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Quantifying nitroge...
Quantifying nitrogen-fixation in feather moss carpets of boreal forests
- Article/chapterEnglish2002
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Springer Science and Business Media LLC,2002
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printrdacarrier
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LIBRIS-ID:oai:DiVA.org:umu-44757
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-44757URI
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https://doi.org/10.1038/nature01051DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Biological nitrogen (N) fixation is the primary source of N within natural ecosystems(1), yet the origin of boreal forest N has remained elusive. The boreal forests of Eurasia and North America lack any significant, widespread symbiotic N-fixing plants(1-6). With the exception of scattered stands of alder in early primary successional forests(7), N-fixation in boreal forests is considered to be extremely limited. Nitrogen-fixation in northern European boreal forests has been estimated(2) at only 0.5 kg Nha(-1) yr(-1); however, organic N is accumulated in these ecosystems at a rate of 3 kg N ha(-1) yr(-1) (ref. 8). Our limited understanding of the origin of boreal N is unacceptable given the extent of the boreal forest region, but predictable given our imperfect knowledge of N-fixation(1,9). Herein we report on a N-fixing symbiosis between a cyanobacterium (Nostoc sp.) and the ubiquitous feather moss, Pleurozium schreberi (Bird) Mitt. that alone fixes between 1.5 and 2.0 kg N ha(-1) yr(-1) in mid- to late-successional forests of northern Scandinavia and Finland. Previous efforts have probably underestimated N-fixation potential in boreal forests.
Added entries (persons, corporate bodies, meetings, titles ...)
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Zackrisson, O
(author)
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Nilsson, M C
(author)
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Sellstedt, Anita,1955-Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)(Swepub:umu)anse0001
(author)
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Umeå universitetInstitutionen för fysiologisk botanik
(creator_code:org_t)
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In:Nature: Springer Science and Business Media LLC419:6910, s. 917-9200028-08361476-4687
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