Résultats de la recherche
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Development of an underwater setting method for surface longliners, to minimise the accidental capture of seabirds
Abstract: In response to the Department of Conservation's concerns for the accidental ... placement devices were evaluated. Two methods being selected for further in depth evaluation. The first ... concept being a towed paravane with an endless cable employed to transport and release the bait at the ... depth to which the paravane was set. Although practical bait carrying devices were designed, the ability ...
Meeting Document : WG-FSA-97/54 : Auteur(s): Bentley, N., Smith, M.
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By-catch of juvenile Antarctic fish from krill (Euphausia superba Dana) fisheries in the South Georgia area, in 1992
krill fishing by the BAT GrigOly Kovtun in the region of the South Georgia Islands during the period May ... -June 1992. Two species were predominant in the by-catches: Champsocephalus gunnari and Nototheniops ... larseni. The frequency of occurrence of juvenile fish was 18.2% when considering all krill tows and 45.5 ... krill, ranged from 700 to 18 900 individuals. In the case of C.gunnari, average values were 966±225 ind ...
Meeting Document : WG-FSA-93/8 Rev. 1 : Auteur(s): E.A. Pakhomov and S.A. Pankratov (Ukraine)
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Development of the VME registry
Abstract: The Secretariat has proposed a work plan and budget for the development of a VME ... rectangles, including locations and taxonomic composition, is intended to be posted on the public section of ... the CCAMLR website. The registry will be based on the database structure and routines established for ... the interim VME registry, for which much of the database work has been completed. The development of ...
Meeting Document : WG-FSA-10/07 : Auteur(s): Secretariat
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Influence of the quality and quantity of data from a multi-year tagging program on bias and precision of biomass estimates from an integrated stock assessment – update
Abstract: By way of simulation, this study investigated how the bias and precision of biomass ... program, in particular the effects of the size (tag size-overlap) and numbers of tagged fish, the duration ... of the tagging program, the type of auxiliary data used in the assessment, and the catch history ... emerged within this overall trend. The results show that in the early stages of the tagging program, a ...
Meeting Document : WG-FSA-12/18 : Auteur(s): P.E. Ziegler (Australia)
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Indexing maturation of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region
Abstract: The longline fisheries for Antarctic toothfish (Dissostichus mawsoni) in subareas 88.1 ... and 88.2 have provided more than a decade of observations to aid in understanding the life history and ... ecology of toothfish. Updated spawning ogives for males and females support the currently used values ... fish developing to spawn in the upcoming season. Evidence is accumulating that almost all Antarctic ...
Meeting Document : WG-FSA-12/40 : Auteur(s): S. Parker and P. Marriott (New Zealand)
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Antarctic Ocean Legacy: protection for the East Antarctic coastal region
Abstract: One of the 19 regions identified by the Antarctic Ocean Alliance (AOA) in October 2011 ... for the designation of marine protection is the coastal region of East Antarctica. The following ... Background Paper summarises the Report, Antarctic Ocean Legacy: Protection for the East Antarctic Coastal ... Region, which outlines the AOA’s vision for marine protection in the East Antarctic. Appendix 1 contains ...
Meeting Document : CCAMLR-XXXI/BG/10 : Auteur(s): Submitted by ASOC (Printed copies of the brochure will be available at the meeting)
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Establishing time-limited Special Areas for Scientific Study in newly exposed marine areas following ice shelf retreat or collapse in Subarea 48.1, Subarea 48.5 and Subarea 88.3 – Clarifications and options to further develop the 2015 proposal
Abstract: In 2015 the European Union proposed a draft Conservation Measure (CM) with the aim of ... collapse around the Antarctic Peninsula (CCAMLR-XXXIV/21). The proposed CM would establish Special Areas ... recommendation by the Antarctic Treaty Meeting of Experts on Climate Change in 2010. The scientific basis of the ... proposal received broad support from the Scientific Committee in 2015 (SC-CAMLR-XXXIV, paragraphs 8.14 to ...
Meeting Document : WG-EMM-16/27 : Auteur(s): S. Grant and P. Trathan
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An integrated stock assessment for the Heard Island and McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery in Division 58.5.2
Abstract: This paper presents an updated assessment for the Patagonian toothfish (Dissostichus ... eleginoides) fishery at Heard Island and McDonald Islands in CCAMLR Division 58.5.2 with data until end of the ... season 2015/16. The updated assessment model is based on the best available estimates of model parameters ... , the use of abundance estimates from a random stratified trawl survey (RSTS), longline tag-release data ...
Meeting Document : WG-FSA-17/19 : Auteur(s): P. Ziegler
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Theoretical considerations for estimating the density of cohorts and mean recruitment of Patagonian toothfish (Dissostichus eleginoides) based on research trawl survey data
Abstract: The current method used by the Working Group on Fish Stock Assessment (WG-FSA) for ... assessing the long-term yield for toothfish fisheries in CCAMLR uses estimates of density of juvenile ... toothfish derived from research trawl surveys as an estimate of absolute abundance of recruitment to the ... fishery. At the 2003 meeting of WG-FSA a number of inconsistencies were identified in the estimation of ...
Meeting Document : WG-FSA-04/92 : Auteur(s): C.R. Davies, E.M. van Wijk and A.J. Constable (Australia)
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Some components of uncertainty in the CCAMLR 2000 acoustical survey of krill
Abstract: Quickly studied and quantified were sources of uncertainty in the CCAMLR 2000 ... acoustical estimate of krill abundance in FAO statistical area 48. The variance in system calibration was ... evaluated in relation to the effects of variant water temperature and salinity on sound speed, sound ... and orientations. The uncertainty in species delineation was also investigated through the same ...
Meeting Document : WG-EMM-00/49 : Auteur(s): D.A. Demer (USA)