Report of Research and Proposal for Future Research, Presented to Glen Canyon National Recreation Area
Klopatek JM and Jeffries DL. 1987. Report of Research and Proposal for Future Research, Presented to Glen Canyon National Recreation Area. Tempe, AZ
This is a report of research conducted by Douglas L. Jeffries under the supervision of Dr. Jeffrey M. Klopatek from June 1984 until Jan 1987. Five sites dominated by blackbrush (Coleogyne ramosissima Torr.) were studied in the Kaiparowits Basin of southern utah and northern Arizona. Three sites had a variety of grazing pressures from light to very heavy, one site has had ten years of recovery from heavy grazing, and one site is a relict, ungrazed blackbrush ecosystem. Soils were composed of 87 to 99% sand with pH's between 8.1 and 8.9. The relict site had significantly more herbaceous vegetation cover (composed primarily of perennial grasses) and total cover than all other sites. The relict site also had significantly more shrub and cryptogamic cover than the moderately grazed, heavily grazed and recovering sites. The recovering site showed no significant differences than the heavily grazed site for any of the measured parameters.
- Type
- Published Report
- Authors
- Klopatek, Jeffrey; Jeffries, Douglas
- Date of Issue
- 1987-03-09
- Units
- GLCA
- Keywords
- Blackbrush (Coleogyne ramosissima), Communities, Cryptogamic Crusts, Kaiparowits Plateau (UT), Nitrogen (N), Plants, Soils, Vegetation