Owen, Susan M. and Boissard, C. and Hagenlocher, B. and Hewitt, CN (1998) Field studies of isoprene emissions from vegetation in the north-western Mediterranean region. Journal of Geophysical Research - Space Physics, 103 (D19). pp. 25499-25511. ISSN 0148-0227Full text not available from this repository.
During the Biogenic Emissions in the Mediterranean Area (BEMA) project field campaigns (1993 - 1997), 40 native Mediterranean plant species were screened for emissions of isoprene and monoterpenes using a branch enclosure sampling method with subsequent gas chromatographic-flame ionization detector (GC-FID) and GC-mass selective detector (MS) analysis. Thirteen species emitted more than 0.5 μg (C) g−1 dw h−1 isoprene at 30°C and 1000 μmol m−2 s−1 photosynthetically active radiation (PAR), of which nine species emitted more than 20 μg (C) g−1 dw h−1. Emissions of isoprene were strongly correlated with temperature and PAR, and were reasonably well predicted by existing algorithms. There was little intraspecies and day to day variation in base emission rates. In general, median base emission rates were higher in summer compared to autumn for most species. Significant difference in aggregated habitat base emission rates was found between dunes, garrigue, woodland, and riverside sample sites. Although considerable unexplained variability in base emission rates remains to be explored, first estimates of base emission rates for Mediterranean shrublands are presented here.
|Journal or Publication Title:||Journal of Geophysical Research - Space Physics|
|Subjects:||G Geography. Anthropology. Recreation > GE Environmental Sciences|
|Departments:||Faculty of Science and Technology > Lancaster Environment Centre|
|Deposited On:||10 Feb 2009 14:53|
|Last Modified:||26 Jul 2012 15:52|
Actions (login required)