Journal Article

On the phenology of North Sea ichthyoplankton

Wulf Greve, Sabine Prinage, Heike Zidowitz, Jutta Nast and Frank Reiners

in ICES Journal of Marine Science

Published on behalf of ICES/CIEM

Volume 62, issue 7, pages 1216-1223
Published in print January 2005 | ISSN: 1054-3139
Published online January 2005 | e-ISSN: 1095-9289 | DOI: http://dx.doi.org/10.1016/j.icesjms.2005.03.011
On the phenology of North Sea ichthyoplankton

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The timing of fish larvae abundance was investigated at Helgoland Roads in the southern North Sea for the years 1990, 1993–1996, 1998, and 1999. From the 44 species identified, 27 were sufficiently abundant in more than 3 years and had well defined seasonal changes to calculate their phenology. The passage of the 15%, 50%, and 85% annual cumulative abundance thresholds was used to define the “start of season”, “middle of season”, and “end of season”, respectively. The timing of a significant number of these events was correlated with the mean annual winter sea surface temperatures (SSTs) in weeks 1–10 with higher temperatures leading to earlier appearance. The timing of the end of season was also negatively correlated with the SSTs. Sole (Solea solea) is presented as an example of the general functional relationship.

Keywords: climatic forcing; fish larvae; North Sea; phenology; seasonality; sole; temperature; time-series

Journal Article.  3599 words.  Illustrated.

Subjects: Environmental Science ; Marine and Estuarine Biology

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