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标题：Zooplankton response to a warmer northern Wadden Sea
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作者：Peter Martens ; Justus E. E. van Beusekom
期刊名称：Helgoland Marine Research
印刷版ISSN：1438-3888
出版年度：2008
卷号：62
期号：1
页码：67-75
DOI：10.1007/s10152-007-0097-0
出版社：BioMed Central
摘要：Weekly measurements of mesozooplankton (>76 μm) 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°C year−1. The largest increase by 3°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 long-term 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.
关键词：Zooplankton;Copepods;Temperature;Oithona;Wadden Sea;Long-term change