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Legay, N.* ; Lavore, S.* ; Baxendale, C.* ; Krainer, U.* ; Binet, M.N.* ; Cantare, A.A.M.* ; Colace, M.P.* ; Foulquier, A.* ; Kastl, E.-M. ; Grigulis, K.* ; Mouhamadou, B.* ; Poly, F.* ; Pommier, T.* ; Schloter, M. ; Clément, J.C.* ; Bardgett, R.D.*

Influence of plant traits, soil microbial properties, and abiotic parameters on nitrogen turnover of grassland ecosystems.

Ecosphere 7:e01448 (2016)

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	Open Access Gold

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Although it is known that multiple interactions among plant functional traits, microbial properties, and abiotic soil parameters influence the nutrient turnover, the relative contribution of each of these groups of variables is poorly understood. We manipulated grassland plant functional composition and soil nitrogen (N) availability in a multisite mesocosm experiment to quantify their relative effects on soil N turnover. Overall, root traits, arbuscular mycorrhizal colonization, denitrification potential, as well as N availability and water availability, best explained the variation in measured ecosystem properties, especially the trade-off between nutrient sequestration and plant biomass production. Their relative contributions varied with soil N availability. In relatively N-poor soils (10-20 μgNg-1 soil), N turnover was mainly controlled by microbial properties and abiotic soil parameters, whereas in the relatively N-rich soils (110-120 μgNg-1 soil), N turnover was mainly controlled by plant traits and microbial properties. This experiment is a strong demonstration of the importance of functional characteristics of both plants and soil microbes, and their interplay with soil N availability, for N turnover in grassland soils.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords Ammonia-oxidizing Archaea And Bacteria ; Arbuscular Mycorrhizal Colonization ; Ecosystem Properties ; Grasslands ; Leaf Traits ; Nitrite Oxidizers ; Nitrite Reducers ; Nutrient Availability ; Root Traits ; Water Availability

e-ISSN 2150-8925

Journal Ecosphere

Quellenangaben Volume: 7, Issue: 11, Article Number: e01448

Publisher ESA

Publishing Place Ithaca, NY

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Research Unit Comparative Microbiome Analysis (COMI)