Résultats de la recherche
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Net sample validation of acoustic techniques used to identify and size Antarctic krill
species groups has been attempted using differences in echo strength at two acoustic frequencies (ΔMVBS ... collected with an RMT8. Around 80 % of the targets thought to be krill on the basis of their appearance on ... = 0.77) than a fluid-filled sphere model. Author(s): Watkins, J.L., Brierley, A.S. Title: Net sample ...
Meeting Document : WG-EMM-97/46 : Auteur(s): Watkins, J.L., Brierley, A.S.
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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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WG-CSD-87
of Chile WG-CSD-87/19 Rev. 1 Rational useComments from Submissions of Member States WG-CSD-87/20 ... , Australia Date(s): Tuesday, 27 October 1987 Submissions Due: Wednesday, 7 October 1987 Meeting documents ... Conservation approaches: the implications of Article II United Kingdom WG-CSD-87/14 Consideration of a ...
Meeting
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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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Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass
median unexploited spawning biomass Abstract / Description: Two Monte Carlo simulation models, the krill ... perio . Table 2: Escapement of spawning biomass at the end of 20 and 30-year projections for different ... and for three levels of y - 0.15, 0.2 and 0.4. Projections for 20 years and 30 years were undertaken ... spawning biomass after 20 and 30 years relative to median So in each run with no fishing was 1.099 and ... : The probability of depleting the spawning biomass during 20-year projections for different levels of y ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 1–8 : Auteur(s): Constable, A.J. and W.K. de la Mare
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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.