Résultats de la recherche
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Proposal for a CCAMLR sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea
Abstract: The exploratory fishery for Dissostichus spp. has now been operating for 14 years in ... Subarea 88.1 and for nine years in Subarea 88.2. Associated research has led to an assessment of the ... fisheries potential yield, but a source of ongoing uncertainty in the stock assessment concerns recruitment ... time from the fishery. At its 2010 meeting, the Scientific Committee agreed that a time series of ...
Meeting Document : WG-SAM-11/16 : Auteur(s): S.M. Hanchet, S. Mormede, S.J. Parker and A. Dunn (New Zealand)
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 1996 winter and 1996/97 pup-rearing season
Abstract: The results of the survey of entanglement of Antarctic fur seals at Bird Island, South ... Georgia for the sixth consecutive winter (1996) and eighth consecutive summer (1996/97) are reported. In ... winter 17 seals were observed entangled, double the number in 1995 and the third highest total so far. As ... proportion. Synthetic string (fishing line) (47%), fishing net (24%) and packaging bands (18 %) were the main ...
Meeting Document : SC-CAMLR-XVI/BG/06 : Auteur(s): Delegation of the United Kingdom
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Climate change and the role of CCAMLR
Abstract: Abstract Fishing magnifies the sensitivity of ecosystems to the effects of climate ... change. In the Southern Ocean, CCAMLR has the capacity to reduce this sensitivity by appropriately ... adapting fishing strategies. ASOC advocates that the role of CCAMLR in the climate change context continues ... to lie in: 1) coordinating with the Committed on Environmental Protection (CEP) in addressing climate ...
Meeting Document : CCAMLR-XXIX/BG/19 : Auteur(s): ASOC Observer
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Research and monitoring to support an MPA in the Ross Sea Region
Abstract: Conservation Measure 91-04 establishes the requirement for research and monitoring ... research and monitoring plans shall, to the extent necessary and inter alia, specify “(a) scientific ... research pursuant to the specific objectives of the MPA; (b) other research consistent with the specific ... objectives of the MPA; and/or (c) monitoring of the degree to which the specific objectives of the MPA are ...
Meeting Document : WG-EMM-12/46 : Auteur(s): G.M. Watters and C.S. Reiss (USA)
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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)