Increasing shrub abundance in the Arctic

Matthew Sturm (), Charles Racine and Kenneth Tape
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Matthew Sturm: US Army Cold Regions Research & Engineering Laboratory–Alaska
Charles Racine: US Army Cold Regions Research & Engineering Laboratory
Kenneth Tape: Geophysical Institute, University of Alaska–Fairbanks

Nature, 2001, vol. 411, issue 6837, 546-547

Abstract: Abstract The warming of the Alaskan Arctic during the past 150 years1 has accelerated over the last three decades2 and is expected to increase vegetation productivity in tundra if shrubs become more abundant3,4; indeed, this transition may already be under way according to local plot studies5 and remote sensing6. Here we present evidence for a widespread increase in shrub abundance over more than 320 km2 of Arctic landscape during the past 50 years, based on a comparison of historic and modern aerial photographs. This expansion will alter the partitioning of energy in summer7 and the trapping and distribution of snow in winter8, as well as increasing the amount of carbon stored in a region that is believed to be a net source of carbon dioxide9.

Date: 2001
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DOI: 10.1038/35079180

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