umu.sePublications
Change search
ReferencesLink to record
Permanent link

Direct link
Above-ground and below-ground plant responses to fertilization in two subarctic ecosystems
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2015 (English)In: Arctic, Antarctic and Alpine research, ISSN 1523-0430, E-ISSN 1938-4246, Vol. 47, no 4, 693-702 p.Article in journal (Refereed) Published
Abstract [en]

Soil nutrient supply is likely to change in the Arctic due to altered process rates associated with climate change. Here, we compare the responses of herbaceous tundra and birch forest understory to fertilization, considering both above-and below-ground responses. We added nitrogen and phosphorus to plots in both vegetation types for three years near Abisko, northern Sweden, and measured the effect on above-and below-ground plant community properties and soil characteristics. Fertilization increased ground-layer shoot mass, the cover of grasses, and tended to enhance total root length below-ground, while it reduced the cover of low statured deciduous dwarf-shrubs. The only statistically significant interaction between vegetation type and fertilization was for grass cover, which increased twofold in forest understory but sixfold in tundra following fertilization. The lack of interactions for other variables suggests that the ground layers in these contrasting vegetation types have similar responses to fertilization. The nutrient-driven increase in grass cover and species-specific differences in productivity and root characters may alter ecosystem dynamics and C cycling in the long-term, but our study indicates that the response of birch forest understory and tundra vegetation may be consistent.

Place, publisher, year, edition, pages
2015. Vol. 47, no 4, 693-702 p.
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:umu:diva-111760DOI: 10.1657/AAAR0014-085ISI: 000363863300009ScopusID: 2-s2.0-84946027416OAI: oai:DiVA.org:umu-111760DiVA: diva2:874101
Available from: 2015-11-25 Created: 2015-11-23 Last updated: 2015-11-25Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Sundqvist, Maja K.Wilson, Scott D.
By organisation
Department of Ecology and Environmental Sciences
In the same journal
Arctic, Antarctic and Alpine research
Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 97 hits
ReferencesLink to record
Permanent link

Direct link