NDLI: Exposure to warming and CO$_{2}$ enrichment promotes greater above-ground biomass, nitrogen, phosphorus and arbuscular mycorrhizal colonization in newly established grasslands

Content Provider	Springer Nature Link
Author	Zavalloni, Costanza Vicca, Sara Büscher, Manu Providencia, Ivan E. Dupré de Boulois, Hervé Declerck, Stéphane Nijs, Ivan Ceulemans, Reinhart
Copyright Year	2012
Abstract	In view of the projected increase in global air temperature and CO$_{2}$ concentration, the effects of climatic changes on biomass production, CO$_{2}$ fluxes and arbuscular mycorrhizal fungi (AMF) colonization in newly established grassland communities were investigated. We hypothesized that above- and below-ground biomass, gross primary productivity (GPP), AMF root colonization and nutrient acquisition would increase in response to the future climate conditions. Furthermore, we expected that increased below-ground C allocation would enhance soil respiration (R$_{soil}$).Grassland communities were grown either at ambient temperatures with 375 ppm CO$_{2}$ (Amb) or at ambient temperatures +3°C with 620 ppm CO$_{2}$ (T+CO$_{2}$).Total biomass production and GPP were stimulated under T+CO$_{2}$. Above-ground biomass was increased under T+CO$_{2}$ while belowground biomass was similar under both climates. The significant increase in root colonization intensity under T+CO$_{2}$, and therefore the better contact between roots and AMF, probably determined the higher above-ground P and N content. R$_{soil}$ was not significantly affected by the future climate conditions, only showing a tendency to increase under future climate at the end of the season.Newly established grasslands benefited from the exposure to elevated CO$_{2}$ and temperature in terms of total biomass production; higher root AMF colonization may partly provide the nutrients required to sustain this growth response.
Starting Page	121
Ending Page	136
Page Count	16
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	359
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-03-08
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Climate warming Elevated CO$_{2}$ Arbuscular mycorrhizal fungi Soil respiration GPP Roots Nitrogen Phosphorus Plant Sciences Ecology Plant Physiology Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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