Connotea
CiteULike
del.ico.us
BibSonomyAbstract
On the relationship between stomatal characters and atmospheric CO2
Department of Biology, Duke University, Durham, NC, USA
Department of Biology, Duke University, Durham, NC, USA
USDA-ARS, Temple, TX, USA
Department of Biological Sciences, University of Nevada, Las Vegas, NV, USA
Oak Ridge National Laboratory, Oak Ridge, TN, USA
Department of Biology, Duke University, Durham, NC, USA
Nicholas School of the Environment and Earth Sciences, Duke University, Durham, NC, USA
Leaf stomatal characters influence the response of terrestrial evapotranspiration to climate change and are used as proxies for the reconstruction of past atmospheric [CO2]. We examined the phenotypic response of stomatal index (SI), density (SD) and aperture (AP) to rising atmospheric CO2 in 15 species after four years exposure to a field CO2 gradient (200 to 550 μmol mol−1 atmospheric [CO2]) or at three Free Air CO2 Enrichment (FACE) sites. Along the CO2 gradient, SI and SD showed no evidence of a decline to increasing [CO2], while AP decreased slightly. There was no significant change in SI, SD or AP with CO2 across FACE experiments. Without evolutionary changes, SI and SD may not respond to atmospheric [CO2] in the field and are unlikely to decrease in a future high CO2 world.
Received 19 May 2003; accepted 5 August 2003; published 4 October 2003.
Citation: (2003), On the relationship between stomatal characters and atmospheric CO2, Geophys. Res. Lett., 30(19), 1983, doi:10.1029/2003GL017775.
Cited By