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Short-term effects of enhanced UV-B and CO2 on lichens at different latitudes

Sonesson, M ; Callaghan, T V and Björn, Lars Olof LU orcid (1995) In Lichenologist 27(6). p.547-557
Abstract
Interaction effects of UV-B and CO2 on three lichens species, Cladonia arbusculo, Cetraria islandica and Stereocaulon paschale, from two latitudinal sites, 68N and 56N, were studied in a laboratory experiment. The response of the plants was recorded by measuring their chlorophyll fluorescence. All species had a similar response to enhanced UV-B depending on the latitude from which the population came and the time of the season when they were sampled. Overall, there was a significant increase in photosystem II yield (as measured by a fluorescence technique) due to UV-B and no separate effect due to enhanced CO2, although there was a significant interaction between CO2 and UV-B. The increase due to UV-B was at the low CO2 level. There were... (More)
Interaction effects of UV-B and CO2 on three lichens species, Cladonia arbusculo, Cetraria islandica and Stereocaulon paschale, from two latitudinal sites, 68N and 56N, were studied in a laboratory experiment. The response of the plants was recorded by measuring their chlorophyll fluorescence. All species had a similar response to enhanced UV-B depending on the latitude from which the population came and the time of the season when they were sampled. Overall, there was a significant increase in photosystem II yield (as measured by a fluorescence technique) due to UV-B and no separate effect due to enhanced CO2, although there was a significant interaction between CO2 and UV-B. The increase due to UV-B was at the low CO2 level. There were also significant differences in response due to latitude. The results contradict our hypotheses that negative effects of UV-B would be larger in the North than in the South and that a negative response should be especially large during the early season. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Lichenologist
volume
27
issue
6
pages
547 - 557
publisher
Cambridge University Press
external identifiers
  • scopus:0000369670
ISSN
0024-2829
DOI
10.1016/S0024-2829(95)80013-1
language
English
LU publication?
yes
id
15371991-81a0-4cfb-825b-76060a2cd505 (old id 134491)
date added to LUP
2016-04-01 17:00:01
date last changed
2021-01-03 09:27:13
@article{15371991-81a0-4cfb-825b-76060a2cd505,
  abstract     = {{Interaction effects of UV-B and CO2 on three lichens species, Cladonia arbusculo, Cetraria islandica and Stereocaulon paschale, from two latitudinal sites, 68N and 56N, were studied in a laboratory experiment. The response of the plants was recorded by measuring their chlorophyll fluorescence. All species had a similar response to enhanced UV-B depending on the latitude from which the population came and the time of the season when they were sampled. Overall, there was a significant increase in photosystem II yield (as measured by a fluorescence technique) due to UV-B and no separate effect due to enhanced CO2, although there was a significant interaction between CO2 and UV-B. The increase due to UV-B was at the low CO2 level. There were also significant differences in response due to latitude. The results contradict our hypotheses that negative effects of UV-B would be larger in the North than in the South and that a negative response should be especially large during the early season.}},
  author       = {{Sonesson, M and Callaghan, T V and Björn, Lars Olof}},
  issn         = {{0024-2829}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{547--557}},
  publisher    = {{Cambridge University Press}},
  series       = {{Lichenologist}},
  title        = {{Short-term effects of enhanced UV-B and CO2 on lichens at different latitudes}},
  url          = {{http://dx.doi.org/10.1016/S0024-2829(95)80013-1}},
  doi          = {{10.1016/S0024-2829(95)80013-1}},
  volume       = {{27}},
  year         = {{1995}},
}