Résultats de la recherche
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Chick provisioning and chick survival to fledging
in three poor breeding seasons compared with six seasons where a higher fledging success was achieved ... , are highlighted. A continuous collection of data on foraging trip duration and meal mass (arrival ...
Meeting Document : WG-EMM-00/40 : Auteur(s): J. Clarke, K. Kerry, L. Irvine and B. Philips (Australia)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region to 2016/17
survey were required to reliably estimate relative year class strengths. Year class strengths were ... estimated from 2003 to 2011 and showed two strong year classes and two weak year classes. Overall, model ... consistent with previous fishing activities and with the Ross Sea region MPA, was either 3234 t or 3258 t ... effective tagging survival and tag detection rates, both of which have decreased in the recent years ...
Meeting Document : WG-FSA-17/37 Rev. 1 : Auteur(s): S. Mormede
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A revised estimate of short-term yield for the mackerel icefish (Champsocephalus gunnari) off Heard Island based on a trawl survey in 1998
population. Unlike the previous 3 years, the Age 2 cohort in 1998 is very weak and is expected to contribute ... in 1999 and 2000. While the abundances of icefish are lower in 1998 than in 1997, the Age 3 and Age 4 ... little to the biomass in subsequent years. If recruitment to Age 2 in 1999 is also weak then the fishery ...
Meeting Document : WG-FSA-98/54 : Auteur(s): A. Constable and D. Williams (Australia)
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Le prix du poisson : Étude de marché mondiale de la légine australe (Dissostichus eleginoides) et antarctique (Dissostichus mawsoni)
trade of toothfish over the six-year analysis period. The average price ($/kg) of imports increased by ... 44% from 2007 to 2012 with an overall decrease in traded volume. The USA accounted for 54% of total ... % from 2007 to 2012 with an overall decrease in traded volume. Initial summary analyses reveal a strong ... relationship between supply and demand within international markets, as well as the influence of country ...
Meeting Document : CCAMLR-XXXIII/BG/14 Rev. 2 : Auteur(s): Secretariat
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Population assessment of Patagonian toothfish in the north of Subarea 48.4 – 2010 update
Abstract: The target tagging rate of 5 fish per tonne was exceeded by both vessels, with 232 D ... is consistent with the theory that the bulk of the biomass is dominated by a small number of cohorts ... . CASAL estimates a large recruitment event in early the early 1990s and faster growth rates than those ... 48.4 are very similar to that from the previous season with a B 0 of 1,123 t (compared to 1,127 t in ...
Meeting Document : WG-FSA-10/39 : Auteur(s): J. Roberts and D. Agnew (UK)
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Development of environmental indices F1, F3 and F4
), automatic weather stations and satellite imagery is explored with reference to the CEMP sites at Edmonson ... Point (Terra Nova Bay, Ross Sea, Subarea 88.1) and Béchervaise Island (Mawson, Eastern Antarctica ...
Meeting Document : WG-EMM-00/27 : Auteur(s): S. Olmastroni and S. Corsolini (Italy), K. Kerry and J. Clarke (Australia) and D. Ramm (CCAMLR Secretariat)
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IDENTIFICATION OF DATA QUALITY METRICS FOR TAGGING DATA SELECTION
to identify those metrics that are most informative with respect to the identification of good ... rates of recapture of tags released by the trip, and above-median tag recapture rates by the trip.A ... bootstrap analysis indicates that the range of data quality metrics associated with known good tagging data ...
Meeting Document : WG-SAM-09/19 : Auteur(s): D.A.J. Middleton and A. Dunn (New Zealand)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2006/07 season
lower recapture rate by non-New Zealand vessels, particularly in the early years. The reason for this is ... data for all vessels in all years were used, then the estimated initial biomass was higher (B0=110 130 ...
Meeting Document : WG-FSA-07/37 : Auteur(s): A. Dunn and S.M. Hanchet (New Zealand)
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Population dynamics of wandering albatrosses Diomedea exulans at sub-Antarctic Marion Island: longline fishing and environmental influences
and changes in the proportion of the population that attempts to breed in a given year. We describe ... anthropogenic effects. The proportion of first-time breeders in the population was positively correlated with ... with Japanese pelagic longline fishing effort in the Southern Indian Ocean. Adult survival rates were ... significantly correlated with those recorded on neighbouring Possesion Island (Crozet Islands) but differed from ...
Meeting Document : WG-FSA-02/16 : Auteur(s): D.C. Nel, P.G. Ryan and J. Cooper (South Africa)
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Progress report on the Korean exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in 2014/15
individuals with 131,992 kg. The research fishing using tags were conducted according to the CCAMLR CM, and ... sampling plankton was lost, and CTD equipment was damaged. It is judged to need measures for supplementing ...
Meeting Document : WG-SAM-15/35 : Auteur(s): Delegation of the Republic of Korea