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@ARTICLE{Oelmann:56229,
author = {Oelmann, Y. and Kreutziger, Y. and Temperton, V. M. and
Buchmann, N. and Roscher, Ch. and Schumacher, J. and
Schulze, E.-D. and Weisser, W. W. and Wilcke, W.},
title = {{N}itrogen and phosphorus budgets in experimental
grasslands of variable diversity},
journal = {Journal of environmental quality},
volume = {36},
issn = {0047-2425},
address = {Madison, Wis.},
publisher = {ASA [u.a.]},
reportid = {PreJuSER-56229},
pages = {396 - 407},
year = {2007},
note = {Record converted from VDB: 12.11.2012},
abstract = {Previous research has shown that plant diversity influences
N and P cycles. However, the effect of plant diversity on
complete ecosystem N and P budgets has not yet been
assessed. For 20 plots of artificially established grassland
mixtures differing in plant diversity, we determined N and P
inputs by bulk and dry deposition and N and P losses by
mowing (and subsequent removal of the biomass) and leaching
from April 2003 to March 2004. Total deposition of N and P
was 2.3 +/- 0.1 and 0.2 +/- 0.01 g m(-2) yr(-1),
respectively. Mowing was the main N and P loss. The net N
and P budgets were negative (-6.3 +/- 1.1 g N and -1.9 +/-
0.2 g P m(-2) yr(-1)). For N, this included a conservative
estimate of atmospheric N(2) fixation. Nitrogen losses as
N(2)O were expected to be small at our study site (<0.05 g
m(-2) yr(-1)). Legumes increased the removal of N with the
harvest and decreased leaching of NH(4)-N and dissolved
organic nitrogen (DON) from the canopy. Reduced roughness of
grass-containing mixtures decreased dry deposition of N and
P. Total dissolved P and NO(3)-N leaching from the canopy
increased in the presence of grasses attributable to the
decreased N and P demand of grass-containing mixtures.
Species richness did not have an effect on any of the
studied fluxes. Our results demonstrate that the N and P
fluxes in managed grassland are modified by the presence or
absence of particular functional plant groups and are mainly
driven by the management.},
keywords = {Agriculture: methods / Biodiversity / Biomass / Fabaceae:
growth $\&$ development / Nitrates: analysis / Nitrogen:
analysis / Phosphorus: analysis / Poaceae: growth $\&$
development / Quaternary Ammonium Compounds: analysis / Rain
/ Soil: analysis / Nitrates (NLM Chemicals) / Quaternary
Ammonium Compounds (NLM Chemicals) / Soil (NLM Chemicals) /
Phosphorus (NLM Chemicals) / Nitrogen (NLM Chemicals) / J
(WoSType)},
cin = {ICG-3},
ddc = {333.7},
cid = {I:(DE-Juel1)ICG-3-20090406},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Environmental Sciences},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:17255627},
UT = {WOS:000244979300007},
doi = {10.2134/jeq2006.0217},
url = {https://juser.fz-juelich.de/record/56229},
}