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Tree and shrub expansion over the past 34 years at the tree-line near Abisko, Sweden.

https://arctichealth.org/en/permalink/ahliterature130932
Source
Ambio. 2011 Sep;40(6):683-92
Publication Type
Article
Date
Sep-2011
Author
Sara Rundqvist
Henrik Hedenås
Anneli Sandström
Urban Emanuelsson
Håkan Eriksson
Christer Jonasson
Terry V Callaghan
Author Affiliation
Umeå University, Sweden. sara.rundqvist@gmail.com
Source
Ambio. 2011 Sep;40(6):683-92
Date
Sep-2011
Language
English
Publication Type
Article
Keywords
Betula - growth & development
Climate change
Ecosystem
Humans
Plant Development
Salix - growth & development
Sweden
Time Factors
Trees - growth & development
Abstract
Shrubs and trees are expected to expand in the sub-Arctic due to global warming. Our study was conducted in Abisko, sub-arctic Sweden. We recorded the change in coverage of shrub and tree species over a 32- to 34-year period, in three 50 x 50 m plots; in the alpine-tree-line ecotone. The cover of shrubs and trees ( or =3.5 cm) were noted and positions determined. There has been a substantial increase of cover of shrubs and trees, particularly dwarf birch (Betula nana), and mountain birch (Betula pubescens ssp. czerepanovii), and an establishment of aspen (Populus tremula). The other species willows (Salix spp.), juniper (Juniperus communis), and rowan (Sorbus aucuparia) revealed inconsistent changes among the plots. Although this study was unable to identify the causes for the change in shrubs and small trees, they are consistent with anticipated changes due to climate change and reduced herbivory.
Notes
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PubMed ID
21954730 View in PubMed
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