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Acoustic survey design to estimate krill biomass in Subareas 48.1, 48.2 and 48.3
Abstract: The Scientific Committee has requested advice on the feasibility of conducting a ... synoptic survey of krill biomass in Statistical Area 48. Example calculations are presented for estimating ... 1.25 ship-months of survey effort can provide an estimate of krill biomass in Subareas 48.1, 48. 2 and ... 48.3 with a CV of 20%. Author(s): Hewitt, R.P., Watters, G. Title: Acoustic survey design to estimate ...
Meeting Document : WG-EMM-95/71 : Автор(ы): Hewitt, R.P., Watters, G.
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Analysis of the diet of Champsocephalus gunnari in Subarea 48.3, Dr E. Holmberg survey, February 1995
empty stomachs (also at Shag Rocks), close to the values reported for years of krill scarcity. While no ... krill availability indicated by frequency of occurrence, but, on the other hand, high proportions of ... , an acoustic survey carried out in the same area in March 1995 detected such aggregations. It is ... suggested that krill availability for C. gunnari around South Georgia in the 1995 summer season, was ...
Meeting Document : WG-FSA-95/36 : Автор(ы): Marschoff, E., Barrera-Oro, E., Casaux, R.
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The effects of global climate variability in pup production of Antarctic fur seals
reductions in Antarctic fur seal pup production over 20 years of study. Simulated environmental time series ... Antarctic fur seal pup production at South Georgia over a 20-year period in response to environmental ... Abstract: Climate variability has strong effects on marine ecosystems, with repercussions that ... suggested that the effect of anomalies on Antarctic fur seals was only detectable within a narrow range of ...
Meeting Document : WG-EMM-06/P2 : Автор(ы): J. Forcada, P.N. Trathan, K. Reid and E.J. Murphy (United Kingdom)
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A CHARACTERISATION OF THE TOOTHFISH FISHERY IN SUBAREAS 88.1 AND 88.2 FROM 1997/98 TO 2008/09
Abstract: The exploratory fishery for Dissostichus spp. has now been operating for 13 years in ... Subarea 88.1 and for 8 years in Subarea 88.2. During that time a large amount of distributional and ... biological data has been collected on toothfish and the associated bycatch. The purpose of this report is to ... steadily increased over the first seven years of the fishery but has since stabilised at about 1000–1200 m ...
Meeting Document : WG-FSA-09/36 : Автор(ы): S.M. Hanchet, A. Dunn and S. Mormede (New Zealand)
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Defining predator foraging ranges, illustrated using Adélie penguin foraging tracks from Mawson coast
addressed in answering that question. The proposed method for defining foraging ranges is based on an ... effort and this is used to delineate a feeding ground for Adélie penguins on the Mawson coast in eastern ... Antarctica. This method builds on existing methods but incorporates tools for pooling information across ... approach used to define fishing grounds. The data which is considered as an example here consists of ...
Meeting Document : WG-EMM-02/41 : Автор(ы): I.R. Ball, A.J. Constable, J. Clarke and L. Emmerson (Australia)
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Krill catch distribution in relation to predator colonies 1987 to 1992
is similar to that seen for other years, with 70% of the total catch from Subarea 48.1 being taken ... , calculated from CCAMLR fine-scale data, is shown for Subareas 48.1 and 48.2. The pattern of catches in 1992 ... -distance’). Although data reporting was not complete for Subarea 48.2 in 1992, it was estimated that 38% of ... previous years. It is estimated that the catch in the critical period-distance was equal to 12% and 15% of ...
Meeting Document : WG-KRILL-93/10 : Автор(ы): Secretariat
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ECOLOGICAL REPERCUSSIONS OF HISTORICAL FISH EXTRACTION FROM THE SOUTHERN OCEAN
stocks were on average reduced to <50%, and finally (mid-1980s) to <20%, of original size. Despite ... oscillated between two states, but has remained in its “positive mode” since the time of the fish extraction ... extensively on these fish, and monitored at Marion, Crozet, Kerguelen, Heard, South Georgia, South Orkney and ... South Shetland islands, where fishing was concentrated — declined simultaneously during the two periods ...
Meeting Document : WG-EMM-08/P07 : Автор(ы): D. Ainley and L. Blight
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Предложение о создании Программы работы АНТКОМ по реагированию на изменение климата
reference for an ICG to support its implementation are recommended for adoption. Author(s): Delegations of ... Australia and Norway on behalf the Climate Change Intersessional Correspondence Group Title: Proposal for a ... Climate Change Response Work Program for CCAMLR Microsoft Word File: e-cc-xxxvi-20.docx Approval ... Terms of Reference of the Intersessional Correspondence Group (ICG) to develop approaches for ...
Meeting Document : CCAMLR-XXXVI/20 : Автор(ы): Delegations of Australia and Norway on behalf the Climate Change Intersessional Correspondence Group
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The spawning dynamics of Patagonian toothfish in the Australian EEZ at Heard Island and the McDonald Islands and their importance to spawning activity across the Kerguelen Plateau
‘mature’, offset by two years to account for the duration of the maturation process, provided more ... available for 12 563 individuals. The histology of male and female gonads was also analysed from specimens ... realistic estimates. The revised ogives were shown to have a significant impact on the estimates of stock ... animals, and that even large mature fish may not spawn every year. As a result, the conventional method of ...
Meeting Document : WG-FSA-12/P08 : Автор(ы): D.C. Welsford, J. McIvor, S.G. Candy and G.B. Nowara
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Skate tagging in the Heard Island and McDonald Island (Division 58.5.2) toothfish fishery up to 2013
liberty of nearly eight years for one B. irrasa. Range of movement in depth was between-266 m and 280 m ... . Growth increments for tagged and recaptured B. eatonii indicated growth of ~20mm/year for both sexes ... biology of these species. In the 13 years, over 12,000 skates have been tagged, with 112 recaptures, a ... recapture rate of less than one percent. The average distance between release and recapture for each of the ...
Meeting Document : WG-FSA-13/22 : Автор(ы): G.B. Nowara, T.D. Lamb and D.C. Welsford (Australia)
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