Shrubland primary production and soil respiration diverge along European climate gradient
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Yn: Scientific Reports, Cyfrol 7, 43952, 03.2017.
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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T1 - Shrubland primary production and soil respiration diverge along European climate gradient
AU - Reinsch, Sabine
AU - Koller, Eva
AU - Sowerby, Alwyn
AU - de Dato, Giovanbattista
AU - Estiarte, Marc
AU - Guidolotti, Gabriele
AU - Kovács-Láng, Edit
AU - Kröel-Dulay, György
AU - Lellei-Kovács, Eszter
AU - Larsen, Klaus S.
AU - Liberati, Dario
AU - Peñuelas, Josep
AU - Ransijn, Johannes
AU - Robinson, David
AU - Schmidt, Inger K.
AU - Smith, Andrew
AU - Tietema, Albert
AU - Dukes, Jeffrey S.
AU - Beier, Claus
AU - Emmett, Bridget
PY - 2017/3
Y1 - 2017/3
N2 - 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 a ssimilation(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 and Rs increased from drier to wetter sites. Our findings suggest that the above- and belowground C fluxes become decoupled, with no evidence of acclimation at a decadal timescale. aNPP and Rs especially differed in 3 their sensitivity to drought and warming, with belowground processes being more sensitive to environmental change.
AB - 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 a ssimilation(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 and Rs increased from drier to wetter sites. Our findings suggest that the above- and belowground C fluxes become decoupled, with no evidence of acclimation at a decadal timescale. aNPP and Rs especially differed in 3 their sensitivity to drought and warming, with belowground processes being more sensitive to environmental change.
UR - https://static-content.springer.com/esm/art%3A10.1038%2Fsrep43952/MediaObjects/41598_2017_BFsrep43952_MOESM21_ESM.pdf
U2 - 10.1038/srep43952
DO - 10.1038/srep43952
M3 - Article
VL - 7
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
M1 - 43952
ER -