Common trends in two populations of the European lobster, Homarus gammarus, in Scottish waters ...

• Main Authors: Lizárraga-Cubedo, H.A., Tuck, I., Bailey, N., Pierce, G.J., Zuur, A.F.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: ASC 2005 - O - Theme session 2024
• Subjects: Fisheries and aquaculture; Ecosystem observation, processes and dynamics; Pressures, impacts, conservation, and management; European lobster; Homarus gammarus
• Online Access: https://dx.doi.org/10.17895/ices.pub.25350307.v1; https://ices-library.figshare.com/articles/conference_contribution/Common_trends_in_two_populations_of_the_European_lobster_Homarus_gammarus_in_Scottish_waters/25350307/1

No abstracts are to be cited without prior reference to the author.Dynamic factor analysis (DFA), a multivariate time series analysis technique recently applied to fisheries data for the first time, is used to explore common trends, and the effects of sea surface temperature (SST) and wind speed (WS) on short nonstationary multivariate time series of catch rates of the European lobster in Scottish fisheries. Catch rates of undersized and legal lobsters at three locations in the Hebrides and two locations in the Southeast of Scotland, were generally highest in autumn (August-October) with strong seasonal trends during the period 1990-1997, and therefore, de-seasonalised time series were analysed. From the DFA analysis, significant relationships between catch rates (undersized lobsters in one location and legal lobsters in two locations) and SST were observed for the Hebrides. At all locations in the Southeast, catch rates (both undersized and legal size lobsters) were related to SST. The results suggest, by ...