggregation with two types of trawls (PT 72/308 commercial trawl and Isaacs ... -Kidd research trawl IKTM) are presented. Selectivity differences of those trawls resulted in ...
Meeting Document : WG-EMM-96/34 : Author(s): Kasatkina, S.M.
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The morphology of Antarctic toothfish (Dissostichus mawsoni Norman 1937) males and females and new data on its gonad structure in the Ross Sea in the summer period
Abstract: The results of the histological analysis of the Antarctic toothfish (Dissostichus ... 88.2 of the Ross Sea are presented. The morphological parameters and indices of maturity have been ... described. The histological criteria of the assessment of the ovary maturity stages, cytological parameters ... of oocytes and type of the toothfish oogenesis have been determined. The analysis of the histological ...
Meeting Document : WG-FSA-07/38 Rev. 2 : Author(s): S.V. Piyanova and N.V. Kokorin (Russia)
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Fishes incidentally caught by Japanese Antarctic krill commercial fishery to the north of the South Shetland Islands during the 1994/95 austral summer
Abstract: Observations on abundance of by-catch fishes were made during the austral summer months ... of 1995 (from 30 January to 18 February) on board F/V Niitaka Maru to the north of the South Shetland ... Islands. Among 78 hauls examined, a total of 97 specimens of fishes belonging to five species, Electrona ... sample of 50 kg of krill. Number of by-catch fishes ranged from 0 to 50 per 100 kg of krill catch and ...
Meeting Document : WG-EMM-95/56 : Author(s): Iwami, T.
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Spatial distribution of Champsocephalus gunnari in Subarea 48.3. Some implications for parameter estimation
Abstract: Results of the analysis of three consecutive cruises to subarea 48.3 are analyzed. A ... significant variance component associated with the formation of clusters of stations was found as well as a ... (as in the estimation of the variance of the mean density) might result in a gross underestimation of ... the variance. The spatial pattern of density across years might be applied to construct a model of ...
Meeting Document : WG-FSA-96/30 : Author(s): Calcagno, J., Gonzalez, B., Marschoff, E.
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Schedule of Conservation Measures in Force 1991/92
SCHEDULE OF CONSERVATION MEASURES IN FORCE 199V92 ... schedule lists Conservation Measures adopted by the Commission in accordance with Article IX of the ... Convention for the Conservation of Antarctic Marine Living Resources. , Conservation Measures are ... numbered in simple consecutive order in arabic numetals with a roman numeral identifying the number of the ...
Document : Site Section: Publications
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ENVIRONMENTAL, SPATIAL, TEMPORAL AND OPERATIONAL EFFECTS ON THE INCIDENTAL MORTALITY OF BIRDS IN THE LONGLINE FISHERY IN THE CROZET AND KERGUELEN AREAS 2003–2006
estimate of mortality derived from these observations amounts to between 7 766 and 10 541 birds caught. The ... great majority (between 84 and 91% depending on the season) were white-chinned petrels, the males of ... which species seem to be more vulnerable to this type of mortality. Grey petrels were also caught ... incidentally in large numbers (576 individuals) over the same period, and represent between 9 and 16% of ...
Meeting Document : SC-CAMLR-XXVII/12 : Author(s): Delegation of France
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Schedule of Conservation Measures in Force 1990/91
SCHEDULE OF CONSERVATION MEASURES IN FORCE (As ... Conservation Measures adopted by the Commission in accordance with Article IX of the Convention for the ... Conservation of Antarctic Marine Living Resources that are currently in force. Conservation Measures are ... numbered in simple consecutive order in arabic numerals with a roman numeral identifying the number of ...
Document : Site Section: Publications
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Adélie penguin population change in the pacific sector of Antarctica: relation to sea-ice extent and the Antarctic Circumpolar Current
Abstract: One of the longest continuing data sets involving a marine organism in the Antarctic is ... that of annual estimates of breeding population size of Adélie penguins Pygoscelis adeliae at colonies ... on Ross Island, Ross Sea, 1959 to 1997. The sizes of these colonies have displayed significant ... physical environmental factors during that part of the record with comparable sea-ice satellite imagery ...
Meeting Document : WG-EMM-01/23 : Author(s): P.R. Wilson (New Zealand), D.G. Ainley, N. Nur, S.S. Jacobs (USA), K.J. Barton (New Zealand), G. Ballard and J.C. Comiso (USA)