Resultados de la búsqueda
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Updated assessment of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Crozet Islands (Subarea 58.6)
Abstract: This paper presents the latest developments in models for Crozet following the more ... recent ones (Sinègre & Duhamel, 2016) with an updating of input data from the more recent years (up ... to 2016/17 season) and a reassessment of stocks taking into account the previous remarks of the WG ... Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Crozet Islands (Subarea 58.6) Approval ...
Meeting Document : WG-FSA-17/59 : Autor(es): R. Sinegre, G. Duhamel and J.B. Lecomte
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CURRENT ABUNDANCE OF ADÉLIE PENGUIN BREEDING POPULATIONS ALONG THE KEMP AND MAC.ROBERTSON LAND COASTS, EAST ANTARCTICA: APPLICATION OF NEW SURVEY AND ESTIMATION METHODS FOR BROAD-SCALE POPULATION ASSESSMENT
Abstract: Application of new methods for estimating the abundance of breeding Adélie penguin ... populations along the Kemp and Mac.Robertson Land coasts of east Antarctica are described. Methods include use ... availability using ICESCAPE software. The surveys revealed a considerably larger population of Adélie penguins ... breeding in this region than was previously known. The larger population estimates are at least partly due ...
Meeting Document : WG-EMM-11/31 : Autor(es): C. Southwell, J. McKinlay, K. Newbery, L. Emmerson, M. Low, R. Pike, D. Wilson, D. Southwell and L. Einoder (Australia)
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ESTIMATES OF NUMBERS OF KELP GULLS AND KERGUELEN AND ANTARCTIC TERNS BREEDING AT THE PRINCE EDWARD ISLANDS, 1996/97–2008/09
in December 2001 and December 2008. Four species are regular breeders at the islands: subantarctic ... tern S. virgata. The latter three species currently each have populations of below 150 breeding pairs ... at the islands. Kelp gull numbers appear to be relatively stable though they may have decreased since ... the 1980s. Kerguelen tern numbers decreased and then recovered at Marion Island but numbers of the ...
Meeting Document : WG-EMM-10/P5 : Autor(es): P.A. Whittington, R.J.M. Crawford, B.M. Dyer and P.G. Ryan
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Comparison of long-term trends in abundance, recruitment and reproductive success of five populations of Pygoscelis penguins in the South Shetland Islands, Antarctica
Abstract: Responses of predator populations to environmental variability in the Antarctic have ... Livingston Island, South Shetland Islands, Antarctica, were examined to compare up to 25 years of data on the ... , recruitment, and summer breeding performance of the Adélie (P. adeliae), gentoo (P. papua), and chinstrap ... penguins (P. antarctica). In general, the different trends in abundance and recruitment indices for each ...
Meeting Document : WG-EMM-06/21 : Autor(es): J.T. Hinke (USA), K. Salwicka (Poland), S.G. Trivelpiece, G.M. Watters and W.Z. Trivelpiece (USA)
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Outline details of the proposed aerial photographic survey at South Georgia for estimating breeding population sizes of land-based predators
Abstract: This paper describes current research plans to estimate the size of land-based marine ... with commercial fisheries. The research will also develop methodologies that reliably assess trends in ... the abundance of these populations. The research will focus upon predator species that depend upon ... potential for resource competition under existing fisheries management policies. The research will also ...
Meeting Document : WG-EMM-01/24 : Autor(es): P. Trathan and D. Briggs (United Kingdom)
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Towards a closer cooperation between CCAMLR and the IWC
Abstract: At the 1997 Meetings of the Scientific Committee of CCAMLR and its CCAMLR Working Group ... and the IWC were identified: Coordination of CCAMLR and IWC research activities; Analysis of ... ; Considerations for re-establishing minke whales as a monitoring species in the CCAMLR Ecosystem Program (CEMP ... the IWC could best be achieved by forming a small liaison group with IWC-SC which could work (mostly ...
Meeting Document : SC-CAMLR-XVII/BG/03 : Autor(es): CCAMLR Observer (K.-H. Kock, Germany)
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Effects of sea-ice extent and krill or salp dominance on the Antarctic food web
trophic levels in the Antarctic marine food web. The pelagic tunicate Salpa thompsoni can also be ... important during spring and summer through the formation of extensive and dense blooms. Although salps are ... chlorophyll-a that indicate that there is a degree of competition between krill and salps. Our analysis of the ... decreased frequency of winters with extensive sea-ice development over the last five decades. Our data ...
Meeting Document : WG-EMM-97/73 : Autor(es): Hewitt, R., Trivelpiece, S., Fraser, W., Holm-Hansen, O., Siegel, V., Trivelpiece, W., Loeb, V.
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Distribution and abundance of larval fishes collected in the western Bransfield Strait region, 1986–87
samples collected in the western Bransfield Strait region during four RACER program cruises, December ... , and Trematomus scotti, numerically dominated the total catch. Two typically abundant species in this ... differences appear to be responsible for substantial shifts in species abundance relations between the two ... types of net hauls. Gear differences, the restricted geographical coverage, and between year variability ...
Meeting Document : SC-CAMLR-VIII/BG/36 : Autor(es): Delegation of USA
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Patterns and processes in the distribution and dynamics of Antarctic krill
Abstract: A general framework is presented to develop, test and integrate component models of the ... abundance. Incremental models should then be compared to statistical descriptions of the observed ... distribution patterns at various scales of observation to ascertain the plausibility of the model and identify ... critical processes to be added. An analysis of spatial distribution of krill in the Bransfield Strait area ...
Meeting Document : SC-CAMLR-VII/BG/20 : Autor(es): United States of America
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Priority research surveys to address uncertainties in the assessment of toothfish in Subareas 88.1 and 88.2
Abstract: We have identified key uncertainties in the stock assessment of Antarctic toothfish in ... . Given the continued uncertainty arising from the relative paucity of abundance data, age and length ... should be given a high priority by the Scientific Committee. We recommend the Scientific Committee invite ... research plans involving multiple Members could be generated either by the Scientific Committee or in its ...
Meeting Document : WG-FSA-13/55 : Autor(es): S. Hanchet, B. Sharp and S. Parker (New Zealand)