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Transfer of fixed-N from N-2-fixing cyanobacteria associated with the moss Sphagnum riparium results in enhanced growth of the moss
Linköping University, The Tema Institute, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
Linköping University, The Tema Institute, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
Linköping University, The Tema Institute, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
2013 (English)In: Plant and Soil, ISSN 0032-079X, E-ISSN 1573-5036, Vol. 362, no 1-2, 271-278 p.Article in journal (Refereed) Published
Abstract [en]

Despite the general assumption that nitrogen fixed by associated cyanobacteria will be readily utilised for growth by the Sphagnum, no empirical evidence is available in the literature. Therefore the effects of nitrogen transfer from cyanobacteria associated with S. riparium were investigated. less thanbrgreater than less thanbrgreater thanCultivation of S. riparium with and without cyanobacteria was performed under laboratory conditions for 57 days. less thanbrgreater than less thanbrgreater thanWe show that nitrogen fixation by cyanobacteria associated with Sphagnum mosses, influences moss growth by transfer of fixed nitrogen to the moss. More than 35 % of the nitrogen fixed by cyanobacteria was transferred to the newly formed moss biomass and resulted in an increase in the growth of Sphagnum biomass compared to the controls. The variation in the increase of nitrogen content explained 76 % of the biomass increment. less thanbrgreater than less thanbrgreater thanHence, nitrogen fixation will have immediate effect on the carbon fixation by Sphagnum. This shows that factors regulating nitrogen fixation will have a direct effect on the role of Sphagnum dominated ecosystems with respect to carbon cycling.

Place, publisher, year, edition, pages
Springer Verlag (Germany) , 2013. Vol. 362, no 1-2, 271-278 p.
Keyword [en]
Sphagnum riparium, Cyanobacteria, Nitrogen fixation, Peatlands, Nitrogen transfer
National Category
Social Sciences
Identifiers
URN: urn:nbn:se:liu:diva-87960DOI: 10.1007/s11104-012-1278-4ISI: 000312729400021OAI: oai:DiVA.org:liu-87960DiVA: diva2:601033
Note

Funding Agencies|Swedish National Research Council||

Available from: 2013-01-28 Created: 2013-01-28 Last updated: 2017-12-06

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Berg, AndreasDanielsson, ÅsaSvensson, Bo

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