Résultats de la recherche
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Effects of recruitment variability and natural mortality on Generalised Yield Model projections and the CCAMLR Decision Rules for Antarctic krill
maintaining spawning biomasses above 20% of unfished biomass in more than 90% of the trials. As the values for ... %, 20%, or 30% were added to the observed recruitment values. The CCAMLR "depletion" decision ... below 20% of its unfished value, meeting the CCAMLR "depletion" decision rule for recruitment ... Peninsula were used as proxies for recruitment variability. Simulations were run for 21 years with either no ...
Meeting Document : WG-EMM-12/26 : Auteur(s): D. Kinzey, G. Watters and C. Reiss (USA)
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Preliminary assessment of long-term yield of Patagonian toothfish (Dissostichus eleginoides) for the Heard Island region (CCAMLR Division 58.5.2) based on a random stratified trawl survey in June 2005
58.5.2 in the vicinity of Heard Island in June 2005 to provide the information for an assessment of short ... for the area of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods. It also ... growth parameters, including the use of a length-at-age vector, (iii) consideration of a vulnerability ... function for the future projections based on full selection of adult fish, and (iv) consequence of reducing ...
Meeting Document : WG-FSA-05/30 : Auteur(s): A.J. Constable, T. Lamb and R. Williams (Australia)
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Fishery Report 2017: Exploratory fishery for Dissostichus mawsoni in Division 58.4.1
Description / Abstract: Fishery Report 2017: Exploratory fishery for Dissostichus mawsoni in ... mawsoni) in Division 58.4.1. Prior to 2017, this fishery was an exploratory fishery for Dissostichus spp ... in 2007, which exceeded the catch limit set for that year by 6%. The catch limit was again exceeded ... framework for designing and undertaking research fishing designed to lead to an assessment of these ... development phase, with a set of decisions and review for the progression between stages. 4 11. In ...
Document : Site Section: Publications
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Stock structure of Antarctic toothfish in Statistical Area 88 and implications for assessment and management
Abstract: We review the stock structure of Antarctic toothfish in Statistical Area 88 with the ... information from genetic studies, otolith microchemistry, stable isotopes, tagging, size and age structure ... biological stocks with limited mixing, especially at adult stages: a Ross Sea Region stock and an Amundsen ... the movement patterns and linkages of Antarctic toothfish in the 80–120 cm size range, throughout the ...
Meeting Document : WG-SAM-14/26 : Auteur(s): S.J. Parker, S.M. Hanchet and P.L. Horn (New Zealand)
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Proposal for a CCAMLR sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea
Subarea 88.1 and for nine years in Subarea 88.2. Associated research has led to an assessment of the ... Abstract: The exploratory fishery for Dissostichus spp. has now been operating for 14 years in ... members develop a pre-recruit survey design. This paper develops a proposal for a CCAMLR sponsored ... survey, the target fish age and length classes to be monitored, appropriate survey strata size and ...
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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Fishery Report 2013: Exploratory fishery for Dissostichus spp. in Division 58.4.3a
Description / Abstract: Fishery Report 2013: Exploratory fishery for Dissostichus spp. in ... year are provided. Note: length-frequency distributions are only presented for those years/SSRUs in ... 30 November 2013). FISHERY REPORT 2013: EXPLORATORY FISHERY FOR DISSOSTICHUS SPP. IN ... year, the Commission agreed on four exploratory fisheries for Dissostichus spp. in this region outside ... Indian Ocean sector of the Convention Area remains an issue for the Commission. Estimates of illegal ...
Document : Site Section: Publications
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KRILL CONSUMPTION ESTIMATES FOR CRABEATER SEALS AT THE ANTARCTIC PENINSULA AND THE WESTERN WEDDELL SEA WITH SPECIAL REFERENCE TO SSMUS OF AREA 48.1
Antarctic Peninsula and western Weddell Sea region (90° to 30° W and 60° to 80° S), with special reference ... Abstract: We report annual Antarctic krill consumption estimates for crabeater seals in the ... bioenergetic model specifically developed for crabeater seals. Author(s): J. Forcada and P.N. Trathan (United ... Kingdom) Title: KRILL CONSUMPTION ESTIMATES FOR CRABEATER SEALS AT THE ANTARCTIC PENINSULA AND THE ...
Meeting Document : WG-EMM-09/21 : Auteur(s): J. Forcada and P.N. Trathan (United Kingdom)
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Joint research proposal for Dissostichus spp. in Subarea 88.3 by the Republic of Korea and New Zealand
proposal is for an additional 3 years covering the period 2018, 2019 and 2020. It is designed to build on ... (Parker et al. 2014). A 3-year research plan for this subarea was commenced by Korea in 2016 and new ... Abstract: Exploratory fishing for toothfish (Dissostichus spp.) in Subarea 88.3 began with a ... coordinated research proposal for presentation at WG-FSA-17 (WG-SAM-17, para 4.89). This joint research ...
Meeting Document : WG-FSA-17/40 : Auteur(s): Delegations of the Republic of Korea and New Zealand
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Refinements to the strategy for managing depleted fish stocks based on CCAMLR objectives
Paper Title: Refinements to the strategy for managing depleted fish stocks based on CCAMLR ... hence that additional management policies are required for depleted stocks. The implications of these ... studies for defining the terms 'depleted' and 'target levels for recovery' are briefly ... been put into effect the target years for recovery become fixed at 20 and 30 years after the procedure ... distribution at year 20 is the sum of the projected distributions, for the set of current stock states in the ... Bertalanffy K = 0.12 year! Von Bertalanffy Woo = 2500 grams Age at first fishing = 5 years (knife-edge) Age ... at first spawning = 5 years (knife-edge) Pooled age-class = 20 years Higher yielding stock ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 467–475 : Auteur(s): de la Mare, W.K. and A. Constable
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Fishery Report 2017: Exploratory fishery for Dissostichus mawsoni in Subarea 48.6
Description / Abstract: Fishery Report 2017: Exploratory fishery for Dissostichus mawsoni in ... year are provided. Note: length-frequency distributions are only presented for those years/SSRUs in ... fishery was an exploratory fishery for Dissostichus spp., however, in order to better align the target ... tonnes 486_4 D. mawsoni 100 tonnes 486_5 D. mawsoni 190 tonnes 4. For 2018, a total of three vessels ... , biomass estimation phase and assessment development phase, with a set of decisions and review for the ...
Document : Site Section: Publications