Search results
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On the scientific observation and krill escape mortality in the krill fishery
national scientific observer onboard krill fishing vessel became mandatory. In 2008, the Ukraine ... regards to the subdivision of the precautionary catch limit among SSMUs in Area 48 (CCAMLR XXVII/43 ... so as to provide more systematic coverage by international/national scientific observers in the krill ... to have systematic observer coverage in the krill fishery. Experiments to estimate krill escapement ...
Meeting Document : CCAMLR-XXIX/45 : Author(s): Delegation of Ukraine
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Dense populations of the Antarctic scallop (Adamussium colbecki) in Terra Nova Bay (Subarea 88.1J): potential VMEs adjacent to the Terra Nova Bay ASPA (No. 161)
Mario Zucchelli is located, have been largely investigated in the last couple of decades. All the ... abundant and conspicuous species in the area, although some of its denser populations are found outside the ... perspectives. Particularly interesting is the evidence that populations in Terra Nova Bay area seem to be ... genetically different to some extent, and are even more different from those in the McMurdo Sound area ...
Meeting Document : WG-EMM-12/23 : Author(s): M. Chiantore and M. Vacchi (Italy)
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2018 International Conference on Assessing Status and Trends of Habitats, Key Species and Ecosystems in the Southern Ocean, Hobart, Tasmania, Australia
ecosystems in the Southern Ocean in April 2018. This background paper is an invitation to Members of the SC ... -CAMLR to participate in working groups on four themes that will be of benefit to SC-CAMLR: (1 ... ) Assessments of status and trends in habitats, species and ecosystems, and the causes of change (attribution ... to assess status and trends in global ocean ecosystems; the Southern Ocean Observing System; the SCAR ...
Meeting Document : SC-CAMLR-XXXIV/BG/22 : Author(s): Delegation of Australia
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Reproduction of the mackerel icefish (Champsocephalus gunnari) and its implications for fisheries management in the Atlantic sector of the Southern Ocean
for fisheries management in the Atlantic sector of the Southern Ocean Abstract / Description ... been reviewed and discussed in the light of existing conservation measures. Length at first spawning is ... Islands and in the South Shetland Islands/Antarctic Peninsula region. Around South Georgia spawning takes ... probably occurs in June/July. Around South Georgia males start their spawning migration earlier than ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 51–68 : Author(s): Kock, K.-H.
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Plan of research program of the Russian Federation in Subarea 48.5
subareas, where stock assessment should be carried out. In spite of hard ice conditions at most part of the ... could be found in geographical location, bathymetric profile, currents system and follows from results ... promising area for exploratory fishery of Dissostichus sp. However, fishery in Subarea 48.5 is closed on the ... reliable stock assessment and following estimation of precautionary limits in accordance with CCAMLR ...
Meeting Document : WG-FSA-16/15 Rev. 1 : Author(s): Delegation of the Russian Federation
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A multivariate approach to examining patterns in research fishing activities using the SSRU 88.2A–B North survey as an example
Abstract: The WG-SAM in 2016 “agreed the importance of identifying a set of diagnostics and clear ... criteria to assess the likelihood that a vessel is operating as would be expected in normal research ... activities”, further noting that a characterisation of fishing activities was also required in order to ... achieve such a goal (WG-SAM 2016, paragraph 4.19). In this paper, we further develop the analysis of Large ...
Meeting Document : WG-FSA-16/46 : Author(s): S. Mormede, A. Dunn, S.J. Parker, T. Earl, C. Darby, M. Söffker and O.R. Godø
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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 : Author(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 : Author(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 : Author(s): S.G. Candy (Australia)
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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 : Author(s): S. Mormede