Résultats de la recherche
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Conditions for the precise measurement of fish target strength in situ
studied and two indexes are introduced for this purpose. One is the number of fish in the effective ... Abstract: Conditions for precise measurement of in situ fish target strength (TS) are empirically ... (s): K. Sawada and M. Furusawa (Japan), N.J. Williamson (USA) Title: Conditions for the precise ... calibration between Japanese and U.S. vessels on 15 and 16 August 1991. Published in J.Mar.Acoust.Soc. Author ...
Meeting Document : WG-Krill-94/35 : Auteur(s): K. Sawada and M. Furusawa (Japan), N.J. Williamson (USA)
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Temporal scales of foraging in a marine predator: implications for interpreting the distribution of prey
the surface, the time taken for a fur seal to locate a new patch after leaving an old one is an ... showed that fur seals foraged at two spatial distributions: (1) a fine-scale (median distance 0.18- 0.27 ... prey patches at the meso-scale level. Only in one year of the study (1990/91) were there indications ... reduction in the number of prey patches available in that year but that prey patches were of poorer quality ...
Meeting Document : WG-EMM-95/23 : Auteur(s): Boyd, I.L.
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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
brought forward to the 16th April and that a further two trial extensions (each of 5 days) be allowed ... extension in the Patagonian toothfish fishery in Subarea 48.3 and proposal for further season extension ... further conditional extensions, such that the season could start on the 16th April in 2012 and April 11th ...
Meeting Document : WG-FSA-13/32 : Auteur(s): M.A. Collins and K. Ross (United Kingdom)
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Research plan for toothfish in Divisions 58.4.4a and b by Shinsei Maru No. 3 in 2011/12
2010/11 fishing season with the aims of providing the data required for assessments of the population ... . eleginoides, of which two fish were tagged and released in SSRU C during the 2007/08 and 2009/10 preliminary ... northeast of SSRU B instead of an unconducted haul in the 2010/11. To apply mark-and recapture studies ... size for the 2011/12, as in the 2010/11, taking into account the need for completion of the survey ...
Meeting Document : WG-SAM-11/07 : Auteur(s): Delegation of Japan
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RESEARCH PLAN FOR TOOTHFISH IN DIVISION 58.4.4a & b BY SHINSEI MARU NO. 3 IN 2009/10
employed for 93 research hauls (three quarters of the total) in order to make an evaluation of the stock ... Division 58.4.4 a & b, a total of 124 research hauls are allocated on 10-minute latitude x 20-minute ... the need for completion of the proposed survey (124 research hauls) and impacts on the stock ... consistency of the data from the two serial survey seasons, 2008/09 and 2009/10, and lead the efficient ...
Meeting Document : WG-SAM-09/11 : Auteur(s): Delegation of Japan
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Revised research plan for toothfish in Divisions 58.4.4a and 58.4.4b by the Shinsei Maru No. 3 in 2010/11
the 2010/11 survey, taking into account the need for completion of the survey and impact on the fish ... . In Division 58.4.4 a & b, we proposed the research plan for toothfish in the Division by Shinsei ... research plan to be concentrated in the two centered SSRUs, B and C. These centered SSRUs were selected due ... to increasing possibility of recapture for tagged fishes released throughout the four SSRUs in 2007 ...
Meeting Document : WG-FSA-10/49 : Auteur(s): Delegation of Japan
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Estimates of sustainable yield for 50 data-poor stocks in the Pacific coast groundfish fishery management plan
. We present estimates of sustainable yield for 50 of these stocks using two recently developed models ... of sustainable yield for many these species were previously based on undocumented, ad-hoc analyses ... requires Regional Fishery Management Councils to set annual catch limits for all stocks or stock complexes ... of historical catch for west-coast groundfish species and species-specific information related to ...
Meeting Document : WG-SAM-11/P1 : Auteur(s): E.J. Dick and A.D. McCall
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Global MPAs and marine reserves: lessons learned and implications for CCAMLR
years), large (>100km 2) and isolated by deep water or sand” (Edgar et al. 2014). Two analyses of New ... achieve better conservation outcomes for marine areas. As these areas grow in number, it is important to ... . One major study published this year identified five characteristics of MPAs that achieved ... Zealand’s system of marine reserves, which has now been in place for several decades, indicate unexpected ...
Meeting Document : CCAMLR-XXXIII/BG/20 : Auteur(s): Submitted by ASOC
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Lead-radium dating provides a framework for coordinating age estimation of Patagonian toothfish (Dissostichus eleginoides) between fishing areas
. 3.3 years was observed across estimated ages younger than 20 years. For the CAF, ages were ... fishing areas monitored by two facilities, Center for Quantitative Fisheries Ecology (CQFE) and the ... estimates range from approximately 20 to more than 50 years. In this study, lead-radium dating provided ... zones in transverse otolith sections, and longevity estimates exceeding 30 years. Lead-radium dating ...
Meeting Document : WG-FSA-11/P01 : Auteur(s): A.H. Andrews, J.R. Ashford, C.M. Brooks, K. Krusic-Golub, G. Duhamel, M. Belchier, C.C. Lundstrom and G.M. Cailliet
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Variation in echosounder calibration with temperature and some possible implications for acoustic surveys of krill biomass
appropriate adjustments for differences in sound speed between locations have been made. Here we present ... transducer gains were detected at both 38 and 120 kHz between calibrations conducted at the two locations. At ... in turn to an under-estimation of krill biomass by 52.5 %. Every effort should therefore be made to ... are to be conducted. In addition, the implications of temperature variation across a survey area for ...
Meeting Document : WG-EMM-97/52 : Auteur(s): Watkins, J.L., Woodroffe, P., Brierley, A.S., Goss, C.