title: Carbon, oxygen and hydrogen isotope abundances inStylites reflect its unique physiology.
abstract: Natural abundances of oxygen-18, carbon-14, carbon-13 and deuterium were measured inStylites andicola, a terrestrial vascular plant lacking stomates, and two terrestrial plant species having stomates that grew nearby. No substantial differences in oxygen-18 and carbon-13 abundances were observed among the three species. The deuterium concentration inStylites was much higher than in the other species, confirming a previous report of CAM inStylites. Stylites was depleted in carbon-14 relative to the present day atmosphere, consistent with the proposal that it fixes CO2derived from decomposing peat.
authors.affiliation: Department of Earth and Space Sciences, University of California, 90024, Los Angeles, CA, USA.
authors.forename: Leonel da S L
authors.initials: LD
authors.lastname: Sternberg
authors.affiliation: Department of Earth and Space Sciences, University of California, 90024, Los Angeles, CA, USA.
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Deniro
authors.affiliation: Institute of Geophysics and Planetary Physics, University of California, 90024, Los Angeles, CA, USA.
authors.forename: David
authors.initials: D
authors.lastname: McJunkin
authors.affiliation: Institute of Geophysics and Planetary Physics, University of California, 90024, Los Angeles, CA, USA.
authors.forename: Rainer
authors.initials: R
authors.lastname: Berger
authors.affiliation: Department of Biology, Occidental College, 90041, Los Angeles, CA, USA.
authors.forename: Jon E
authors.initials: JE
authors.lastname: Keeley