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Shrubland primary production and soil respiration diverge along European climate gradient
Reinsch, Sabine (Centre for Ecology & Hydrology, Environment Centre Wales (Regne Unit))
Peñuelas, Josep (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)
Koller, Eva (Bangor University (Regne Unit). School of Environment, Natural Resources and Geography)
Sowerby, Alwyn (Centre for Ecology & Hydrology, Environment Centre Wales (Regne Unit))
Estiarte, Marc (Centre de Recerca Ecològica i Aplicacions Forestals)

Date: 2017
Abstract: Above- and belowground carbon (C) stores of terrestrial ecosystems are vulnerable to environmental change. Ecosystem C balances in response to environmental changes have been quantified at individual sites, but the magnitudes and directions of these responses along environmental gradients remain uncertain. Here we show the responses of ecosystem C to 8–12 years of experimental drought and night-time warming across an aridity gradient spanning seven European shrublands using indices of C assimilation (aboveground net primary production: aNPP) and soil C efflux (soil respiration: Rs). The changes of aNPP and Rs in response to drought indicated that wet systems had an overall risk of increased loss of C but drier systems did not. Warming had no consistent effect on aNPP across the climate gradient, but suppressed Rs more at the drier sites. Our findings suggest that above- and belowground C fluxes can decouple, and provide no evidence of acclimation to environmental change at a decadal timescale. aNPP and Rs especially differed in their sensitivity to drought and warming, with belowground processes being more sensitive to environmental change.
Note: Número d'acord de subvenció EC/FP7/227628
Note: Número d'acord de subvenció EC/FP7/610028
Note: Número d'acord de subvenció MICINN/CGL2013-48074-P
Note: Número d'acord de subvenció AGAUR/2014/SGR-274
Note: Número d'acord de subvenció OTKA/K112576
Note: Número d'acord de subvenció OTKA/PD115637
Note: imbalance p paper contact with: Marc Estiarte, m.estiarte@creaf.uab.cat
Rights: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Language: Anglès
Document: article ; recerca ; publishedVersion
Published in: Scientific Reports, 2017

DOI: 10.1038/srep43952
PMID: 28256623


7 p, 483.9 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Experimental sciences > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals) > Imbalance-P
Articles > Research articles
Articles > Published articles

 Record created 2017-04-07, last modified 2017-06-22



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