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Effects of increased N availability on biodiversity of Mediterranean-type
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Resumo(s)
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.
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Contexto Educativo
Citação
Hicks WK, Whitfield CP, Bealey WJ, Sutton MA (eds.) Nitrogen Deposition and Natura 2000- Science & practice in determining environmental impacts (Book of Proceedings of the COST729 Mid-term workshop).