Résultats de la recherche
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Biological acoustic survey in the marginal ice edge zone of the Bellingshausen Sea
Abstract: An acoustic survey at 38 and 120 kHz was carried out from RRS Discovery in the ... of krill (Euphausia superba) distribution and biomass in the marginal ice edge zone. Krill biomass ... phase. On this first survey a large swarm (2.8 km in extent) had a potential biomass of 3.7 x 104 tonnes ... . Some calculations are presented to show the potential impact of krill on the flux of carbon in the area ...
Meeting Document : WG-Krill-94/32 : Auteur(s): A.W.A. Murray, J.L. Watkins and D.G. Bone (United Kingdom)
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Assessment of green Notothenia (Notothenia gibberifrons, Lonnberg 1905) stocks in the Antarctic Peninsula subarea
based on the results of inventory trawling surveys carried out in 1984/1985 and 1986/1987 by the BMRT ... "Gizhiga" in the Antarctic Peninsula subarea. Also presented are the abundance and biomass ... to the investigation data, the green Notothenia biomass in the Antarctic Peninsula subarea amounts to ... gibberifrons, Lonnberg 1905) stocks in the Antarctic Peninsula subarea Approval: Approved ...
Meeting Document : SC-CAMLR-VII/BG/46 : Auteur(s): V.A. Boronin (USSR)
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Survey estimates of recruitment of toothfish in Subarea 48.3
data used by the Working Group for toothfish assessments in 1999 and later were correct. We found ... , the modal progression of peaks in the length densities corresponding to cohorts assessed by sequential ... consistently determined from the survey data. The expected reduction in cohort density with time at a log-scale ... rate of-0.16 (natural mortality) was evident in only very few cohort plots, even those which were ...
Meeting Document : WG-FSA-SAM-04/16 : Auteur(s): Collins, M., Wakeford, R.C., Moir-Clark, J., Belchier, M., Agnew, D.J.
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Revised estimates of the biological parameters for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea
(Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B). We present revised estimates of the ... observer data collected from commercial fishing operations in the Ross Sea. In addition, we review meta ... ) Title: Revised estimates of the biological parameters for Antarctic toothfish (Dissostichus mawsoni) in ...
Meeting Document : WG-FSA-SAM-06/08 : Auteur(s): A. Dunn, P.L. Horn and S.M. Hanchet (New Zealand)
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Robust characterisation of the age structure, growth and recruitment of toothfish in the Macquarie Island and Heard Island and McDonald Islands fisheries
, collected during the 2000-2011 fishing seasons in Division 58.5.2 and outside the CCAMLR area at Macquarie ... , as well as allowing more precise estimates of the selectivity of the different fishing gears used in ... the stock assessment in Division 58.5.2 compared to a scenario using only catch at length data. The ... in developing an ageing program. Author(s): D.C. Welsford, S.G. Candy, J.J. Verdouw and J.J ...
Meeting Document : WG-FSA-12/P07 : Auteur(s): D.C. Welsford, S.G. Candy, J.J. Verdouw and J.J. Hutchins
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A revised assessment of Patagonian toothfish in Subarea 48.4
Abstract: The stocks of toothfish in Subarea 48.4 are currently divided, for assessment purposes ... species are caught throughout Subarea 48.4 although D. eleginoides are predominantly caught in the north ... , whilst D. mawsoni are mainly caught in the south. WG-FSA 2012 concluded that species specific assessments ... . eleginoides in Subarea 48.4. The main changes to the assessment are: the removal of D. mawsoni data and the ...
Meeting Document : WG-SAM-13/24 : Auteur(s): R. Scott (United Kingdom)
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Report of vulnerable marine ecosystems in South Georgia Islands (CCAMLR Subarea 48.3) through research dredge sampling
Abstract: In this contribution we report the presence of 6 vulnerable marine ecosystems (VME ... inclusion in the CCAMLR VME registry, were detected during a research cruise performed by the National ... here with previous reports in the same area. Thus, owing to high diversity and abundance of indicators ... by fishing activity in the area of the CCAMLR convention. Author(s): E. Gaitán, L. Schejter, D ...
Meeting Document : WG-FSA-13/58 : Auteur(s): E. Gaitán, L. Schejter, D. Giberto, M. Escolar and C. Bremec (Argentina)
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Preliminary assessment of Patagonian toothfish in Subarea 48.4
Abstract: To date, the stocks of toothfish in Subarea 48.4 have been divided, for assessment ... in the north, whilst D. mawsoni are mainly caught in the south. CCAMLR WG-FSA 2012 concluded that ... revised assessment of D. eleginoides in Subarea 48.4. The main changes to the assessment are: the removal ... Patagonian toothfish in Subarea 48.4 Approval: Approved ...
Meeting Document : WG-FSA-13/31 : Auteur(s): R. Scott and V. Laptikohvsky (United Kingdom)
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Configuration of the FP-120 net used on UK groundfish surveys in CCAMLR Subarea 48.3 (South Georgia)
Abstract: At its 2014 meeting, WG-FSA recommended that details of fishing gear used in trawl ... surveys (in addition to longline research) should be submitted to the CCAMLR fishing gear ‘library’ (SC ... sampling demersal fishes on the UK groundfish survey in CCAMLR subarea 48.3 since 1991. Author(s): M ... groundfish surveys in CCAMLR Subarea 48.3 (South Georgia) Microsoft Word File: fsa-15-26.docx Approval ...
Meeting Document : WG-FSA-15/26 : Auteur(s): M. Belchier, L. Featherstone and J. Oliver (United Kingdom)
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Proposed amendments to Conservation Measure 51-06 (2014) General measure for scientific observation in fisheries for Euphausia superba
Abstract: Due to uncertainties in Antarctic krill stock, which do not allow scientists to develop ... changes to CCAMLR Conservation Measure 51-06(2014) be considered in order to make the scientific ... observation system in the krill fishery mandatory. Author(s): Delegation of Ukraine Title: Proposed ... amendments to Conservation Measure 51-06 (2014) General measure for scientific observation in fisheries for ...
Meeting Document : CCAMLR-XXXIV/BG/34 : Auteur(s): Delegation of Ukraine