Ambient ultraviolet radiation in the Arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass
Udgivelsesdato: April 2005 We assessed the effects of ambient solar ultraviolet (UV) radiation on below-ground parameters in an arctic heath in north-eastern Greenland. We hypothesized that the current UV fluxes would reduce root biomass and mycorrhizal colonization and that these changes would lead...
Published in: | Global Change Biology |
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2005
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Online Access: | https://curis.ku.dk/portal/da/publications/ambient-ultraviolet-radiation-in-the-arctic-reduces-root-biomass-and-alters-microbial-community-composition-but-has-no-effects-on-microbial-biomass(3db9dee0-2418-11de-9f0a-000ea68e967b).html https://doi.org/10.1111/j.1365-2486.2005.00933.x |
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ftcopenhagenunip:oai:pure.atira.dk:publications/3db9dee0-2418-11de-9f0a-000ea68e967b 2023-12-17T10:23:21+01:00 Ambient ultraviolet radiation in the Arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass Rinnan, R. Keinänen, M. M. Kasurinen, A. Asikainen, J. Kekki, T. K. Holopainen, T. Ro-Poulsen, Helge Mikkelsen, T. N. Michelsen, Anders 2005 https://curis.ku.dk/portal/da/publications/ambient-ultraviolet-radiation-in-the-arctic-reduces-root-biomass-and-alters-microbial-community-composition-but-has-no-effects-on-microbial-biomass(3db9dee0-2418-11de-9f0a-000ea68e967b).html https://doi.org/10.1111/j.1365-2486.2005.00933.x eng eng info:eu-repo/semantics/restrictedAccess Rinnan , R , Keinänen , M M , Kasurinen , A , Asikainen , J , Kekki , T K , Holopainen , T , Ro-Poulsen , H , Mikkelsen , T N & Michelsen , A 2005 , ' Ambient ultraviolet radiation in the Arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass ' , Global Change Biology , vol. 11 , no. 4 , pp. 564 - 574 . https://doi.org/10.1111/j.1365-2486.2005.00933.x article 2005 ftcopenhagenunip https://doi.org/10.1111/j.1365-2486.2005.00933.x 2023-11-22T23:58:37Z Udgivelsesdato: April 2005 We assessed the effects of ambient solar ultraviolet (UV) radiation on below-ground parameters in an arctic heath in north-eastern Greenland. We hypothesized that the current UV fluxes would reduce root biomass and mycorrhizal colonization and that these changes would lead to lower soil microbial biomass and altered microbial community composition. These hypotheses were tested on cored soil samples from a UV reduction experiment with three filter treatments (Mylar, 60% UV-B reduction; Lexan, up to 90% UV-B reduction+UV-A reduction; UV transparent Teflon, filter control) and an open control treatment in two study sites after 3 years' manipulation. Reduction of both UV-A and UV-B radiation caused over 30% increase in the root biomass of Vaccinium uliginosum, which was the dominant plant species. UV reduction had contrasting effects on ericoid mycorrhizal colonization of V. uliginosum roots in the two sites, while it had no clear effects on fungal (ergosterol) or microbial biomass (measured both with fumigation-extraction and quantitative lipid biomarker analysis) in soil. However, principal component analysis of lipid biomarkers (phospholipid and glycolipid fatty acid profiles) showed that microbial community composition was altered by UV reduction. Although the UV responses were slight considering the large dose difference between the treatments (from near-ambient to up to 90% UV-B reduction), we cannot rule out the possibility that the recovery of ozone layer would change the below-ground functioning of arctic ecosystems. Article in Journal/Newspaper Arctic Arctic Greenland Ultraviolet Radiation in the Arctic University of Copenhagen: Research Arctic Greenland Global Change Biology 11 4 564 574 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
Udgivelsesdato: April 2005 We assessed the effects of ambient solar ultraviolet (UV) radiation on below-ground parameters in an arctic heath in north-eastern Greenland. We hypothesized that the current UV fluxes would reduce root biomass and mycorrhizal colonization and that these changes would lead to lower soil microbial biomass and altered microbial community composition. These hypotheses were tested on cored soil samples from a UV reduction experiment with three filter treatments (Mylar, 60% UV-B reduction; Lexan, up to 90% UV-B reduction+UV-A reduction; UV transparent Teflon, filter control) and an open control treatment in two study sites after 3 years' manipulation. Reduction of both UV-A and UV-B radiation caused over 30% increase in the root biomass of Vaccinium uliginosum, which was the dominant plant species. UV reduction had contrasting effects on ericoid mycorrhizal colonization of V. uliginosum roots in the two sites, while it had no clear effects on fungal (ergosterol) or microbial biomass (measured both with fumigation-extraction and quantitative lipid biomarker analysis) in soil. However, principal component analysis of lipid biomarkers (phospholipid and glycolipid fatty acid profiles) showed that microbial community composition was altered by UV reduction. Although the UV responses were slight considering the large dose difference between the treatments (from near-ambient to up to 90% UV-B reduction), we cannot rule out the possibility that the recovery of ozone layer would change the below-ground functioning of arctic ecosystems. |
format |
Article in Journal/Newspaper |
author |
Rinnan, R. Keinänen, M. M. Kasurinen, A. Asikainen, J. Kekki, T. K. Holopainen, T. Ro-Poulsen, Helge Mikkelsen, T. N. Michelsen, Anders |
spellingShingle |
Rinnan, R. Keinänen, M. M. Kasurinen, A. Asikainen, J. Kekki, T. K. Holopainen, T. Ro-Poulsen, Helge Mikkelsen, T. N. Michelsen, Anders Ambient ultraviolet radiation in the Arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass |
author_facet |
Rinnan, R. Keinänen, M. M. Kasurinen, A. Asikainen, J. Kekki, T. K. Holopainen, T. Ro-Poulsen, Helge Mikkelsen, T. N. Michelsen, Anders |
author_sort |
Rinnan, R. |
title |
Ambient ultraviolet radiation in the Arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass |
title_short |
Ambient ultraviolet radiation in the Arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass |
title_full |
Ambient ultraviolet radiation in the Arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass |
title_fullStr |
Ambient ultraviolet radiation in the Arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass |
title_full_unstemmed |
Ambient ultraviolet radiation in the Arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass |
title_sort |
ambient ultraviolet radiation in the arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass |
publishDate |
2005 |
url |
https://curis.ku.dk/portal/da/publications/ambient-ultraviolet-radiation-in-the-arctic-reduces-root-biomass-and-alters-microbial-community-composition-but-has-no-effects-on-microbial-biomass(3db9dee0-2418-11de-9f0a-000ea68e967b).html https://doi.org/10.1111/j.1365-2486.2005.00933.x |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic Greenland Ultraviolet Radiation in the Arctic |
genre_facet |
Arctic Arctic Greenland Ultraviolet Radiation in the Arctic |
op_source |
Rinnan , R , Keinänen , M M , Kasurinen , A , Asikainen , J , Kekki , T K , Holopainen , T , Ro-Poulsen , H , Mikkelsen , T N & Michelsen , A 2005 , ' Ambient ultraviolet radiation in the Arctic reduces root biomass and alters microbial community composition but has no effects on microbial biomass ' , Global Change Biology , vol. 11 , no. 4 , pp. 564 - 574 . https://doi.org/10.1111/j.1365-2486.2005.00933.x |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1365-2486.2005.00933.x |
container_title |
Global Change Biology |
container_volume |
11 |
container_issue |
4 |
container_start_page |
564 |
op_container_end_page |
574 |
_version_ |
1785557322780639232 |