Resultados de la búsqueda
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Maximum entropy reconstruction of stock distribution and inference of stock density from line-transect acoustic survey data
distribution from acoustic line-transect data. MaxEnt is founded on the bedrock of probability theory and ... allows the most efficient possible use of known data in the inference process. The method takes explicit ... account of spatial correlation in the observed data and seeks to reconstruct a distribution of density ... across the whole survey area that is both consistent with the observed data and for which the entropy is ...
Meeting Document : WG-EMM-02/35 : Autor(es): A.S. Brierley, S.F. Gull and M.H. Wafy (United Kingdom)
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EXPLORATORY ASSESSMENT METHODS FOR EXPLORATORY FISHERIES: AN EXAMPLE CASE USING CATCH, IUU CATCH AND TAGGING DATA FOR DIVISION 58.4.3A
exploratory fisheries and by-catch species, where catch data and mark-recapture data are present but more ... detailed data, specifically age or length structured data on catches or surveys, is either missing or ... poorly sampled. As an example case we use the catch data, legal and IUU, and the mark-recapture data in ... ASSESSMENT METHODS FOR EXPLORATORY FISHERIES: AN EXAMPLE CASE USING CATCH, IUU CATCH AND TAGGING DATA FOR ...
Meeting Document : WG-SAM-08/05 : Autor(es): R.M Hillary (UK)
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Data requirements for research fishing
Abstract: There are currently two sets of requirements for reporting data from vessels conducting ... Measure 24-01 (scientific research) requires that catch, effort and biological data be reported on a haul ... -by-haul basis using the format used by research vessels (data form C4); and (2) research fishing ... under CM 41-01 (exploratory fisheries) requires that catch, effort and biological data be reported on a ...
Meeting Document : WG-SAM-12/07 : Autor(es): Secretariat
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Calculation of indices of sea-ice concentration using digital images from the National Snow and Ice Data Centre
Abstract: A method is described for calculating indices of sea ice distribution from digital data ... distributed by the National Snow and Ice Data Centre, Colorado, USA. Data consist of an image of the Antarctic ... , made up of 312x332 pixels, each having a dimension of 25x25km, for every day in the year. Primary data ... from these primary data. The techniques used are validated against alternative known data. Author(s ...
Meeting Document : WG-EMM-95/11 : Autor(es): Agnew, D.J.
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Automated data processing using Echoview
Abstract: Increasing volumes of acoustic data are being collected which necessitates a ... reappraisal of many of the current methods for data processing and analysis. For some acoustic data sets ... manual processing is no longer an option; the large size of the data set is preventing analysis. This ... document provides an overview of an automated procedure for processing acoustic data that is illustrated ...
Meeting Document : SG-ASAM-15/01 : Autor(es): M.J. Cox (Australia), G. Skaret (Norway), L.-M.K. Harrison and R. Harcourt (Australia)
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Acoustic data collection by the krill fishing industry to improve the monitoring of krill abundance
fishing vessel data collection program and provide advice on the timing and frequency for conducting ... acoustic transects; the methods for the data transmission to the Secretariat including the use of ... EchoExplore to provide a meta-data catalogue of the data and whether to have acoustic data transferred to the ... Secretariat as complete (raw) acoustic data files for processing and/or analysis products (e.g. from the ...
Meeting Document : SG-ASAM-2019/01 : Autor(es): K. Reid and J. Arata
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Preliminary assessment models of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2005/06 season
), by including tag-recapture data for 2005–06 from New Zealand vessels. The updated assessment resulted ... model. The inclusion of the 2005 release and the 2006 recapture data had the effect of only slightly ... modifying the estimates from the models, suggesting that the new data had a similar pattern to that of ... previous years. Model sensitivities using tag-recapture data from all vessels, revised biological ...
Meeting Document : WG-FSA-SAM-06/11 : Autor(es): Dunn, A. & Hanchet, S.M.
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Developing a Ross Sea region medium-term data collection plan
Abstract: Data are collected for use in scientific research, the results of which are used to ... inform management decisions made to achieve specific goals. Any data collection plan should be drawn from ... of a specific data collection and research plan for the Subarea 88.1 and 88.2 fisheries (SC ... Ross Sea region fisheries medium term data collection plan. This paper provides context with a brief ...
Meeting Document : WG-FSA-10/32 : Autor(es): S. Mormede and S. Hanchet (New Zealand)
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Assessing the accuracy of penguin breeding abundance estimates at regional scales in Antarctica from existing count data: a review using Adélie penguins as a case study
Abstract: There is a large body of existing count data in the literature for penguins at their ... breeding sites in Antarctica and the sub-Antarctic islands. These data have been summarised into several ... attempt to determine how the accuracy of regional scale abundance estimates derived from these data might ... existing data is developed and the assumptions underlying that estimator outlined. Existing data for Adelie ...
Meeting Document : WG-EMM-04/55 : Autor(es): C. Southwell (Australia)
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Background for evaluation of the suitability of the software suite Large Scale Survey System (LSSS) for inspection and processing of acoustic data from krill fishing vessels
Abstract: The coordinated collection of acoustic data from the krill fishing fleet will ... potentially lead to large amounts of stored raw data of variable quality, which need to be scrutinised and ... Scale Software System (LSSS), which is designed for handling large amounts of acoustic data. Through ... example data from the krill fishing vessel ’Juvel’ it is here demonstrated that LSSS has flexible and ...
Meeting Document : SG-ASAM-14/02 Rev. 1 : Autor(es): G. Skaret and R.J. Korneliussen (Norway)