Peatlands are the largest reservoirs of terrestrial carbon (C). In light of projected global warming, understanding energy and water balances are vital for developing restoration strategies to minimise C loss from degraded peatlands. We investigated the role of ecosystem physiology in shifts between climatic (evapotranspiration, air temperature, and vapour pressure deficit) and water limitation (soil moisture and water table depth) of gross primary production (GPP) in a restored peat bog in Vancouver, Canada.
We show that water limitation of GPP is caused by reduction in surface conductivity of water vapour. The unique causal analysis (empirical dynamic modelling framework) implied that these changes pushed the ecosystem productivity to be governed by soil moisture in 2019.
The codes, and data used for the analysis can be found here.
Funding
Dora Plus activity 1.2 “PhD student mobility” scholarship through European Regional Development Fund
Erasmus+ student mobility for PhD traineeship
The Estonian Research Council (grants PRG-352 and PRG2032)
European Commission through the HORIZON-WIDERA “Living Labs for Wetland Forest Research” Twinning project No 101079192
European Research Council (ERC) under the grant agreement No 101096403 (MLTOM23415R)
The European Regional Development Fund (Centre of Excellence EcolChange; grant number TK-131)
The European Regional Development Fund (Centre of Excellence AgroCropFuture; TK-200)
The Natural Environment Research Council [NERC grant reference number NE/X019071/1]
UK EO Climate Information Service (UKEO-CIS)
Natural Environment Research Council
Find out more...The National Centre for Earth Observation
Research equipment for this study is funded through research contracts between Metro Vancouver and UBC
Selected equipment was supported by the Canada Foundation for Innovation (Christen, Johnson, and Knox; project number 39738)
NSERC Discovery Grant (RGPIN-2019-04199)
NSERC Alliance Grant (ALLRP 555468-20)
