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Effects of ozone depletion and increased ultraviolet-B radiation on northern vegetation

Björn, Lars Olof LU ; Callaghan, T. V.; Gehrke, C; Gwynn-Jones, D; Lee, J A; Johanson, U; Sonesson, M and Buck, N D (1999) In Polar Research 18(2). p.331-337
Abstract
The stratospheric ozone layer has been depleted at high and mid-latitudes as a consequence of man's pollution of the atmosphere, and this results in increasing ultraviolet-B radiation at ground level. We investigate the effects of further radiation increases on plants and ecosystems by irradiating natural sub-Arctic and Arctic vegetation with artificial W-B radiation in field experiments extending over several years. Our experimental sites are located at Abisko, in northern Sweden (68 degrees N), and Adventdalen, on the island of Spitsbergen (78 degrees N). Additional UV-B induced interspecific differences in plant response in terms of reduced (or, in one case, increased) growth, changed morphology and changed pigment content. In some... (More)
The stratospheric ozone layer has been depleted at high and mid-latitudes as a consequence of man's pollution of the atmosphere, and this results in increasing ultraviolet-B radiation at ground level. We investigate the effects of further radiation increases on plants and ecosystems by irradiating natural sub-Arctic and Arctic vegetation with artificial W-B radiation in field experiments extending over several years. Our experimental sites are located at Abisko, in northern Sweden (68 degrees N), and Adventdalen, on the island of Spitsbergen (78 degrees N). Additional UV-B induced interspecific differences in plant response in terms of reduced (or, in one case, increased) growth, changed morphology and changed pigment content. In some cases effects seem to be accumulated from one year to another. Plant litter decomposition is retarded. We are also studying how UV-B enhancement may affect the interaction between species. In some experiments we combine UV-B enhancement with changes in other factors: carbon dioxide concentration, water availability, and temperature. In some cases the effect of radiation enhancement is modified, or even reversed, by such changes. Over a four year period we did not find any significant radiation induced change in species composition, but based on the effects on individual plant species, such changes can be expected to take place over a longer time. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Polar Research
volume
18
issue
2
pages
331 - 337
publisher
Wiley-Blackwell
external identifiers
  • scopus:0343092024
ISSN
0800-0395
DOI
10.1111/j.1751-8369.1999.tb00311.x
language
English
LU publication?
yes
id
dc438e25-59e9-4f78-9b01-07fe645b8fa5 (old id 134405)
date added to LUP
2007-07-30 09:25:10
date last changed
2017-01-01 04:41:22
@article{dc438e25-59e9-4f78-9b01-07fe645b8fa5,
  abstract     = {The stratospheric ozone layer has been depleted at high and mid-latitudes as a consequence of man's pollution of the atmosphere, and this results in increasing ultraviolet-B radiation at ground level. We investigate the effects of further radiation increases on plants and ecosystems by irradiating natural sub-Arctic and Arctic vegetation with artificial W-B radiation in field experiments extending over several years. Our experimental sites are located at Abisko, in northern Sweden (68 degrees N), and Adventdalen, on the island of Spitsbergen (78 degrees N). Additional UV-B induced interspecific differences in plant response in terms of reduced (or, in one case, increased) growth, changed morphology and changed pigment content. In some cases effects seem to be accumulated from one year to another. Plant litter decomposition is retarded. We are also studying how UV-B enhancement may affect the interaction between species. In some experiments we combine UV-B enhancement with changes in other factors: carbon dioxide concentration, water availability, and temperature. In some cases the effect of radiation enhancement is modified, or even reversed, by such changes. Over a four year period we did not find any significant radiation induced change in species composition, but based on the effects on individual plant species, such changes can be expected to take place over a longer time.},
  author       = {Björn, Lars Olof and Callaghan, T. V. and Gehrke, C and Gwynn-Jones, D and Lee, J A and Johanson, U and Sonesson, M and Buck, N D},
  issn         = {0800-0395},
  language     = {eng},
  number       = {2},
  pages        = {331--337},
  publisher    = {Wiley-Blackwell},
  series       = {Polar Research},
  title        = {Effects of ozone depletion and increased ultraviolet-B radiation on northern vegetation},
  url          = {http://dx.doi.org/10.1111/j.1751-8369.1999.tb00311.x},
  volume       = {18},
  year         = {1999},
}