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@ARTICLE{Holzke:52392,
      author       = {Holzke, C. and Dindorf, T. and Kesselmeier, J. and Kuhn, U.
                      and Koppmann, R.},
      title        = {{T}erpene emissions from {E}uropean beech ({F}agus
                      sylvatica {L}.): {P}attern and emission behaviour over two
                      vegetation periods},
      journal      = {Journal of atmospheric chemistry},
      volume       = {55},
      issn         = {0167-7764},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {PreJuSER-52392},
      pages        = {81 - 102},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The source strength of volatile organic compounds (VOCs)
                      emitted by vegetation is of great interest for the
                      understanding of processes in atmospheric chemistry and
                      climate change. In this study terpene emissions from
                      branches of European beech (Fagus sylvatica L.) were studied
                      in a deciduous forest. Using the branch enclosure technique
                      changes in the emission pattern and the variation of
                      emission rates over the year were investigated over two
                      consecutive vegetation periods. More than 10 monoterpene
                      compounds were found in the emissions, among which sabinene
                      dominates. For most compounds the emission pattern changed
                      only slightly over the year. Interestingly, two compounds
                      tentatively identified as para-cymene and cis-ocimene showed
                      differences in the emission behaviour in late summer
                      compared to the other terpenes. In contrast to previous
                      studies our investigation characterise European beech as a
                      strong emitter. For the main compounds the emission rates
                      changed up to two orders of magnitude as a function of
                      temperature and light over the day. In general, highest
                      emission rates were observed in summer and lowest in fall. A
                      seasonality was characterized by a temperature independent
                      decline of emissions in late summer, resulting in changes of
                      the standard emission rate on the order of one magnitude. A
                      standard emission factor of up to 3.5 nmol m(-2)s(-1) for
                      the sum of measured terpenes was calculated. No emissions
                      were found in early spring even though leaves were fully
                      developed and temperature and light conditions were
                      moderate. The results underline the importance of
                      characterising the annual variation of the emission
                      behaviour. Especially for the up-scaling to global VOC
                      emissions, seasonal influences have to be considered to
                      achieve realistic emission inventories.},
      keywords     = {J (WoSType)},
      cin          = {ICG-II},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB48},
      pnm          = {Atmosphäre und Klima},
      pid          = {G:(DE-Juel1)FUEK406},
      shelfmark    = {Environmental Sciences / Meteorology $\&$ Atmospheric
                      Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000239960000005},
      doi          = {10.1007/s10874-006-9027-9},
      url          = {https://juser.fz-juelich.de/record/52392},
}