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Journal Article

Grazer diversity effects in an eelgrass-epiphyte-microphytobenthos system

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons61191

Aberle,  Nicole
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons56610

Brendelberger,  Heinz
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons57003

Wiltshire,  Karen H.
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons56942

Sommer,  Ulrich
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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Citation

Jaschinski, S., Gohse-Reimann, S., Aberle, N., Brendelberger, H., Wiltshire, K. H., & Sommer, U. (2009). Grazer diversity effects in an eelgrass-epiphyte-microphytobenthos system. Oecologia, 159(3), 607-615. doi:10.1007/s00442-008-1236-2.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-D5E8-E
Abstract
The dramatic loss of biodiversity and its consequences for ecosystem processes have been of considerable interest in recent ecological studies. However, the complex and interacting processes influencing diversity effects in multitrophic systems are still poorly understood. We used an experimental eelgrass system to study the effects of changing richness of three consumer species on the biomass, diversity and taxonomic composition of both epiphytic and benthic microalgal assemblages. After 1 week, consumer richness enhanced the grazing impact on epiphyte biomass relative to single consumer treatments and a positive effect of consumer richness on prey diversity was found. Moreover, strong effects of consumer species identity on taxonomic composition were found in both microalgal assemblages. However, the effects of consumer richness were not consistent over time. The consequences of high nutrient availability seemed to have masked consumer richness effects.