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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03016naa a2200349 4500 | |
| 001 | oai:lup.lub.lu.se:61292fd8-fceb-4ecb-a463-4eac9ab77882 | |
| 003 | SwePub | |
| 008 | 160401s2002 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://lup.lub.lu.se/record/1343552 URI |
| 024 | 7 | a https://doi.org/10.1007/s00442-002-0963-z2 DOI |
| 040 | a (SwePub)lu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a art2 swepub-publicationtype |
| 072 | 7 | a ref2 swepub-contenttype |
| 100 | 1 | a Solheim, Bjørn4 aut |
| 245 | 1 0 | a The nitrogen fixation potential of arctic cryptogram species is influenced by enhanced UV-B radiation |
| 264 | c 2002-09-01 | |
| 264 | 1 | b Springer Science and Business Media LLC,c 2002 |
| 520 | a Abstract. Effects of enhanced UV-B (representing a 15% ozone depletion) on cyanobacterial nitrogen fixation were measured at a high arctic site (Adventdalen, 79°N, Svalbard) and a subarctic site (Abisko, 68°N, Sweden). Nitrogen fixation potential (acetylene reduction) by cyanobacteria associated with the moss Sanionia uncinata in vegetation exposed to experimentally enhanced levels of UV-B for 3 and 4 years in the high arctic in Adventdalen was reduced by 50% compared to controls after 3 years. No reduction in nitrogen fixation potential was observed in cyanobacteria associated with the moss Hylocomium splendens when previously exposed to enhanced UV-B in Abisko for a 7-year period. However, in the same experiment a 50% increase in summer precipitation stimulated nitrogen fixation potential by up to 6-fold above the natural precipitation treatments both in cyanobacteria associated with vegetation exposed to natural and enhanced UV-B radiation. In contrast to the lack of UV effect on moss-associated nitrogen fixation at the subarctic site, nitrogen fixation potential by the dominant lichen species Peltigera aphthosa was reduced by 50% when measured after 8 years exposure to elevated UV-B treatment. Evidence from these studies highlights the importance of UV-B radiation for cyanobacterial nitrogen fixation in the Arctic and future impact on nitrogen availability in such plant communities. | |
| 650 | 7 | a NATURVETENSKAPx Biologi0 (SwePub)1062 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Biological Sciences0 (SwePub)1062 hsv//eng |
| 700 | 1 | a Johanson, Ulf4 aut |
| 700 | 1 | a Callaghan, Terry V.4 aut |
| 700 | 1 | a Lee, John A.4 aut |
| 700 | 1 | a Gwynn-Jones, Dylan4 aut |
| 700 | 1 | a Björn, Lars Olofu Lund University,Lunds universitet,Molekylär cellbiologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Molecular Cell Biology,Department of Biology,Faculty of Science4 aut0 (Swepub:lu)fysb-lob |
| 710 | 2 | a Molekylär cellbiologib Biologiska institutionen4 org |
| 773 | 0 | t Oecologiad : Springer Science and Business Media LLCg 133:1, s. 90-93q 133:1<90-93x 1432-1939x 0029-8549 |
| 856 | 4 | u http://dx.doi.org/10.1007/s00442-002-0963-zy FULLTEXT |
| 856 | 4 8 | u https://lup.lub.lu.se/record/134355 |
| 856 | 4 8 | u https://doi.org/10.1007/s00442-002-0963-z |
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