NDLI: Nitrogen uptake by grassland communities: contribution of N$_{2}$ fixation, facilitation, complementarity, and species dominance

Content Provider	Springer Nature Link
Author	Bessler, Holger Oelmann, Yvonne Roscher, Christiane Buchmann, Nina Scherer Lorenzen, Michael Schulze, Ernst Detlef Temperton, Vicky M. Wilcke, Wolfgang Engels, Christof
Copyright Year	2012
Abstract	This study aimed to measure the effect of plant diversity on N uptake in grasslands and to assess the mechanisms contributing to diversity effects.Annual N uptake into above- and belowground organs and soil nitrate pools were measured in the Jena experiment on a floodplain soil with mixtures of 2–16 species and 1–4 functional groups, and monocultures. In mixtures, the deviation of measured data from data expected from monoculture performance was calculated to assess the contribution of complementarity/facilitation and selection.N uptake varied from <1 to 45 g N m$^{−2}$ yr$^{−1}$, and was higher in grasslands with than without legumes. On average, N uptake was higher in mixtures (21 ± 1 g N m$^{−2}$ yr$^{−1}$) than monocultures (13 ± 1 g N m$^{−2}$ yr$^{−1}$), and increased with species richness in mixtures. However, compared to N uptake expected from biomass proportions of species in mixtures, N uptake of mixtures was only slightly higher and a significant surplus N uptake was confined to mixtures containing legumes and non-legumes.In our study, high N uptake of species rich mixtures was mainly due to dominance of productive species and facilitation by legumes whereas complementarity among non-legumes was of minor relevance.
Starting Page	301
Ending Page	322
Page Count	22
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	358
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-03-03
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biodiversity Complementarity Facilitation Grassland Jena experiment Legumes Nitrogen uptake Selection Plant Physiology Soil Science & Conservation Ecology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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