Journal article
Thermal optimality of net ecosystem exchange of carbon dioxide and underlying mechanisms
University of Oklahoma1
Monash University2
Dresden University of Technology3
University of British Columbia4
Swiss Federal Institute of Technology Zurich5
European Commission Joint Research Centre Institute6
University of Toledo7
Pennsylvania State University8
Department of Wind Energy, Technical University of Denmark9
Meteorology, Department of Wind Energy, Technical University of Denmark10
University of Wisconsin-Madison11
Beijing Normal University12
Edmund Mach Foundation13
University of Antwerp14
University of California at Berkeley15
Vrije Universiteit Amsterdam16
Oak Ridge National Laboratory17
University of South Dakota18
Centre for Ecology and Hydrology19
Hokkaido University20
United States Department of Agriculture21
Trinity College Dublin22
National Ecological Observatory Network23
University College Cork24
Northern Arizona University25
Johann Heinrich von Thunen Institute26
Trent University27
National Center for Atmospheric Research28
Chinese Academy of Sciences29
University of New Mexico30
INRAE31
Aarhus University32
Czech Academy of Sciences33
Oregon State University34
University of Florida35
National Research Council of Italy36
Agenzia Regionale per la Prevenzione e l'Ambiente dell'Emilia Romagna37
Alterra38
Harvard University39
North Carolina State University40
San Diego State University41
Poznań University of Life Sciences42
University of California at Davis43
Department of Chemical and Biochemical Engineering, Technical University of Denmark44
Agroscope45
Ecosystems Programme, Department of Chemical and Biochemical Engineering, Technical University of Denmark46
CNRS47
Southwest Watershed Research Center48
University of Sassari49
Montana State University50
Russian Academy of Sciences51
University of Helsinki52
University of Innsbruck53
Fudan University54
McMaster University55
Lund University56
University of Liege57
Climate Research Division58
...and 48 moreIt is well established that individual organisms can acclimate and adapt to temperature to optimize their functioning. However, thermal optimization of ecosystems, as an assemblage of organisms, has not been examined at broad spatial and temporal scales. Here, we compiled data from 169 globally distributed sites of eddy covariance and quantified the temperature response functions of net ecosystem exchange (NEE), an ecosystem‐level property, to determine whether NEE shows thermal optimality and to explore the underlying mechanisms.
We found that the temperature response of NEE followed a peak curve, with the optimum temperature (corresponding to the maximum magnitude of NEE) being positively correlated with annual mean temperature over years and across sites. Shifts of the optimum temperature of NEE were mostly a result of temperature acclimation of gross primary productivity (upward shift of optimum temperature) rather than changes in the temperature sensitivity of ecosystem respiration.
Ecosystem‐level thermal optimality is a newly revealed ecosystem property, presumably reflecting associated evolutionary adaptation of organisms within ecosystems, and has the potential to significantly regulate ecosystem–climate change feedbacks. The thermal optimality of NEE has implications for understanding fundamental properties of ecosystems in changing environments and benchmarking global models.
| Language: | English |
|---|---|
| Publisher: | Blackwell Publishing Ltd |
| Year: | 2012 |
| Pages: | 775-783 |
| ISSN: | 14698137 and 0028646x |
| Types: | Journal article |
| DOI: | 10.1111/j.1469-8137.2012.04095.x |
| ORCIDs: | 0000-0003-1622-2305 , Dellwik, Ebba and Pilegaard, Kim |
Climate change Optimum temperature SDG 13 - Climate Action Temperature acclimation Temperature adaptation Thermal optimality
ACCLIMATION Acclimatization CLIMATE CO2 FLUXES CYCLE FEEDBACK Carbon Dioxide Climate Change EUROPEAN FORESTS Ecosystem PHOTOSYNTHESIS PONDEROSA PINE Plants RESPONSESPlant Sciences Rain SOIL RESPIRATION Solar Energy TEMPERATURE-DEPENDENCE Temperature climate change optimum temperature temperature acclimation temperature adaptation thermal optimality
