Résultats de la recherche
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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 : Auteur(s): S.J. Parker, S. Mormede, A.L. DeVries, S.M. Hanchet and R. Eisert
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WG-EMM-PSW-08
ESTIMATES FOR CRABEATER, WEDDELL AND LEOPARD SEALS AT THE ANTARCTIC PENINSULA AND IN THE WESTERN WEDDELL SEA ... TEMPORAL VARIATION IN ATTRIBUTES OF ADELIE PENGUIN BREEDING POPULATIONS: IMPLICATIONS FOR UNCERTAINTY IN ... FLYING SEABIRDS IN AREA 48; A REVIEW OF POPULATION ESTIMATES, COVERAGE AND POTENTIAL GAPS IN SURVEY ... (Australia) WG-EMM-PSW-08/13 INCOMPLETE SEARCH EFFORT AS A POTENTIAL SOURCE OF BIAS IN BROAD-SCALE ESTIMATES ...
Meeting
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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 : Auteur(s): 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 : Auteur(s): H. Fearnbach, J.W. Durban, D.K. Ellifrit and R.L. Pitman
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Whale depredation – Data collection guidelines
around the world, including many toothfish fisheries in the Southern Ocean, are seriously affected by ... depredation activity in the Southern Ocean is due to interactions with odontocetes (toothed whales ... workshop dedicated to odontocete depredation on demersal longlines operating in high latitudes was ... organised by the Coalition of Legal Toothfish Operators (COLTO) in Punta Arenas, March 2016. This workshop ... fisheries operating around the world, including many toothfish fisheries in the Southern Ocean, are ... the effects of depredation. Most depredation activity in the Southern Ocean is due to interactions ... demersal longlines operating in high latitudes was organised by the Coalition of Legal Toothfish ... Operators (COLTO) in Punta Arenas, March 2016. This workshop emphasised the urgent need to find global ...
Document : Site Section: Science
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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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): Delegation of the United Kingdom