Résultats de la recherche
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Progress report of Chilean research on albatross ecology and conservation
long-line fishery is similar to that found in CCAMLR waters. The objective of this paper is to inform ... Abstract: Two species of albatross breed in Chile, namely Thalassarche melanophrys and T ... two different management regimes. This fact and the article XI of the CCAMLR Convention, suggests the ... need of harmonizing conservation measures in both areas. In this progress report we describe the main ...
Meeting Document : WG-FSA-02/18 : Auteur(s): J. Arata and C.A. Moreno (Chile)
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Preliminary announcement of ‘Workshop on Krill Culturing Techniques’
techniques’ at Port of Nagoya Public Aquarium, Japan, in September 2002. Port of Nagoya Public Aquarium ... . Developing techniques of culturing krill in large number is thought to be a major break through for further ... understanding of krill biology. However, these achievements are not effectively gathered to provide a standard ... methodology. The aim of the workshop is to share the knowledge to date about the methodology of krill ...
Meeting Document : WG-EMM-01/37 : Auteur(s): Delegation of Japan
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Seasonal and interannual variability of krill, salp and other zooplankton populations in the northwest Antarctic Peninsula region: summer 2001 in relation to the Long-Term AMLR Data Set
assess seasonal variations in distribution, abundance and demography of Antarctic krill (Euphausia ... superba) and salps (Salpa thompsoni), and distribution and abundance of biomass dominant copepod species ... . Increased abundance relative to 1999 resulted in part from recruitment of the 1998/99 and 1999/2000 year ... classes as indicated by modest proportions of juvenile and immature stages. Large proportions of advanced ...
Meeting Document : WG-EMM-01/45 : Auteur(s): V. Loeb (USA)
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Interannual variation in the autumn diet of the gentoo penguin Pygoscelis papua at Laurie Island, Antarctica
Abstract: The diet of the gentoo penguin Pygoscelis papua was investigated during three different ... autumn periods at Laurie Island, South Orkney Islands (60°46’S, 44º42’W), Antarctica. Stomach contents of ... , species of the family Nototheniidae predominated in the diet with G. gibberifrons as the most important ... T. newnesi were also well represented in the three sampling periods. A total of 1628 squid lower ...
Meeting Document : WG-EMM-99/19 : Auteur(s): N. Coria, M. Libertelli, R. Casaux and C. Darrieu (Argentina)
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Revision of the fishery–foraging overlap model
Abstract: The fishery-foraging model of Agnew and Phegan (1995) was reviewed by the Working Group ... was related to the total amount of krill removed from the foraging area during December to March. The ... Secretariat was tasked with the revision of the model, including modifications to the model in terms of both ... adjustments to temporal aspects of the underlying model and changes in the form of the index of overlap. The ...
Meeting Document : WG-EMM-98/05 : Auteur(s): Secretariat
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ANTARCTIC TOOTHFISH STOCK ASSESSMENT IN DIVISION 58.4.1 ON THE BASIS OF CATCH AND CPUE DATA
Abstract: An attempt to use reported catch and CPUE data based on data of observers in the ... assessment of Antarctic toothfish stock in Division 58.4.1 is made. Unlike some previous results obtained for ... this division (e.g. Agnew et al., 2008), the assessment was intended to be independent of estimates of ... toothfish stock biomass in the Ross Sea. As a result of implementation of an age-structured and a dynamic ...
Meeting Document : WG-FSA-09/14 Rev. 1 : Auteur(s): D. Vasilyev, K. Shust, A. Petrov, V. Tatarnikov and I. Istomin (Russia)
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Population dynamics of black-browed and grey-headed albatrosses Diomedea melanophris and D. chrysostoma at Bird Island, South Georgia
Abstract: Population dynamics of Black-browed and Grey-headed Albatrosses were studied at Bird ... Albatross colonies decreased, at an average rate of 1.8% per annum. Although the total Black-browed ... Albatross population increased (at 0.8% pa.), 14 of the 23 colonies (including both study colonies ... ) decreased. Black-browed Albatrosses follow an annual breeding cycle, with over 80% of birds successful in ...
Meeting Document : SC-CAMLR-XII/BG/21 : Auteur(s): Delegation of United Kingdom
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A brief exploitation of the stone crab Lithodes murrayi (Henderson) off south west Africa, 1979/80
uneconomic level. The extent of the L. murrayi grounds is examined on the basis of catch-per-unit-effort data ... . The species is largely confined to a bathymetric corridor of 500–700 m off South West Africa. Prior to ... crabs were present in small numbers over a much larger area. Over 90 per cent of the fishing effort was ... applied in this area of high concentration, accounting for almost 95 per cent by mass of the total catch ...
Meeting Document : WS-CRAB-93/21 : Auteur(s): R. Melville-Smith (South Africa)
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Growth and Natural Mortality of Yellowfin Notothenia Patagonotothen guntheri shagensis from Shag Rocks Shelf
Abstract: Regularities of growth are established from the data of age determinations and analysis ... of yellowfin notothenia length-weight composition, mathematical description of length-weight ... dependence and parameters of Bertalanffy equation are given. Natural mortality coefficient, M, calculated by ... six various methods ranged from 0.63 to 1.06. With mean value of M, age and length at optimum ...
Meeting Document : WG-FSA-89/18 : Auteur(s): V.I. Shlibanov (USSR)
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Destruction of Antarctic terrestrial ecosystems by a rapidly increasing fur seal population
Abstract: The terrestrial environment of Signy Island, South Orkney Islands, maritime Antarctic ... past decade there has been a dramatic increase in the number of Antarctic fur seals Arctocephalus ... of seals were present on the island prior to the initiation of commercial hunting in the early 1820s ... . The impact that the continuing increase of these seals had made on the island's terrestrial and ...
Meeting Document : SC-CAMLR-VII/BG/06 : Auteur(s): R.I. Lewis Smith (United Kingdom)