Résultats de la recherche
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Krill (Euphausia superba) distribution contracts southward during rapid regional warming
Euphausia superba (hereafter, ‘krill’) has contracted southward over the past 90 years. Near their northern ... management of valuable polar ecosystems. Author(s): A. Atkinson, S.L. Hill, E.A. Pakhomov, V. Siegel, C.S ...
Meeting Document : WG-EMM-2019/P02 : Auteur(s): A. Atkinson, S.L. Hill, E.A. Pakhomov, V. Siegel, C.S. Reiss, V.J. Loeb, D.K. Steinberg, K. Schmidt, G.A. Tarling, L. Gerrish and S.F. Sailley
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Assessment of the Patagonian Toothfish (D. eleginoides) in Subarea 48.3
35 years with 50% probability, with less than 1% probability declining below 20% of B0 and would ... . The 2008 year class is estimated to be well above average. Provisional projections indicate that a ... the current status of the stock is at 52% of B0. Spawning biomass has been increasing in recent years ... therefore be consistent with the CCAMLR decision rule. Author(s): T. Earl, M. Soeffker and C. Darby (United ...
Meeting Document : WG-FSA-15/59 : Auteur(s): T. Earl, M. Soeffker and C. Darby (United Kingdom)
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Proposal to continue the time series of research surveys to monitor abundance of Antarctic toothfish in the southern Ross Sea, 2016–2017
the next two years, 2016–2017, is presented. The survey will continue to focus primarily on estimating ... basis, it is proposed that these two areas be surveyed in alternate years. Therefore, it is proposed to ... the same as in previous years, and the number of sets will be retained at 45 sets for the core strata ... completed and presented to WG-SAM and WG-FSA in 2017. Author(s): S.M. Hanchet, S.J. Parker, S. Mormede ...
Meeting Document : WG-SAM-15/45 : Auteur(s): S.M. Hanchet, S.J. Parker, S. Mormede and R.J.C. Currey (New Zealand)
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Assessment models for Patagonian toothfish in research block 5843a_1 of Division 58.4.3a, Elan Bank
between the two models were set as follows: year class strength (YCS) was fixed; parameters of ALK were ... years 2004/05 to 2012/13 following the recommendation during the last WG-SAM meeting. The two models are ... Abstract: I made two sensitive runs of CASAL catch at length models (LENGTH_MODEL) for stock ... comprised of two fisheries split by depths of 1 200 m as the model in WG-SAM-14/17. Number of longlines was ...
Meeting Document : WG-FSA-14/22 : Auteur(s): K. Taki (Japan)
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Standing stock estimates of finfish biomass from the 2002 Polarstern bottom trawl survey around Elephant Island and the South Shetland Islands (Subarea 48.1) with some notes on the composition of catches taken north of Joinville Island – D’Urville Island
quantities prior to commercial exploitation in 1979/80. It should be noted that more than 95 % of the ... resembled closely those in previous years. The proportion of juvenile G. gibberifrons, the most abundant ... stock. Author(s): K.-H. Kock (Germany), C.D. Jones (USA), J. Appel (Germany), G. von Bertouch (CCAMLR ... (Italy), S. Schöling (Germany) and L. Zane (Italy) Title: Standing stock estimates of finfish biomass ...
Meeting Document : WG-FSA-02/24 : Auteur(s): K.-H. Kock (Germany), C.D. Jones (USA), J. Appel (Germany), G. von Bertouch (CCAMLR Secretariat), D.F. Doolittle (USA), M. la Mesa (Italy), L. Psenichnov (Ukraine), R. Riehl (Germany), T. Romeo (Italy), S. Schöling (Germany) and L. Zane (Italy)
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REVISION OF CCAMLR’S SYSTEM OF INSPECTION
revisions in 20 years. A major overhaul is proposed to modernize the boarding and inspection scheme in the ... and innovative conservation measures CCAMLR has introduced in recent years to combat illegal ... other CCAMLR Members to support and adopt this proposal. Author(s): Delegation of the USA Title ...
Meeting Document : CCAMLR-XXVIII/40 Rev. 1 : Auteur(s): Delegation of the USA
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Interannual variation in the diet of the Antarctic prion Pachyptila desolata at South Georgia
copepods, especially Rhincalanus gigas and Calanoides acutus, in two years of low krill abundance ... suffer much reduced reproductive performance in years of reduced krill availability. Author(s): Croxall ... regurgitated by adult birds during five breeding seasons at Bird Island, South Georgia. In all years the diet ... . Antarctic krill Euphausia superba was the dominant prey item in three years and was replaced by calanoid ...
Meeting Document : WG-EMM-97/12 : Auteur(s): Croxall, J.P., Edwards, T.M., Reid, K.
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Population structure of icefish (Champsocephalus gunnari) in the South Georgia area (Antarctic)
assume the common origin of the western and Shag Rock groupings. C.gunnari of two-three years old (at the ... similarity between the eastern and western groupings and the differences between those two and Shag Rocks ... South Georgia and at Shag Rocks are different. The length-age structure of C.gunnari groupings ... length and older than 6-7 years (10-11 years in the South Georgia area) and considerably lower number of ...
Meeting Document : WG-FSA-04/40 : Auteur(s): Zh.A. Frolkina and I.A. Trunov (Russia)
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Characterisation of skate catches in the Ross Sea region
in the Ross Sea Region, including the data collected in the two “Year of the Skate” fishing seasons ... of the two species, starry skates generally being found deeper and more to the west than Eaton cf ... the “Years of the Skate”, a total of about 3300 starry skates and 700 Eaton cf. skates were tagged and ... T-bar tags were similar to those calculated for toothfish. The “Years of the Skate” have been ...
Meeting Document : WG-FSA-10/25 : Auteur(s): S. Mormede and A. Dunn (New Zealand)
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Depletion-corrected average catch: a simple formula for estimating sustainable yields in data-poor situations
yield component and an unsustainable “windfall” component associated with a one-time reduction in stock ... biomass. The size of the windfall is expressed as being equivalent to a number of years of sustainable ... sum of the number of years in the catch series and this windfall ratio. Input information includes the ... sum of catches and associated number of years, the relative reduction in biomass during that period ...
Meeting Document : WG-SAM-11/P3 : Auteur(s): A.D. McCall