Climate change and the phytoplankton spring bloom: warming and overwintering zooplankton have similar effects on phytoplankton

Sommer, Ulrich and Lewandowska, Aleksandra M. (2011) Climate change and the phytoplankton spring bloom: warming and overwintering zooplankton have similar effects on phytoplankton Global Change Biology, 17 (1). pp. 154-162. DOI 10.1111/j.1365-2486.2010.02182.x.

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Abstract

Indoor mesocosms were used to study the combined effect of warming and of different densities of overwintering
mesozooplankton (mainly copepods) on the spring development of phytoplankton in shallow, coastal waters. Similar
to previous studies, warming accelerated the spring phytoplankton peak by ca. 1 day 1C1 whereas zooplankton did not significantly influence timing. Phytoplankton biomass during the experimental period decreased with warming and with higher densities of overwintering zooplankton. Similarly, average cell size and average effective particle size (here: colony size) decreased both with zooplankton density and warming. A decrease in phytoplankton particle size is generally considered at typical footprint of copepod grazing. We conclude that warming induced changes in the magnitude and structure of the phytoplankton spring bloom cannot be understood without considering grazing by overwintering zooplankton.

Document Type: Article
Keywords: Microbiology; Climatology; climate change, mesocosms, phytoplankton, spring bloom, zooplankton
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-N Experimental Ecology - Food Webs
OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
DOI etc.: 10.1111/j.1365-2486.2010.02182.x
ISSN: 1354-1013
Projects: Future Ocean
Date Deposited: 15 Sep 2010 12:45
Last Modified: 13 Dec 2013 11:30
URI: http://eprints.uni-kiel.de/id/eprint/8914

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