Résultats de la recherche
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Notification of research-in-progress in an Australian tuna fishery of relevance to the conservation of Convention Area seabirds
seabirds. The research plan includes (a) a line weighting experiment on a chartered tuna vessel to ... was completed in April 2005. (b) a manipulative experiment testing the effectiveness of various ... the fishery) are most abundant on fishing grounds. A summary of findings of the line weighting ...
Meeting Document : WG-FSA-05/13 : Auteur(s): G. Robertson, B. Wienecke, K. Lawton and B. Baker (Australia)
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Geographical differences in the condition, reproductive development, sex ratio, and length distribution of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Statistical Subarea 88.1)
Abstract: A number of morphological and reproductive measurements made seasonally on Antarctic ... differences in a number of indices from toothfish found on the Ross shelf proper, as distinct from those ... part of the Ross Sea showed that this component of the population had a unimodal length distribution at ... a consistent peak over all sampling seasons in comparison with the southern group in which the ...
Meeting Document : WG-FSA-05/52 : Auteur(s): J.M. Fenaughty (New Zealand)
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Geographical differences in the condition, reproductive development, sex ratio and length distribution in Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Statistical Subarea 88.1)
Abstract: A number of morphological and reproductive measurements made on Antarctic toothfish ... April. Results of this study indicate measurable differences in a number of indices from toothfish found ... the population was more advanced in reproductive development, were in poorer condition, showed a ... consistent and significant higher ratio of males to females, and showed a unimodal length distribution at a ...
Meeting Document : WG-FSA-04/28 Rev. 1 : Auteur(s): J.M. Fenaughty (New Zealand)
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Beach debris survey – Main Bay, Bird Island, South Georgia 2000/01
Island, South Georgia, a total of 290 items were collected. This represents a 33.3% decrease on the total ... ), but to a lesser extent than in previous years, whilst miscellaneous debris accounted for almost as ... great a proportion of all debris (45%). Marine debris remains a cause for concern, and the survey ...
Meeting Document : SC-CAMLR-XXI/BG/03 : Auteur(s): Delegation of the United Kingdom
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Influence of sampling protocol on diet determination of gentoo penguins, Pygoscelis papua and Antarctic fur seals, Arctocephalus gazella
. The collection of diet samples on three occasions over a two week period was compared with collecting ... all samples during a single session, as current CEMP monitoring protocols recommend. Some differences ... sampled. There were no differences in diet composition between protocols and although body mass was a ... small and a variety of sampling protocols can produce results acceptable for inter-annual monitoring ...
Meeting Document : WG-EMM-99/29 : Auteur(s): S.D. Berrow, R.I. Taylor and A. Murray (United Kingdom)
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Marine Protected Areas in the Southern Ocean: update on current status of designated areas
Abstract: The development of a representative system of Antarctic marine protected areas (MPAs ... (ASMAs) with both marine and terrestrial components (all located south of 60°S). A further 3 MPAs have so ... is currently limited and further areas will need to be designated in order to achieve a more ... representative system. The information compiled here provides a baseline against which additional proposed areas ...
Meeting Document : WS-MPA-11/19 : Auteur(s): S.M. Grant and P.N. Trathan (UK)
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PREDICTING THE VULNERABILITY OF BRYOZOANS AND SPONGES TO DISTURBANCE USING LIFE-HISTORY CHARACTERISTICS
form important biogenic habitat in the Southern Ocean. Data were extracted from a global database of ... life-history characteristics. Bryozoans showed a strong negative relationship between growth rate and ... age and a strong positive relationship between growth rate and temperature. A multiple regression ... disturbance. Demosponges showed a strong positive relationship between maximum size and age while there were ...
Meeting Document : WS-VME-09/12 : Auteur(s): Martin-Smith, K.
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Performance of an acoustic sonde design
is widely recognized. At a U.S. GLOBEC workshop in 1991, one of the considered problems was measuring ... . Here, a specific design is evaluated: ten more or less standard, approximately logarithmically spaced ... frequencies are chosen. Each frequency represents the resonant condition of a circular piston transducer with ... strength is treated as a parameter, with investigated values from-130 to-50 dB. Performance assessment for ...
Meeting Document : WG-EMM-95/09 : Auteur(s): Foote, K.G.
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Extending ecological monitoring to underpin the development of feedback management approaches for the Antarctic krill fishery
Abstract: CCAMLR has agreed to consider and develop a feedback management approach for the krill ... fishery. Such a management approach may also require the development of a new or extended monitoring ... of the issues associated with the development of a new monitoring programme, outlining one possible ... that it can agree a way forward and make best use of the recently established CEMP Fund. Author(s ...
Meeting Document : WG-EMM-12/04 : Auteur(s): P.N. Trathan (UK), H.J. Lynch (USA), C. Southwell (Australia), P.T. Fretwell (UK), G. Watters (USA) and N. Ratcliffe (UK)
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An initial analysis of data provided from the deployment of scientific observers in the krill fishery
Abstract: An analysis of the observer data provided from the krill fishery was undertaken using a ... range of complementary methods of data quality control and variance investigation. A sample pooling ... scales and indicated that krill hauled in a given month/season/area were similar enough to be pooled to ... statistically significant and a made a substantial contribution to the overall random variation. Recommendations ...
Meeting Document : WG-EMM-12/60 : Auteur(s): S. Thanassekos (CCAMLR Secretariat), S. Candy (Australia), E. Appleyard (CCAMLR Secretariat), S. Kawaguchi (Australia) and K. Reid (CCAMLR Secretariat)