Résultats de la recherche
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An initial examination of using CPUE as a fishery performance index for the krill fishery
Abstract: Early analyses of CPUE in the krill fishery concluded that it was not a useful index of ... difference between this overall mean and the mean for each year in which the vessel fished. An overall ... fishery performance index (FPI) was derived from the sum of the vessel-specific indices for each year. The ... annual FPI for each of the three subareas showed no synchronous relationship with each other and showed ...
Meeting Document : WG-EMM-16/10 : Auteur(s): CCAMLR Secretariat
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DEVELOPMENT OF A METHODOLOGY FOR DATA QUALITY ASSESSMENT
biological sampling data from a fishing trip. In particular these measures aim to quantify the prevalence of ... assist in assessing which data from a trip should be used in an assessment, and can also guide how these ...
Meeting Document : WG-SAM-08/13 : Auteur(s): D.A.J. Middleton and A. Dunn (New Zealand)
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Factors affecting the growth rate and mass at weaning of Antarctic fur seal pups at Bird Island, South Georgia
between 1972 and 1991 and appeared to decline from 1984 through 1990. Methods used to collect and weigh ...
Meeting Document : WG-CEMP-93/09 : Auteur(s): N.J. Lunn, I.L. Boyd, T. Barton and J.P. Croxall (United Kingdom)
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The error of the biomass estimate as a function of survey parameters and the statistics of a density field of krill aggregations
with the help of mathematical statistics and methods of calculus of probabilities. The biomass estimate ... of the survey with respect to the axis of the correlation ellipse and the frequency of transects ... concentration density field and on parameters of the survey itself, have been derived with the help of ... variation serve as field characteristics on which the error depends. The direction of the survey with ... ecological meaning, it is necessary to supply them with ,confidence intervals indicating the limits of ... possible errors with desired probability. Thus, it is important to find out on whioh parameters of survey ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 213-228 : Auteur(s): Kizner, Z.I.
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AN ASSESSMENT OF ARTIFICIAL BAIT (NORBAIT™) AS A MEANS OF REDUCING THE INCIDENTAL CATCH OF MACROURUS AND OTHER BYCATCH SPECIES IN HIGH LATITUDE TOOTHFISH FISHERIES
Subareas 48.3 and 48.4) during early 2008. During the period 12 April and 14 May 2008 seventeen trial lines ... line with control mags baited with squid, the vessel’s preferred bait for toothfish and alternating ... Aotea II in the Ross Sea in early 2007. This was not the case in Subarea 48.3, the other area where ...
Meeting Document : WG-FSA-08/52 : Auteur(s): J.M. Fenaughty (New Zealand)
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e-sc-ix-a4.pdf
... Subarea 48.3, as detailed in paragraph 3 above. In dealing with the question of approaches to management ... information on krill abundance and distribution, to liaise with the CCAMLR Ecosystem Monitoring Program with ... necessary on krill catches in the subarea which would maintain ecological relationships with dependent and ... other subareas. AVAILABLE INFORMATION 12. In order to identify specific needs with respect to the
application/pdf attached to:WG-KRILL-90Meeting Report : WG-KRILL-90
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Results of the tagging experiment for (D. eleginoides) in Subarea 48.4, 2007 update
in catching and tagging the anticipated number of toothfish each year, the experiment and CM 41-03 ... . eleginoides. These were recaptured 84km and 14km from their points of release. 3. The UK proposes to continue ... may need to be extended for a few more years. Author(s): J. Roberts and D.J. Agnew (United Kingdom ...
Meeting Document : WG-FSA-07/32 : Auteur(s): J. Roberts and D.J. Agnew (United Kingdom)
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Variation in standing stock of the mackerel icefish Champsocephalus gunnari at South Georgia
commercial fishing. 2. The greatest effect has been observed in years when krill are known to have been ... scarce on the South Georgia shelf. 3. It is thought that C. gunnari survivorship is closely related to ...
Meeting Document : WG-FSA-99/63 : Auteur(s): I. Everson, G. Parkes (United Kingdom), K.-H. Kock (Germany) and I. Boyd (United Kingdom)
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Circumpolar connections between Antarctic krill (Euphausia superba Dana) populations: Investigating the roles of ocean and sea ice transport
in the Southern Ocean. Krill have a close association with sea ice which provides access to a ... critical food source and shelter, particularly in the early life stages. Advective modelling of transport ... . Here we present Lagrangian modelling studies at the circumpolar scale that include interaction with sea ... Modelling (OCCAM) project model together with satellite-derived sea ice motion vectors to examine the ...
Meeting Document : WG-EMM-07/P10 : Auteur(s): S.E. Thorpe, E.J. Murphy and J.L. Watkins (United Kingdom)
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Community Structure of copepods in epipelagic layers in the Ross Sea and neighboring waters
from three layers between the surface and 200 m with RMT 8m2 along the three longitudinal lines in the ... ; south of 72°S, 170°W; south of 75°S) were characterized with low abundances (2.6-5.2; mean 3.6 inds ... -2279.5; mean 610.5 inds. 1000 m-3) and dominance of Rhincalanus gigas (mean 88.4%). Group 2 located off ... -1542.1; mean 301.9 inds. 1000 m-3) and high composition of Calanus plopinquus (mean 19.0%), Rhincalanus ...
Meeting Document : WG-EMM-08/36 : Auteur(s): Y. Watanabe, S. Sawamoto, T. Ishimaru and M. Naganobu (Japan)