Résultats de la recherche
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Reconciling theoretical versus empirical target strengths of krill; effects of phase variability on the distorted wave Born approximation
, the authors noted that the differences were not entirely due to noise. In this study, the accuracy of ... the DWBA model is further explored. Results indicate that phase variability in the scatter from ... elements of a discretized bent cylinder (krill model) causes a dramatic flattening in the side-lobe regions ... krill TS measurements in McGehee et al. (1998). Thus, by accounting for phase-variability in the ...
Meeting Document : WG-EMM-02/50 : Auteur(s): D.A. Demer and S.G. Conti (USA)
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Longline fishing at Tristan da Cunha: impacts on seabirds
Abstract: Tristan da Cunha and Gough Islands in the central South Atlantic Ocean support globally ... effort, probably has a much greater impact. Observations aboard one vessel in mid-winter suggest a ... bycatch rate of> 1 bird killed per 1000 hooks; this could be even higher in summer when more birds are ... from vessels fishing illegally in Tristan waters, as well as vessels in international waters that do ...
Meeting Document : WG-FSA-01/15 : Auteur(s): N. Glass, I. Lavarello, J.P. Glass and P.G. Ryan (South Africa)
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A proposal to subdivide CCAMLR Statistical Division 58.4.1 using environmental data
Abstract: A precautionary catch limit for krill was established for CCAMLR Division 58.4.1 in ... 58.4.1 is not meridionally homogeneous in its oceanographic or biological characteristics. Division ... basis of environmental data. Krill is more abundant in the western subdivision and its biomass is more ... latitudinally extensive in this area. This observed pattern appears to be historically stable. Because of the ...
Meeting Document : WG-EMM-00/30 : Auteur(s): S. Nicol and T. Pauly (Australia)
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BEACH DEBRIS SURVEY AND INCIDENCE OF ENTANGLEMENT OF ANTARCTIC FUR SEALS ARCTOCEPHALUS GAZELLA AT SIGNY ISLAND, SOUTH ORKNEY ISLANDS 2007/2008
). There was a decrease in the number of plastic packaging bands with only two found in the current season ... (both of which had been cut open), marking a break in the otherwise continued rise in packaging bands ... the longevity of plastics and other materials with a high resistance to degradation in the marine ...
Meeting Document : WG-FSA-08/26 : Auteur(s): M.J. Dunn and C.M. Waluda (UK)
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Effects of different harvesting strategies on the stock of Antarctic icefish Champsocephalus gunnari around South Georgia
years after a good recruitment,- pulse fishing at an interval of 3 years with no fishing in between;- a ... shift in partial recruitment values due to changes in net selectivity. For the projections recruitment ... harvesting alternative. In the absence of regular recruit surveys constant fishing at F0.1 is most likely to ... recruitment. A forward shift in partial recruitment values would not alter yield significantly when fishing at ...
Meeting Document : SC-CAMLR-VIII/BG/47 : Auteur(s): Delegation of Federal Republic of Germany
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East Antarctica Planning Domain MPA Planning Reference Document #1: Draft MPA Report Part 1 – the Planning Domain and Candidate MPAs
Abstract: A draft MPA Report for the East Antarctica Planning Domain was submitted to WG-EMM in ... following advice from Members of WG-EMM in 2014. This updated report is provided in three parts: Part 1- The ... proposed EARSMPA, the individual MPAs and Activities in the Planning Domain (WG-EMM-14/48, Sections 1, 4, 5 ... are presented in SC-CAMLR-XXXIII/BG/39 and SC-CAMLR-XXXIII/BG/40. Author(s): Delegations of Australia ...
Meeting Document : SC-CAMLR-XXXIII/BG/38 : Auteur(s): Delegations of Australia and France
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Antarctic krill; assessment of mesh size selectivity and escape mortality from trawls
(commenced in 2015) assessing size selectivity and escape mortality of Antarctic krill from trawl nets. The ... in Trawls (NEAT), presented in WG-EMM 2012/24, WG-EMM 2013/34, WG-EMM 2014/14 and WG-EMM 2014/16 ... experiment, model size selectivity and escape mortality in codends including different designs and assess the ... size selectivity in the trawl body forward of the codend. Based on end results from the preceding ...
Meeting Document : WG-EMM-15/14 : Auteur(s): B.A. Krafft (Norway), L.A. Krag (Denmark), B. Herrmann, A. Engås, I. Bruheim and S. Nordrum (Norway)
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Revisiting CCAMLR’s Approach to Management – A compendium of papers that explores the implementation of the CAMLR Convention
CCAMLR Symposium. We note that at last year’s meeting CCAMLR agreed to maintain MPA papers in one place ... and papers on topics of importance relevant to CCAMLR’s broader work such as those included in this ... compendium in one place on the CCAMLR website for ongoing use and easy reference. This will assist in the ... objectives and continue its leading role in the conservation of marine living resources through the ...
Meeting Document : CCAMLR-XXXIV/BG/26 : Auteur(s): Submitted by ASOC
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Estimating density and biomass of Antarctic krill (Euphausia superba) around South Shetland using the 2-dB difference method
estimated using an acoustics survey. Acoustic data were collected with 38 and 120 kHz from April 13 to 24 in ... 2016 and 38 and 200 kHz from March 6 to 14 and 38 and 120 kHz on April 27 and May 5 in 2017. Krill were ... and 83 thousand tonnes (CV=31.4%) applying S v difference-3.0-13.8 dB in 2017, respectively. Krill ... density and biomass were significantly higher in 2016 than those in 2017. Author(s): S. Choi, K. Lee and ...
Meeting Document : SG-ASAM-18/08 : Auteur(s): S. Choi, K. Lee and D. An
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Modelling Movement of Antarctic Krill (MMAK): the importance of retention, dispersal and behaviour for krill distribution – a project update
that influence the distribution of Antarctic krill in CCAMLR Area 48, focussing in particular on the ... investigate the impact of physical and behavioural processes on the distribution of krill in this area, at ... simulated transport to the South Orkneys region demonstrates spatial and temporal variability in input and ... being investigated, which will include examination of the role of tides in determining on-shelf ...
Meeting Document : WG-EMM-18/06 : Auteur(s): S.E. Thorpe, E.F. Young, E.J. Murphy, O.R. Godø and A.H.H. Renner