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Regional differences in the occurrence of understorey species reflect nitrogen deposition in Swedish forests.
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2003 (English)In: Ambio, ISSN 0044-7447, E-ISSN 1654-7209, Vol. 32, no 2, 91-7 p.Article in journal (Refereed) Published
Abstract [en]

Possible links between the occurrence of Vaccinium myrtillus, V. vitis-idaea and Deschampsia flexuosa and rates of nitrogen deposition were investigated in 557 coniferous forest stands. In areas with high N-deposition, V. myrtillus was less frequent, less abundant and more susceptible to the leaf pathogen Valdensia heterodoxa than in areas with lower levels of N-deposition. The occurrence of V. vitis-idaea was also strongly negatively correlated with increasing N-deposition, but no such trend was found for D. flexuosa. In regions with high N-deposition, V. myrtillus was more common in stands dominated by Scots pine than in stands dominated by Norway spruce. This was not the case in regions with lower levels of N-deposition. The patterns observed accord with results from N-addition experiments that demonstrate significant effects on vegetation, caused by N-deposition. The data suggest that even low rates of N-deposition may decrease the abundance of the most dominant species in coniferous forest ground flora.

Place, publisher, year, edition, pages
2003. Vol. 32, no 2, 91-7 p.
Identifiers
URN: urn:nbn:se:umu:diva-99642PubMedID: 12733792OAI: oai:DiVA.org:umu-99642DiVA: diva2:787358
Available from: 2015-02-10 Created: 2015-02-10 Last updated: 2017-12-04

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