Resultados de la búsqueda
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Spectra analysis of Drake Passage Oscillation Index (DPOI) from 1952 to 2003, Antarctica
Abstract: An assessment of the environmental processes influencing variability in the recruitment ... , Argentina, and Base Esperanza, at the tip of the Antarctic Peninsula, sea ice cover and chlorophyll-a in the ... and density of Antarctic krill (Euphausia superba DANA) is important as variability in krill stocks ... affects the Antarctic marine ecosystem as a whole. Naganobu et al. (1999) had assessed variability in ...
Meeting Document : WG-EMM-04/46 : Autor(es): M. Naganobu and K. Kutsuwada (Japan)
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An attempt to derive a composite index of abundance from acoustic surveys and fishery data
distribution of fishing effort in the Chilean krill fishery indicate an area of high krill density wrapping ... around the northwestern end of Elephant Island during the austral summer of 1992. In this area, the ... . In addition, the data suggest that the abundance of krill in the Elephant Island area can change ... the shelf break north of Elephant Island, particularly in the area where it wraps around the western ...
Meeting Document : WG-Krill-94/14 : Autor(es): R.P. Hewitt (USA), V. Marín (Chile) and D. Demer (USA)
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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 ... , 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 ... small-clawed animals predominated in the trawl catches; 3) soft-shell crabs were more common in trawl ...
Meeting Document : WS-CRAB-93/11 : Autor(es): J.M. Hoenig and E.G. Dawe (USA)
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AN ECOSYSTEM-BASED MANAGEMENT PROCEDURE FOR KRILL FISHERIES: A METHOD FOR DETERMINING SPATIALLY-STRUCTURED CATCH LIMITS TO MANAGE RISK OF SIGNIFICANT LOCALISED FISHERIES IMPACTS ON PREDATORS.
of predator-prey dynamics beyond that evident in the data. It is a natural extension of the current ... advice can be updated as improvements are made in any component of the procedure, including the provision ... . This framework formalises the decisions that need to be made in dealing with an ensemble of food web ... management system that can ensure CCAMLR is able to respond to trends in the status of the ecosystem ...
Meeting Document : WG-SAM-08/16 : Autor(es): A. Constable and S. Candy (Australia)
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An ecosystem-based management procedure for krill fisheries: a method for determining spatially-structured catch limits to manage risk of significant localised fisheries impacts on predators
of predator-prey dynamics beyond that evident in the data. It is a natural extension of the current ... advice can be updated as improvements are made in any component of the procedure, including the provision ... . This framework formalises the decisions that need to be made in dealing with an ensemble of food web ... feedback management system that can ensure CCAMLR is able to respond to trends in the status of the ...
Meeting Document : WG-EMM-15/36 : Autor(es): A. Constable and S. Candy (Australia)
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Coastal weather drives foraging behaviour of chinstrap penguins, Pygoscelis antarctica
supports them. In the southwest Atlantic sector of the Southern Ocean, Antarctic krill (Euphausia superba ... coastal downwelling and changes in the at-sea habitat usage of chinstrap penguins (Pygoscelis antarctica ... indicators because their performance is presumed to be linked to the overall function of the ecosystem that ... the ecosystem in an adaptive framework for sustainably managing krill catch levels, performance ...
Meeting Document : WG-EMM-18/P14 : Autor(es): A.D. Lowther, P. Trathan, A. Tarroux, C. Lydersen and K.M. Kovacs
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A simulation study of krill fishing by an individual Japanese trawler (SC-CAMLR-VI/BG/37)
candidate abundance indices (generally of a CPUE form) for krill biomass in the 600 n.mile square oceanic ... sector modelled are considered, and their performance in response to a variety of ways in which the ... . research vessel surveys) need to be considered to monitor changes in the number, distribution and size of ... Abstract: A model is set up for the operation (which includes both searching and fishing) of a ...
Meeting Document : WS-KCPUE-89/04 : Autor(es): D.S. Butterworth (South Africa)
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A simulation study of krill fishing by an individual JAPANESE trawler
candidate abundance indices (generally of a CPUE form) for krill biomass in the 600 n.mile square oceanic ... sector modelled are considered, and their performance in response to a variety of ways in which the ... . research vessel surveys) need to be considered to monitor changes in the number, distribution and size of ... Abstract: A model is set up for the operation (which includes both searching and fishing) of a ...
Meeting Document : SC-CAMLR-VII/BG/37 : Autor(es): D.S. Butterworth (Invited Expert)
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A simulation study of krill fishing by an individual Japanese trawler
. A major inconsistency is found: haul times are a factor of 4-5 times greater in reality than in the ... abundance indices (generally of a CPUE form) for krill biomass in the 600 n mile square oceanic sector ... modelled are considered, and their performance in response to a variety of ways in which the overall krill ... to be considered to monitor changes in the number, distribution and size of krill concentrations ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 1–108 : Autor(es): Butterworth, D.S.
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Measurement of ocean temperatures using instruments carried by Antarctic fur seals
South Georgia. In particular, the relationship between on- and off-shelf waters showed larger amounts of ... Abstract: The study aimed to test the utility of instruments deployed on marine mammals for ... measuring physical oceanographic variation and, using this method, to examine temperature variation in the ... recorders (TDRs) fitted to lactating Antarctic fur seals foraging from the coast of South Georgia ...
Meeting Document : WG-EMM-01/56 : Autor(es): I.L. Boyd, E.J. Hawker, M.A. Brandon and I.J. Staniland (United Kingdom)