Résultats de la recherche
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CCAMLR spatial management GIS: potential applications for informing the development of a representative system of MPAs
GIS facilitates easy mapping of CCAMLR’s spatial management framework and associated conservation ... measures, and standardises this information in terms of projection and coastline position. Access to ... spatially derived parameters through the database may be useful in the design and implementation of ... protected areas as part of the development of a representative system of Antarctic marine protected areas ...
Meeting Document : WS-MPA-11/20 : Auteur(s): S.M. Grant, S.L. Hill and P.T. Fretwell (UK)
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Geographical aspects of utilising resources of krill (Euphausia superba)
Abstract: This paper presents data on the distribution of E. superba in the Atlantic sector and ... adjacent waters with an emphasis on subregions lying beyond the current fishing grounds of the Scotia Sea ... . In a number of subregions on the periphery of the Weddell Gyre (both to the north and south), as well ... as in the coastal waters of the Antarctic continent, the formation of krill aggregations is variable ...
Meeting Document : WG-EMM-96/05 : Auteur(s): Makarov, R.R.
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Population subdivision and distribution of Euphausia superba in the region of the Antarctic Peninsula and adjacent waters in relation to fishery development
Abstract: Analysis of original and literature data for the past 10 years pertaining to the region ... -of the Antarctic Penunsula and adjacent waters points to a relationship between the distribution of ... krill and the waters of two major circulation systems- those of the Weddell Sea and the Bellingshausen ... Sea inhabited by separate subpopulations of the species. The latter are predominant in the region ...
Meeting Document : SC-CAMLR-VIII/BG/21 : Auteur(s): Delegation of USSR
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Determination of a statistically based survey area suitable for hydroacoustic stock assessment of Euphausia superba in the Elephant Island, King George Island, Bransfield Strait area
Abstract: The selection of a survey area of sufficient size to acount for the migratory behavior ... of krill and based on evaluating the variance structure of sampling within the area from a time ... -series of data from 1981, 1984 and 1978-1989 permitted resolution of inter-year differences in standing ... stock. The two units of sub-area within the site exhibit different patterns of annual distribution, but ...
Meeting Document : SC-CAMLR-VIII/BG/32 : Auteur(s): Delegation of USA
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Considerations on the design and evaluation of surveys for estimating recruitment of Patagonian toothfish (Dissostichus eleginoides) with preliminary outcomes for the Heard Island plateau region (Division 58.5.2)
Abstract: Assessments of long-term sustainable yield using the Generalised Yield Model and the ... setting of total allowable catches (TAC) for Patagonian Toothfish, Dissostichus eleginoides, for the Heard ... design for Division 58.5.2 is reviewed and estimates of optimal distribution of trawl stations among ... strata provided for estimates of abundance of individual pre-recruitment age classes and total abundance ...
Meeting Document : WG-FSA-SAM-04/19 : Auteur(s): Candy, S., Constable, A.J., Davies, C.R.
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Predation release of Antarctic silverfish in the Ross Sea: how sensitive is the conclusion to uncertainties in the diet of Antarctic toothfish over the shelf?
Abstract: Between 2001 and 2013 the number of breeding pairs of Adélie penguins (Pygoscelis ... half a million. It has been suggested that predation release of Antarctic silverfish (Pleuragramma ... antarctica) due to fishing of one of its predators, Antarctic toothfish (Dissostichus mawsoni), could have ... , consumption rates and diets of toothfish and Adélie penguins over the Ross Sea shelf as a first test of the ...
Meeting Document : WG-FSA-15/41 : Auteur(s): M.H. Pinkerton, P. O’B. Lyver, D.W. Stevens, J. Forman, R. Eisert and S. Mormede (New Zealand)
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Model-based mapping of assemblages for ecology and conservation management: A case study of demersal fish on the Kerguelen Plateau
of Common Profile (RCP) to quantify and map the distribution of demersal fish assemblages in an ... ecologically significant region of the Southern Ocean to a) gain ecological and management insights and b ... ) evaluate the utility of the new method for ecoregionalisation. The RCP approach is a multi-species, model ... -based approach that can overcome many limitations of traditional distance-based approaches. It ...
Meeting Document : WS-SM-18/P02 : Auteur(s): N.A. Hill, S.D. Foster, G. Duhamel, D. Welsford, P. Koubbi and C.R. Johnson
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Comparison of estimators of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial Distribution
Abstract: The incorporation of “effective sample size” (ESS) in integrated assessments is an ... approximate but simple way of modelling the distribution of catch-at-age or catch-at-length frequencies using ... frequencies. The ESS applied within the definition of the negative log-likelihood contribution to the ... -length frequency data relative to the other types of data used in integrated assessments of toothfish ...
Meeting Document : WG-SAM-07/7 : Auteur(s): S.G. Candy (Australia)
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Monitoring of relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, South Shetland Islands, in years 2000 to 2003
Abstract: The monitoring program of demersal fish at inshore sites of the South Shetland Islands ... has continued in Potter Cove from 2000 to 2003, covering a continuous sampling period of twenty years ... net catches of fjord fishes of the species Notothenia rossii and Gobionotothen gibberifrons in ... 1983-1999, is still evident. At Potter Cove, higher catches of N. rossii were obtained from 1991 to ...
Meeting Document : WG-FSA-03/89 : Auteur(s): E. Barrera-Oro, E. Marschoff, R. Casaux and B. Gonzalez (Argentina)
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On possibility of using acoustic method to improve quality of Champsocephalus gunnari biomass estimates in Subarea 48.3
Abstract: An attempt has been made to study icefish as an object of acoustic survey basing on the ... acoustic and biological data obtained by Russian RN ATLANTIDA in the area of South Georgia Island (January ... -February 2000). Estimation of possible target strength values was made by a comparison to TS of other fish ... and physical body properties. There has been proved a comparability of Ch.gunnari length frequencies ...
Meeting Document : WG-FSA-00/31 : Auteur(s): S. Kasatkina (Russia)