Crested wheatgrass-cheatgrass seedling competition in a mixed-density design
Francis, M.G., Pyke, D.A., 1996, Crested wheatgrass-cheatgrass seedling competition in a mixed-density design: Journal of Range Management, v. 49, no. 5, p. 432-438.
David A Pyke
Biography
Education
Ph.D. Botany, 1983, Washington State University
M.S. Forest and Range Management, 1977, Washington State University
B.S. Range Management (Wildlife option), 1976, Washington State University
Specialty
Plant ecology, restoration ecology, monitoring and assessments of ecosystem status of rangelands (grassland, shrublands and savannas)
Research Interests
Population ecology of native and invasive plants in the Intermountain West. Monitoring protocols for ecosystem integrity on wild lands. Restoration ecology of native plants on disturbed and invaded lands.
Personal Interests
Skiing, Cycling, Baseball, Softball, Gardening, & Beer Brewing
Background
Former Assistant Center Director of FRESC 1996-1999
Science and Products
Year Published: 2007
Biotic soil crusts in relation to topography, cheatgrass, and fire in the Columbia Basin, Washington
We studied lichen and bryophyte soil crust communities in a large public grazing allotment within a sagebrush steppe ecosystem in which the biotic soil crusts are largely intact. The allotment had been rested from grazing for 12 years, but experienced an extensive series of wildfires. In the 350, 4 ?? 0.5 m plots, stratified by topographic...
Ponzetti, Jeanne; McCune, B.; Pyke, David A.Attribution: Forest and Rangeland Ecosystem Science Center, Ecosystems
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Biotic soil crusts in relation to topography, cheatgrass, and fire in the Columbia Basin, Washington; 2007; Article; Journal; Bryologist; Ponzetti, Jeanne; McCune, B.; Pyke, David A.
Year Published: 2007
Monitoring post-fire vegetation rehabilitation projects: A common approach for non-forested ecosystems
Emergency Stabilization and Rehabilitation (ES&R) and Burned Area Emergency Response (BAER) treatments are short-term, high-intensity treatments designed to mitigate the adverse effects of wildfire on public lands. The federal government expends significant resources implementing ES&R and BAER treatments after wildfires; however, recent...
Wirth, Troy A.; Pyke, David A.Attribution: Forest and Rangeland Ecosystem Science Center, Ecosystems
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Monitoring Post-Fire Vegetation Rehabilitation Projects: A Common Approach for Non-Forested Ecosystems; 2007; SIR; 2006-5048; Wirth, Troy A.; Pyke, David A.
Year Published: 2006
Multi-scale responses of soil stability and invasive plants to removal of non-native grazers from an arid conservation reserve
Disturbances and ecosystem recovery from disturbance both involve numerous processes that operate on multiple spatial and temporal scales. Few studies have investigated how gradients of disturbance intensity and ecosystem responses are distributed across multiple spatial resolutions and also how this relationship changes through time during...
Beever, Erik A.; Huso, Manuela M. P.; Pyke, David A.Attribution: Northern Rocky Mountain Science Center, Ecosystems
Year Published: 2005
Available nitrogen: A time-based study of manipulated resource islands
Spatial and temporal heterogeneity of available nitrogen are critical determinants of the distribution and abundance of plants and animals in ecosystems. Evidence for the resource island theory suggests that soils below tree and shrub canopies contain higher amounts of resources, including available nitrogen, than are present in interspace areas....
Stubbs, Michelle M.; Pyke, David A.Attribution: Forest and Rangeland Ecosystem Science Center, Ecosystems
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Available nitrogen: a time-based study of manipulated resource islands; 2005; Article; Journal; Plant and Soil; Stubbs, Michelle M.; Pyke, David A.
Year Published: 2005
Establishing native grasses in a big sagebrush-dominated site: an intermediate restoration step
Many semiarid rangelands in the Great Basin, U.S.A., are shifting dominance to woody species as a consequence of land degradation including intense livestock grazing and fire suppression. Whereas past rehabilitation efforts in Big sagebrush (Artemisia tridentata) steppes removed the shrub and added introduced forage grasses to successfully shift...
Huber-Sannwald, Elisabeth; Pyke, David A.Attribution: Forest and Rangeland Ecosystem Science Center, Ecosystems
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Establishing native grasses in a big sagebrush-dominated site: an intermediate restoration step; 2005; Article; Journal; Restoration Ecology; Huber-Sannwald, Elisabeth; Pyke, David A.
Year Published: 2005
Monitoring temporal change in riparian vegetation of Great Basin National Park
Disturbance in riparian areas of semiarid ecosystems involves complex interactions of pulsed hydrologic flows, herbivory, fire, climatic effects, and anthropogenic influences. We resampled riparian vegetation within ten 10-m × 100-m plots that were initially sampled in 1992 in 4 watersheds of the Snake Range, east central Nevada. Our finding...
Beever, Erik A.; Pyke, David A.; Chambers, Jeanne C.; Landau, Fred; Smith, S.D.Attribution: Northern Rocky Mountain Science Center, Forest and Rangeland Ecosystem Science Center, Ecosystems
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Monitoring temporal change in riparian vegetation of Great Basin National Park; 2005; Article; Journal; Western North American Naturalist; Beever, Erik A.; Pyke, David A.; Chambers, Jeanne C.; Landau, Fred; Smith, S. D.
Year Published: 2005
Plant invaders, global change and landscape restoration
Modifications in land uses, technology, transportation and biogeochemical cycles currently influence the spread of organisms by reducing the barriers that once restricted their movements. We provide an overview of the spatial and temporal extent for agents of environmental change (land and disturbance transformations, biogeochemical modifications...
Pyke, D.A.; Knick, S.T.Attribution: Forest and Rangeland Ecosystem Science Center, Ecosystems
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Plant invaders, global change and landscape restoration; 2005; Conference Paper; African Journal of Range and Forage Science; Pyke, D. A.; Knick, S. T.
Year Published: 2005
Short-term responses of desert soil and vegetation to removal of feral burros and domestic cattle (California)
Beever, Erik A.; Pyke, David A.Attribution: Northern Rocky Mountain Science Center, Forest and Rangeland Ecosystem Science Center, Ecosystems
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Short-term responses of desert soil and vegetation to removal of feral burros and domestic cattle (California); 2005; Article; Journal; Ecological Restoration; Beever, Erik A.; Pyke, David A.
Year Published: 2004
Integrated monitoring of hydrogeomorphic, vegetative, and edaphic conditions in riparian ecosystems of Great Basin National Park, Nevada
In semiarid regions such as the Great Basin, riparian areas function as oases of cooler and more stable microclimates, greater relative humidity, greater structural complexity, and a steady flow of water and nutrients relative to upland areas. These qualities make riparian areaʼs attractive not only to resident and migratory wildlife, but also to...
Beever, Erik A.; Pyke, D.A.Attribution: Forest and Rangeland Ecosystem Science Center, Northern Rocky Mountain Science Center, Ecosystems, Sage-grouse & Sagebrush Ecosystem
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Integrated monitoring of hydrogeomorphic, vegetative, and edaphic conditions in riparian ecosystems of Great Basin National Park, Nevada; 2004; SIR; 2004-5185; Beever, Erik A.; Pyke, D. A.
Year Published: 2004
Effects of invasive alien plants on fire regimes
Plant invasions are widely recognized as significant threats to biodiversity conservation worldwide. One way invasions can affect native ecosystems is by changing fuel properties, which can in turn affect fire behavior and, ultimately, alter fire regime characteristics such as frequency, intensity, extent, type, and seasonality of fire. If the...
Brooks, M.L.; D'Antonio, C. M.; Richardson, D.M.; DiTomaso, J.M.; Grace, J.B.; Hobbs, R.J.; Keeley, J. E.; Pellant, M.; Pyke, D.Attribution: Western Ecological Research Center, Forest and Rangeland Ecosystem Science Center, Ecosystems
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Effects of invasive alien plants on fire regimes; 2004; Article; Journal; BioScience; Brooks, M. L.; D'Antonio, C. M.; Richardson, D. M.; DiTomaso, J. M.; Grace, J. B.; Hobbs, R. J.; Keeley, J. E.; Pellant, M.; Pyke, D.
Year Published: 2004
Science for the changing Great Basin
The U.S. Geological Survey (USGS), with its multidisciplinary structure and role as a federal science organization, is well suited to provide integrated science in the Great Basin of the western United States. A research strategy developed by the USGS and collaborating partners addresses critical management issues in the basin, including invasive...
Beever, Erik; Pyke, David A.Attribution: Forest and Rangeland Ecosystem Science Center, Northern Rocky Mountain Science Center, Ecosystems, Sage-grouse & Sagebrush Ecosystem
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Science for the Changing Great Basin; 2004; FS; 2004-3071; Beever, Erik; Pyke, David A.
Year Published: 2003
Interactions of cattle grazing and climate change- hierarchical data analysis
No abstract available.
Clausnitzer, D.; Huso, Manuela M. P.; Pyke, David A.; Belnap, Jayne; Graham, T.B.; Sanford, R. L.; Phillips, S.L.Attribution: Forest and Rangeland Ecosystem Science Center, Ecosystems
Pre-USGS Publications
Introduction to the Sustaining Rangeland Ecosystems Symposium
Tanaka, J.A., Pyke, D.A., 1996, Introduction to the Sustaining Rangeland Ecosystems Symposium In Edge, W.D., Olson-Edge, S.L., eds., Proceedings of the Sustaining Rangeland Ecosystems Symposium: Special Report 953, Corvallis, OR, Oregon State University, Agricultural Experiment Station, p. 1-2.
Morphological plasticity following species-specific recognition and competition in two perennial grasses
Huber-Sannwald, E., Pyke, D.A., Caldwell, M.M., 1996, Morphological plasticity following species-specific recognition and competition in two perennial grasses: American Journal of Botany, v. 83, no. 7, p. 919-931.
Population diversity with special reference to rangeland plants
Pyke, D.A., 1995, Population diversity with special reference to rangeland plants In West, N.E., ed., Biodiversity of Rangelands: Logan, Utah, College of Natural Resources, Utah State University, p. 21-32.
Cheatgrass demography-establishment attributes, recruitment, ecotypes, and genetic variability
Pyke, D.A., Novak, S.J., 1994, Cheatgrass demography-establishment attributes, recruitment, ecotypes, and genetic variability: U.S. Department of Agriculture, Forest Service, Intermountain Research Station General Technical Report INT-GTR-313, p. 12-21.
Ecological significance of seed banks with special reference to alien annuals
Pyke, D.A., 1994, Ecological significance of seed banks with special reference to alien annuals: U.S. Department of Agriculture, Forest Service, General Technical Report INT-GTR-313, p. 197-201.
Successional theory and the desired plant community approach
Borman, M.M., Pyke, D.A., 1994, Successional theory and the desired plant community approach: Rangelands, v. 16, no. 2, p. 82-84.
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
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.
Statistical analysis of survival, and removal rate experiments
Pyke, D.A., Thompson, J.N., 1986, Statistical analysis of survival, and removal rate experiments: Ecology, no. 67, p. 240-245.