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Interactions of Cattle Grazing and Climate on Semi-arid Ecosystem Function
Completed
Rangelands are found on all continents, covering up to 30-50% of the earth’s surface. Most rangelands in the Intermountain West are water-limited ecosystems. The climate of this region is generally semi-arid and receives precipitation mainly during the winter. Global circulation models often predict this region may soon receive moisture from summer monsoons. Resource managers have stressed the need to predict changes to ecosystems that might occur with shifts in global circulation patterns. The effects of climate shifts on livestock-grazed land may result in interactions that will accelerate or cancel the effects predicted by climate alone. This project examines the effects various climate and grazing scenarios may have on physical, chemical, and biological ecosystem components. Results from these experimental field manipulation studies help determine the potential impacts of selected policy decisions regarding livestock grazing in the Intermountain West.
Pyke, D.A., Knick, S.T., 2003, Plant invaders, global change, and landscape restoration: African Journal of Range and Forage, p. 278-288. [Highlight] [FullText] Catalog No: 1221 Clausnitzer, D., Huso, M., Pyke, D.A., Belnap, J., Graham, T.B., Sanford, R.L., Phillips, S.L., 2003, Interactions of cattle grazing and climate change- hierarchical data analysis In Allsopp, N., Walker, N., eds., VIIth International Rangeland Conference Proceedings, 26 July-1 August 2003, Durban, South Africa: {PlaceOfPublication}, {BookPublisher}, p. 1062-1064. [FullText] Catalog No: 1298 Kauffman, J.B., Pyke, D.A., 2001, Range ecology, global livestock influences In Levin, S., ed., Encyclopedia of Biodiversity: Vol. 5, San Diego, CA, Academic Press, p. 33-52. [FullText] Catalog No: 818 Pellant, M., Shaver, P.L., Pyke, D.A., Herrick, J.E., 2000, Interpreting Indicators of Rangeland Health-Version 3 (NOTE- Superceded by Version 4 available at http-//fresc.usgs.gov/products/papers/1385_Pellant.pdf): Bureau of Land Management, National Science and Technology Center Technical Reference 1734-6, p. 118. [FullText] Catalog No: 825 Grammon, A.A., 1997, Comparative Seedling Growth of Diffuse Knapweed and Bluebunch Wheatgrass under Altered Moisture and Temperature Regimes--M.S. thesiss: Corvallis, OR, Oregon State University, 63 p. Catalog No: 971
Lucash, M.S., 1996, Growth and Physiological Responses of Sitantion hystrix, Artemisia tridentata ssp. Wyomingensis, and Stipa thurberiana to Elevated CO2- Interactions with Soil Temperature and Water Stress--M.S. thesis: Corvallis, OR, Oregon State University, 71 p. Catalog No: 970
Pyke, D.A., Borman, M.M., 1993, Problem analysis for the Vegetation Diversity Project- A research and demonstration program to restore and maintain native plant diversity on deteriorated rangelands of the Great Basin and Columbia Plateau: US, Bureau of Land Management, Oregon State Office Technical Note OR-936-01, p. 100. [FullText] Catalog No: 505
Pyke, David A. - Supervisory Research Ecologist
Phone: 541-750-7334
Email: david_a_pyke@usgs.gov
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