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Rationale, concepts...
Rationale, concepts and approach to the assessment
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Callaghan, Terry V. (author)
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- Björn, Lars Olof (author)
- Lund University,Lunds universitet,Molekylär cellbiologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Molecular Cell Biology,Department of Biology,Faculty of Science
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Chernov, Yuri (author)
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Chapin, Terry (author)
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- Christensen, Torben (author)
- Lund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science
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Huntley, Brian (author)
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Ims, Rolf A. (author)
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Johansson, Margareta (author)
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Jolly, Dyanna (author)
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Jonasson, Sven (author)
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Matveyeva, Nadya (author)
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Panikov, Nicolai (author)
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Oechel, Walter (author)
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Shaver, Gus (author)
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(creator_code:org_t)
- 2004
- 2004
- English.
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In: Ambio: a Journal of Human Environment. - 0044-7447. ; 33:7, s. 393-397
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Abstract
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- A general recognition that the Arctic will amplify global climate warming, that UV-B radiation may continue to increase there because of possible delays in the repair of stratospheric ozone, and that the Arctic environment and its peoples are likely to be particularly susceptible to such environmental changes stimulated an international assessment of climate change impacts. The Arctic Climate Impacts Assessment (ACIA) is a four-year study, culminating in publication of a major scientific report (1) as well as other products. In this paper and those following in this Ambio Special Issue, we present the findings of the section of the report that focuses on terrestrial ecosystems of the Arctic, from the treeline ecotone to the polar deserts. The Arctic is generally recognized as a treeless wilderness with cold winters and cool summers. However, definitions of the southern boundary vary according to environmental, geographical or political biases. This paper and the assessment in the following papers of this Ambio Special Issue focus on biota (plants, animals and microorganisms) and processes in the region beyond the northern limit of the closed forest (the taiga), but we also include processes south of this boundary that affect ecosystems in the Arctic. Examples are overwintering periods of migratory animals spent in the south and the regulation of the latitudinal treeline. The geographical area we have defined as the current Arctic is the area we use for developing scenarios of future impacts: Our geographical area of interest will not decrease under a scenario of the replacement of current Arctic tundra by boreal forests.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Naturgeografi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Physical Geography (hsv//eng)
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Callaghan, Terry ...
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Björn, Lars Olof
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Chernov, Yuri
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Chapin, Terry
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Christensen, Tor ...
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Huntley, Brian
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show more...
-
Ims, Rolf A.
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Johansson, Marga ...
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Jolly, Dyanna
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Jonasson, Sven
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Matveyeva, Nadya
-
Panikov, Nicolai
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Oechel, Walter
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Shaver, Gus
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Physical Geograp ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
- Articles in the publication
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Ambio: a Journal ...
- By the university
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Lund University