Resultados de la búsqueda
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DATA QUALITY ASSESSMENT IN CCAMLR: REQUIREMENTS FOR MINIMUM INTEGRITY TESTING TO ENSURE THAT DATA ARE FIT FOR PURPOSE
Abstract: The level of data quality assessment and ‘certification’ as ‘fit for purpose’ depends ... upon the different requirements for the data, together with a recognition that, however thorough a ... validation exercise the data are exposed to, there will always be some data that require some additional ... confirmation of their validity. In the context of CCAMLR, data may undergo one set of quality testing in order ...
Meeting Document : WG-SAM-09/05 : Autor(es): Secretariat
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IDENTIFICATION OF DATA QUALITY METRICS FOR TAGGING DATA SELECTION
Abstract: The suite of data quality metrics introduced by Middleton & Dunn (2008) is examined ... tagging data. Trips considered to have “known” good tagging data are identified, based on above-median ... bootstrap analysis indicates that the range of data quality metrics associated with known good tagging data ... is sensitive to the set of trips considered to have good data. However, a restricted set of data ...
Meeting Document : WG-SAM-09/19 : Autor(es): D.A.J. Middleton and A. Dunn (New Zealand)
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Krill CPUE standardisation and comparison with acoustic data based on data collected from Chinese fishing vessels in Subarea 48.1
Abstract: The usability of CPUE data as Antarctic krill abundance index was a widely discussed ... issue. Many studies suggested the CPUE data should be standardized before using as abundance/biomass ... index. We tried to develop general additive models to standardize the CPUE data collected from Chinese ... fishing vessels during 2009/10-2013/14 seasons. We also compared the CPUE data and acoustic data collected ...
Meeting Document : WG-EMM-17/41 : Autor(es): Y. Ying, X. Wang, J. Zhu and X. Zhao
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The reliability of VHF telemetry data for measuring attendance patterns of marine predators: a comparison with Time Depth Recorder data
Abstract: VHF radiotelemetry data has been used for over thirty years to monitor the behavior ... patterns of otariid seals. These data have been used in a wide variety of ways, from characterizing the ... attendance patterns. Yet the accuracy of VHF data has never been appropriately evaluated. Our study compares ... VHF data collected on 16 lactating Antarctic fur seals to assess onshore attendance, with concurrently ...
Meeting Document : WG-EMM-15/P05 : Autor(es): A.D. Lowther, H. Ahonen, G. Hofmeyr, W.C. Oosthuizen, P.J. Nico De Bruyn, C. Lydersen and K. Kovacs
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Potential for using CCAMLR VMS data for compliance analysis and data quality assurance
process to utilise VMS data for data-quality assurance in relation to catch data. This represents a change ... in focus on the use of VMS data by CCAMLR and requires a contingent change in emphasis on data ... confidence for compliance analysis and improving the quality of other georeferenced data. Author(s): CCAMLR ... Secretariat Title: Potential for using CCAMLR VMS data for compliance analysis and data quality assurance ...
Meeting Document : SC-CAMLR-XXXIV/BG/19 : Autor(es): CCAMLR Secretariat
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Historical data synthesis in the Southern Ocean: Priority data sets
data sets to enable investigation of long-term, large-scale ecosystem dynamics across the Southern ... Ocean. Historical data sets have a particular value in providing ‘baseline’ physical and biological data ... give an example of an historical data rescue project that is being conducted by ICED scientists at the ... integration to aid monitoring and management of Southern Ocean ecosystems. We invite data holders to supply ...
Meeting Document : WG-EMM-13/19 : Autor(es): N.M. Johnston, E.J. Murphy, J.R.D. Silk, C.M. Waluda, S.L. Hill and R.D. Cavanagh (United Kingdom) on behalf of the ICED Scientific Steering Committee
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An update on using the CCAMLRGIS R package to create polygon data and access data on the CCAMLR online GIS
Abstract: To facilitate access to spatial data for use in analyses and generating graphics (i.e ... . maps) in R the CCAMLRGIS R package has been upgraded to provide direct access to polygon data that can ... be viewed on the online GIS. This package can also be used to create polygon data that can either be ... the online GIS. In this paper we provide information on the data format requirements for generating ...
Meeting Document : WG-SAM-17/47 : Autor(es): CCAMLR Secretariat
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Using krill length data from fishery-dependent and fishery-independent data sources to measure changes in the Antarctic krill population structure in the Bransfield Strait
Abstract: Krill length data collected from fishery-dependent and fishery-independent data sources ... were analysed for trends in population structure. Krill length data collected by the Scheme of ... both data sources appeared to be tracking similar processes. CEMP data revealed patterns in population ... in population structure and recruitment. Analysis demonstrates the importance of using long-term data ...
Meeting Document : WG-EMM-2019/76 : Autor(es): CCAMLR Secretariat
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CEMP data summary and updated analysis of CEMP data from Subarea 48.
in accordance with the ‘ecosystem approach’. This report provides: Details on CEMP data that have ... previous season A summary of available CEMP data and metadata and any issues encountered with data ... submitted to the Secretariat. An update on the spatial analysis of CEMP data in subarea 48.1 using Combined ... Standardised Indices (CSIs) for Breeding Seasons parameters and population size data. Author(s): CCAMLR ...
Meeting Document : WG-EMM-17/17 : Autor(es): CCAMLR Secretariat
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Growth models for D. eleginoides for the Heard Island plateau region (Division 58.5.2) calibrated from otolith-based length at age data and validated using mark-recapture data
Abstract: Length-at-age data for the Patagonian toothfish (Dissostichus eleginoides) caught by ... sample that were older than 20 years the general trend in the data of length with age did not exhibit ... mm and asymptotic length of 2000 mm but the fit to the data was very poor. The Akaike Information ... Criterion indicated that the 2-segment linear model gave the best fit to the length-age data. We compare ...
Meeting Document : WG-FSA-05/64 Rev. 1 : Autor(es): S.G. Candy, T. Lamb, A.J. Constable and R. Williams (Australia)