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Andresen, L.C.; Yuan, N.; Seibert, R.; Moser, G.; Kammann, C.; Luterbacher, J.; Erbs, M. &amp; M&uuml;ller, C. (2018): <b>Biomass responses in a temperate European grassland through 17 years of elevated CO2</b>. <i>Global Change Biology</i> <b>24</b>, 3875-3885<br>DOI: <a href="http://dx.doi.org/10.1111/gcb.13705" target="_blank">http://dx.doi.org/10.1111/gcb.13705</a>.

Resource Description

Title: Biomass responses in a temperate European grassland through 17 years of elevated CO2
F2Fdw ID: 133
Publication Date: 2018-08-14
License and Usage Rights: FACE2FACE data user agreement. http://face2face.center/dataagreement.do
Resource Owner(s):
Individual: Andresen, Louise C.
Contact:
Individual: Yuan, Naiming
Contact:
Individual: Seibert, Ruben
Contact:
Individual: Moser, Gerald
Contact:
Individual: Kammann, Claudia
Contact:
Individual: Luterbacher, Jürg
Contact:
Individual: Erbs, Martin
Contact:
Individual: Müller, Christoph
Contact:
Abstract:
Future increase in atmospheric CO2 concentrations will potentially enhance grassland<br/> biomass production and shift the functional group composition with consequences<br/> for ecosystem functioning. In the “GiFACE” experiment (Giessen Free Air Carbon<br/> dioxide Enrichment), fertilized grassland plots were fumigated with elevated CO2<br/> (eCO2) year-round during daylight hours since 1998, at a level of +20% relative to<br/> ambient concentrations (in 1998, aCO2 was 364 ppm and eCO2 399 ppm; in 2014,<br/> aCO2 was 397 ppm and eCO2 518 ppm). Harvests were conducted twice annually<br/> through 23 years including 17 years with eCO2 (1998 to 2014). Biomass consisted of<br/> C3 grasses and forbs, with a small proportion of legumes. The total aboveground biomass<br/> (TAB) was significantly increased under eCO2 (p = .045 and .025, at first and<br/> second harvest). The dominant plant functional group grasses responded positively at<br/> the start, but for forbs, the effect of eCO2 started out as a negative response. The<br/> increase in TAB in response to eCO2 was approximately 15% during the period from<br/> 2006 to 2014, suggesting that there was no attenuation of eCO2 effects over time,<br/> tentatively a consequence of the fertilization management. Biomass and soil moisture<br/> responses were closely linked. The soil moisture surplus (c. 3%) in eCO2 manifested<br/> in the latter years was associated with a positive biomass response of both functional<br/> groups. The direction of the biomass response of the functional group forbs changed<br/> over the experimental duration, intensified by extreme weather conditions, pointing<br/> to the need of long-term field studies for obtaining reliable responses of perennial<br/> ecosystems to eCO2 and as a basis for model development.
Keywords:
| climate change | soil moisture | forbs | frost | Giessen free air carbon dioxide enrichment | grasses | long-term response | Free air carbon dioxide enrichment |
Literature type specific fields:
ARTICLE
Journal: Global Change Biology
Volume: 24
Page Range: 3875-3885
Metadata Provider:
Individual: Toelle, Merja
Contact:
Online Distribution:
Download File: http://face2face.center/publications.do?citid=133

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