Isotope values of leaf tissues, leaf waxes, and xylem waters across elevational gradients

Specimens of Acer macrophyllum, Quercus lobata, Quercus kelloggii, Quercus douglasii, Alnus rubra, Pinus sabineana, Pinus ponderosa, and Pinus jeffreyi were collected during the 2006-growing season. In addition to plant specimens, soil and water samples were collected from plant collection locations along the transect.

Here, carbon and hydrogen isotope values of normal-alkanes (n-alkanes), carbon and nitrogen isotope values of bulk leaf material, as well as hydrogen and oxygen isotope values of xylem water are presented from eight co-occurring tree species from ninety-three localities. Carbon and hydrogen isotope values of n-alkanes extracted from soils and hydrogen and oxygen isotope values of surface waters are also presented. Leaf wax n-alkanes were extracted, isolated, identified, and quantified following Tipple and Pagani, 2013 (Geochimica et Cosmochimica Acta, 111, 64-77).