Search results
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Hydroacoustic observations of the vertical distribution of icefish Champsocephalus gunnari in the western part of the slope of the South Georgia Island in December 1999–January 2000
Abstract: The dynamics of daily vertical migrations of icefish Champsocephalus gunnari was ... studied and some quantitative estimates were obtained by results of analysis of more than 150 fragments of ... echograms obtained with the use of an echograph of the "Priboi-101" echo sounder during the ... concentrations of icefish can be considered by the type of the vertical distribution as bottom/pelagic ones, and ...
Meeting Document : WG-FSA-00/19 : Author(s): V.L. Senioukov (Russia)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) - Version 2015 - Part A: General context of the establishment of MPAs and background information on the Weddell Sea MPA planning area-
EMM) the background document that provides the scientific basis for the evaluation of a marine ... protected area (MPA) in the Weddell Sea planning area. The contents and structure of the whole document ... reflect its main objectives, i.e. to set out the general context of the establishment of MPAs and to ... data retrieval process (Part B) and to describe the results of the scientific analyses and the MPA ...
Meeting Document : WG-EMM-15/38 Rev.1 : Author(s): K. Teschke (Germany) on behalf of the Weddell Sea MPA (WSMPA) project team
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
Abstract: The results of Butterworth et al. (1991) relating potential krill yield to a pre ... -exploitation survey estimate of krill biomass are extended as specified by the Third Meeting of Working Group ... on Krill. The most important of these extensions is integration over the ranges of uncertainty for a ... number of the model parameters. Results are provided for the probability of spawning biomass falling ...
Meeting Document : WG-KRILL-92/04 : Author(s): D.S. Butterworth, G.R. Gluckman and S. Chalis (South Africa)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2015 - Part A: General context of the establishment of MPAs and background information on the Weddell Sea MPA planning area
justification for the development of a marine protected area (MPA) in the Weddell Sea planning area. In ... documents (Part A-C). SC-CAMLR-XXXIV/BG/15 (Part A) sets out the general context of the establishment of ... the means and the results of the scientific analyses and the development of objectives and priority ... areas for a Weddell Sea MPA. Here, the delegation of Germany intends to update the Scientific Committee ...
Meeting Document : SC-CAMLR-XXXIV/BG/15 : Author(s): Delegation of Germany
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Influence of tag numbers, size of tagged fish, duration of the tagging program, and auxiliary data on bias and precision of an integrated stock assessment
collection, this study investigated how the bias and precision of a CASAL assessment is influenced by various ... aspects of a tagging program, in particular the effects of the numbers of fish tagged, the duration of a ... tagging program, the size of tagged fish, and the type of auxiliary data used in the assessment. The ... numbers were important particularly in the early stages of an exploratory fishery to ensure some ...
Meeting Document : WG-SAM-12/24 : Author(s): P.E. Ziegler (Australia)
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Peculiarities of spatial-temporal variability of oceanological conditions in the Weddell Sea region in the context of the development of a stock hypothesis for Antarctic toothfish (Dissostichus mawsoni) in Area 48
Abstract: A significant spatial-temporal variability of the oceanological environmental ... conditions influencing the formation of biological productivity zone in Subareas 48.5 and 48.6 is revealed ... . Analysis of available information for the development of the stock hypothesis for Antarctic toothfish stock ... in Area 48 requires consideration of environmental variability, especially with the fragmentary ...
Meeting Document : WS-SM-18/11 : Author(s): V. Shnar and S. Kasatkina
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The utility of satellite remote sensing for identifying the location and size of penguin breeding sites in Antarctica: a review of previous work and specifications of some current satellite sensors
Abstract: Broad-scale survey of the abundance of colonial breeding penguins requires locating all ... , or the great majority, of colonies as the first of several survey stages. Given the remoteness of ... . Past evaluations of the utility of satellites for the detection of penguin breeding sites are reviewed ... with respect to the following issues: spectral response of surrounding material, variability in the ...
Meeting Document : WG-EMM-03/51 : Author(s): C. Southwell and L. Meyer (Australia)
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VME detection thresholds: provision of a beta version of a R library to compute detection probabilities and preliminary results on the case of the sea pens (Pennatulacea) of the CCAMLR Division 58.4.4b
, the data are reported to the Secretariat to inform the CCAMLR about the potential presence of VME to ... of sea pens (Pennatulacea, NTW, VME bioindicator) in the 58.4.4b sector have been reported during the ... CCAMLR SAM Working Group 2018. However, despite the important level of the catches, no VME detection ... threshold triggering out the establishment of an immediate fishing exclusion zone have been reached. Here ...
Meeting Document : WG-FSA-2019/46 : Author(s): A. Martin and M. Eléaume
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Distribution and possible areas of spatial mixing of two stocks of humpback whales, a krill predator, in the Indo-Pacific region of the Antarctic revealed by genetic analyses
Abstract: The main purpose of this study was to investigate the distribution and areas of mixing ... of two stocks of the humpback whale, a krill predator, in the Indo-Pacific region of the Antarctic ... stocks have shown sign of recovery after heavy commercial exploitation in the last century. Information ... on distribution and areas of mixing in the Antarctic feeding grounds is essential to assist the ...
Meeting Document : WG-EMM-2019/67 : Author(s): L.A. Pastene, M. Goto, M. Taguchi and K. Matsuoka
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Comparative analysis of the results of determination of reproductive ability of Antarctic toothfish in the Subarea 88.3
Abstract: Results of histological analysis of gonads of female and male Antarctic toothfish ... indices of females and males, age, indices of gonads, fecundity, and condition by Fulton are described. In ... subareas of the Pacific Antarctic studied previously, it was detected a low share of females with the ... ovaries at the stage of vitelligenous growth of oocytes (diameter 1.41-1.61 mm), and males with maturing ...
Meeting Document : WG-FSA-12/32 : Author(s): S.V. Piyanova, A.F. Petrov and A.V. Presnyakov (Russia)