Format

Send to

Choose Destination
Nature. 2002 Jan 3;415(6867):38.

Atmospheric CO2 from fossil plant cuticles.

Author information

1
Forschungsstellle für Paläobotanik, Geologisch-Paläontogisches Institut, Westfälische Wilhelms-Universität, Münster, Germany.

Abstract

Plants respond to changes in atmospheric carbon dioxide levels by regulating the number of stomata in their leaves. In his reconstruction of a continuous, 300-million-year record of atmospheric CO2, Retallack bases his curve on stomatal counts of fossil plant cuticles taken from published micrographs. However, the preservation of cuticles from Permian times is generally too fragmentary for the stomatal index to be reliably determined, the micrographs used could have biased the results, and there are important errors in the supplementary data - all of which cast doubt on the Permian part of Retallack's record.

PMID:
11780108
DOI:
10.1038/415038a
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Nature Publishing Group
Loading ...
Support Center