Enhanced ozone exposure of european beech (Fagus sylvatica) stimulates nitrogen mobilization from leaf litter and nitrogen accumulation in the soil
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Enhanced ozone exposure of european beech (Fagus sylvatica) stimulates nitrogen mobilization from leaf litter and nitrogen accumulation in the soil. / Stoelken, G.; Pritsch, K.; Simon, J.; Mueller, C. W.; Grams, T. E.E.; Esperschuetz, J.; Gayler, S.; Buegger, F.; Brueggemann, N.; Meier, R.; Zeller, B.; Winkler, J. B.; Rennenberg, H.
In: Plant Biosystems, Vol. 144, No. 3, 15.10.2010, p. 537-546.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Enhanced ozone exposure of european beech (Fagus sylvatica) stimulates nitrogen mobilization from leaf litter and nitrogen accumulation in the soil
AU - Stoelken, G.
AU - Pritsch, K.
AU - Simon, J.
AU - Mueller, C. W.
AU - Grams, T. E.E.
AU - Esperschuetz, J.
AU - Gayler, S.
AU - Buegger, F.
AU - Brueggemann, N.
AU - Meier, R.
AU - Zeller, B.
AU - Winkler, J. B.
AU - Rennenberg, H.
PY - 2010/10/15
Y1 - 2010/10/15
N2 - In a lysimeter study with young beech trees, the effects of elevated ozone concentration on the decomposition and fate of nitrogen in 15N-labeled leaf litter were analyzed after one growing season. Nitrogen in the litter was dominated by a relatively inert, residual fraction, but easily decomposable nitrogen was present in substantial amounts. Nitrogen loss was significantly higher at twice-ambient ozone which was largely attributed to an enhanced mobilization of residual nitrogen. Enhanced mobilization of nitrogen from litter at twice-ambient ozone exposure resulted in additional 15N incorporation into the soil down to 30 cm depth. Only 0.41-0.62% of the nitrogen in the litter was incorporated into plant material at both ozone concentrations. Twice-ambient ozone exposure changed the distribution of the nitrogen taken up from litter inside the beech trees in favor of the shoot, where it may have been used in biosynthetic processes required for defense reactions.
AB - In a lysimeter study with young beech trees, the effects of elevated ozone concentration on the decomposition and fate of nitrogen in 15N-labeled leaf litter were analyzed after one growing season. Nitrogen in the litter was dominated by a relatively inert, residual fraction, but easily decomposable nitrogen was present in substantial amounts. Nitrogen loss was significantly higher at twice-ambient ozone which was largely attributed to an enhanced mobilization of residual nitrogen. Enhanced mobilization of nitrogen from litter at twice-ambient ozone exposure resulted in additional 15N incorporation into the soil down to 30 cm depth. Only 0.41-0.62% of the nitrogen in the litter was incorporated into plant material at both ozone concentrations. Twice-ambient ozone exposure changed the distribution of the nitrogen taken up from litter inside the beech trees in favor of the shoot, where it may have been used in biosynthetic processes required for defense reactions.
KW - Free-air ozone enrichment
KW - Leaf litter
KW - Lysimeter study
KW - Nitrogen cycling
KW - Nitrogen mobilization
KW - Nitrogen uptake
UR - http://www.scopus.com/inward/record.url?scp=77957800573&partnerID=8YFLogxK
U2 - 10.1080/11263500903429346
DO - 10.1080/11263500903429346
M3 - Journal article
AN - SCOPUS:77957800573
VL - 144
SP - 537
EP - 546
JO - Plant Biosystems
JF - Plant Biosystems
SN - 1126-3504
IS - 3
ER -
ID: 239162685