 |
| Titel |
The emission factor of volatile isoprenoids: stress, acclimation, and developmental responses |
| VerfasserIn |
Ü. Niinemets, A. Arneth, U. Kuhn, R. K. Monson, J. Peñuelas, M. Staudt |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1726-4170
|
| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 7, no. 7 ; Nr. 7, no. 7 (2010-07-20), S.2203-2223 |
| Datensatznummer |
250004899
|
| Publikation (Nr.) |
 copernicus.org/bg-7-2203-2010.pdf |
|
|
|
|
|
| Zusammenfassung |
| The rate of constitutive isoprenoid emissions from plants is driven by plant
emission capacity under specified environmental conditions (ES, the
emission factor) and by responsiveness of the emissions to instantaneous
variations in environment. In models of isoprenoid emission, ES has been
often considered as intrinsic species-specific constant invariable in time
and space. Here we analyze the variations in species-specific values of
ES under field conditions focusing on abiotic stresses, past
environmental conditions and developmental processes. The reviewed studies
highlight strong stress-driven, adaptive (previous temperature and light
environment and growth CO2 concentration) and developmental (leaf age)
variations in ES values operating at medium to long time scales. These
biological factors can alter species-specific ES values by more than an
order of magnitude. While the majority of models based on early concepts
still ignore these important sources of variation, recent models are
including some of the medium- to long-term controls. However, conceptually
different strategies are being used for incorporation of these longer-term
controls with important practical implications for parameterization and
application of these models. This analysis emphasizes the need to include
more biological realism in the isoprenoid emission models and also
highlights the gaps in knowledge that require further experimental work to
reduce the model uncertainties associated with biological sources of
variation. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|