Résultats de la recherche
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Fish in the diet of the blue-eyed shag Phalacrocorax atriceps at the South Shetland Islands: six years of monitoring studies
Abstract: In this document we inform on the results of six years monitoring changes in the diet ... gibberifrons and Notothenia rossii, species of particular interest for CCAMLR. Notothenia rossii appeared in ... the diet of this bird in the lasts years and the importance of G. gibberifrons fluctuated without ... . Author(s): Barrera-Oro, E., Casaux, R. Title: Fish in the diet of the blue-eyed shag Phalacrocorax ...
Meeting Document : WG-EMM-96/31 : Auteur(s): Barrera-Oro, E., Casaux, R.
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Revision of icefish (C. gunnari) stock estimate in the South Georgia area on the basis of the Russian trawl-acoustic survey 2002
Abstract: Revision of icefish (С.gunnari) stock estimate in South Georgia Area was caused by ... for target strength estimates using in situ measurement data; the combination of trawl and acoustic ... icefish target strength estimated obtained from in situ measurement data by bootstrap-method and biomass ... estimates and its statistical characteristics. Major sources of uncertainties in icefish stock estimates and ...
Meeting Document : WG-FSA-SAM-04/10 : Auteur(s): Gasyukov, P.S., Kasatkina, S.M.
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Considerations for research plan design and implementation in data-poor fisheries
of research plans in data poor fisheries submitted under CMs 21-02 and 24-01 in 2011 and in 2012. We ... biological risks arising from uncertainty in the research implementation process. Author(s): S.J. Parker, B ... implementation in data-poor fisheries Approval: Approved ...
Meeting Document : WG-SAM-13/37 : Auteur(s): S.J. Parker, B. Sharp, A. Dunn (New Zealand) and K. Taki (Japan)
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Assessment of Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.4
. eleginoides) in Subarea 48.4. The assessment data are updated with the observations for the 2017/18 season and ... the data weighting method revised to be consistent with those applied in other CCAMLR assessment model ... fits. Stock projections indicate that the stock was at 67% of B 0 in 2018/19 and that a yield of 27 ... tonnes in 2019/20 and 2020/21 is consistent with the application of the CCAMLR harvest control rule ...
Meeting Document : WG-FSA-2019/29 : Auteur(s): T. Earl and E. MacLeod
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2006/07 season
model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B ... model resulted in a slightly lower estimate of initial biomass than the 2006 base case. The inclusion of ... data resulted in a more optimistic assessment. The more optimistic estimate was probably due to the ... lower recapture rate by non-New Zealand vessels, particularly in the early years. The reason for this is ...
Meeting Document : WG-FSA-07/37 : Auteur(s): A. Dunn and S.M. Hanchet (New Zealand)
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An illustrative management procedure for exploring dynamic feedback in krill catch limit allocations among small-scale management units
Abstract: A Management Procedure (MP) approach is proposed to assist in advising regarding the ... subdivision of the precautionary catch limit for krill among 15 small-scale management units (SSMUs) in the ... -species Operating Model (SMOM) developed in Plaganyi and Butterworth (2006) is used as an operating model ... the static allocation options, to ensure that the likely performances of these MPs in terms of low ...
Meeting Document : WG-EMM-06/28 : Auteur(s): É. Plagányi and D. Butterworth (South Africa)
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Estimating fishing gear selectivity for trawlers using length-frequency data from concurrent commercial trawl and longline fishing for Patagonian toothfish in Division 58.5.2 and the ratio of their hazard functions
quadratic function in length. This function was calibrated using random length frequency (LF) data collected ... fish falling in a particular length bin, analagous to a death in a given time interval in survival ... (GLMM). The GLMM was fitted to the number of fish in a bin using a complementary log-log link function ... and binomial sample size defined as the number of fish in that bin or a larger length bin. The ...
Meeting Document : WG-FSA-06/35 : Auteur(s): S.G. Candy (Australia)
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Downward adjustments to local catch limits for the krill fishery in Subarea 48.1
adjustments to local catch limits for the krill fishery in Subarea 48.1. We use the term local catch limit to ... the gSSMUs defined in another compilation of vignettes (AERD 2016a, pp. 3-13). We propose downward ... krill fishery in Subarea 48.1 (see Watters et al. 2016). Our proposal to make downward adjustments is ... crèche can predict poor recruitment; when the chicks in a cohort crèche at a relatively young age, cohort ...
Meeting Document : WG-EMM-16/46 : Auteur(s): Antarctic Ecosystem Research Division, Southwest Fisheries Science Center and NOAA Fisheries
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region to 2016/17
for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region (Subareas 88.1 and SSRUs 88.2A–B ... effective tagging survival and tag detection rates, both of which have decreased in the recent years ... fits to the data were adequate, and, as in previous assessments, the mark-recapture data provided the ... of non-convergence in the key biomass parameters. The precautionary yield, using the CCAMLR decision ...
Meeting Document : WG-FSA-17/37 Rev. 1 : Auteur(s): S. Mormede
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Cruise Report – Research Project: Demersal finfish distribution, abundance, and their biological characteristics in Statistical Subareas 48.1 (northern area) and 48.2
48.2 (South Orkney Island). The sampling stations were set in approximately the same geographical ... ). As a result of nearing the maximum research catch specified in Subarea 48.1 (95% of authorized ... proposed stations completed (n=13). In Subarea 48.2, we were unable to complete the planned number of ... resulted in a very low sample size with which to estimate standing stock biomass, and thus results ...
Meeting Document : WG-SAM-18/25 : Auteur(s): Delegation of Chile