Résultats de la recherche
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Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the number of concentrations and analytical justification for search data
used to estimate the number of Concentrations of krill (in the sense of Butterworth (1988), Mangel ... (1988)) in a given region of the southern ocean. Sample computations are performed, using data collected ... Africa) Title: Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the ... number of concentrations and analytical justification for search data Approval: Approved ...
Meeting Document : WS-KCPUE-89/06 : Auteur(s): M. Mangel (South Africa)
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Review of the efficacy of the early season extension in the Patagonian toothfish fishery in Subarea 48.3 and proposal for further season extension
of the Patagonian toothfish fishery in sub-Area 48.3. This allowed vessels that had been 100 ... days early in 2011 (April 20th). In 2011, following the success of the initial trial, CCAMLR agreed to ... either 2012 or 2013. Given the success of the trial, it is proposed that the start date of the season be ... brought forward to the 16th April and that a further two trial extensions (each of 5 days) be allowed ...
Meeting Document : WG-FSA-13/32 : Auteur(s): M.A. Collins and K. Ross (United Kingdom)
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A comparison of gear selectivity among three fishing gears for Antarctic krill with notes on the demographic patterns and productivity of Antarctic krill during summer 2014
Abstract: Three different trawls were used to sample Antarctic krill for the determination of ... largest range of krill (15mm to 60mm), while the ENGEL trawl captured the narrowest (27 to 61), and the ... number of tows should be considered when designing fishery based sampling to augment research surveys ... using fishing vessels if research gear cannot be accommodated. The patterns of krill length frequency ...
Meeting Document : WG-EMM-14/37 : Auteur(s): C. Reiss (USA) and M. Espino Sanchez (Peru)
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Update of ongoing work on age and growth of Antarctic toothfish (Dissostichus mawsoni) from Division 58.4.1 by Australia and Spain
and 2017 respectively, in order to get data and biological samples which enable an assessment of ... Antarctic toothfish in this so called “data poor” area at the end of the whole experience. From the five ... , Japan, Republic of Korea, France and Spain. Spain and Australia are working on the ageing and growth ... estimates of Antarctic toothfish from 2015 and 2017 respectively. Previous work has been presented to the ...
Meeting Document : WG-FSA-18/54 Rev. 1 : Auteur(s): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde, S. Barreiro, B. Farmer and T. Barnes
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Update of the Antarctic toothfish stock assessment for the Ross Sea by means of the TSVPA separable cohort model
Abstract: An updated Antarctic toothfish (in the Ross Sea) stock assessment was done by means of ... ). All the three sources of information taken separately (and together) indicate historical increase in ... stock biomass, perhaps, due to development (broadening) of the fishery. The results show that, according ... to the Constable & de la Mare (1996) decision rules, annual catches of 23 000 tonnes per year are ...
Meeting Document : WG-SAM-07/9 : Auteur(s): D. Vasilyev, K. Shust, V. Babayan and T. Bulgakova (Russia)
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An evaluation of the performance of the CCAMLR mackerel icefish (Champsocephalus gunnari) harvest control rule as applied within CCAMLR Subarea 48.3
Abstract: A retrospective analysis and sensitivity evaluation of the performance of the CCAMLR ... review indicates that the approach is providing consistent, precautionary estimates of future biomass and ... levels of exploitation that are considered precautionary and would conform to the ecosystem approach by ... Kingdom) Title: An evaluation of the performance of the CCAMLR mackerel icefish (Champsocephalus gunnari ...
Meeting Document : WG-SAM-13/31 Rev. 1 : Auteur(s): C. Darby, T. Earl and H. Peat (United Kingdom)
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Stock assessment of mackerel icefish (Champsocephalus gunnari) in the vicinity of Kerguelen Islands (Division 58.5.1) after the 2013 POKER Biomass survey
collect information of all the fish species including the mackerel icefish, Champsocephalus gunnari. Data ... from this random stratified trawl survey, added to the previous results of 2006 and 2010, was used for ... a short term assessment of C. gunnari on Kerguelen EEZ. The standard CCAMLR methods were used to ... provide potential yields, a catch limit of 840 t is recommended for 2014 and 580 t for 2015. Author(s ...
Meeting Document : WG-FSA-14/11 : Auteur(s): R. Sinegre and G. Duhamel (France)
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The development of the role of the WG-EMM Subgroup on Methods
from one that considers methods for collecting data as part of CEMP to one that considers and develops ... are 4 key areas; 1.to maintain the process of validation and checking of the existing CEMP database, 2 ... . to evaluate appropriate methods for analysis of existing parameters, 3. to develop methods to combine ... management advice. Author(s): K. Reid (United Kingdom) Title: The development of the role of the WG-EMM ...
Meeting Document : WG-EMM-01/17 : Auteur(s): K. Reid (United Kingdom)
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Acoustic assessment of potential bias in abundance estimates of mackerel icefish from trawl surveys
surveys may underestimate the biomass of mackerel icefish. This paper addresses this question by comparing ... trawl surveys are the most reliable and appropriate method to survey stocks of mackerel icefish ... that a significant proportion of the stock occurred in midwater. If this is the case, then bottom trawl ... acoustic signal are discussed. The vertical distribution of mackerel icefish in relation to the diel light ...
Meeting Document : WAMI-01/05 : Auteur(s): E. van Wijk, T. Pauly, A. Constable and R. Williams (Australia)
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Possible causes of variation of Champsocephalus gunnari vertical and horizontal distribution
inaccessible for fishing. Conduction of census surveys during this period is pointless. In spring, during ... beginning of this period (September). Data on stock assessment collected during accounting survey are good ... enough, however, this season is far from suitable for accounting surveys because of severe ice conditions ... . It is not recommended to make stock assessment of fish yielded with bottom fishing gear, as in this ...
Meeting Document : WAMI-01/08 : Auteur(s): Zh.A. Frolkina and S.M. Kasatkina (Russia)