Marine diversity shift linked to interactions among grazers, nutrients and propagule banks.

Worm, Boris, Lotze, Heike, Boström, C., Engkvist, R., Labanauskas, V. and Sommer, Ulrich (1999) Marine diversity shift linked to interactions among grazers, nutrients and propagule banks. Open Access Marine Ecology Progress Series, 185 . pp. 309-314. DOI 10.3354/meps185309.

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Abstract

Diverse coastal seaweed communities dominated by perennial fucoids become replaced by species-poor turfs of annual algae throughout the Baltic Sea. A large-scale field survey and factorial field experiments indicated that grazers maintain the fucoid community through selective consumption of annual algae. Interactive effects between grazers and dormant propagules of annual algae, stored in a 'marine seed bank', determine the response of this system to anthropogenic nutrient loading. Nutrients override grazer control and accelerate the loss of algal diversity in the presence but not in the absence of a propagule bank. This implies a novel role of propagule banks for community regulation and ecosystem response to marine eutrophication.

Document Type: Article
Keywords: Food Webs; Coastal ecosystems; Eutrophication; Baltic Sea; Macroalgae; Diversity; Community structure; Dormancy; Herbivory; Fucus vesiculosus
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-N Experimental Ecology - Food Webs
OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-B Experimental Ecology - Benthic Ecology
OceanRep > Institute for Marine Science Kiel
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.3354/meps185309
ISSN: 0171-8630
Date Deposited: 27 Mar 2012 07:52
Last Modified: 08 May 2018 09:05
URI: http://oceanrep.geomar.de/id/eprint/14110

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