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@ARTICLE{Popp:828066,
author = {Popp, Denny and von Gillhaussen, Philipp and Weidlich,
Emanuela W. A. and Sträuber, Heike and Harms, Hauke and
Temperton, Vicky},
title = {{M}ethane yield of biomass from extensive grassland is
affected by compositional changes induced by order of
arrival},
journal = {Global change biology / Bioenergy},
volume = {9},
number = {10},
issn = {1757-1693},
address = {Oxford},
publisher = {Wiley-Blackwell},
reportid = {FZJ-2017-02071},
pages = {1555–1562},
year = {2017},
abstract = {Low-input grassland biomass from marginal and other
slightly more fertile sites can be used for energy
production without competing with food or fodder production.
The effect of grassland diversity on methane yield has
received some attention, but we do not know how community
assembly may affect methane yield from grassland biomass.
However, methane yields determine the potential economic
value of a bioenergy substrate. Hence, a better
understanding of how plant community assembly affects
methane yield would be important. We measured biomass
production and methane yield in the second year of a
grassland field experiment which manipulated the order of
arrival of different plant functional groups (forbs, grasses
or legumes sown first and all sown simultaneously) and sown
diversity (9 vs. 21 species). The order of arrival of the
plant functional groups significantly determined the
relative dominance of each group which in turn mainly
explained the variance in aboveground biomass production.
Differences in area-specific methane yields were driven by
differences in biomass production and which plant functional
groups dominated a plot. When grasses were sown first,
legumes and grasses codominated a plot and the highest
area-specific methane yield was obtained. Overall, the
results indicate that altering the order of arrival affected
the community functional and species composition (and hence
methane yields) much more than sown diversity. Our study
shows that a combined use of positive biodiversity effects
and guided plant community assembly may be able to optimize
methane yields under field conditions. This may allow a
guided, sustainable, and lucrative use of grassland biomass
for biogas production in the future.},
cin = {IBG-2},
ddc = {570},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {582 - Plant Science (POF3-582)},
pid = {G:(DE-HGF)POF3-582},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000411013500003},
doi = {10.1111/gcbb.12441},
url = {https://juser.fz-juelich.de/record/828066},
}