Climate Change and UV-B Impacts on Arctic Tundra and Polar Desert Ecosystems: Key Findings and Extended Summaries

The Arctic has become an important region in which to assess the impacts of current climate variability and ampliﬁcation of projected global warming. This is because i) the Arctic has experienced considerable warming in recent decades (an average of about 3°C and between 4° and 5°C over much of the landmass); i) climate projections suggest a continuation of the warming trend with an increase in mean annual temperatures of 4–5°C by 2080; ii) recent warming is already impacting the environment and economy of the Arctic and these impacts are expected to increase and affect also life style, culture and ecosystems; and iv) changes occurring in the Arctic are likely to affect other regions of the Earth, for example changes in snow, vegetation and sea ice are likely to affect the energy balance and ocean circulation at regional and even global scales (Chapter 1 in ref. 1). Responding to the urgent need to understand and project impacts of changes in climate and UV-B radiation on many facets of the Arctic, the Arctic Climate Impact Assessment (ACIA) (1) undertook a four-year study. Part of this study (1–10) assessed the impacts of changes in climate and UV-B radiation on Arctic terrestrial ecosystems, both those changes already occurring and those likely to occur in the future. Here, we present the key ﬁndings of the assessment of climate change impacts on tundra and polar desert ecosystems, and xtended summaries of its components.

Björn, Lars OlofLund University,Lunds universitet,Molekylär cellbiologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Molecular Cell Biology,Department of Biology,Faculty of Science(Swepub:lu)fysb-lob (author)
Chernov, Yuri (author)
Chapin, Terry (author)
Christensen, TorbenLund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science(Swepub:lu)ekol-tch (author)
Huntley, Brian (author)
Ims, Rolf A. (author)
Johansson, Margareta (author)
Jolly, Dyanna (author)
Jonasson, Sven (author)
Matveyeva, Nadya (author)
Panikov, Nicolai (author)
Oechel, Walter (author)
Shaver, Gus (author)
Schaphoff, Sibyll (author)
Sitch, Stephen (author)
Zöckler, Christoph (author)
Molekylär cellbiologiBiologiska institutionen (creator_code:org_t)

By the author/editor: Callaghan, Terry ...; Björn, Lars Olof; Chernov, Yuri; Chapin, Terry; Christensen, Tor ...; Huntley, Brian; show more...; Ims, Rolf A.; Johansson, Marga ...; Jolly, Dyanna; Jonasson, Sven; Matveyeva, Nadya; Panikov, Nicolai; Oechel, Walter; Shaver, Gus; Schaphoff, Sibyl ...; Sitch, Stephen; Zöckler, Christo ...; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Physical Geograp ...

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