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Browsing Department of Rangeland Ecology and Management by Title

Now showing items 4-23 of 66

Biology and control of barb goatgrass (Aegilops triuncialis L.)

Peters, Amy (1994-03-21)

This research examined the biology of barb goatgrass (Aegilops triuncialis L.) a weedy annual grass that is invading the rangelands of California. Germination and root growth characteristics of barb goatgrass were compar ...
Biomass production and water use of common plant species in Owens Valley, California, USA

Evans, Tracie L. (2011-06-20)

This study evaluated biomass production, water-use efficiency (WUE), biomass allocation, and water use characteristics of common plant species in Owens Valley, California, USA. The species studied were the grasses Distic ...
Community analysis of the Wyoming big sagebrush alliance and functional role of Wyoming big sagebrush

Davies, Kirk W. (2005-09-19)

This study consisted of two research projects in the Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis (Beetle & A. Young) S.L. Welsh) alliance, the most extensive of the big sagebrush complex in the Interm ...
Comparison of spatial distribution and resource use by Spanish and British breed cattle in northeastern Oregon prairie ecosystems

Sheehy, Cody M. (2007-08-13)

We studied the distribution and habitat selection differences between Spanish breed (Corriente and Longhorn mix) and British breed cattle (Angus, Hereford). This study was located on the Zumwalt prairie during the spri ...
A culturally appropriate, partnership-based natural resource education program on the Warm Springs Indian Reservation

Vergun, Judith Richardson (1993-06-02)

A natural resource science education program for members of the Warm Springs Indian Reservation was designed and developed in partnership with tribal members. The intent of the project was to create a culturally releva ...
Describing the thermal regimes of two northeastern Oregon streams

Raven, Sonja E. (2004-05-03)
Detecting medusahead (Taeniatherum caput-medusae (L.) Nevski) using high frequency, sequential, globally positioned digital images

Ndzeidze, Stephen Koghan (2011-06-09)

Invasive plant species are expanding and transforming vegetative communities across Oregon and throughout the United States. Over the past three decades remote sensing, geographic information system (GIS), and Global Po ...
Distribution and behavior of cattle grazing riparian pastures

Wilson, Marie A. (Marie Annette) (2011-06-16)

One second GPS collars were deployed on cattle in three different pastures at three separate times during the year. In each riparian pasture the vegetative communities and stream bank edge were digitally mapped using low ...
Ecological effects of post-wildfire management activities (salvage-logging and grass-seeding) on vegetation composition, diversity, biomass, and growth and survival of Pinus ponderosa and Purshia tridentata

Sexton, Timothy Ogden (1998-01-30)

Salvage-logging and artificial seeding of grass following wildfire are common practices in coniferous forests of the western United States, yet few studies have quantified the ecological effects of these post-fire activ ...
Ecological effects of spring and fall prescribed burning on basin big sagebrush : Idaho fescue--bluebunch wheatgrass communities

Sapsis, David B. (1990-03-01)

The vegetation response of spring and fall prescribed fires in basin big sagebrush (Artemisia tridentata subsp. tridentata Nutt.)/Idaho fescue (Festuca idahoensis Elmer)--bluebunch wheatgrass (Agropyron spicatum Pursh. ( ...
The ecology of riparian ecosystems of Northeast Oregon : shrub recovery at Meadow Creek and the structure and biomass of headwater Upper Grande Ronde ecosystems

Case, Richard L. (1995-07-06)

Riparian ecosystems play numerous and essential roles related to the quality and flow of water, and food/habitat for fish, and varieties of wildlife. Due to lateral and linear linkages throughout the landscape, these zo ...
Effects of plant community characteristics on insect abundance : implications for sage-grouse brood-rearing habitat

Ersch, Erica A. (2009-04-01)

A causative factor in declining greater sage-grouse (Centrocercus urophasianus) populations is reduced annual recruitment due to poor habitat quality. Sage-grouse population decline is concurrent with a decline in ...
Effects of prescribed fire and silvicultural activities on fuel mass and nitrogen redistribution in Pinus ponderosa ecosystems of central Oregon

Shea, Ronald W. (1993-06-28)
The effects of vegetation type and grazing system on the performance, diet and intake of yearling cattle

Holechek, Jerry (1979)
Elevation, thermal environment, and stream temperatures on headwater streams in northeastern Oregon

Meays, Cynthia L. (2000-03-27)

A case study examining the relationship between stream temperatures and the thermal environment through which streams flow was conducted on the headwaters of 4 tributaries of the Burnt River (Barney, Elk, Greenhorn, an ...
Emergence, survival and reproduction of three species of forbs important to sage grouse nutrition in response to fire, microsite and method of establishment

Wirth, Troy A. (2000-02-29)

Since settlement of the Intermountain West, sage grouse abundance and productivity has declined and their range has decreased. The decline of sage grouse populations is primarily due to permanent loss and degradation o ...
Establishing native plants in crested wheatgrass stands using successional management

Fansler, Valerie A. (2007-11-08)

Crested wheatgrass (Agropyron cristatum (L.) Gaertn.) is a nonindigenous perennial grass that was introduced to North America to improve the condition of degraded rangelands. It has proven to be a successful revegetati ...
An evaluation of understory vegetation dynamics, ecosystem resilience and state and transition ecological theory in an eastern Oregon ponderosa pine forest

Carr, Craig A. (2007-10-16)

Relatively recent increases in ponderosa pine abundance have effected unprecedented changes to ecosystem structure and function. Efforts to restore ponderosa pine systems are often focused on the manipulation of tree s ...
Exotic annual grass invasion alters fuel amounts, continuity and moisture content

Davies, Kirk W.; Nafus, Aleta M. (CSIRO Publishing, 2012-10-03)

Many exotic annual grasses are believed to increase wildfire frequency to the detriment of native vegetation by increasing fine fuels and thus, creating a grass-fire cycle. However, information on differences in fuel ch ...
Fire ecology and management in plant communities of Malheur National Wildlife Refuge, southeastern Oregon

Young, Richard P. (1986-07-08)

This research assesses prescribed burning as a habitat management technique in wetlands and associated upland communities of Malheur National Wildlife Refuge, southeastern Oregon. Experimental burns were conducted to ...