(Table 1) Cover of shrub and tree species, and number of stems (>=3.5 cm DBH) during 1976-1977 and 2009-2010, respectively, supplement to: Rundqvist, Sara; Hedenås, Henrik; Sandström, Anneli; Emanuelsson, Urban; Eriksson, Håkan; Jonasson, Christer; Callaghan, Terry V (2011): Tree and shrub expansion over the past 34 years at the tree-line near Abisko, Sweden. AMBIO, 40(6), 683-692

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 sh...

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Bibliographic Details
Main Authors: Rundqvist, Sara, Hedenås, Henrik, Sandström, Anneli, Emanuelsson, Urban, Eriksson, Håkan, Jonasson, Christer, Callaghan, Terry V
Format: Dataset
Language:English
Published: PANGAEA - Data Publisher for Earth & Environmental Science 2011
Subjects:
Area/locality
DATE/TIME
Date/time end
Betula nana, cover
Betula pubescens czerepanovii, cover
Juniperus communis, cover
Populus tremula, cover
Salix spp., cover
Sorbus aucuparia, cover
Trees and shrubs, cover
Number of stems
International Polar Year 2007-2008 IPY
Abisko
Arctic
Betula nana
Climate change
Dwarf birch
Global warming
International Polar Year
IPY
Online Access:https://dx.doi.org/10.1594/pangaea.819497
https://doi.pangaea.de/10.1594/PANGAEA.819497
Description
Summary: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 (<3.5 cm diameter at breast height) were estimated during 2009-2010 and compared with historical documentation from 1976 to 1977. Similarly, all tree stems (>=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. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150

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