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Plant communities in a warming tundra: a synthesis of experimental and monitoring plot data.

Författare och institution:
Sarah C. Elmendorf (-); Greg HR. Henry (-); Robert G. Björk (Institutionen för växt- och miljövetenskaper); Ulf Molau (Institutionen för växt- och miljövetenskaper); Tundra Vegetation Change Group (-)
Publicerad i:
29th Oikos meeting, Tjärnö, Sweden, 7-9 February 2011,
Konferensbidrag, övrigt
Sammanfattning (abstract):
Remote sensing data indicate that rapid and dramatic changes in tundra vegetation data may already be occurring over much of the Arctic. Repeat measurements of long-term warming experiments and permanently marked monitoring plots offer invaluable opportunities to hone predictions about future climate impacts and assess recent change. Here, we report results from two synthesis projects with sites spanning North America, Europe, Asia, Australia, and Antarctica. Data sets include 59 warming experiments up to 20 years in length, as well as observational data from 156 tundra vegetation monitoring studies, conducted in 43 sites, over a 5-25 year period. Experimental data confirmed that warming increases the height of vascular plant groups and the abundance of deciduous shrubs, but longer-term experiments suggest some vegetation responses may not be sustained. Monitoring plots showed some indications of tundra greening over time, but links between temporal vegetation change and the degree of ambient climate change at the study site were weak.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
Biologiska vetenskaper ->
Ekologi ->
Terrestrisk ekologi
Arctic, Climate Change, International Tundra Experiment; Vegetation change
Postens nummer:
Posten skapad:
2011-02-18 09:20

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