Arctic microorganisms respond more to elevated UV-B radiation than CO2

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dc.contributor.author Lee, John A.
dc.contributor.author Campbell, Colin D.
dc.contributor.author Callaghan, Terry V.
dc.contributor.author Gwynn-Jones, Dylan
dc.contributor.author Johnson, David
dc.date.accessioned 2008-12-08T13:54:11Z
dc.date.available 2008-12-08T13:54:11Z
dc.date.issued 2002-03-07
dc.identifier.citation Lee , J A , Campbell , C D , Callaghan , T V , Gwynn-Jones , D & Johnson , D 2002 , ' Arctic microorganisms respond more to elevated UV-B radiation than CO2 ' Nature , pp. 82-83 . , 10.1038/416082a en
dc.identifier.issn 1476-4687
dc.identifier.other PURE: 90850
dc.identifier.other dspace: 2160/1446
dc.identifier.uri http://hdl.handle.net/2160/1446
dc.identifier.uri http://www.nature.com/nature/journal/v416/n6876/full/416082a.html en
dc.description David Johnson, Colin D. Campbell, John A. Lee, Terry V. Callaghan and Dylan Gwynn-Jones (2002). Arctic microorganisms respond more to elevated UV-B radiation than CO2. Nature, 416 (6876) pp.82-83 Sponsorship: NERC / EU / Swedish Academy of Sciences RAE2008 en
dc.description.abstract Surface ultraviolet-B radiation and atmospheric CO2 concentrations have increased as a result of ozone depletion and burning of fossil fuels1, 2. The effects are likely to be most apparent in polar regions3 where ozone holes have developed and ecosystems are particularly sensitive to disturbance4. Polar plant communities are dependent on nutrient cycling by soil microorganisms, which represent a significant and highly labile portion of soil carbon (C) and nitrogen (N). It was thought5 that the soil microbial biomass was unlikely to be affected by exposure of their associated plant communities to increased UV-B. In contrast, increasing atmospheric CO2 concentrations were thought to have a strong effect as a result of greater below-ground C allocation6. In addition, there is a growing belief that ozone depletion is of only minor environmental concern because the impacts of UV-B radiation on plant communities are often very subtle7. Here we show that 5 years of exposure of a subarctic heath to enhanced UV-B radiation both alone and in combination with elevated CO2 resulted in significant changes in the C:N ratio and in the bacterial community structure of the soil microbial biomass. en
dc.format.extent 2 en
dc.language.iso eng
dc.relation.ispartof Nature en
dc.title Arctic microorganisms respond more to elevated UV-B radiation than CO2 en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1038/416082a
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en


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