Search results
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Selecting sampling frequency for measuring diving behaviour
Abstract: The use of time-depth recorders has revolutionised knowledge of diving activity of ... marine animals to the point where very detailed studies of variation in diving behaviour and performance ... effects detection of dives and statistics of diving behaviour is investigated, using data from Antarctic ... fur seals and southern elephant seals representative of the extremes of diving in pinnipeds. For both ...
Meeting Document : WG-CEMP-93/14 : Author(s): I.L. Boyd (United Kingdom)
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A proposal to subdivide CCAMLR Statistical Division 58.4.1 using environmental data
1996 based on the results of an acoustic survey (BROKE) of the southernmost 873,000 km2 of this area ... (CCAMLR 1996). Detailed subsequent analysis of the results of this survey have indicated that Division ... basis of environmental data. Krill is more abundant in the western subdivision and its biomass is more ... latitudinally extensive in this area. This observed pattern appears to be historically stable. Because of the ...
Meeting Document : WG-EMM-00/30 : Author(s): S. Nicol and T. Pauly (Australia)
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Antarctic neritic krill Euphausia chrystallorophias: spatio-temporal distribution, growth and grazing rates
Abstract: Dynamics of distribution, growth, life span and feeding were studied in the endemic ... Antarctic euphausiid Euphausia crystallorophias in the central part of the Indian sector of the Southern ... . Both larvae and adult E.crystallorophias were found in abundance in shelf waters of 100-500 m depth ... . Maximum abundances of larvae (up to 7688 ind.∙m-2) and adults (up to 1267 ind. ∙m-2) were found in the ...
Meeting Document : WG-Joint-94/10 : Author(s): E.A. Pakhomov (Ukraine) and R. Perissinotto (South Africa)
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A suggested bottom trawling survey on the Ob and Lena Banks
Abstract: The paper presents calculations of water flow velocity through the codend under the ... ratios of cod end length to its diameter, mesh bar length to mesh bar diameter, and for various mesh ... opening coefficients. The results obtained were analysed with regard to the impact of flow velocity on ... impact on selection properties. The greater velocity of water outflow is effecting the wider opening of ...
Meeting Document : WG-FSA-93/10 : Author(s): W. Moderhak (Poland)
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SPATIAL PATTERNS IN MACKEREL ICEFISH DIET PROVIDES INSIGHTS INTO KRILL ABUNDANCE AND DISTRIBUTION
Abstract: The diet of mackerel icefish was investigated from stomachs of 828 fish caught on the ... South Georgia and Shag Rocks shelves in January 2009. The results show that the diet of this normally ... results are consistent with other indicators of krill availability on the South Georgia shelf, which ... indicate that the 2008/09 season was a particularly poor one for krill. Comparison of frequency of ...
Meeting Document : WG-EMM-09/27 : Author(s): M.A. Collins and C.E. Main (United Kingdom)
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Assessment models for Patagonian toothfish in research block 58.4.4b_1 (SSRU 58.4.4bC) for the years 1990-2014
Abstract: We made five sensitive runs of single-sex age-structured CASAL models for stock status ... assessments of Dissostichus eleginoides in the research block 58.4.4b_1 following the recommendation of the WG ... . Firstly four sensitive runs were made as follows: 1) inclusion of all observations and estimate of same ... double normal selectivity for disease mortality and fishery (OB_1a model), 2) removal of tag and CPUE ...
Meeting Document : WG-SAM-15/25 : Author(s): K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan)
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Assessment models for Patagonian toothfish in Division 58.4.4, SRU C on Ob and Lena Banks for the years 1989/90 to 2012/13
Abstract: I revised the CASAL catch-at-length models for stock status assessments of Dissostichus ... /21), and a combined value of over-dispersions were used for all tag-release years (2008 and 2010‒12 ... ) instead of separated value for each year, 2)I calculated effective sample size for the proportions-at ... expected proportions, 3)I changed the tagging mortality rate estimate of 0.1 instead of 0.2 because ...
Meeting Document : WG-FSA-13/35 : Author(s): K. Taki (Japan)
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Reports on abundance and biological information on toothfish in Division 58.4.4 a and b by Shinsei Maru No. 3 in 2010/11 season
the decision in the 29th CCAMLR Meeting of the Commission (CCAMLR-XXIX, 2010; paragraph 4.62). This ... report described the results during the survey in two SSRUs (B & C) of Ob Lena Bank. Total catch ... (excluding fish released alive) of Dissostichus eleginoides and other by-catch species was 37.8 tonnes in the ... survey area in 70 longline sets. D. eleginoides showed the highest catch of 35.4 tonnes, contributing ...
Meeting Document : WG-SAM-11/06 : Author(s): K.Taki, T. Iwami and M. Kiyota (Japan)
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Draft Revised Management Plan for ASPA 149, Cape Shirreff and San Telmo Island, Livingston Island, South Shetland Islands
intersessional contact group formed during the 2004 meeting of the CEP/ATCM. Since a marine area is included in ... provisions of Annex V to the Environmental Protocol and consistent with the Guide to the Preparation of ... of the values of the site and of the measures necessary to protect the site was undertaken. A field ... the draft plan is accurate and up-to-date. The boundaries of the site have been revised in this draft ...
Meeting Document : WG-EMM-04/8 : Author(s): Delegations of Chile and USA
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Towards an initial operational management procedure for the krill fishery in Subareas 48.1, 48.2 and 48.3
requires a basis for the assessment of resource status, and an algorithm for specifying the levels of ... regulatory mechanisms (e.g. a catch control law) that depends on the results of the assessment. Developing ... and selecting a procedure requires a basis for the simulation testing of procedures, and an ... operational definition of CCAMLR Article II to provide criteria against which to assess procedure performance ...
Meeting Document : SC-CAMLR-VIII/BG/17 : Author(s): Delegation of South Africa