Trace Element Cycling in Grand Canyon National Park
Hoppe S, Foust RD, Mcdaniel P, Cline D, Witzeman S, Pierotti D, Hamor S, Rominger JM, Cotera A. Trace Element Cycling in Grand Canyon National Park. Flagstaff, AZ
Thirteen sites in the Grand Canyon National Park have been studied in an effort to define the variables that affect natural trace element levels in Gutierrezia sarothrae (snakeweed). The plant density was measured at each site and the vegetation was classified according to the scheme of Brown and Lowe (1974). Samples of Gutierrezia sarothrae, water and soil were collected at each site and analyzed for major anions and cations and the trace elements of zinc, iron, copper and manganese. The chemical data was then analyzed to determine statistically significant correlations between trace element levels in the sample of Gutierrezia sarothrae and local geological, hydrological and soil parameters. The sites chosen for this study include: Hance, Cottonwood, Pipe, Garden, Horn, Salt, Monument, Hermit and Boucher Creeks from the South Rim and Bright Angel, Tapeats, Thunder and Deer Creeks from the North Rim.
- Type
- Published Report
- Authors
- Hoppe, Steven; Foust, Richard; Mcdaniel, Pattie; Cline, David; Witzeman, Stewart; Pierotti, David; Hamor, Susan; Rominger, James; Cotera, Augustus
- Units
- GRCA
- Keywords
- Biology, Chemical Composition, Chemistry, Geology, Hydrology, Lithology, NPSRecord, Plants, Resource Management, snakeweed (Gutierrezia), Trace Elements, Vegetation