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Sources of variability associated with Adélie penguin CEMP parameters measured at Béchervaise Island, East Antarctica
be confounded. Temporal variability, that is the between-season variability, was consistent across ... Abstract: We examine the magnitude of a variety of sources of variability associated with CEMP ... be considered as either sampling variance or process related variance, although sometimes the two can ... parameters at around 5-7% CV. The smallest source of variability was associated with measurement error ...
Meeting Document : WG-EMM-03/48 : Автор(ы): L.M. Emmerson, C. Southwell, J. Clarke and K. Kerry (Australia)
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Supplement to the krill synoptic survey design in Area 48 (with participation of a Russian scientific research vessel)
integral part of Area 48 is discussed. It is shown that in this case there shall be obtained for the first ... ° W. It is emphasized that in this way there shall be obtained the data that are important both to ... Abstract: The necessity of synoptic survey covering the South Sandwich Islands that are an ... distribution over the whole water area of Subareas 48.1-48.4 covering a vast zone of krill drift and that of ...
Meeting Document : WG-EMM-99/43 : Автор(ы): V.A. Sushin, S.M. Kasatkina and F.F. Litvinov (Russia)
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Fishing equipment, marine debris and hydrocarbon soiling associated with seabirds at Bird Island, South Georgia, 2005/06
exception of black browed albatross. Entanglements continue to be observed at a rate similar to that of ... associated with seabirds at Bird Island, South Georgia from 1 April 2005 to 31 March 2006. It is the ... longlining gear) were found in association with wandering albatrosses than with any other species. Although ... , more items were encountered this season than in the previous season for all species monitored with the ...
Meeting Document : SC-CAMLR-XXV/BG/11 : Автор(ы): Delegation of the United Kingdom
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THE ANTARCTIC KRILL AND ECOSYSTEM SURVEY WITH R/V “G. O. SARS” IN 2008
Studies) carried out with R/V G. O. Sars, 4.01-27.03.08, including some selected results. The main ... . Ellertsen, E. Grønningsæter, K. Jørstad, E. Karslbakk, T. Klevjer, T. Knutsen, R. Korneliussen, H. Kowall, B ... WITH R/V “G. O. SARS” IN 2008 Approval: Approved ...
Meeting Document : WG-EMM-08/28 : Автор(ы): S.A. Iversen (Norway), W. Melle, E. Bagøien, D. Chu, B. Edvardsen, B. Ellertsen, E. Grønningsæter, K. Jørstad, E. Karslbakk, T. Klevjer, T. Knutsen, R. Korneliussen, H. Kowall, B. Krafft, S. Kaartvedt, P.B. Lona, S. Murray, L. Naustvoll, L. Nøttestad, M. Ostrowski, V. Siegel, Ø. Skagseth, G. Skaret, H. Søiland, X. Zhao and C.B. Årnes
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A comparison of gear selectivity among three fishing gears for Antarctic krill with notes on the demographic patterns and productivity of Antarctic krill during summer 2014
Distribution Functions (EDFs) for the three gears varied over about 7mm, with the BONGO net catching the ... size was shifted to larger animals. These differences suggest that tradeoffs between gear size and ... number of tows should be considered when designing fishery based sampling to augment research surveys ... using fishing vessels if research gear cannot be accommodated. The patterns of krill length frequency ...
Meeting Document : WG-EMM-14/37 : Автор(ы): C. Reiss (USA) and M. Espino Sanchez (Peru)
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Abundance and richness of key Antarctic seafloor fauna correlates with modelled food availability
Abstract: Most seafloor communities at depths below the photosynthesis zone rely on food that ... Antarctica where ecological data are sparse. Here we show that the strength of pelagic–benthic coupling along ... chlorophyll-a, a regional ocean model and diatom abundances from sediment grabs with particle tracking and ... show that fluctuating seabed currents are crucial in the redistribution of surface productivity at the ...
Meeting Document : WS-SM-18/P01 : Автор(ы): J. Jansen, N.A. Hill, P.K. Dunstan, J. McKinlay, M.D. Sumner, A.L. Post, M.P. Eléaume, L.K. Armand, J.P. Warncock, B.K. Galton-Fenzi and C.R. Johnson
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A simulation study of the method of refining the natural mortality coefficient with Champsocephalus gunnari in Subarea 48.3 used as an example
Abstract: The method of refining the natural mortality coefficient is based on the notion that ... mortality as defined by the VPA and fishing effort must be equal to zero if the natural mortality ... shown that the proposed method facilitates such a refinement. When a mistake is made in the choice of ... natural mortality coefficient, the estimate of the free component in the equation will be other than zero ...
Meeting Document : WG-FSA-91/25 : Автор(ы): P.S. Gasiukov and R.S. Dorovskikh (USSR)
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Measurements of fish school velocities with an acoustic Doppler current profiler
results suggests that the ADCP can be a useful tool for observing fish behavior in certain situations ... ), it was required that the four ADCP beams simultaneously insonified a fish school, in the same depth ... scattering layers and possibly vessel avoidance reaction. The method can be enhanced by utilizing the radial ... : Measurements of fish school velocities with an acoustic Doppler current profiler Approval: Approved ...
Meeting Document : WG-EMM-96/41 : Автор(ы): Demer, D.A.
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INTERACTIONS OF PATAGONIAN TOOTHFISH FISHERIES WITH KILLER AND SPERM WHALES IN CROZET EXCLUSIVE ECONOMIC ZONE: AN ASSESSMENT OF DEPREDATION LEVELS AND INSIGHTS ON POSSIBLE MITIGATION SOLUTIONS
data revealed that among the 97 killer whales interacting with the fishery, however 35 individuals ... represents a financial loss of approximately 10 millions €. Killer whales were found to be responsible for ... belonging to four different pods were involved in 81.3% of the interaction events. We also estimated that a ... total of 64 sperm whales interacted with the fishery on the Crozet EEZ in 2008. Significant variations ...
Meeting Document : WG-IMAF-09/12 : Автор(ы): P. Tixier, N. Gasco, G. Duhamel and C. Guinet (France)
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Seabird interactions with trawl and longline fisheries for Dissostichus eleginoides and Champsocephalus gunnari
Paper Title: Seabird interactions with trawl and longline fisheries for Dissostichus eleginoides ... was zero at Macquarie Island and very low at Kerguelen; most was associated with a single vessel using ... a netsonde cable while targetting C. gunnari. Most mortality associated with both longliners and ... trawlers was of white-chinned petrels, with a lesser mortality of albatross species. Mortality rates ... found in the bag of the net could be either collision with t h i netsonde cable or diving into the ... interaction of seabirds with fishing vessels was closely monitored during the 1994/95 season i n bo th t ... Duhamel (1991). This difference could be connected with the more active searching for food by the birds ... ship's wake and be left behind by the ship. The above behaviour meant that birds rarely came closer ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 93–99 : Автор(ы): Williams, R. and D. Capdeville
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