Resultados de la búsqueda
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Zonal structure of zooplankton communities in the Southern Ocean south of Australia: results from a 2150 km continuous plankton recorder transect
Abstract: The Southern Ocean south of Australia is oceanographically complex, being characterized ... by double branches of the Sub-Antarctic Front (SAF), Polar Front (PF) and Southern Antarctic ... Circumpolar Current (SACCF), in addition to the Southern Boundary (SB) of the ACC. From 25 February to 3 March ... were measured at 1-min intervals in conjunction with CPR samples. Additional physical data for the ...
Meeting Document : WS-BSO-07/P6 : Autor(es): Hunt, B.P.V. and G. Hosie
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Stratification of catch-at-length data using tree based regression: an example using Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea
Abstract: This paper presents a new approach to the stratification of catch-at-length data of ... Antarctic toothfish (D. mawsoni) in the Ross Sea. Tree based regression techniques were used to stratify the ... sampled catch based on the median length of Antarctic toothfish for each set using the observer length ... frequency data. The median lengths were weighted within the regression by the inverse of the variance ...
Meeting Document : WG-FSA-SAM-05/8 : Autor(es): N.L. Phillips, A. Dunn and S.M. Hanchet (New Zealand)
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Physical forcing in the southwest Atlantic: ecosystem control
Abstract: In the southwest Atlantic sector of the Southern Ocean, temporal variability in the ... physical environment has been recorded since the early part of the last century. For example, ocean ... temperature at South Georgia shows the presence of high levels of autocorrelation, with periodicity evident in ... anomaly data for the El Niño 4 region in the Pacific show that variability at South Georgia also reflects ...
Meeting Document : WG-EMM-04/34 : Autor(es): P.N. Trathan, E.J. Murphy, J. Forcada, J.P. Croxall, K. Reid and S.E. Thorpe (United Kingdom)
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A feasibility study for stock assessment of D. mawsoni in the Ross Sea (Subares 88.1 and 88.2) using a tag and recapture experiment
Abstract: This paper reports on a feasibility study into a tag and recapture experiment for the ... purpose of stock assessment of the Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea. An ... -98 to nearly 1800 t in 2002-03. Although some Patagonian toothfish (D. eleginoides) are taken in the ... 90% D. mawsoni) have been tagged and released in the area, from vessels operating in the exploratory ...
Meeting Document : WG-FSA-SAM 03/10 : Autor(es): K.J. Sullivan, N.W.McL. Smith, J. McKenzie and S.M. Hanchet (New Zealand)
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Distribution of the Soviet fishing fleet and catches (CPUE) in Subdivision 48.3 during 1986–1990
Abstract: Analysis of the fishing fleet operation is one of preconditions of krill fishery small ... -scale management units determination. In this work the available data of haul by haul catch statistics ... for the Soviet krill fishery in subdivision 48.3 for 1986-1980 (15 thousand hauls) were analyzed ... . During the fishing season from April to September two basic fishing grounds with a quazi-stationary ...
Meeting Document : WG-EMM-02/63 Rev. 1 : Autor(es): V.A. Sushin, P.C. Gasiukov, A.V. Zimin and S.M. Kasatkina (Russia)
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Subgroup on Assessment Methods: Report to the Working Group on Fish Stock Assessment 2002
Abstract: Over the last two years, discussions in WG-EMM, WG-FSA and the Scientific Committee ... . WG-FSA noted (paragraph 11.3, WG-FSA 2001) that there are substantial difficulties added to the work ... of the assessment subgroup when new quantitative methodologies are introduced and incorporated into ... assessments undertaken during the time of a single meeting of WG-FSA. Issues related to the current procedures ...
Meeting Document : WG-FSA-02/80 : Autor(es): A.J. Constable (Subgroup Coordinator)
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Analysis of krill trawling positions north of the South Shetland Islands (Antarctic Peninsula area), 1980/81–1999/2000
Abstract: Inter- and intra-annual variability of commercial krill trawling positions for the 1980 ... /81 to 1999/2000 seasons in the area to the north of South Shetland Islands were analyzed in relation ... to biological and environmental factors. Commercial fishing perations concentrated on the outer shelf ... in the early 1980’s, along the shelf slope in the mid- to late 1980’s, and were highly variable, from ...
Meeting Document : WG-EMM-01/35 : Autor(es): S. Kawaguchi and K. Segawa
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Utilising data from ecosystem monitoring for managing fisheries: development of statistical summaries of indices arising from the CCAMLR Ecosystem Monitoring Program
Abstract: A potential method is presented for combining data collected as part of the CCAMLR ... parameters. The paper is divided into four main parts. The first part develops the proposed method of forming ... summary indices, which is based on the usual theory of multivariate statistics and takes into account the ... covariance between parameters. The second part reports on a Monte Carlo simulation study that examines the ...
Meeting Document : WG-EMM-00/14 Rev. 1 : Autor(es): W. de la Mare and A. Constable (Australia)
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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 ... on Ecosystem Monitoring and Management and its Subgroup on Statistics in 1997. The review found that ... the index calculated in that model did not directly measure overlap between penguin foraging demands ... and the krill fishery in waters around the South Shetland Islands and Antarctic Peninsula, but rather ...
Meeting Document : WG-EMM-98/05 : Autor(es): Secretariat
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THE RESEARCH PROJECT TO DIGITIZE HISTORICAL SOVIET KRILL FISHING EXPEDITION DATA
Abstract: The research project to digitize former Soviet krill fishing research, exploratory and ... commercial expedition’s data has been started in Ukraine at the Southern Research Institute of Marine ... expeditions in Southern Ocean between the years of 1972-1992. The main purpose of these expeditions was to ... collect data and samples and to create an estimation of the commercial exploitation of the Antarctic krill ...
Meeting Document : WG-EMM-09/30 : Autor(es): L. Pshenichnov and G. Milinevsky (Ukraine)