Resultados de la búsqueda
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A three-frequency method to determine the abundance and the size of two euphausiid species (Euphausia superba and Euphausia crystallorophias)
role in the Ross Sea pelagic ecosystem (Marr, 1962; Azzali et al., 1999). To estimate the abundance of ... obtain information about the mean size (length) of the organisms in each aggregation. In principle the ... , and directly from net samplings. The mean size of the crustaceans can be estimated from “in situ ... catches. Unfortunately the precision and credibility of this method are often insufficient when applied in ...
Meeting Document : WG-EMM-01/63 : Autor(es): M. Azzali, J. Kalinowksi, G. Lanciani and I. Leonori (Italy)
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Relative selectivity of four sampling methods using traps and trawls for male snow crabs (Chionoecetes opilio)
deployed during the day. and (4) bottom trawl deployed at night. Catches were characterized in terms of ... crabs captured in large-meshed traps was larger than those captured in small-meshed traps which, in turn ... , were larger than those caught in the trawl; the size of crabs caught in the trawl at night was larger ... than those caught during the day; 2) large-clawed crabs predominated in the catches from traps whereas ...
Meeting Document : WS-CRAB-93/11 : Autor(es): J.M. Hoenig and E.G. Dawe (USA)
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Review of the 2007 budget, draft 2008 budget and forecast budget for 2009
. The presentation is in the format determined by the Commission at its 2002 Meeting. The expenditure ... surplus includes an unbudgeted, half-year New Member Contribution of A$53 312 in respect of the People’s ... Republic of China, which applied to become a member of the Commission in July 2007. General Services Staff ... salary increases in 2007 amounted to 6.5%, but part of this is offset by an increase in the Staff ...
Meeting Document : CCAMLR-XXVI/04 : Autor(es): Executive Secretary
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Marine debris surveys at Bird Island, South Georgia 1990 to 1995
reduce entanglement of marine mammals and birds. Overall, and in all but one year, the highest incidence ... category overall (76 %), and in all samples since 1991, was pieces of synthetic lone as used in the ... %) and polythene bags (6 %) were the next commonest items. There was a substantial increase in the number ... of items found ashore in 1995 which coincided with an apparent increase in long-line fishing effort ...
Meeting Document : CCAMLR-XV/BG/05 : Autor(es): Delegation of the United Kingdom
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Conflict or co-existence? Foraging distribution and competition for prey between Adélie and chinstrap penguins
and ecologically very similar, have very similar diet and breed sympatrically in the Scotia Arc from ... penguins and 24 chinstrap penguins were used to compare foraging distributions. In both years the diet of ... both species was exclusively Antarctic krill (Euphausia superba) of the same size range. In a year of ... between the two species, however, in a year of normal resource availability (2001) there was no such ...
Meeting Document : WG-EMM-02/15 : Autor(es): A.S. Lynnes, K. Reid, J.P. Croxall and P.N. Trathan (United Kingdom)
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The biology of the spiny icefish (Chaenodraco wilsoni Regan, 1914)
Abstract: The most abundant icefish species observed in catches off the northern tip of the ... Antarctic Peninsula in the last 25- 30 years has been the spiny icefish Chaenodraco wilsoni Regan 1914. C ... Joinville – D’Urville Islands (CCAMLR Statistical Subarea 48.1) and in the Cosmonauts and Cooperation Seas ... and Prydz Bay in the Indian Ocean sector (CCAMLR Statistical Division 58.4.2). This paper presents new ...
Meeting Document : WG-FSA-07/P1 : Autor(es): K.-H. Kock, L.V. Pshenichnov, C.D. Jones, J. Gröger and R. Riehl. (Polar Biol., 31 (3): 381–393 (2007))
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Monitoring krill population variability using seabirds and seals at South Georgia – new samplers provide new insights
Abstract: Variability in the Southern Ocean is often characterised by fluctuations in the ... South Georgia interannual variability in the krill-based marine ecosystem has historically been most ... frequently detected in the response of upper-trophic level predators. Analysis of the changes in the ... population size structure of krill in the diet of Antarctic fur seals Arctocephalus gazella, particularly ...
Meeting Document : WG-EMM-04/63 : Autor(es): K. Reid, E.J. Murphy, J.P. Croxall and P.N. Trathan (United Kingdom)
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Multiple acoustic estimates of krill density at South Georgia during 2000/2001 reveal significant intra-annual and spatial variability
around South Georgia in the 2000/2001 season: in October 2000 (early-season); during late December ... / early January 2000/2001 (mid-season), and in March 2001 (late-season). The surveys were the first in a ... early1980s). We hoped that conducting several surveys in one season would provide information on short-term ... variability that could be used to set data from more restricted “snap-shot” cruises in a broader context. The ...
Meeting Document : WG-EMM-01/15 : Autor(es): A.S. Brierley, C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst (United Kingdom)
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EXPECTED TAG RECAPTURE RATES FROM NEW AND EXPLORATORY FISHERIES FOR DISSOSTICHUS SPP.
Abstract: Tag recapture rates in new and exploratory Dissostichus spp. fisheries in the southern ... Indian Ocean sector of the CCAMLR area are examined. In particular, the potential for tagging programs in ... new and exploratory fisheries to yield sufficient data to be of use in determining TAC’s in the early ... , tag detection rates, natural mortality, fish movement out of the fishery, and IUU removals in order to ...
Meeting Document : WG-FSA-08/63 : Autor(es): J.P. McKinlay and D.C. Welsford (Australia)
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Educational poster on hook ingestion
hooks discarded in fish heads which ingestion by seabirds, especially wandering albatrosses which are ... large enough to swallow fish heads whole (SC-CAMLRR-XXI/BG/7). For example, in 2001/02 the scientific ... observer on the F/V Argos Helena estimated that >15,000 fish heads were discarded with hooks still in ... them. The hooks found in albatross colonies at South Georgia in years prior to 2001/02 were of the type ...
Meeting Document : WG-FSA-07/20 : Autor(es): G. Robertson (Australia)