• Acoustic data collected during and between bottom trawl stations: consistency and common trends 

      Bez, Nicholas; Reid, David; Neville, Suzanna; Vérin, Yves; Hjellvik, Vidar; Gerritsen, Hans D. (Journal article; Peer reviewed, 2007)
      Acoustic data are often collected during bottom trawl surveys. Their use can potentially improve the precision and accuracy of fish abundance estimates if acoustic data collected between trawl stations are consistent with ...
    • Differences between near bottom biomass spatial structure observed in the Irish Sea, the North Sea and the Barents Sea in recent years 

      Mireille, Bouleau; Nicolas, Bez; Hjellvik, Vidar; Godø, Olav Rune; Reid, David; Beare, Douglas; Greig, Tony; Armstrong, Mike; Gerritsen, Hans D.; Mackinson, Steven; Neville, Suzanna; Kooij, Jeroen van der; Vérin, Yves; Massé, Jacques (ICES CM documents, Working paper, 2003)
      Based on acoustic data and trawl catches collected during bottom trawl surveys, we compare the spatial structure of the biomass available in the first meters above the bottom in three different regions, the Barents Sea ...
    • Positive relationships between bottom trawl and acoustic data 

      Beare, Douglas; Reid, David; Greig, Tony; Bez, Nicholas; Hjellvik, Vidar; Godø, Olav Rune; Bouleau, Mireille; Kooij, Jeroen van der; Neville, Suzanna; Mackinson, Steven (ICES CM documents, Working paper, 2004)
      Demersal fish stock biomass is usually estimated using commercial landings data, ‘tuned’ by various types of survey data, usually trawl. When collecting fish data by trawl it is only possible to take relatively small numbers ...
    • Using artificial neural networks to combine acoustic and trawl data in the Barents and North Seas 

      Neville, Suzanna; Hjellvik, Vidar; Mackinson, Steven; Kooij, Jeroen van der (ICES CM documents, Working paper, 2004)
      Groundfish have a wide and variable distribution making the use of trawling alone a highly inadequate sampling method. Trawl data provide species identification and numbers over a very small area and habitat type while ...