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The development of spatially and temporally controlled measures of survival and tag-detection for the CCAMLR tagging program
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 ... tagging data in CCAMLR Subareas 88.1 and 88.2. Initial results show that the indices developed can provide ... included in the analysis. Subject to further checks, this method could be used to investigate the relative ...
Meeting Document : WG-SAM-12/30 : Автор(ы): S. Mormede and A. Dunn (New Zealand)
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Coastal weather drives foraging behaviour of chinstrap penguins, Pygoscelis antarctica
indicators because their performance is presumed to be linked to the overall function of the ecosystem that ... potentially confounding sources of variability that might impact predator performance such as the effects of ... to the season where no such downwelling was detected, suggesting that changes in climate-driven ... that penguin foraging behaviour is modified by scale-dependent processes, which if not accounted for ...
Meeting Document : WG-EMM-18/P14 : Автор(ы): A.D. Lowther, P. Trathan, A. Tarroux, C. Lydersen and K.M. Kovacs
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Marine mammals and demersal longlines fishery interactions in Crozet and Kerguelen Exclusive Economic Zones: an assessment of the depredation level
(Arctocephalus sp.) interactions with longlines fishing operations were reported by observers onboard of fishing ... and 2005. In Crozet waters, 71% of the 1308 longlines presented marine mammals interactions with ... species alone or in association. In Crozet waters, the CPUE was found to be reduced by both killer whales ... most of the interactions with the fishery. In Kerguelen waters CPUE tended to decrease in presence of ...
Meeting Document : WG-FSA-06/63 : Автор(ы): C. Roche, N. Gasco, G. Duhamel and C. Guinet (France)
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Foraging dynamics of macaroni penguins (Eudyptes chrysolophus) at South Georgia during brood-guard
study were to examine whether animals exploit major oceanographic features where prey may be more ... , whether animals range evenly over the available area. Results show that animals did not range evenly, that ... colonies (or at least overlap was restricted), and that though birds from some colonies foraged within ...
Meeting Document : WG-EMM-06/P4 : Автор(ы): P.N. Trathan, C. Green, J. Tanton, H. Peat, J. Poncet and A. Morton (United Kingdom)
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Length at maturity of the Antarctic skates Amblyraja georgiana and Bathyraja eatonii in the Ross Sea
to obtain accurate estimates of the length at 50% maturity. Results were compared with data collected ... confirm this. The length at 50% maturity of male and female Bathyraja eatonii could not be accurately ... determined, but may be around 85–90 cm and 100–120 cm, respectively. Author(s): M.P. Francis (New Zealand ...
Meeting Document : WG-FSA-03/42 : Автор(ы): M.P. Francis (New Zealand)
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Definition of the problem of estimating fish abundance over an area from acoustic line transect measurements of density
conditions, fish density can be measured with high accuracy along line transects. Observed variations in fish ... problems is given. Among these, the so-called spatial statistical techniques appear to be most promising ...
Meeting Document : WG-KRILL-91/08 : Автор(ы): K.G. Foote and G. Stefánsson (Norway)
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Точность данных о местонахождении и оценок сырого веса криля при применении системы непрерывного лова
catch reporting in accordance with the present conservation measure (CM 21-03) and to investigate ... potential errors in historic catches. WG-EMM-17 requested a plan for how this could be done and this paper ... describes the action taken to respond to the request. Most of the work will be carried out in the 2017/18 ...
Meeting Document : SC-CAMLR-XXXVI/11 : Автор(ы): Delegation of Norway
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The breeding biology and distribution of Adelie penguins: adaptations to environmental variability
, suggests that changes in the population distribution of Adelie penguins may be very rapid in response to ... Abstract: Adelie penguins are long-lived, highly philopatric seabirds that dominate the bird ... concluded that Adelie penguins have discrete subpopulations in the northeastern and southwestern regions of ... Bellingshausen Seas, respectively. We propose that these pack ice areas are the wintering grounds for each ...
Meeting Document : WG-EMM-96/58 : Автор(ы): Fraser, W.R., Trivelpiece, W.Z.
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Glider-based estimates of Antarctic krill in Bransfield Strait, and the West shelf off Livingston Island, Antarctica
Research), equipped with a suite of oceanographic sensors (CTD, fluorometers, and oxygen) and a three ... from 350 glider profiles was 25.0 g m-2, compared with the mean biomass density of 28 g m-2 collected ... the area of ship surveys to overlap with the area surveyed by the glider was 79 g m-2. Mean biomass ... , which overlapped spatially with the glider-based surveys, was 82 g m-2. Developing a proper statistical ...
Meeting Document : WG-EMM-2019/13 : Автор(ы): C. Reiss, A. Cossio, G. Cutter, J. Walsh and G. Watters
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WG-SAM-13
), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa) WG-SAM-13/06 Review of fishery monitoring ... Dissostichus otoliths caught in regions of data-poor fisheries K. Taki and T. Ichii (Japan) WG-SAM-13/20 ... No. 3 in 2012/13 season K. Taki, T. Ichii, T. Iwami and M. Kiyota (Japan) WG-SAM-13/21 Research plan ... CCAMLR Subarea 48.3 C. Darby, T. Earl and H. Peat (United Kingdom) WG-SAM-13/32 Results of a CCAMLR ...
Meeting
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