Resultados de la búsqueda
-
Investigation of bias in the mark–recapture estimate of toothfish population size at South Georgia
Abstract: This paper investigates the influence of mixing of fish, and the uneven distribution of tag placements and recapture effort, on bias in the Petersen estimate. It does so by constructing a linear model of the South Georgia toothfish fishery, simulating fish movements within this system
Meeting Document : WG-FSA-SAM-05/6 Rev. 1 : Autor(es): D.J. Agnew, G.P. Kirkwood, J. Pearce and J. Clark (United Kingdom)
-
Implementation of the modified Petersen mark–recapture method in S-Plus
Abstract: The mark-recapture method of estimating toothfish population size described last year, which uses a modification of the Petersen estimator to take account of mortality and selectivity, is implemented here in Splus code. Author(s): A. Payne, D.J. Agnew and R. Hillary (United Kingdom)
Meeting Document : WG-FSA-SAM-05/7 : Autor(es): A. Payne, D.J. Agnew and R. Hillary (United Kingdom)
-
Stratification of catch-at-length data using tree based regression: an example using Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea
Abstract: This paper presents a new approach to the stratification of catch-at-length data of Antarctic toothfish (D. mawsoni) in the Ross Sea. Tree based regression techniques were used to stratify the sampled catch based on the median length of Antarctic toothfish for each set using the observer
Meeting Document : WG-FSA-SAM-05/8 : Autor(es): N.L. Phillips, A. Dunn and S.M. Hanchet (New Zealand)
-
Simulation experiments and CCAMLR yield estimates using CASAL
Abstract: This paper describes an approach, using CASAL, to undertake operating model/estimation model experiments for Dissostichus spp., and methods for calculating CCAMLR yields using CASAL. We present an example model for the fictitious fishery on a fictitious species Dissostichus spurious
Meeting Document : WG-FSA-SAM-05/9 : Autor(es): A. Dunn (New Zealand)
-
Descriptive analysis of the Antarctic toothfish (Dissostichus mawsoni) tagging scheme in the Ross Sea for the years 1997/98 to 2003/04
Abstract: A descriptive analysis of the toothfish tagging programme carried out in the Ross Sea since 2001 is presented for the first time. Tag-release and tag-recapture data are presented for both toothfish species for Subareas 88.1 and 88.2 for New Zealand vessels only. This is because data from
Meeting Document : WG-FSA-SAM-05/10 : Autor(es): A. Dunn, S.M. Hanchet and K. Maxwell (New Zealand)
-
Computer program for the calculation and validation of Verhoeff check digits
Abstract: Abundance estimates from tag-release and tag-recapture data require that the number and type of errors in data for analysis are minimised. Accurate recording of the sequence numbers on tags at time of release and recapture form an important part of data accuracy. Check digits, as a part
Meeting Document : WG-FSA-SAM-05/11 : Autor(es): A. Dunn (New Zealand)
-
Further development and progress towards evaluation of an Antarctic toothfish (Dissostichus mawsoni) stock model for the Ross Sea
Abstract: This report outlines the development of a Bayesian sex and age structured population model for the assessment of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and 88.2), and initial progress towards evaluation of spatially explicit models. Three model
Meeting Document : WG-FSA-SAM-05/12 : Autor(es): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)
-
Fitting a von Bertalanffy growth model to length-at-age data accounting for length-dependent fishing selectivity and length-stratified sub-sampling of length frequency samples
Abstract: Response-biased sampling in the context of regression modelling occurs when sample units are selected with a probability that is a function of the response. In sampling to obtain fish to both age and measure for length there are two potential response-biased sampling processes when
Meeting Document : WG-FSA-SAM-05/13 : Autor(es): S.G. Candy (Australia)
-
Provisional Annotated Agenda for the Twenty-third Meeting of the Commission for the Conservation of Antarctic Marine Living Resources
Title: Provisional Annotated Agenda for the Twenty-third Meeting of the Commission for the Conservation of Antarctic Marine Living Resources Approval: Approved
Meeting Document : CCAMLR-XXIII/02
-
Examination of the audited financial statements for 2003
Author(s): Executive Secretary Title: Examination of the audited financial statements for 2003 Approval: Approved
Meeting Document : CCAMLR-XXIII/03 : Autor(es): Executive Secretary