Résultats de la recherche
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Domain 1 Marine Protected Area Preliminary Proposal – PART A: MPA Model
Abstract: This draft is aimed to describe the process for the designation of an MPA in Domain 1 ... led by Argentina and Chile. The process has resulted in the compilation, analysis, integration and ... approach in all stages of the decision making process towards identifying Priority Areas for Conservation ... (PAC) in Domain 1. A technical description of the software and analyses used for the identification of ...
Meeting Document : WG-EMM-17/23 : Auteur(s): Delegations of Argentina and Chile
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Spatial distribution and swarm characteristics of Antarctic krill around the South Shetland Islands
using the swarm-based method established in SG-ASAM-17. Acoustic data were collected from the FV Fu Rong ... Hai using Simrad EK60 echosounder (38/70/120 kHz) during four transect surveys conducted in December ... as swarms in a patchy fashion and the mean krill densities in December 2013 and February 2018 were ... markedly higher than the other two years. Meanwhile, much more swarms (1055) were detected in February 2018 ...
Meeting Document : WG-EMM-18/42 : Auteur(s): X. Yu, X. Wang and X. Zhao
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Homogeneity of body length composition of Antarctic krill within the commercial haul
Abstract: The homogeneity of krill length composition in commercial trawl catches (hauls) was ... difference (P>0.05) in 53 out of 60 hauls. Therefore it is concluded that sampling from one part of the ... haul provides a reasonable estimate of length composition in the entire haul as a whole. In contrast to ... small variations in length composition within the same haul, variation between different hauls was most ...
Meeting Document : WG-KRILL-90/11 Rev1 : Auteur(s): T. Ichii (Japan)
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Stable isotope analysis of Southern Ocean fish tissue samples to investigate trophic linkages of Antarctic toothfish (Dissostichus mawsoni)
fishing vessels during the 2005/06 season in the Ross Sea CCAMLR Subarea 88.1 in order to investigate ... occupying the highest level. Some Antarctic toothfish sampled in this study occupied a similar trophic level ... according to their?15N signatures to killer whales and Weddell seals in McMurdo Sound, bluefin tuna in the ... Atlantic, and sperm whales from the Gulf of Mexico. There was high variance in?15N and?13C values for each ...
Meeting Document : WG-EMM-07/19 : Auteur(s): M.H. Pinkerton, S. Bury, S.M. Hanchet and D. Thompson (New Zealand)
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Estimating fishing gear selectivity for Patagonian toothfish (Dissostichus eleginoides) caught by trawlers on the Heard Island plateau region (Division 58.5.2) using trawl and longline length frequency data and forward-calculated continuation ratios
selectivity and a plateau section in between for the length range where fish are assumed fully selected. Using ... . In the first stage I estimate a parameter for each 40 mm wide length bin from the fit of a binomial ... generalised linear mixed model (GLMM) to the number of fish in the bin using a logit link function and ... binomial sample size defined as the number of fish in that bin or greater. I combine the data for length ...
Meeting Document : WG-FSA-05/65 : Auteur(s): S.G. Candy (Australia)
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Population dynamics of black-browed and grey-headed albatrosses Diomedea melanophrys and D. chrysostoma at Campbell Island, New Zealand, 1942–96
-browed Albatross numbers went into a steep decline in the 1970s and, since at least 1984, have been ... in numbers of the Grey-headed Albatross has continued into the 1990s, averaging annually between 3.0 ... are accidentally killed in the Japanese long-line fishery for tuna Thunnus sp. In the Australasian ... region. The steep decline of Black-browed Albatross numbers in the 1970s was concomitant with the ...
Meeting Document : WG-FSA-04/58 : Auteur(s): S.M. Waugh (New Zealand), H. Weimerskirch (France), P.J. Moore and P.M. Sagar (New Zealand)
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NET-BASED VERIFICATION OF ACOUSTIC TECHNIQUES USED TO IDENTIFY ANTARCTIC KRILL
that were collected during two cruises to the South Georgia region in 1996. For each krill aggregation ... model derived target id window only identified krill in 6 of the 16 nets correctly. The ‘2 freq 2-16 ... ’ algorithm attributed more than 90 % of the total backscatter to krill in all but 1 aggregation with the ‘2 ... krill in 12 out of the 16 nets. The ‘2 freq 2 – 12’ window only attributed more than 90 % of the total ...
Meeting Document : WG-EMM-08/54 : Auteur(s): J. Watkins and S. Fielding (United Kingdom)
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SUMMARY OF SCIENTIFIC OBSERVATIONS RELATED TO CONSERVATION MEASURES 24-02 (2008), 25-02 (2009), 25-03 (2009) AND 26-01 (2009)
seabird conservation”, 25-02 (2009) “Minimisation of the Incidental Mortality of Seabirds in the Course of ... Longline Fishing or Longline Fishing Research in the Convention Area”, 25-03 (2009) “Minimisation of the ... Incidental Mortality of Seabirds and Marine Mammals in the Course of Trawling in the Convention Area”, 26-01 ... limitations on Euphausia superba in Statistical Subareas 48.1, 48.2, 48.3 and 48.4”. Waste Disposal 2. The ...
Meeting Document : WG-FSA-10/08 : Auteur(s): Secretariat
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Unusual breeding by seabirds at Marion Island during 1997/98
Abstract: In 1997/98, breeding at subantarctic Marion Island was exceptionally good for five ... Aptenodytes patagonicus chicks surviving to the start of spring in 1997 was considerably more than previously ... recorded, and more southern giant petrels M. giganteus did so than in any other year since 1994. For ... southern giant petrels, reproductive success was higher than in any other year, as was survival of chicks ...
Meeting Document : WG-EMM-03/13 : Auteur(s): R.J.M. Crawford, C.M. Duncombe Rae, D.C. Nel and J. Cooper (South Africa)
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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
and the South Shetland Islands in January – February 2002 in close collaboration with the U.S ... results obtained in 1998 and 2001 for most species. Length compositions in the most abundant species ... resembled closely those in previous years. The proportion of juvenile G. gibberifrons, the most abundant ... species in the region, decreased significantly since 1998. No indication was found for the presence of a ...
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)