Zooplankton response to a warmer northern Wadden Sea

Martens, P and van Beusekom, JEE 2008 Zooplankton response to a warmer northern Wadden Sea. Helgoland Marine Research, 62 (1). 67-75.

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Weekly measurements of mesozooplankton (>76 mu m) and hydrographic parameters have been carried out since 1984 in the List Tidal Basin (northern Wadden Sea). Monthly water temperature significantly increased by 0.04 degrees C year. The largest increase by 3 degrees C in 22 years occurred in September, implying, an extension of the warm summer period. Mean annual copepod abundance and length of copepod season correlated significantly with mean temperature from January to May. Except for an increasing Acartia sp. abundance during spring (April-May), no longterm trends in copepod abundance were observed. The percentage of carnivorous zooplankton increased significantly since 1984 mainly due to a sudden increase in the cyclopoid copepod Oithona similis in 1997. We expect that global warming will lead to a longer copepod season and higher copepod abundances in the northern Wadden Sea.

Item Type: Publication - Article
Divisions: Sir Alister Hardy Foundation for Ocean Science
Depositing User: Miss Gemma Brice
Date made live: 26 Mar 2014 14:09
Last Modified: 06 Jun 2017 16:11
URI: https://plymsea.ac.uk/id/eprint/5838

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