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Assessment of fishable krill biomass on the basis of the acoustic surveys results using geostatistical methods
Abstract: ABSTRACT Applicability of geostatistical methods in processing the acoustic fields of ... usefulness of these methods in studying the structure of krill density field for biomass assessment in ... compliance with different thresholds of their fishery importance. The structure of krill density field in ... Subarea 48.3 based on the surveys 2000 and 2002 indicates that krill fishable biomass is concentrated in ...
Meeting Document : WG-SAM-10/07 Rev. 1 : Autor(es): S.M. Kasatkina and P.S. Gasyukov (Russia)
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Have Antarctic toothfish returned to McMurdo Sound?
Abstract: A dramatic reduction in catch rates of Antarctic toothfish in McMurdo Sound, Antarctica ... , has led to conclusions that the commercial bottom longline fishery for toothfish in the Ross Sea has ... , results from a new monitoring programme for Antarctic toothfish and other top predators carried out in ... McMurdo Sound in 2014 have shown toothfish catch rate, fish size and fish age similar to those observed ...
Meeting Document : WG-FSA-15/P01 : Autor(es): S.J. Parker, S. Mormede, A.L. DeVries, S.M. Hanchet and R. Eisert
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COMPARISON OF THE PRECISION OF DIRECT VERSUS AGE LENGTH KEY METHODS OF ESTIMATING CATCH-AT-AGE PROPORTIONS
) of fish in the catch, determining the ages in the sample, and calculating proportions in each age ... class. This “direct” method can be replaced by the age length key (ALK) method if there are in addition ... the extra information in the LF sample to calculate proportions by age by multiplying the probability ... otoliths removed until a fixed number of fish in each length bin have been obtained and further sampling ...
Meeting Document : WG-FSA-09/22 Rev. 1 : Autor(es): S.G. Candy (Australia)
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Abundance and trends of Type B killer whales (Orcinus orca) around the western Antarctic Peninsula
(Orcinus orca), represented in this area by three phenotypically, genetically and culturally distinct ... , B2 = 13,621 photographs) to estimate abundance in the coastal waters of the WAP during austral ... summers from 2008/09 to 2013/14. Both forms typically occurred close to the WAP coastline in the austral ... ) for hypothesized physiological maintenance migrations. Both types were mostly sympatric in their ...
Meeting Document : WG-EMM-18/16 : Autor(es): H. Fearnbach, J.W. Durban, D.K. Ellifrit and R.L. Pitman
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Estimating food consumption of marine predators: Antarctic fur seals and macaroni penguins
and macaroni penguin Eudyptes chrsolophus) that feed on krill in the Southern Ocean were used as ... sensitive to uncertainty in some demographic variables, particularly the annual survival rate and total ... offspring production. Uncertainty in the measurement of metabolic rate led to a positive bias in the mean ... amount of food consumed. Uncertainty in most other variables had little influence on the estimated food ...
Meeting Document : WG-EMM-02/23 : Autor(es): I.L. Boyd (United Kingdom)
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The food and feeding ecology of the white-chinned petrel Procellaria aequinoctialis at South Georgia
the chick-rearing period in 1986 by quantitative analysis (by weight, frequency of occurrence and ... ; fish and squid occurred In 67% and 35% of samples and formed 33% and 19% of the diet by weight ... , respectively. Decapods, amphipods and salps occurred in a few samples. The fish were mainly lanternfish ... (Myctophidae) of 8 species (chiefly in the genera Electrona and Gymnoscopelus), forming 80% by numbers and 52 ...
Meeting Document : WG-CEMP-94/14 : Autor(es): J.P. Croxall, A.J. Hall, H.J. Hill, A.W. North and P.G. Rodhouse (United Kingdom)
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RESOURCES EVALUATION OF ANTARCTIC KRILL EUPHAUSIA SUPERBA DANA USING AREAL TRAWLING AND HYDRO-ACOUSTIC DATA
analyses procedures applied for trawling and hydro-acoustic sampling have to in compliance with the rules ... revealed. Standard measures for the population densities of krill in natural habitat are not available ... , thus it is principally impossible to structure systems and random errors in evaluating process, to ... krill and minimizing miscalculations in evaluations of congestions. Evaluations regime applied for the ...
Meeting Document : WG-SAM-08/P01 : Autor(es): L.A. Kovalchuk (Ukraine)
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Summary of the work of the CEP on Marine Protected Areas
topic of Marine Protected Areas (MPA’s) in discussions of the Committee for Environmental Protection ... (CEP) since 1998. The most important discussions, including active cooperation with CCAMLR, began in ... interests in spatial marine protection and concluded that issues relating to spatial protection and ... preclude the development by the CEP of ASPAs and ASMAs which have in whole or in part a marine component ...
Meeting Document : WS-MPA-11/04 : Autor(es): Antarctic Treaty Secretariat, c/o Dr P. Penhale, CEP Representative to the CCAMLR MPA Workshop
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Criteria for the Selection of Marine Protected Areas (MPAs)
Abstract: Selection criteria have been widely advocated as a tool to assist in the identification ... ). The application of selection criteria can assist in evaluating candidate sites, prioritising areas ... criteria might be applied in conjunction with bioregionalisation analysis to support the systematic ... selection criteria for protected areas, both in the context of the Antarctic Treaty System and in other ...
Meeting Document : SC-CAMLR-XXVI/BG/24 : Autor(es): Delegation of the United Kingdom
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Report on the activities of the Scientific Committee on Antarctic Research (SCAR) 2005/06SCAR Observer to CCAMLR
Delegates Meeting and Open Science Conference held in Hobart in July 2006, progress with the new Evolution ... and Biodiversity in the Antarctic (EBA) and the Census of Antarctic Marine Life (CAML) projects. CAML ... to gather information on marine biodiversity in Antarctic and SCAR has established a new Action Group ... on marine acoustic studies at the University of Cadiz, Spain in January 2006. A summary is provided ...
Meeting Document : CCAMLR-XXV/BG/22 : Autor(es): SCAR Observer to CCAMLR(G. Hosie, Australia)