Full TGIF Record # 69211
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Web URL(s):https://link.springer.com/article/10.1023/A%3A1004601915836
    Last checked: 09/27/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide page
Publication Type:
i
Refereed
Author(s):Hartwig, Ueli A.; Lüscher, Andreas; Daepp, Markus; Blum, Herbert; Soussana, Jean-François; Nösberger, Josef
Author Affiliation:Hartwig, Lüscher, Daepp, Blum, Hösberger, Josef: Institute of Plant Sciences, Swiss Federal Institute of Technology (ETH), Zürich, Switzerland; Soussana: Fonctionnement et Gestion de l'Ecosystème Prairial, INRA-Agronomie, Clermont-Ferrand, France
Title:Due to symbiotic Nâ‚‚ fixation, five years of elevated atmospheric pCOâ‚‚ had no effect on the N concentration of plant litter in fertile, mixed grassland
Meeting Info.:Capri, Italy: September 24-27, 1998
Source:Plant and Soil. Vol. 224, No. 1, 2000, p. 43-50.
# of Pages:8
Publishing Information:Dordrecht, Netherlands: Kluwer Academic Publishers
Keywords:TIC Keywords: Nitrogen fixation; Carbon dioxide; Nitrogen; Grasslands; Pressure; Lolium perenne; Trifolium repens; Thatch; Ecosystems; Nitrogen cycle; Biomass; Legumes
Cultivar Names:Bastion; Milkanova
Abstract/Contents:"Experimental findings indicate that, in terrestrial ecosystems, nitrogen cycling changes under elevated partial pressure of atmospheric COâ‚‚ (pCOâ‚‚). It was suggested that the concentration of N in plant litter as well as the amount of litter are responsible for these changes. However, for grassland ecosystems, there have been no relevant data available to support this hypothesis. Data from five years of the Swiss FACE experiment show that, under fertile soil conditions in a binary plant community consisting of Lolium perenne L. and Trifolium repens L., the concentration of litter N does not change under elevated atmospheric pCOâ‚‚; this applies to harvest losses, stubble, stolons and roots as the sources of litter. This is in strong contrast to the COâ‚‚ response of L. perenne swards without associated legumes; in this case the above-ground concentration of biomass N decreased substantially. Increased symbiotic Nâ‚‚ fixation in T. repens nodules and a greater proportion of the N-rich T. repens in the community are regarded as the main mechanisms that buffer the increased C introduction into the ecosystem under elevated atmospheric pCOâ‚‚. Our data also suggest that elevated atmospheric pCOâ‚‚ results in greater amounts of litter, mainly due to increased root biomass production. This study indicates that, in a fertile grassland ecosystem with legumes, the concentration of N in plant litter is not affected by elevated atmospheric pCOâ‚‚ and, thus, cannot explain COâ‚‚-induced changes in the cycling of N."
Language:English
References:40
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hartwig, U. A., A. Lüscher, M. Daepp, H. Blum, J.-F. Soussana, and J. Nösberger. 2000. Due to symbiotic N₂ fixation, five years of elevated atmospheric pCO₂ had no effect on the N concentration of plant litter in fertile, mixed grassland. Plant Soil. 224(1):p. 43-50.
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Web URL(s):
https://link.springer.com/article/10.1023/A%3A1004601915836
    Last checked: 09/27/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide page
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