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  Importance of genetic diversity in eelgrass Zostera marina for its resilience to global warming

Ehlers, A., Worm, B., & Reusch, T. B. H. (2008). Importance of genetic diversity in eelgrass Zostera marina for its resilience to global warming. Marine Ecology Progress Series, 355, 1-7. doi:10.3354/meps07369.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D6DF-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D6E0-5
Genre: Journal Article

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Ehlers, A., et al., 2008, S-38772.pdf (Publisher version), 380KB
 
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 Creators:
Ehlers, Anneli1, Author              
Worm, Boris, Author
Reusch, Thorsten B. H.1, 2, Author              
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              
2Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

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Free keywords: climate change; ocean warming; coastal ecosystem; genotypic diversity; intraspecific variation; resilience; zostera marina
 Abstract: Effects of global warming on marine ecosystems are far less understood than they are in terrestrial environments. Macrophyte-based coastal ecosystems are particularly vulnerable to global warming, because they often lack species redundancy. We tested whether summer heat waves have negative effects on an ecologically important ecosystem engineer, the eelgrass Zostera marina L., and whether high genotypic diversity may provide resilience in the face of climatic extremes. In a mesocosm experiment, we manipulated genotypic diversity of eelgrass patches fully crossed with water temperature (control vs. temperature stress) over 5 mo. We found a strong negative effect of warming and a positive effect of genotypic diversity on shoot densities of eelgrass. These results suggest that eelgrass meadows and associated ecosystem services will be negatively affected by predicted increases in summer temperature extremes. Genotypic diversity may provide critical response diversity for maintaining seagrass ecosystem functioning, and for adaptation to environmental change.

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Language(s): eng - English
 Dates: 2008-02-26
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 361819
DOI: 10.3354/meps07369
Other: 2607/S 38772
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Title: Marine Ecology Progress Series
  Alternative Title : Mar Ecol Prog Ser
Source Genre: Journal
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Pages: - Volume / Issue: 355 Sequence Number: - Start / End Page: 1 - 7 Identifier: ISSN: 0171-8630