Résultats de la recherche
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Review of the use of survey data and length-at-age models in the assessment of Dissostichus eleginoides in the vicinity of Heard Island and McDonald Islands (Division 58.5.2)
Abstract: This paper reviews the allocation of historical survey data to the new strata and the ... implications of this review to estimating the abundance of juvenile fish using CMIX. In addition, the paper ... could affect the estimates of juvenile abundance. Model estimates were best incorporating the ... reassignment of hauls and the latest estimates of length at age, but quality of model fit and estimates of ...
Meeting Document : WG-FSA-06/44 Rev. 1 : Auteur(s): D.C. Welsford, A.J. Constable and G.B. Nowara (Australia)
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Review of the use of survey data and length-at-age models in the assessment of Dissostichus eleginoides in the vicinity of Heard Island and McDonald Islands (Division 58.5.2)
Abstract: This paper reviews the data used to estimate the abundance of juvenile Dissostichus ... eleginoides in Division 58.5.2 and examines the sensitivity of the assessment of yield to these results ... . Primarily, it is proposed to revise the use of historical survey data by reassigning them to the strata ... established in 2003. In addition, the sensitivity of the estimates of abundance to the latest length-at-age ...
Meeting Document : WG-FSA-SAM-06/15 : Auteur(s): D.C. Welsford, A.J. Constable and G.B. Nowara (Australia)
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The error of the biomass estimate as a function of survey parameters and the statistics of a density field of krill aggregations
Abstract: Simple relationships expressing dependence of sampling relative error in biomass ... estimate (by means of a survey) on statistical characteristics of fish concentration density field under ... examination and on parameters of survey itself, have been derived with the help of mathematical statistics and ... methods of calculus of probabilities; biomass estimate is determined as a product of average density for ...
Meeting Document : SC-CAMLR-VI/BG/39 : Auteur(s): Z.I. Kizner (USSR)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2016 – Part A: General context of the establishment of MPAs and background information on the Weddell Sea MPA planning area-
Abstract: The Delegation of Germany presents to the Scientific Committee the scientific ... background in support of the development of a marine protected area (MPA) in the Weddell Sea planning area ... separate documents (Part A-C). SC-CAMLR-XXXV/BG/11 (Part A) sets out the general context of the ... establishment of CCAMLR-MPAs and provides the background information on the Weddell Sea MPA (WSMPA) planning ...
Meeting Document : SC-CAMLR-XXXV/BG/11 : Auteur(s): Delegation of Germany
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
Abstract: The results of Butterworth et al. (1992) relating potential krill yield to a pre ... -exploitation survey estimate of kril1 biomass are extended to incorporate most of the amendments specified by ... the Third and Fourth Meetings of Working Group on Krill. The most important of these extensions is ... integration over the ranges of uncertainty for a number of the model parameters. Results are provided for the ...
Meeting Document : WG-KRILL-93/42 : Auteur(s): D.S. Butterworth, G.R. Gluckman, R.B. Thomson and S. Chalis (South Africa)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) - Version 2015 - Part A: General context of the establishment of MPAs and background information on the Weddell Sea MPA planning area-
EMM) the background document that provides the scientific basis for the evaluation of a marine ... protected area (MPA) in the Weddell Sea planning area. The contents and structure of the whole document ... reflect its main objectives, i.e. to set out the general context of the establishment of MPAs and to ... data retrieval process (Part B) and to describe the results of the scientific analyses and the MPA ...
Meeting Document : WG-EMM-15/38 Rev.1 : Auteur(s): K. Teschke (Germany) on behalf of the Weddell Sea MPA (WSMPA) project team
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Hydroacoustic observations of the vertical distribution of icefish Champsocephalus gunnari in the western part of the slope of the South Georgia Island in December 1999–January 2000
Abstract: The dynamics of daily vertical migrations of icefish Champsocephalus gunnari was ... studied and some quantitative estimates were obtained by results of analysis of more than 150 fragments of ... echograms obtained with the use of an echograph of the "Priboi-101" echo sounder during the ... concentrations of icefish can be considered by the type of the vertical distribution as bottom/pelagic ones, and ...
Meeting Document : WG-FSA-00/19 : Auteur(s): V.L. Senioukov (Russia)
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
Abstract: The results of Butterworth et al. (1991) relating potential krill yield to a pre ... -exploitation survey estimate of krill biomass are extended as specified by the Third Meeting of Working Group ... on Krill. The most important of these extensions is integration over the ranges of uncertainty for a ... number of the model parameters. Results are provided for the probability of spawning biomass falling ...
Meeting Document : WG-KRILL-92/04 : Auteur(s): D.S. Butterworth, G.R. Gluckman and S. Chalis (South Africa)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2015 - Part A: General context of the establishment of MPAs and background information on the Weddell Sea MPA planning area
justification for the development of a marine protected area (MPA) in the Weddell Sea planning area. In ... documents (Part A-C). SC-CAMLR-XXXIV/BG/15 (Part A) sets out the general context of the establishment of ... the means and the results of the scientific analyses and the development of objectives and priority ... areas for a Weddell Sea MPA. Here, the delegation of Germany intends to update the Scientific Committee ...
Meeting Document : SC-CAMLR-XXXIV/BG/15 : Auteur(s): Delegation of Germany
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Integrating CPUE with the GY model: examination of the effects of shortening the CPUE series and incorporating elements of uncertainty into the D. eleginoides assessment of Subarea 48.3
2003, paragraph 2.27). This paper explores some of the consequences of shortening the dataset in the ... application of the usual assessment method. In addition we investigate the incorporation of uncertainty in the ... standardised CPUE series into the method of Kirkwood and Constable (2000) via Monte Carlo simulations of the ... CPUE series. Truncation of the standardised series from WG-FSA 2002 results in only slight modification ...
Meeting Document : WG-FSA-03/96 : Auteur(s): I.R. Ball, S. Candy and A.J. Constable (Australia)