Résultats de la recherche
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Recommendations on estimating krill escape mortality during fishing operations: the problems and approaches
Abstract: The task to estimate the escape mortality of krill during the fishing operation ... assigned by Scientific Committee requires assessment of the total krill passed through the rope and netting ... parts of trawl and krill amount appeared unviable in the process of escapement. The recommendations ... presented are the first attempt to develop the method of instrumental assessment of the «escape mortality ...
Meeting Document : WG-EMM-10/18 : Auteur(s): V.K. Korotkov and S.M. Kasatkina (Russia)
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Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Division 58.4.3a
Abstract: Catch and effort data recorded by all vessels were analyzed using the latest CCAMLR C2 ... and observer data. The stock size estimate for a research block (5843a) was revised following advice ... in the last WG-SAM meeting. We tentatively recalculated a sample size of Dissostichus spp in each ... block in such a way that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of ...
Meeting Document : WG-FSA-13/40 : Auteur(s): Delegation of Japan
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Revised research plan for the exploratory fisheries for Dissostichus spp. in Subarea 48.6 in 2014/15
Abstract: The stock sizes for five research blocks (486_1, 486_2, 486_3, 486_4 and 486_5) were ... estimated by the Petersen estimator and the CPUE x seabed analogy method using updated CCAMLR C2 data and ... reference area sizes. The stock size estimate using the Petersen estimator was similar to that using the ... , the estimates using the Petersen estimator were different from those using the CPUE method in other ...
Meeting Document : WG-FSA-14/17 : Auteur(s): Delegation of Japan
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Plan of research program of the Russian Federation in Subarea 48.5
Abstract: Closed mostly within the Weddell Sea Subarea 48.5 is one of the closed data-poor CCAMLR ... Subareas. Stock assessment of this area should be calculated basing on the newest and adequate data ... . Despite the difficult ice conditions the Weddell Sea is the largest enclosed near-continental sea of the ... Antarctic which is very similar to the Ross Sea in some respects like shape, bathymetrical profile and ...
Meeting Document : WG-SAM-15/18 : Auteur(s): Delegation of the Russian Federation
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Analysis and modelling of the Soviet Southern Ocean krill fleet
, (ii) I recommend that fishing vessels begin to indicate in their log books the amount of between trawl ... Paper Title: Analysis and modelling of the Soviet Southern Ocean krill fleet Abstract ... / Description: The first part of this document contains an analysis of data pertaining to the Soviet krill ... fleet. The data base consists of the records of 12 different cruises by 8 different research vessels ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 127–235 : Auteur(s): Mangel, M.
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A feedback management strategy for the krill fishery in Subarea 48.1
Abstract: We present a Stage-2 strategy for in-season feedback management (FBM) of the krill ... to the WG-EMM in 2015 and is based on a broad foundation of work undertaken to address a suite of ... action items specified by the WG-EMM. A decision rule to adjust catches in groups of SSMUs (gSSMUs) is ... central to the strategy proposed here. In “plain English” that decision rule has four components. 1) If ...
Meeting Document : WG-EMM-16/48 : Auteur(s): G.M. Watters, J.T. Hinke and C.S. Reiss
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Estimation and correction of migration-related bias in the tag-based stock assessment of Patagonian toothfish in Division 58.5.2
Abstract: Migration has the potential to violate the assumptions of tag recapture models used in ... the assessment of toothfish stocks. Evaluating the potential bias introduced into stock assessments ... and tag-based biomass estimates when the distributions of tagged fish, fishing effort and the ... underlying stock distribution are spatially heterogeneous is currently one of the highest priorities of the ...
Meeting Document : WG-SAM-17/11 : Auteur(s): P. Burch, P. Ziegler, D. Welsford and C. Péron
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Proposal for a winter longline survey of Antarctic toothfish in the northern region of Subareas 88.1 and 88.2
biological samples from a range of locations in the northern regions of Subarea 88.1 and 88.2 and begin in ... Abstract: We propose to test three hypotheses to describe the reproductive ecology of Antarctic ... true, this would retain eggs near the spawning locations under the vast sea ice extent and once broken ... up in the spring, may provide access to a productive pagophilic ecosystem for feeding as well as a ...
Meeting Document : WG-FSA-18/40 : Auteur(s): Delegation of New Zealand
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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 2007
Abstract: Since the commencement of commercial fishing in Australian waters on the Heard Island ... plateau in 1997 an annual random stratified trawl survey (RSTS) has been conducted to assess the stocks of ... Patagonian toothfish (Dissostichus eleginoides) and mackerel icefish (Champsocephalus gunnari). The 2007 ... survey had two main aims: • to assess the abundance of juvenile and adult Dissostichus eleginoides on the ...
Meeting Document : WG-FSA-07/46 : Auteur(s): G.B. Nowara and T. Lamb (Australia)
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Preliminary assessment of mackerel icefish, Champsocephalus gunnari, on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003
(Division 58.5.2) was undertaken using the standard CCAMLR methods, based on the result of a randomly ... stratified trawl survey completed between 16 April and 10 May 2003. The 2003 estimate of abundance was ... approximately 20% of the 2002 estimate. This decline in abundance is consistent with the passage of the strong ... 1997 cohort through the population and relatively weak recruitment in 1999 and 2000. The 1+ fish ...
Meeting Document : WG-FSA-03/32 : Auteur(s): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)