Résultats de la recherche
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A false positive in the CCAMLR tag overlap statistic arising from low catch volume and consequent limited sample size
Abstract: The draft CCAMLR compliance report has recorded that when fishing in Subarea 88.2 in ... 2013/14 the vessel Argos Georgia achieved a tag overlap statistic of 52% rather than the required ... minimum of 60% as specified in CM 41-01. A review of the data indicates that the number of fish tagged was ... above the rate per tonne required by CM 41-10, but due to sampling noise the distribution of the length ...
Meeting Document : WG-FSA-14/31 : Auteur(s): C. Darby (United Kingdom)
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Plan of research program of the Ukraine in Subarea 48.2 in 2016 (second season)
Abstract: During March-April 2015 Ukraine began the research within statistical subarea 48.2 in ... accordance with the recommendations of CCAMLR-XXXIII. The certain number of the following bottom long line ... surveys are proposed to be conducted during March-April 2016. The research surveys will be conducted by ... the Ukrainian flagged FV SIMEIZ. The data collected in first year of the research showed the ...
Meeting Document : WG-SAM-15/40 : Auteur(s): Delegation of Ukraine
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Preliminary results of a dedicated cetacean sighting vessel-based krill survey in East Antarctica (115°–130°E) during the 2015/16 austral summer season
Abstract: At the EEM-15, it was agreed that detailed information on survey design of the ... dedicated cetacean sighting vessel-based krill (CSVK) survey by Japan, would be submitted with data from the ... first of these annual surveys to the next meeting of WG-SAM (2016), to assess the survey design, in ... particular the trade-offs between the primary goal of gathering information on cetaceans versus the secondary ...
Meeting Document : WG-SAM-16/38 : Auteur(s): K. Matsuoka, A. Wada, T. Isoda, T. Mogoe and L.A. Pastene
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ASSESSMENT OF SPATIAL-TEMPORAL DYNAMICS OF STANDARDIZED CPUE FOR KRILL FISHERY IN THE AREA 48
Abstract: The spatial-temporal dynamics of standardized abundance indices of krill in Area 48 ... based on the CCAMLR catch statistics was analyzed using GLMM with Tweedie’s distribution.In the ... yesteryear the authors revealed “diagnostics specificity” of GLMM tuning for CPUE standardization: many hauls ... to be interpreted as “outliers”, i.e. the hauls where residuals significantly deviated from the ...
Meeting Document : WG-EMM-11/28 : Auteur(s): S.M. Kasatkina and P.S. Gasyukov (Russia)
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Comparison of estimators of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial Distribution
Abstract: The incorporation of “effective sample size” (ESS) in integrated assessments is an ... approximate but simple way of modelling the distribution of catch-at-age or catch-at-length frequencies using ... frequencies. The ESS applied within the definition of the negative log-likelihood contribution to the ... objective function in CASAL determines the implicit weight given to the commercial catch-at-age or catch-at ...
Meeting Document : WG-SAM-07/7 : Auteur(s): S.G. Candy (Australia)
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Preliminary assessment of the South Georgia ray populations
Abstract: We modelled the ray population at South Georgia using a surplus production model ... implemented in a Bayesian framework. Catch and CPUE data were reconstructed for the time series 1985 – 2006 ... from a variety of sources, and included the consideration that since 2004 the practice of cutting rays ... off lines at the water surface should have increased survivorship of discarded rays, although this ...
Meeting Document : WG-SAM-07/11 : Auteur(s): D.J. Agnew, R. Mitchell, T. Carruthers, J. Roberts, R. Hillary and J. Pearce (United Kingdom)
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Report on a random stratified trawl survey to estimate distribution and abundance of Dissostichus eleginoides and Champsocephalus gunnari conducted in the Heard Island region (Division 58.5.2), May–June 2006
Abstract: Random stratified trawl surveys (RSTSs) of the distribution and abundance of demersal ... fish species on the Heard Island plateau have been conducted annually since 1997. The survey conducted ... in May-June 2006 had two main aims: • to assess the abundance and size structure of juvenile and ... adult Dissostichus eleginoides on the shallow and deep parts of the Heard Island Plateau.] • to assess ...
Meeting Document : WG-FSA-06/42 Rev. 1 : Auteur(s): G.B. Nowara, R. Williams and T. Lamb (Australia)
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Pilot test of techniques to mitigate seabird interactions with catcher processor vessels in the Bering Sea pollock trawl fishery: final report
vessels operating the Bering Sea fishery for pollock (Theragra chalcogramma) and that are practical and ... the netsounde cable (3rd wire). Third wire mitigation techniques included pulling the third wire as ... close as possible to the water at the stern with a snatch block, paired streamer lines and various ... deterrents attached directly to the third wire (3rd wire scarers). Warp deterrents included a boom array or a ...
Meeting Document : WG-FSA-05/37 : Auteur(s): E.F. Melvin, K.S. Dietrich and T. Thomas (USA)
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The use of Antarctic shags to monitor coastal fish populations: evaluation and proposals after five years of test of a standard method
Abstract: This overview reflects the main points of the feasibility of using the Antarctic Shag ... . Likewise, the history of the development of this theme in relation to the EMM and FSA Working Groups of ... CCAMLR since the onset of the 1990s until the recent five year testing period of the Standard Method, is ... described. Among other conclusions, the analysis of pellets is an adequate method to estimate qualitatively ...
Meeting Document : WG-EMM-03/5 : Auteur(s): R. Casaux and E. Barrera-Oro (Argentina)
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REPORT ON ACTIVITIES OF THE SCIENTIFIC COMMITTEE ON ANTARCTIC RESEARCH (SCAR) 2007/08
Abstract: This paper reports on the various activities conducted by or involving SCAR that relate ... biennial business and delegates meetings, and the SCAR/IASC 2008 IPY Open Science Conference, as well as ... reports on progress with the Evolution and Biodiversity in the Antarctic (EBA) programme, SCAR-MarBIN, the ... Southern Ocean Continuous Plankton Recorder Survey and the Census of Antarctic Marine Life (CAML) project ...
Meeting Document : CCAMLR-XXVII/BG/42 : Auteur(s): SCAR Observer to CCAMLR (G. Hosie, Australia)