Résultats de la recherche
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Features of chronology and breeding success of Pygoscelis papua and Pygoscelis adeliae penguins in the Wilhelm Archipelago (CCAMLR Subarea 48.1)
Abstract: We aim to investigate the qualitative changes in the habitats of two most common ... (Adelie) penguins in the CCAMLR Subarea 48.1 under the impact of climate changes and krill fishery. To ... minimize the effect of human disturbance on the breeding success and survival of chicks and avoid ... disturbance to the penguins, the new method of registration using time-lapse cameras have been installed in ...
Meeting Document : SC-CAMLR-XXXVII/BG/05 : Auteur(s): I.V. Dykyy, G.P. Milinevsky, O.L. Savitsky, D.G. Lutsenko, P.B. Khoetsky, M.F. Veselsky, V.M. Smagol, A.O. Dzhulay, J.V. Tsaryk, K.M. Nazaruk, A.T. Zatushevsky, A.O. Simon and M.A. Telipska
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STRUCTURE OF THE WATER MASSES AND KRILL DISTRIBUTION IN THE CENTRAL AND EASTERN PARTS OF THE ATLANTIC ANTARCTIC AREA
Abstract: The data of 18 expeditions fulfilled by AtlantNIRO during 1970-2000 in the central and ... eastern part of the Area 48 (Subareas 48.4 and 48.6) were summarized. Distribution of krill was analyzed ... with reference to the structure and dynamics of the water masses in the area of the Southern Sandwich ... Islands arc, the Bouveau Island, the Maude seamount, the southern part of the Lazarev Sea and up to the ...
Meeting Document : WG-EMM-11/24 : Auteur(s): V.N. Shnar and S.M. Kasatkina (Russia)
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Accounting for food requirements of seabirds in fisheries management – the case of the South African purse-seine fishery
bergii. Availability of prey is thought to influence the populations of these species, but their food ... requirements have not been accounted for in management of the purse-seine fishery on sardine and anchovy. Means ... of identifying and attaining target populations of predators that are dependent on forage fish prey ... conservation status of a species may prove useful in determining minimum viable populations, and that the use ...
Meeting Document : WG-EMM-04/28 : Auteur(s): R.J.M Crawford (South Africa)
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Theoretical considerations for estimating the density of cohorts and mean recruitment of Patagonian toothfish (Dissostichus eleginoides) based on research trawl survey data
assessing the long-term yield for toothfish fisheries in CCAMLR uses estimates of density of juvenile ... toothfish derived from research trawl surveys as an estimate of absolute abundance of recruitment to the ... fishery. At the 2003 meeting of WG-FSA a number of inconsistencies were identified in the estimation of ... the recruitment series for Subarea 48.3. In light of this, the Scientific Committee agreed that there ...
Meeting Document : WG-FSA-04/92 : Auteur(s): C.R. Davies, E.M. van Wijk and A.J. Constable (Australia)
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Maximum entropy reconstruction of stock distribution and inference of stock density from line-transect acoustic survey data
distribution from acoustic line-transect data. MaxEnt is founded on the bedrock of probability theory and ... allows the most efficient possible use of known data in the inference process. The method takes explicit ... account of spatial correlation in the observed data and seeks to reconstruct a distribution of density ... maximized. The method is iterative and uses the Bayesian approach of evaluating the posterior probability of ...
Meeting Document : WG-EMM-02/35 : Auteur(s): A.S. Brierley, S.F. Gull and M.H. Wafy (United Kingdom)
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Utilising data from ecosystem monitoring for managing fisheries: development of statistical summaries of indices arising from the CCAMLR Ecosystem Monitoring Program
Abstract: A potential method is presented for combining data collected as part of the CCAMLR ... ecosystem monitoring program (CEMP) into a single index for each of predator, prey and environmental ... parameters. The paper is divided into four main parts. The first part develops the proposed method of forming ... summary indices, which is based on the usual theory of multivariate statistics and takes into account the ...
Meeting Document : WG-EMM-00/14 Rev. 1 : Auteur(s): W. de la Mare and A. Constable (Australia)
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Some specific characteristics of Dissostichus eleginoides biology in the vicinity of the Kerguelen Islands (Division 58.5.1)
Abstract: For recent years Dissostichus eleginoids is the main target species of trawling and ... long-line fisheries in the vicinity of the Kerguelen Islands. Results of research made by the author on ... present paper. Regular direct distribution of size groups D. eleginoides in depth range within the fishing ... area on the northern slope of shelf was revealed. Difference in feeding spectrum of these groups was ...
Meeting Document : WG-FSA-96/16 : Auteur(s): Pshenichnov, L.K.
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CCAMLR ecosystem monitoring program standard methods: determination of sex of Adelie penguins
Abstract: The suggestion that sex of Adélie penguins, Pygoscelis adeliae, might be assigned by ... observing which member of the pair (the male) takes the first long incubation shift (Anon. 1991) was ... examined for each of the 1990–91, 1991–92 and 1992–93 breeding seasons. There was an 8- or 9-day period ... when more than 90% of the incubating birds were male and a 6- or 7-day period when more than 90% of the ...
Meeting Document : WG-CEMP-94/08 : Auteur(s): K.R. Kerry, J.R. Clarke and G.D. Else (Australia)
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Development of a fine-scale model of land-based predator foraging demands in the Antarctic
Abstract: The CCAMLR Secretariat has been requested to provide annual calculations of the catch ... of krill within the critical period-distance of land-based predators in Subareas 48.1 and 48.2 (100km ... from colonies, December- March). This index of the overlap of predators and the fishery is unsuitable ... for a number of reasons. An alternative method of calculating an index of fishery-predator interaction ...
Meeting Document : WG-Joint-94/08 : Auteur(s): D.J. Agnew and G. Phegan (Secretariat)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2014
provides the scientific basis for the evaluation of marine protected areas (MPAs) in the Weddell Sea ... . Please note, that the current state of the background document presents a comprehensive yet incomplete ... structure of the document reflect also its main objectives, i.e. (i) to set out the general background and ... context of the establishment of MPAs, (ii) to describe the boundaries of the Weddell Sea MPA Planning Area ...
Meeting Document : SC-CAMLR-XXXIII/BG/02 : Auteur(s): Delegation of Germany