Resultados de la búsqueda
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Glider-based estimates of Antarctic krill in Bransfield Strait, and the West shelf off Livingston Island, Antarctica
those from ship-based surveys historically conducted by the U. S. Antarctic Marine Living Resources ... broad-scale surveys conducted by the U.S. AMLR Program were 55 and 43 g m-2, for January and February ... the area of ship surveys to overlap with the area surveyed by the glider was 79 g m-2. Mean biomass ... density estimated from small-scale nearshore surveys conducted by the U.S. AMLR Program from 2005 to 2007 ...
Meeting Document : WG-EMM-2019/13 : Autor(es): C. Reiss, A. Cossio, G. Cutter, J. Walsh and G. Watters
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THE DIET OF THE ANTARCTIC TOOTHFISH IN THE ROSS SEA
Abstract: This brief review documents the species composition of prey consumed by the Antarctic ... by both frequency of occurrence and dry weight. P. antarcticum is 71% by occurrence and 89% by weight ...
Meeting Document : WG-EMM-09/16 : Autor(es): J.T. Eastman and A.L. DeVries (USA)
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Warming effects in the Western Antarctic Peninsula Ecosystem: the role of population dynamic models for explaining and predicting penguin trends
Abstract: The Western Antarctica Peninsula and Scotia Sea ecosystems appear to be driven by ... influenced by the inter-annual variability in the sea-ice extent and krill biomass. In this paper we ... . Chinstrap penguins were only influenced by krill abundance. The contrasting population trends of Adelié and ... Gentoo penguins appear to be better explained by the “sea-ice hypothesis”. We think that proper ...
Meeting Document : WG-EMM-12/18 : Autor(es): M. Lima and S.A. Estay (Chile)
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Antarctic's pelagic ecosystem: how environmental change will affect Salpidae population structure
crustacean has been recorded, followed by an increase in the population of the gelatinous zooplankter Salpa ... this species’ development. The central part of the Drake Passage was characterized by a dominance of ... Island was the Salpidae population characterized by slowed, or even stopped reproduction. The immense ... reproduction efficiency observed in the Salpa thompsoni population was mostly induced by beneficial thermal ...
Meeting Document : WG-EMM-15/P08 : Autor(es): A.W. Słomska, A.A. Panasiuk-Chodnicka, M.I. Żmijewska and M.K. Mańko (Poland)
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Dominio 1 Propuesta Preliminar de Área Marina Protegida PARTE C: Análisis de Biodiversidad por zonas de AMP
led by Argentina and Chile. In particular, this paper provides a biodiversity analysis by zone for the ... the conservation objectives established by the Convention, for the designation of MPA in Antarctica ... Proposal PART C: Biodiversity Analysis by MPA zones Microsoft Word File: sc-xxxvi-bg-21.doc Approval ...
Meeting Document : SC-CAMLR-XXXVI/BG/21 : Autor(es): Delegations of Argentina and Chile
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Age determination of Antarctic krill using size, fluorescence, and image analysis techniques
methods indicate 6 year classes for adult krill. Correspondence between the ages determined by the two ... techniques is generally within one year. The animals were also analyzed by a computerized image analysis ... constructed to relate the image analysis parameters to age approached 90% for the ages defined by length ...
Meeting Document : SC-CAMLR-VI/BG/48 : Autor(es): M.S. Berman, A.L. McVey and G. Ettershank (USA)
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Tagging larger toothfish, methods and equipment
underpinned by a tag and recapture programme, based on Antarctic toothfish Dissostichus mawsoni. The tagging ... details a number of methods and presents plans of some equipment used by New Zealand vessels operated by ...
Meeting Document : WG-FSA-07/36 : Autor(es): J.M. Fenaughty (New Zealand)
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Project of a software catalog of skeletal elements from Antarctic fish species, including some identification facilities
by bioenzyme and compared with the aim to provide a computer supported identification system ... by a simple tool to compare the same skeletal elements of different species. In the database most of ... ) are represented by pictures, otoliths and vertebrae included. Furthermore cooperation with other ...
Meeting Document : WG-FSA-05/35 : Autor(es): J. von Busekist, M. Vacchi and G. Albertelli (Italy)
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How fast do demersal longlines sink?
and are important in efforts to minimise seabird by-catch in longline fisheries. We measured sink ... rates in still water of longlines made by Fiskevegn, the world’s leading manufacturer of demersal ... 18 cm/second for Silver lines of the same diameter. Samples of lines set by hand in still water sank ...
Meeting Document : WG-FSA-02/25 : Autor(es): G. Robertson (Australia), E. Moe, R. Haugen (Norway) and B. Wienecke (Australia)
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Longterm monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)
approach introduced by de la Mare (1994a). The high interannual variability of krill recruitment is ... confirmed by the present analysis. Results are compared for one (R1) and two year old (R2) age classes ... . Statistically significant fluctuations in krill density over the period 1977 to 1994 are also confirmed by this ...
Meeting Document : WG-EMM-96/45 : Autor(es): de la Mare, W., Loeb, V., Siegel, V.