The Effects of Enhanced UV-B Radiation on the Growth of Dwarf Shrubs in a Subarctic Heathland
Johanson, U ; Gehrke, C ; Björn, Lars Olof LU
and Callaghan, T V
(1995)
In Functional Ecology
9(5).
p.713-719
- Abstract
- In a field irradiation experiment UV-B radiation was enhanced to simulate 15% ozone depletion under clear sky conditions in northern Sweden. This was accomplished by using UV-B fluorescent lamps mounted on metal frames raised over a naturally growing plant community. 2. The study area consisted of a dwarf shrub heath mainly composed of the four species Vaccinium vitis-idaea, V. myrtillus, V. uliginosum and Empetrum hermaphroditum. The absolute annual stem growth, relative stem growth and absolute leaf growth were recorded for different years. 3. The relative growth was significantly reduced by UV-B enhancement in the two evergreen species V. vitis-idaea (27% after 2 years of enhanced UV-B) and E. hermaphroditum (14% after 1 year and 33%... (More)
- In a field irradiation experiment UV-B radiation was enhanced to simulate 15% ozone depletion under clear sky conditions in northern Sweden. This was accomplished by using UV-B fluorescent lamps mounted on metal frames raised over a naturally growing plant community. 2. The study area consisted of a dwarf shrub heath mainly composed of the four species Vaccinium vitis-idaea, V. myrtillus, V. uliginosum and Empetrum hermaphroditum. The absolute annual stem growth, relative stem growth and absolute leaf growth were recorded for different years. 3. The relative growth was significantly reduced by UV-B enhancement in the two evergreen species V. vitis-idaea (27% after 2 years of enhanced UV-B) and E. hermaphroditum (14% after 1 year and 33% after 2 years). The two deciduous species also showed a tendency for decreased relative growth under enhanced UV-B, but this effect was not statistically significant. 4. The leaf thickness of V. vitis-idaea increased both during 1992 (9%) and 1993 (4%). In contrast, the two deciduous species V. myrtillus and V. uliginosum developed thinner leaves under enhanced UV-B both during 1992 (4% for V. myrtillus, 6% for V. uliginosum) and 1993 (9% for V. myrtillus, 10% for V. uliginosum). (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/134496
- author
- Johanson, U
; Gehrke, C
; Björn, Lars Olof
LU
and Callaghan, T V
- organization
- publishing date
- 1995
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Functional Ecology
- volume
- 9
- issue
- 5
- pages
- 713 - 719
- publisher
- Wiley-Blackwell
- external identifiers
-
- scopus:0028984384
- ISSN
- 1365-2435
- language
- English
- LU publication?
- yes
- id
- dbaa3aab-b006-4c2c-ab06-8cd308b96870 (old id 134496)
- alternative location
- http://links.jstor.org/sici?sici=0269-8463%28199510%299%3A5%3C713%3ATEOEUR%3E2.0.CO%3B2-F
- date added to LUP
- 2016-04-01 11:42:27
- date last changed
- 2021-01-03 05:18:42
@article{dbaa3aab-b006-4c2c-ab06-8cd308b96870,
abstract = {{In a field irradiation experiment UV-B radiation was enhanced to simulate 15% ozone depletion under clear sky conditions in northern Sweden. This was accomplished by using UV-B fluorescent lamps mounted on metal frames raised over a naturally growing plant community. 2. The study area consisted of a dwarf shrub heath mainly composed of the four species Vaccinium vitis-idaea, V. myrtillus, V. uliginosum and Empetrum hermaphroditum. The absolute annual stem growth, relative stem growth and absolute leaf growth were recorded for different years. 3. The relative growth was significantly reduced by UV-B enhancement in the two evergreen species V. vitis-idaea (27% after 2 years of enhanced UV-B) and E. hermaphroditum (14% after 1 year and 33% after 2 years). The two deciduous species also showed a tendency for decreased relative growth under enhanced UV-B, but this effect was not statistically significant. 4. The leaf thickness of V. vitis-idaea increased both during 1992 (9%) and 1993 (4%). In contrast, the two deciduous species V. myrtillus and V. uliginosum developed thinner leaves under enhanced UV-B both during 1992 (4% for V. myrtillus, 6% for V. uliginosum) and 1993 (9% for V. myrtillus, 10% for V. uliginosum).}},
author = {{Johanson, U and Gehrke, C and Björn, Lars Olof and Callaghan, T V}},
issn = {{1365-2435}},
language = {{eng}},
number = {{5}},
pages = {{713--719}},
publisher = {{Wiley-Blackwell}},
series = {{Functional Ecology}},
title = {{The Effects of Enhanced UV-B Radiation on the Growth of Dwarf Shrubs in a Subarctic Heathland}},
url = {{http://links.jstor.org/sici?sici=0269-8463%28199510%299%3A5%3C713%3ATEOEUR%3E2.0.CO%3B2-F}},
volume = {{9}},
year = {{1995}},
}