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Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands
is that one buoy traveled all the way to South Georgia and has been being trapped in a winter fishing ... ground for krill.) High concentrations of chlorophyll a were also measured in the shelf waters, showing a ... spatial correlation between krill and chlorophyll a distributions. It is therefore considered that both ... hydrodynamic and food environments may accumulate krill. a regular fishing ground on the northern shelf of ...
Meeting Document : WG-KRILL-91/22 : Автор(ы): Delegation of Japan
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Report on bottom fisheries and vulnerable marine ecosystems: draft template and workplan
Abstract: The WG-FSA Subgroup on VMEs was tasked with providing a draft template of a Report on ... Vulnerable Marine Ecosystems to WG-EMM and WG-FSA in 2010. This paper provides a draft template, including ... Scientific Committee and its working groups have been embedded within this structure in order to give them a ... arise from WG-FSA. It is envisaged that, following comments by WG-EMM, a draft report will be generated ...
Meeting Document : WG-EMM-10/15 : Автор(ы): WG-FSA Subgroup on VMEs
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At-sea distribution and diet of an endangered top predator: links of white-chinned petrels with commercial longline fisheries
Abstract: Incidental seabird mortality associated with longline commercial fishing is a worldwide ... that at a large scale spatial and temporal overlap occurred and varied among areas and with breeding ... stage. Dynamic analysis (detection for each bird location of any operating vessel within a time/space ... window) revealed few overlap at a small scale. Our study revealed a mismatch between large and small ...
Meeting Document : WG-FSA-10/P01 : Автор(ы): K. Delord, C. Cotté, C. Péron, C. Marteau, P. Pruvost, N. Gasco, G. Duhamel, Y. Cherel and H. Weimerskirch
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The development of spatially and temporally controlled measures of survival and tag-detection for the CCAMLR tagging program
Abstract: A reliable commercial tagging program is critical to the successful assessment and ... management by CCAMLR of a number of toothfish fisheries in Antarctica. The evaluation of the tagging ... programme relies on two key aspects (i) that the tagged fish have a good chance of survival and (ii) that ... . We propose that, by controlling for the spatial and temporal confounding factors using a case-control ...
Meeting Document : WG-SAM-12/30 : Автор(ы): S. Mormede and A. Dunn (New Zealand)
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Trophic interactions and population trends of killer whales (Orcinus orca) in the southern Ross Sea
Sea killer whales (Type-C; RSKWs), a fishing-eating ecotype, has continued to decrease in a pattern ... coincident with a decrease in the number and size of an important prey: Antarctic toothfish (Dissostichus ... important to the whales, a relationship with potential parallels to that known between well-studied fish ... reliable, enhanced foraging opportunities as prey are exposed one area at a time during summer. Given the ...
Meeting Document : WG-FSA-12/P03 : Автор(ы): D.G. Ainley and G. Ballard
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Using outputs from spatial population models of Antarctic toothfish in the Ross Sea region to investigate potential biases in the single population model
Abstract: We present a method to evaluate potential biases and uncertainty in the tagging ... were then used in a single area stock assessment model derived from the stock assessment model of ... historical footprint of the fishery. However, the results when using a similar model that allowed for fish to ... provide a useful tool to evaluate potential bias and uncertainty in our understanding of the stock ...
Meeting Document : WG-FSA-12/45 : Автор(ы): S. Mormede and A. Dunn (New Zealand)
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Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of relative mortality and tag-detection rates
Abstract: A reliable commercial tagging program is critical to the successful management by ... CCAMLR of a number of toothfish fisheries in Antarctica, but the evaluation of tagging performance has ... , by controlling for the spatial and temporal confounding factors using a case-control study design, we ... haul. This method is a good candidate to investigate the relative performance of the CCAMLR tagging ...
Meeting Document : WG-FSA-12/47 Rev. 1 : Автор(ы): S. Mormede and A. Dunn (New Zealand)
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Physical and behavioural influences on larval fish retention: contrasting patterns in two Antarctic fishes
retention of the planktonic stages (eggs and larvae) of marine fish can play a key role in the maintenance ... of adult stocks. Here we use a numerical modelling approach to examine the influence of oceanographic ... larvae was predicted to be 5.3%, considerably lower than that of C. gunnari (31.3%), a difference related ... contribution to overall retention from spawning sites on the southwest South Georgia shelf. In addition, a ...
Meeting Document : WG-FSA-12/P10 : Автор(ы): E.F. Young, J. Rock, M.P. Meredith, M. Belchier, E.J. Murphy and G.R. Carvalho
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Towards the development of an assessment of stock abundance for Subarea 88.2 SSRUs 88.2C–G
Abstract: This paper frames a discussion for improving the assessment of toothfish abundance for ... SSRUs 88.2C–G. We initially provide a characterisation of the fishery and a summary of available tagging ... these fishing grounds as a condition of fishing in the slope region (SSRUs 88.2C–G). This condition ... least 3 tags per tonne in the short term. In addition to improving estimates of abundance a higher ...
Meeting Document : WG-FSA-14/59 : Автор(ы): S.M. Hanchet and S.J. Parker (New Zealand)
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2015-16 Research plan in Division 58.4.4 for Dissostichus spp.
, Shinsei maru No. 3, had conducted research fishing in accordance with a research plan submitted under CM ... its intention to achieve a robust stock assessment that would provide advice on a catch limit ... according to CCAMLR decision rules. This paper aims to present a research plan for 2015/2016 that takes into ... estimated during WG-FSA 2014 using a CASAL model constructed for D. eleginoides. The vulnerable biomass was ...
Meeting Document : WG-SAM-15/52 : Автор(ы): Delegation of France
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