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Shrub encroachment in arctic and alpine tundra: Patterns of expansion and ecosystem impacts

Dates

Year
2011

Citation

Myers-Smith, Isla H., 2011, Shrub encroachment in arctic and alpine tundra: Patterns of expansion and ecosystem impacts: University of Alberta (Canada).

Summary

With a warming climate, northern ecosystems will face significant ecological changes such as permafrost thaw, increased frequency of forest fires, and shifting ecosystem boundaries including the spread of canopy-forming shrubs into tundra communities. A growing number of observations show increases in canopy-forming shrubs at sites around the circumpolar Arctic, which could cause major modifications to the diversity and functioning of tundra ecosystems. In this study of changes in willow ( Salix spp.) cover and abundance in tundra ecosystems of the Yukon Territory, I found evidence that canopy-forming willow patches have expanded and canopy heights have increased on Herschel Island and that willows have advanced upslope to extend their [...]

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Data source
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File Process
Type
End Note
Reference Item
4001 records
Reference File
nwblcc-20160306.xml

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