Search results
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Pairwise tag performance: testing the sensitivity of the tag detection index and the mortality of tagged fish index
temporal variability of fishing operations by pairing each individual tag release or recapture event with ... with respect to the tag detection index in the Ross Sea region. Here we present the results of ... assessments for the Ross Sea and Subarea 88.2 fisheries, with respect to both tag releases and tag recaptures ... . This recommendation is in accordance with that of most of the participants at WG-SAM 2013 (paragraph ...
Meeting Document : WG-FSA-13/50 : Author(s): S. Mormede (New Zealand)
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A single-area stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the 2004/05 season
). A range of model sensitivities were examined, with the base case assuming the Ross Sea fishery as a ... single homogeneous area (single-area) with catch removals from three spatially based fisheries (shelf ... , slope, and north). Model fits to the data were adequate, with the tag-release and recapture data ... parameters. However, multi-chain comparisons and sensitivities with fixed selectivity ogives suggested that ...
Meeting Document : WG-FSA-05/33 : Author(s): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)
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Final report of the CEMP Special Fund project to develop an image processing software tool (SPPYCAMS) for analysis of camera network monitoring data
processing software tool for analysis of camera network monitoring data’. The project was initiated with ... CEMP Fund support has been superseded with a new version which has additional image-processing, data ... -processing and data-reporting features. These features, combined with new R code written to reformat ... estimation of CEMP parameters that is consistent with recent agreed changes to estimation methods and CEMP ...
Meeting Document : WG-EMM-2019/44 : Author(s): C. Southwell, A. Sikka, J. Cusick, H. Achurch, A. Lashko, K. Newbery, M. Salton, J. Kool, J. Hinke, G. Watters, M. Santos, G. Milinevsky, M. Korczak-Abshire, N. Ratcliffe, P. Trathan, A. Barbosa and L. Emmerson
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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 ... tonnes in 2019/20 and 2020/21 is consistent with the application of the CCAMLR harvest control rule ...
Meeting Document : WG-FSA-2019/29 : Author(s): T. Earl and E. MacLeod
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Can otolith elemental signatures record the capture site of Patagonian toothfish (Dissostichus eleginoides), a fully marine fish in the Southern Ocean?
discriminated toothfish by geographic region with near complete success: only 5% of fish caught off South ... America classified to sampling areas therein with 79-84% success, and Antarctic fish to sampling areas ... therein with 50-67% success. These results compare favourably with rates of classification for estuarine ...
Meeting Document : WG-FSA-06/P1synpro : Author(s): Ashford, J.R., C.M. Jones, E. Hofmann, I. Everson, C. Moreno, G. Duhamel and R. Williams
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Can otolith elemental signatures record the capture site of Patagonian toothfish (Dissostichus eleginoides), a fully marine fish in the Southern Ocean?
discriminated toothfish by geographic region with near complete success: only 5% of fish caught off South ... America classified to sampling areas therein with 79-84% success, and Antarctic fish to sampling areas ... therein with 50-67% success. These results compare favourably with rates of classification for estuarine ...
Meeting Document : WG-FSA-06/P1text : Author(s): Ashford, J.R., C.M. Jones, E. Hofmann, I. Everson, C. Moreno, G. Duhamel and R. Williams
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PROPOSAL TO STRENGTHEN CCAMLR’S PORT INSPECTION SCHEME TO PREVENT, DETER AND ELIMINATE ILLEGAL, UNREPORTED AND UNREGULATED FISHING
improve compliance with that measure. Since the Commission’s 2009 annual meeting, the FAO Conference ... its scope and the implementation of minimum standards consistent with the FAO Agreement. Moving ... towards a harmonized set of minimum standards should ultimately facilitate Members’ compliance with ... 2008 and 2009 to CM 10-03. We look forward to further discussing this proposal with Members of the ...
Meeting Document : CCAMLR-XXIX/35 : Author(s): Delegations of the USA and the European Union
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Diet and trophic niche of Macrourus spp. (Gadiformes, Macrouridae) in the Ross Sea region of the Southern Ocean
. Overall, amphipods were the dominant prey found in Macrourus spp. stomachs with an index of relative prey ... carnivorous. Other important prey were copepods (especially for fish with total length less than 30 cm), krill ... opisthopterus). Minor prey found in stomachs included isopods, mysids, salps and polychaetes, with rocks and ... ) were generally consistent with stomach contents. Carbon isotope results (δ13C =-24.7±0.8‰) were ...
Meeting Document : WG-EMM-12/P03 : Author(s): M.H. Pinkerton, J. Forman, D.W. Stevens, S.J. Bury and J. Brown
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An illustrative management procedure for exploring dynamic feedback in krill catch limit allocations among small-scale management units
which simulates the “true” dynamics of the resource with tests across a wide range of scenarios for the ... here have a feedback structure, and hence are able to react and self-correct. It is important, as with ... subdivide the krill catch between SSMUs. Different MPs are then simulation tested with their performances ... average krill catches per SSMU associated with each MP. The key assumption made here is that data will be ...
Meeting Document : WG-EMM-06/28 : Author(s): É. Plagányi and D. Butterworth (South Africa)
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Uncertainty in acoustic surveys of Antarctic krill
acoustic surveys. The variance in system calibration with a standard sphere was evaluated in relation to ... different standard spheres with the results of a calibration by self-reciprocity (Demer and Hewitt ... with a standard sphere were estimated as-1.2 dB and ±0.3 dB, respectively. Uncertainty in estimating ... higher than those calculated disregarding biases due to DVM, with a standard deviation of 0.6 dB ...
Meeting Document : WG-EMM-95/72 : Author(s): Demer, D.A.