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Interactions between seabirds and deep water hake trawl gear: an assessment of impacts in South African waters 2004/05
during 20 trips on 14 vessels between mid-2004 and end 2005. Long-winged albatrosses were killed most ... dumping in summer. Serious warp incidents were independent of age among albatrosses, but there was a ... tendency for immature gannets to have a higher interaction rate than adults. Deaths resulting from ... entanglement in fishing nets occurred at an average rate of 3.02 (0.91-5.44) birds per 100 trawls. Estimating ...
Meeting Document : WG-FSA-06/41 : Автор(ы): B.P. Watkins, S.L. Petersen and P.G. Ryan (South Africa)
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Discussion on recent results from an integrated assessment of Antarctic krill (Euphausia superba) in Subarea 48.1
(either decreasing or increasing) in krill biomass have not been apparent over the past 30+ years ... -assessment framework for Antarctic krill (Euphausia superba) to assimilate multiple sources of survey data ... from three of the models provide a robust picture of changes in the krill population. An annual model ... consider how the integrated assessment framework can be used to provide management advice for the krill ...
Meeting Document : WG-EMM-14/35 : Автор(ы): G.M. Watters, C.S. Reiss and D. Kinzey (USA)
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Disentangling the influence of three major threats on the demography of an albatross community
threats on the demography of seabird communities is vital for evidence-based conservation. Using 20 years ... variability in breeding probability, which declined in all three species. For black-browed albatrosses, effort ... and M.A. Hindell Title: Disentangling the influence of three major threats on the demography of an ... : Content Approved Document Release Consent: No Delegation responsibility for releasing documents ...
Meeting Document : WG-FSA-2019/34 : Автор(ы): J.B. Cleeland, D. Pardo, B. Raymond, G.N. Tuck, C.R. McMahon, R.A. Phillips, R. Alderman, M.-A. Lea and M.A. Hindell
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r-cc-viii-aE.pdf
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application/pdf attached to:WG-DAC-89
Meeting Report : WG-DAC-89
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INTERACTIONS OF PATAGONIAN TOOTHFISH FISHERIES WITH KILLER AND SPERM WHALES IN CROZET EXCLUSIVE ECONOMIC ZONE: AN ASSESSMENT OF DEPREDATION LEVELS AND INSIGHTS ON POSSIBLE MITIGATION SOLUTIONS
study (i) provides estimations of annual depredation levels on a 5-years period (2003-2008), (ii ... represents a financial loss of approximately 10 millions €. Killer whales were found to be responsible for ... the largest part of this loss (70%) while sperm whales had a lower impact (30%). Photo-identification ... will be tested on an experimental campaign which will take place in early 2010. Author(s): P. Tixier ...
Meeting Document : WG-IMAF-09/12 : Автор(ы): P. Tixier, N. Gasco, G. Duhamel and C. Guinet (France)
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The Southern Ocean Observing System (SOOS): an update
Science and Implementation Strategy will be published in October 2011, an International Project Office has ... in implementation of the SOOS, for example through the CCAMLR Ecosystem Monitoring Programme (CEMP ... ). CCAMLR are invited to appoint an ex-officio representative to the SOOS Steering Committee. A SOOS Initial ... , and an Executive Officer, Louise Newman has been appointed. Currently, a website is being developed ...
Meeting Document : CCAMLR-XXX/BG/13 : Автор(ы): A joint submission by SCAR and SCOR
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Report on an Antarctic cetacean survey on board a Chilean fishing vessel in February 2016
distance sampling survey for cetaceans along track. During 10 survey days, 463.1 km were covered on effort ... for fin-, humpback and, to a lesser extent, sei whales. If any fishing effort is to be undertaken in ... these areas, no disturbance within these comparably small areas of high animal density should be ... Title: Report on an Antarctic cetacean survey on board a Chilean fishing vessel in February 2016 ...
Meeting Document : WG-FSA-16/19 : Автор(ы): S. Viquerat, H. Herr, K.-H. Kock and P. Arana
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An update on the ageing of Antarctic toothfish, Dissostichus mawsoni, from East Antarctica and the Amundsen Sea
preparation method. Therefore, either method can be used to provide reliable age estimates for Antarctic ... Abstract: This paper presents an update on the ageing of Antarctic toothfish, Dissostichus ... Zealand reference collection for Antarctic toothfish, with all pairwise comparisons between readers and ... and the other by thin sectioning, in order to assess the comparability of age estimates derived from ...
Meeting Document : WG-FSA-17/15 : Автор(ы): G. Nowara, B. Farmer, T. Barnes, P. Ziegler and D. Welsford
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Calibration of an acoustic echo-integration system in a deep tank, with system gain comparisons over standard sphere material, water temperature and time
outlines the theory and procedures for calibrating an echo integration acoustic system with a standard ... Paper Title: Calibration of an acoustic echo-integration system in a deep tank, with system gain ... sphere. It presents the results of an extensive calibration of a Simrad EK500 scientific echosounder with ... an echo integration acoustic survey. To minimise these effects, the TS gain and SA gain parameters ... procedures for calibrating an echo integration acoustic system with a standard sphere. It presents the ... ), target depth (0.8 to 7.5 m), and time (pre- and post-cruise). The calibration was in preparation for an ... . Assuming an accuracy of 0.5 dB for calibration with a standard target, the error of estimating mean target ... provide less troubling results. For instance, if the ES 120 transducer is used, an angle sensitivity of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 127–144 : Автор(ы): Demer, D.A. and R.P. Hewitt
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Influence of data quality and quantity from a multiyear tagging program on an integrated fish stock assessment
Abstract: Using a modeling framework for toothfish (Dissostichus spp.) population dynamics ... an integrated tag-based assessment are influenced by various aspects of a multiyear tagging program ... -overlap), numbers of tagged fish, duration of the tagging program, using catch-at-length or catch-at-age ... % tag size-overlap were sufficient for robust and unbiased assessments. Particularly in the early stages ...
Meeting Document : WG-FSA-13/P03 : Автор(ы): P. Ziegler
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