Record ID No. |
3669 |
Author(s) |
Zavalloni, C., Vicca, S., Manu Büscher, de la Providencia, I.E., de Boulois, H.D., Declerck, S., Nijs, I., Ceulemans, R. , 2012 |
Affiliation |
Research Group of Plant and Vegetation Ecology, Department of Biology, University of Antwerp (Campus Drie Eiken), Universiteitsplein 1, B-2610 Wilrijk, Belgium, e-mail: costanza.zavalloni@uniud.it |
Title |
Exposure to warming and CO2 enrichment promotes greater above-ground biomass, nitrogen, phosphorus and arbuscular mycorrhizal colonization in newly established grasslands |
Source. Vol.(no):Page |
Plant and Soil, 359 (1-2): 121-136p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Soil temperature |
Host |
Plants |
Organism |
AMF |
Country |
Belgium, Europe |
Abstracts |
Aims: In view of the projected increase in global air temperature and CO2 concentration, the effects of
climatic changes on biomass production, CO2 fluxes and arbuscular mycorrhizal fungi (AMF) colonization in newly established grassland communities were investigated. We hypothesized that above- and belowground 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 belowground C allocation would enhance soil respiration
(Rsoil). Methods: Grassland communities were grown either at ambient temperatures with 375 ppm CO2 (Amb) or at ambient temperatures +3°C with 620 ppm CO2 (T+CO2). Results Total biomass production and GPP were stimulated under T+CO2. Above-ground biomass was increased under T+CO2 while belowground biomass was similar under both climates. The significant increase in root colonization intensity under T+CO2, and therefore
the better contact between roots and AMF, probably determined the higher above-ground P and N content. Rsoil was not significantly affected by the future climate conditions, only showing a tendency to increase under
future climate at the end of the season. |