Cite as:
Obermeier, W.; Lehnert, L.; Kammann, C.; M&uuml;ller, C.; Gr&uuml;nhage, L.; Luterbacher, J.; Erbs, M.; Moser, G.; Seibert, R.; Yuan, N. &amp; Bendix, J. (2017): <b>Reduced CO2 fertilization effect in temperate C3 grasslands under more extreme weather conditions</b>. <i>Nature Climate Change</i> <b>7</b>(2), 137-141.

Resource Description

Title: Reduced CO2 fertilization effect in temperate C3 grasslands under more extreme weather conditions
FOR816dw ID: 282
Publication Date: 2017-02-01
License and Usage Rights: Due to Nature policies, the article is not publicly available. The article file can be obtained upon request.
Resource Owner(s):
Individual: Wolfgang Obermeier
Individual: Lukas Lehnert
Individual: Claudia Kammann
Individual: Christoph Müller
Individual: Ludger Grünhage
Individual: Jürg Luterbacher
Individual: Martin Erbs
Individual: Gerald Moser
Individual: Ruben Seibert
Individual: Naiming Yuan
Individual: Jörg Bendix
The increase in atmospheric greenhouse gas concentrations from anthropogenic activities is the major driver of recent global climate change1. The stimulation of plant photosynthesis due to rising atmospheric carbon dioxide concentrations ([CO2]) is widely assumed to increase the net primary productivity (NPP) of C3 plants—the CO2 fertilization effect (CFE). However, the magnitude and persistence of the CFE under future climates, including more frequent weather extremes, are controversial. Here we use data from 16 years of temperate grassland grown under ‘free-air carbon dioxide enrichment’ conditions to show that the CFE on above-ground biomass is strongest under local average environmental conditions. The observed CFE was reduced or disappeared under wetter, drier and/or hotter conditions when the forcing variable exceeded its intermediate regime. This is in contrast to predictions of an increased CO2 fertilization effect under drier and warmer conditions. Such extreme weather conditions are projected to occur more intensely and frequently under future climate scenarios. Consequently, current biogeochemical models might overestimate the future NPP sink capacity of temperate C3 grasslands and hence underestimate future atmospheric [CO2] increase.
Additional Infos:
The dataset can be found within the LCRS repository and the CRAN R package "msaFACE".
| biomass | climate change | Climate-change impacts | CO2 fertilization | Grassland ecology | Ecophysiology |
Literature type specific fields:
Journal: Nature Climate Change
Volume: 7
Issue: 2
Page Range: 137-141
Publisher: Springer Nature
Metadata Provider:
Individual: Wolfgang Obermeier
Online Distribution:
Download File:

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