posted on 2024-03-22, 10:49authored byVerena M. Trenkel, Olav Rune Godø, Nils Olav Handegard, Ruben Patel
No abstracts are to be cited without prior reference to the author.
We propose an approach for studying the relationship between spatial fish distributions and the distribution of numbers in trawl catches. Individual spatial fish distributions are derived from acoustics data collected with a drifting buoy by tracking individual fish. The spatial distribution of these individual fish is then characterised using Generalised Additive Models (GAM). The catch distribution is obtained empirically. A model relating the spatial fish distribution and the catch distribution is then developped. This paper concentrates on the first part of the approach, the identification of the spatial fish distribution from acoustic data, which is illustrated for a demersal example from the Barents sea including mainly cod (Gadus morhua) and haddock (Melanogrammus aeglefinus).
History
Symposia
2004 ICES Annual Science Conference, Vigo, Spain
Session
Theme Session R on the New Developments in Fisheries Acoustics: Applications in Bottom Trawl Surveys and Multi-frequency Species Identification
Abstract reference
R:26
Recommended citation
[Authors]. 2004. Studying the relationship between spatial fish distributions and trawl catches. 2004 ICES Annual Science Conference, Vigo, Spain. CM 2004/R:26. https://doi.org/10.17895/ices.pub.25349779