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Mycorrhizal fungal abundance is affected by long-term climatic manipulations in the field

Staddon, P L, Thompson, K, Jakobsen, I, Grime, J P, Askew, A P and Fitter, A H (2003) Mycorrhizal fungal abundance is affected by long-term climatic manipulations in the field. Global Change Biology. pp. 186-194. ISSN 1354-1013

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Abstract

Climate change treatments - winter warming, summer drought and increased summer precipitation - have been imposed on an upland grassland continuously for 7 years. The vegetation was surveyed yearly. In the seventh year, soil samples were collected on four occasions through the growing season in order to assess mycorrhizal fungal abundance. Mycorrhizal fungal colonisation of roots and extraradical mycorrhizal hyphal (EMH) density in the soil were both affected by the climatic manipulations, especially by summer drought. Both winter warming and summer drought increased the proportion of root length colonised (RLC) and decreased the density of external mycorrhizal hyphal. Much of the response of mycorrhizal fungi to climate change could be attributed to climate-induced changes in the vegetation, especially plant species relative abundance. However, it is possible that some of the mycorrhizal response to the climatic manipulations was direct - for example, the response of the EMH density to the drought treatment. Future work should address the likely change in mycorrhizal functioning under warmer and drier conditions.

Item Type: Article
Copyright, Publisher and Additional Information: © 2003 Blackwell Publishing Ltd. This is an electronic version of an article published in Global Change Biology: complete citation information for the final version of the paper, as published in the print edition of Global Change Biology, is available on the Blackwell Synergy online delivery service, accessible via the journal's website at www.blackwellpublishing.com/journal.asp?ref=1354-1013 or www.blackwell-synergy.com
Keywords: arbuscular mycorrhizas, climate change, drought, global environmental change, warming, ARBUSCULAR MYCORRHIZAS, PLANTAGO-LANCEOLATA, HYPHAL PRODUCTION, TRIFOLIUM-REPENS, ATMOSPHERIC CO2, ROOT PRODUCTION, GLOMUS-MOSSEAE, ELEVATED CO2, COLONIZATION, SOIL
Institution: The University of York
Academic Units: The University of York > Biology (York)
Depositing User: Repository Officer
Date Deposited: 25 May 2005
Last Modified: 14 Oct 2014 22:26
Published Version: http://dx.doi.org/10.1046/j.1365-2486.2003.00593.x
Status: Published
Refereed: Yes
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/492

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