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Influence of herbivory and abiotic factors on the distribution of tall forbs along a productivity gradient: a transplantation experiment
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2001 (English)In: Oikos, ISSN 0030-1299, E-ISSN 1600-0706, Vol. 94, no 2, 351-357 p.Article in journal (Refereed) Published
Abstract [en]

In arctic-alpine areas tall herb vegetation is restricted to sites with high productivity. At higher elevation, low prostate forbs and narrow-leaved graminoids dominate the vegetation in sites with a protecting snow cover during winter. In this study, I test whether herbivory or abiotic factors prevent tall forbs from growing at higher altitudes. Vegetation blocks from a tall herb meadow were transplanted to herbivore exclosures and open plots in a low-productive snowbed and a productive tall herb meadow. The tall forbs performed equally well in the exclosures on the low-productive snowbed as in the tall herb meadow, but decreased in the open plots on the low-productive snowbed. Thus, even if abiotic factors are ultimately causing many of the vegetation patterns observed in arctic-alpine plant communities, herbivory appears to be the main proximate factor responsible for the decreasing abundance of tall forbs along gradients of decreasing productivity in arctic-alpine areas.

Place, publisher, year, edition, pages
Wiley , 2001. Vol. 94, no 2, 351-357 p.
Identifiers
URN: urn:nbn:se:umu:diva-39599DOI: 10.1034/j.1600-0706.2001.940216.xISI: 000171173200016OAI: oai:DiVA.org:umu-39599DiVA: diva2:394295
Available from: 2011-02-02 Created: 2011-02-02 Last updated: 2017-12-11Bibliographically approved

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  • apa
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  • asciidoc
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