The effects of UV-B radiation on European heathland species
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The effects of UV-B radiation on European heathland species. / Björn, Lars O.; Callaghan, T. V.; Johnsen, Ib; Lee, J. A.; Manetas, Y.; Paul, N. D.; Sonesson, M.; Wellburn, A. R.; Coop, D.; Heide-Jørgensen, Henning; Gehrke, C.; Gwynn-Jones, D.; Johanson, U.; Kyparissis, A.; Levizou, E.; Nikolopoulos, D.; Petropoulou, Y.; Stephanou, M.
In: Plant Ecology, Vol. 128, No. 1-2, 1997, p. 253-264.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - The effects of UV-B radiation on European heathland species
AU - Björn, Lars O.
AU - Callaghan, T. V.
AU - Johnsen, Ib
AU - Lee, J. A.
AU - Manetas, Y.
AU - Paul, N. D.
AU - Sonesson, M.
AU - Wellburn, A. R.
AU - Coop, D.
AU - Heide-Jørgensen, Henning
AU - Gehrke, C.
AU - Gwynn-Jones, D.
AU - Johanson, U.
AU - Kyparissis, A.
AU - Levizou, E.
AU - Nikolopoulos, D.
AU - Petropoulou, Y.
AU - Stephanou, M.
PY - 1997
Y1 - 1997
N2 - The effects of enhanced UV-B radiation on three examples of European shrub-dominated vegetation were studied in situ. The experiments were in High Arctic Greenland, northern Sweden and Greece, and at all sites investigated the interaction of enhanced UV-B radiation (simulating a 15% reduction in the ozone layer) with artificially increased precipitation. The Swedish experiment also involved a study of the interaction between enhanced UV-B radiation and elevated CO2 (600 ppm). These field studies were supported by an outdoor controlled environment study in the United Kingdom involving modulated enhancement of UV-B radiation in combination with elevated CO2 (700 ppm). Effects of the treatments on plant growth, morphology, phenology and physiology were measured. The effects observed were species specific, and included both positive and negative responses to the treatments. In general the negative responses to UV-B treatments of up to three growing seasons were small, but included reductions in shoot growth and premature leaf senescence. Positive responses included a marked increase in flowering in some species and a stimulation of some photosynthetic processes. UV-B treatment enhanced the drought tolerance of Pinus pinea and Pinus halepensis by increasing leaf cuticle thickness. In general, there were few interactions between the elevated CO2 and enhanced UV-B treatments. There was evidence to suggest that although the negative responses to the treatments were small, damage may be increasing with time in some long-lived woody perennials. There was also evidence in the third year of treatments for effects of UV-B on insect herbivory in Vaccinium species. The experiments point to the necessity for long-term field investigations to predict the likely ecological consequences of increasing UV-B radiation.
AB - The effects of enhanced UV-B radiation on three examples of European shrub-dominated vegetation were studied in situ. The experiments were in High Arctic Greenland, northern Sweden and Greece, and at all sites investigated the interaction of enhanced UV-B radiation (simulating a 15% reduction in the ozone layer) with artificially increased precipitation. The Swedish experiment also involved a study of the interaction between enhanced UV-B radiation and elevated CO2 (600 ppm). These field studies were supported by an outdoor controlled environment study in the United Kingdom involving modulated enhancement of UV-B radiation in combination with elevated CO2 (700 ppm). Effects of the treatments on plant growth, morphology, phenology and physiology were measured. The effects observed were species specific, and included both positive and negative responses to the treatments. In general the negative responses to UV-B treatments of up to three growing seasons were small, but included reductions in shoot growth and premature leaf senescence. Positive responses included a marked increase in flowering in some species and a stimulation of some photosynthetic processes. UV-B treatment enhanced the drought tolerance of Pinus pinea and Pinus halepensis by increasing leaf cuticle thickness. In general, there were few interactions between the elevated CO2 and enhanced UV-B treatments. There was evidence to suggest that although the negative responses to the treatments were small, damage may be increasing with time in some long-lived woody perennials. There was also evidence in the third year of treatments for effects of UV-B on insect herbivory in Vaccinium species. The experiments point to the necessity for long-term field investigations to predict the likely ecological consequences of increasing UV-B radiation.
U2 - 10.1023/A:1009782207376
DO - 10.1023/A:1009782207376
M3 - Journal article
VL - 128
SP - 253
EP - 264
JO - Plant Ecology
JF - Plant Ecology
SN - 1385-0237
IS - 1-2
ER -
ID: 226547