Journal Article

FZJ-2023-01900

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Rising water-use efficiency in European grasslands is driven by increased primary production

Poppe Terán, C. (Corresponding author)FZJ* ; Naz, B. S.FZJ* ; Graf, A.FZJ* ; Qu, Y.FZJ* ; Hendricks Franssen, H.-J.FZJ* ; Baatz, R. ; Ciais, P. ; Vereecken, H.FZJ*

2023
Springer Nature London

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Please use a persistent id in citations: http://hdl.handle.net/2128/34372  doi:10.1038/s43247-023-00757-x

Abstract: Water-use efficiency is the amount of carbon assimilated per water used by an ecosystem and a key indicator of ecosystem functioning, but its variability in response to climate change and droughts is not thoroughly understood. Here, we investigated trends, drought response and drivers of three water-use efficiency indices from 1995–2018 in Europe with remote sensing data that considered long-term environmental effects. We show that inherent water-use efficiency decreased by −4.2% in Central Europe, exhibiting threatened ecosystem functioning. In European grasslands it increased by +24.2%, by regulated transpiration and increased carbon assimilation. Further, we highlight modulation of water-use efficiency drought response by hydro-climate and the importance of adaptive canopy conductance on ecosystem function. Our results imply that decoupling carbon assimilation from canopy conductance and efficient water management strategies could make the difference between threatened and well-coping ecosystems with ongoing climate change, and provide important insights for land surface model development.

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Contributing Institute(s):

1. Agrosphäre (IBG-3)

Research Program(s):

1. 2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217) (POF4-217)
2. eLTER PLUS - European long-term ecosystem, critical zone and socio-ecological systems research infrastructure PLUS (871128) (871128)

Appears in the scientific report 2023

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Database coverage:
; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Agriculture, Biology and Environmental Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; IF >= 5 ; JCR ; SCOPUS ; Web of Science Core Collection

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