Resultados de la búsqueda
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A simulation study of the method of deriving natural mortality rate using data for Champsocephalus gunnari in Subarea 48.3
(determined by VPA) and fishing effort is described. The intersect of this regression must be equal to zero if ... been correctly chosen. Data for Champsocephalus gunnari in Subarea 48.3 are used to show that the ... estimate of the intercept of the regression is other than zero. A bias in the intercept will be positive if ... that the scientific justification for using the method of Gasyukov and Dorovskikh (1990) would be ... it will be reasonable to apply the statistical null hypotheses that this factor is equal to zero ... . It should be noted that steps (iv) and (v) can be accomplished by a number of methods. Mean weighted ... algorithm of simple and that of functional regressions can be used (Ricker, 1975). 3. SIMULATION ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 69–83 : Autor(es): Gasyukov, P.S. and R.S. Dorovskikh
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Foraging of royal albatrosses, Diomedea epomophora, from the Otago Peninsula and its relationship to fisheries.
mass, with hot spots of activity that coincided with fishing zones actively exploited by commercial ... Otago Peninsula and their coincidence with fisheries activities were studied with global positioning ... trawl fisheries during the study period. Birds appeared to change their behaviours with proximity to ...
Meeting Document : WG-FSA-05/P4 : Autor(es): Davis, L., Setiawan, A., Higuchi, H., Suzuki, M., Fukuda, A., Filippi, D., Waugh, S.
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Convener’s summary on intersessional activities of the Subgroup for the Implementation of the CCAMLR-2008-IPY-Survey
Abstract: At its last meeting in October 2004 the Scientific Committee agreed that a synoptic ... acoustic survey in the South Atlantic region would be the most appropriate activity for CCAMLR in the IPY ... 2008. It was agreed that a synoptic acoustic/net sampling survey in the South Atlantic region should ...
Meeting Document : SC-CAMLR-XXIV/BG/02 Rev. 1 : Autor(es): V. Siegel (Convener, Steering Group ‘CCAMLR-2008-IPY-Survey’)
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Are penguins and seals in competition for Antarctic krill at South Georgia?
Abstract: The Antarctic fur seal and macaroni penguin are sympatric top predators that occur in ... consumers of Antarctic krill. In recent years the population of fur seals has increased whereas that of ... we test the hypothesis that the expanded fur seal population at South Georgia may have resulted in ... prevalence of krill in the diet of the two predators differed with less krill in the diet of macaroni ...
Meeting Document : WG-EMM-01/22 : Autor(es): K.E. Barlow, I.L. Boyd, J.P. Croxall, I.J. Staniland, K. Reid and A.S. Brierley (United Kingdom)
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Development of a spatially-explicit minimum realistic model for Antarctic toothfish (Dissostichus mawsoni) and its main prey (Macrouridae and Channichthyidae) in the Ross Sea
predation mortality (M2), in addition to fishing mortality (F) on all three species. The model suggests that ... fishing mortality on both prey species and that icefish is expected to show a larger increase in biomass ... through time than grenadiers. It also suggests that a prey-suitability function is more likely than a ... the predicted population changes with available abundance data for each species to develop hypotheses ...
Meeting Document : WG-EMM-14/51 : Autor(es): S. Mormede, M. Pinkerton, A. Dunn, S. Hanchet and S. Parker (New Zealand)
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Evaluation of Antarctic krill biomass and distribution off the South Orkney Islands 2011-2015
estimation as far as practically possible, given that we work with unconventional sets of frequencies for ... . The vessels were equipped with similar Simrad echo sounder systems suitable for quantitative ... coverage, we also define a stratum within the survey area on the north side of the islands with full ... coverage in all years except 2013. The results show that except from the year 2015, krill densities were ...
Meeting Document : WG-EMM-15/54 : Autor(es): G. Skaret, B.A. Krafft, L. Calise (Norway), J. Watkins (UK), R. Pedersen and O.R. Godø (Norway)
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REPORT ON TRANSHIPMENT OF KRILL IN 2009
in the CCAMLR Convention Area in 2009, as a background paper for CCAMLR annual meeting to be held in ... transshipments within the Convention Area”, especially in accordance with the paragraph 6 of the Measure, Japan ... Area in 2009, as a background paper for CCAMLR annual meeting to be held in October 2010. Author(s ...
Meeting Document : CCAMLR-XXIX/BG/05 : Autor(es): Delegation of Japan
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Analysis of krill catch data from continuous and conventional trawls by the Saga Sea and Atlantic Navigator
bycatch of larval fish taken by the Saga Sea fishing with continuous trawls in 2006, and the Atlantic ... caught by both conventional and continuous trawling techniques appear to be very similar. Although there ... to be the same as those from conventional trawls. Author(s): D.J. Agnew, A. Payne, J. Hooper and J ...
Meeting Document : WG-FSA-06/57 : Autor(es): D.J. Agnew, A. Payne, J. Hooper and J. Roe (United Kingdom)
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Plan of research program of the Ukraine in Subarea 48.2 in 2016 (second season)
accordance with the recommendations of CCAMLR-XXXIII. The certain number of the following bottom long line ... surveys are proposed to be conducted during March-April 2016. The research surveys will be conducted by ...
Meeting Document : WG-SAM-15/40 : Autor(es): Delegation of Ukraine
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Ross Sea fishery research and data collection plan
88.2, combined with the greater number of Small Scale Research Units (SSRUs) and the amount of data ... demonstrates that by-catch levels, particularly catches of Whitson’s grenadier (Macrourus whitsoni), are ... demonstrably higher on research hauls. The paper concludes with a proposal for a more effective Research Plan ... for the Ross Sea exploratory toothfish fishery that achieves the requirement to collect biological ...
Meeting Document : WG-FSA-05/49 : Autor(es): J. Fenaughty (New Zealand)