uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Tree recruitment above the treeline and potential for climate-driven treeline change
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
2009 (English)In: Journal of Vegetation Science, ISSN 1100-9233, E-ISSN 1654-1103, Vol. 20, no 6, 1133-1144 p.Article in journal (Refereed) Published
Abstract [en]

Questions   How do population structure and recruitment characteristics of Betula   saplings beyond the treeline vary among climatic regions, and what is   the potential for development into tree-sized individuals with   interacting grazing pressure?   Location   Scandes Mountains.   Methods   Sapling characteristics of Betula pubescens subsp. tortuosa, their   topographic position above the treeline, growth habitat and evidence of   recent grazing was investigated in three areas with a long continuous   grazing history, along a latitudinal gradient (62-69 degrees N).   Results   Saplings were common up to 100 m above the treeline in all areas. The   northern areas were characterised by small (< 30 cm) and young (mean 14   years old) saplings in exposed micro-topographic locations unfavourable   to long-term survival. In the southern area, broad height (2-183 cm)   and age (4-95 years; mean 32 years) distributions were found in   sheltered locations. Age declined with altitude in all areas. Sapling   growth rate varied within and between areas, and the age x height   interaction was significant only in the southern area. Growth rates   decreased from south to north and indicated a considerable time   required to reach tree size under prevailing conditions.   Conclusions   Regional differences can be attributed to climatic differences,   however, interacting biotic and abiotic factors such as   micro-topography, climate and herbivory, mutually affect the   characteristics of birch saplings. In view of the long time needed to   reach tree size, the generally expected evident and fast treeline   advance in response to climate warming may not be a likely short-term   scenario. The sapling pool in the southern region possesses strongest   potential for treeline advance.

Place, publisher, year, edition, pages
2009. Vol. 20, no 6, 1133-1144 p.
Keyword [en]
Alpine zone, Browsing, Climate change, Mountain birch, Saplings, Treeline dynamics
National Category
Biological Sciences
URN: urn:nbn:se:uu:diva-120473DOI: 10.1111/j.1654-1103.2009.01114.xISI: 000271189200015OAI: oai:DiVA.org:uu-120473DiVA: diva2:303404
Available from: 2010-03-12 Created: 2010-03-12 Last updated: 2010-07-01Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full texthttp://www3.interscience.wiley.com/journal/122593631/abstract
By organisation
Ecological Botany
In the same journal
Journal of Vegetation Science
Biological 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: 143 hits
ReferencesLink to record
Permanent link

Direct link