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Effects of increased N availability on biodiversity of Mediterranean-type ecosystems: a case study in a Natura 2000 site in Portugal.

Dias, T.; Malveiro, S.; Chaves, S.; Tenreiro, R.; Branquinho, C.; Martins-Loução, M.A.; Sheppard, L.J.; Cruz, C.. 2011 Effects of increased N availability on biodiversity of Mediterranean-type ecosystems: a case study in a Natura 2000 site in Portugal. In: Hicks, W.K.; Whitfield, C.P.; Bealey, W.J.; Sutton, M.A., (eds.) Nitrogen deposition and Natura 2000: Science and practice in determining environmental impacts. COST Office - European Cooperation in Science and Technology, 173-181.

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Abstract/Summary

• Although Mediterranean-type ecosystems are biodiversity hotspots, very little is known about the effects of increased N availability in these systems; • This paper describes an integrated field study on the effects of increased N availability in a Mediterranean-type ecosystem in a Natura 2000 site in Portugal; • The ecosystem was highly N responsive: visible changes were seen within one year; N additions created new and distinct seasonal patterns of soil N availability; plant and soil bacterial diversity together with plant cover were increased; • The effects of increased N availability appeared to depend on N form - plant evenness; N dose - plant species richness; and on both N form and dose - species cover and soil bacterial richness.

Item Type: Publication - Book Section
Programmes: CEH Topics & Objectives 2009 onwards > Biogeochemistry
CEH Sections: Billett
ISBN: 9789186125233
Additional Information. Not used in RCUK Gateway to Research.: This chapter is number 5.9 in the book. Access to full text is available by clicking on the OFFICIAL URL link
Date made live: 24 Jan 2012 11:37
URI: http://nora.nerc.ac.uk/id/eprint/16299

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