Brad Schultz

Brad Schultz
University of Nevada, Reno | UNR · Cooperative Extension, Northern Area

MS Rangeland Ecology and Management

About

78
Publications
6,312
Reads
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320
Citations
Citations since 2016
10 Research Items
180 Citations
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2016201720182019202020212022010203040
2016201720182019202020212022010203040
2016201720182019202020212022010203040
Additional affiliations
April 2001 - present
University of Nevada, Reno
Position
  • Extension Educator

Publications

Publications (78)
Article
Full-text available
Curlleaf mahogany is an important browse species for mule deer in the mountain brush zone of the Intermountain West. Past research on increasing browse availability of curlleaf mahogany has been inconclusive. This appeared to be directly related to limited understanding of community and population structure and dynamics. To obtain information on th...
Article
Full-text available
It is obvious that the diverse array of wildlife species using sagebrush habitats has a similarly wide range of habitat requirements. Vegetation management for biological diversity on a landscape scale should take these diverse habitat requirements into consideration. Management for any one species may or may not provide the habitat requirements fo...
Conference Paper
Full-text available
Large tracts of the western rangelands grazed by livestock are public lands administered by the Bureau of Land Management or the United States Forest Service. For livestock grazing to be authorized, these two Federal land management agencies often must evaluate the effects of livestock on the public lands they administer, through the NEPA (National...
Article
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Management of areas invaded by cheatgrass (Bromus tectorum) continues to be one of the greatest challenges for US Great Basin ecosystems. Targeted cattle grazing in the fall and winter has shown positive results as a management tool to reduce dormant fine fuel biomass within cheatgrass-invaded areas, but management of targeted grazing within large...
Article
Full-text available
Reevaluating assumptions about the ecology and management of sagebrush and salt desert shrub systems in the Great Basin and Intermountain West is a proper role for science. These are complex rangeland ecosystems, and our management applications need to account for this complexity. Understanding and reckoning this complexity is vital to the future e...
Article
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Cheatgrass (Bromus tectorum L.) seedlings suffer mortality if they do not occupy safe sites that provide establishment requirements. Previous research demonstrated that fall cattle grazing has strong potential for reducing invasive annual grass species dominance in winter-dominated precipitation areas of the Intermountain West. Fall cattle grazing...
Article
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On the Ground • There are now over 130,000 head of wild horses and burros in the Bureau of Land Management program. • Management tools in the original authorizations (Wild Horse and Burro Act; Public Rangelands Improvement Act) have been inhibited or banned by subsequent appropriation riders. • The original framework for horse and burro management...
Article
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• Over 400,000 km² of the Intermountain West is colonized by cheatgrass and other annual grasses.• Planning and management actions designed to foster perennial grass health throughout the region have never addressed how annual grasses would respond.• For decades, the most significant landscape-level management approach toward invasive annual grasse...
Article
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Shrub recruitment in arid and semiarid regions often occurs in pulses controlled by specific weather events. Previous research suggested that Wyoming sagebrush in Wyoming is no exception. We examined four species/subspecies of sagebrush in Nevada, in 2009 and 2010, to discover if evidence of recruitment pulses was contained in the annual growth-rin...
Article
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Fire kills Wyoming big sagebrush (Artemisia tridentata Nutt. ssp. wyomingensis Beetle & Young) and promotes cheatgrass (Bromus tectorum L.), a highly flammable and invasive annual in sagebrush communities with compromised resistance. To focus management on resistance and resilience of Wyoming big sagebrush communities with varying species compositi...
Article
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Many Wyoming big sagebrush (Artemisia tridentata Nutt. ssp. wyomingensis) communities are invaded by exotic annuals, especially cheatgrass (Bromus tectorum L.), promoting larger and more frequent wildfires. Mowing sagebrush can reduce fire risk. To identify community features favoring regeneration of native perennials over exotic annuals, we compar...
Poster
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Drought in the Great Basin must be separated into at least two types: hydrologic or surface water drought and soil moisture drought during the spring to early summer growing season. Hydrologic drought typically occurs when snow pack is low and/or diminishes before the typical spring runoff period. Soil moisture drought affects vegetation growth, no...
Article
Full-text available
A perennial pepperweed (Lepidium latifolium) community with a residual component of creeping wildrye (Leymus triticoides) was mechanically or chemically mowed and the regrowth treated with three different herbicides individually or as tank mixes. Creeping wildrye that was mechanically mowed when at the boot stage tended to have less cover and lower...
Article
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Cattle grazed a cheatgrass-dominated pasture during the fall dormant period for four years (2006-2009) and were provided a protein nutrient supplement to improve their distribution, uptake of dry feed and production performance. Cheatgrass standing crop was reduced by 43 percent to 80 percent each year, and cattle weight and body condition score in...
Article
Full-text available
Forage kochia (Bassia prostrata L.) has been used extensively by grazing animals in Central Asia. Forage kochia was introduced into the U.S.A. in 1966 from a Stavropol Botanical Gardens (USSR) planting, and released as a cultivar (Immigrant) in 1984. It has been included in fire and rangeland rehabilitation seed mixes and planted on at least 200,00...
Article
Full-text available
Wildfire is a major concern in the Intermountain West. Fuels management can lower the potential for negative wildfire effects. Cheatgrass (Bromus tectorum L.), a nonnative annual grass, invasion has resulted in a buildup of highly flammable fine fuels that promote frequent wildfire. Removal of cheatgrass standing crop through targeted, prescriptive...
Article
Full-text available
Longer term grazing rest has occurred or been proposed in large portions of the sagebrush steppe based on the assumption that it will improve ecosystem properties. However, information regarding the influence of longer term rest from grazing is limited and has not been summarized. We synthesized the scientific literature on long-term rest in the sa...
Article
Full-text available
Wildfire is a major concern in the Intermountain West. Fuels management can lower the potential for negative wildfire effects. Cheatgrass (Bromus tectorum L.), a nonnative annual grass, invasion has resulted in a buildup of highly flammable fine fuels that promote frequent wildfire. Removal of cheatgrass standing crop through targeted, prescriptive...
Article
Full-text available
Since 1961, The Nevada Youth Range Camp (NYRC) has provided a week-long camping and instructional experience for high school-age youth from across Nevada and occasionally Northeastern California. Nevada Youth Range Camp goals focus on relationships between people and rangeland. Campers learn that land managers need information about plants, wildlif...
Article
Full-text available
We measured the response of perennial pepperweed ( Lepidium latifolium) canopy cover and stem numbers to 30 treatment combinations that included physical or chemical mowing, and application of a systemic herbicide to the regrowth of perennial pepperweed. Mowing treatment, regrowth herbicide treatment, and their interaction each influenced the respo...
Article
Until recently, most contemporary ecologists have ignored or diminished anecdotal historical accounts and anthropologists' reports about aboriginal fire in the Great Basin. Literature review shows that Indians practiced regular use of fire for many purposes, including the obvious reasons of increasing the availability of desired plants, maintaining...
Article
Full-text available
Perennial pepperweed (Lepidium latifolium L.) is a deep-rooted, perennial herbaceous weed that spreads from both seed and creeping roots capable of sprouting new shoots. Previous work demonstrated that perennial pepperweed seedlings are much easier to control than mature plants that have been established for many years. An unanswered question is: d...
Article
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This paper demonstrates a new method called progressive discrimination (PD) for mapping an individual spectral class within an image. Given training data for a target, PD iteratively samples nontarget image pixels using a collapsing distance threshold within the space of an evolving discriminant function. This has the effect of progressively isolat...
Article
Full-text available
An educational bulletin that describes the threats presented by Medusahead, the plant's growth characteristics
Conference Paper
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Cooperative permittee monitoring (CPM) is embraced by US Forest Service and Bureau of Land Management at the national level and the livestock industry at the organizational level through the Public Lands Council. Memorandums of Understanding between these federal agencies and the Public Lands Council provide the basis for developing and implementin...
Conference Paper
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For almost four years, the University of Nevada Cooperative Extension has led a team of educators, combining science and common sense to teach a " Range Management School " (RMS) curriculum to agricultural producers and land managers across rural Nevada. Other teaching partners include the Bureau `and the Nevada ranching industry. The curriculum in...
Article
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Strategically, winter feeding alfalfa hay in conjunction with grass hays and energy supplements is often an economically sound practice for beef producers. Alfalfa is typically the cheapest feed supplement in late summer and early fall when grazing cows in their mid-trimester of pregnancy on low quality forages. During most years, excellent quality...
Technical Report
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In 2007, a committee of University of Nevada Cooperative Extension (UNCE) faculty was formed to identify program evaluation expertise within University of Nevada, Reno (UNR), ascertain professional development program evaluation topics, and compile resources associated with program evaluation that could be used by UNCE faculty and staff. The overar...
Article
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The state of Nevada initiated a statewide planning process for sage-grouse in August 2000. The initial planning team of 28 members developed a conservation strategy focused around the development of six local (but multi-county) conservation plans that would be merged into one statewide plan. The development of the local plans began in November 2001...
Article
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Educational bulletin that provides information about how weeds spread across a ranch, the importance of weed prevention to reduce overall costs of operation, and some general actions that ranchers can implement to reduce the risk of a large infestation of noxious weeds.
Article
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Since settlement by Euro-Americans, many changes have occurred on the Great Basin landscape. Examining land-use in the context of history provides a reference point for land managers. An increasing number of scientists and bioregional historians have recently indicated that active vegetation management of landscapes, particularly where wildland fir...
Article
Full-text available
Tordon® is an effective herbicide for control of leafy spurge in Paradise Valley, but one application is insufficient to achieve long-term control. Plateau® is effective as a follow-up treatment on leafy spurge when good top kill is achieved from Tordon®. Additional work is needed to determine if the same result can be achieved with other herbicide...
Article
Full-text available
The application of Plateau® herbicide in late October provided good control of Russian knapweed on deep soils in Paradise Valley. Follow-up treatments are necessary to control remnant plants. There was excellent control of hoary cress rosettes located on the treatment plot. Great Basin wildrye and rhizomatous wheatgrasses were not adversely affecte...
Article
Full-text available
It is obvious that the diverse array of wildlife species using sagebrush habitats have a similarly wide range of habitat requirements. Vegetation management for biological diversity (“biodiversity”) on a landscape scale should take these diverse habitat requirements into consideration. Management for any one species may or may not provide the habit...
Article
Full-text available
Perennial pepperweed (Lepidium latifolium L.) is a deep-rooted, perennial herbaceous weed that spreads from both seed and creeping roots capable of sprouting new shoots. In north-central Nevada, the drawdown of Chimney Dam Reservoir in the spring of 2007 facilitated the establishment of tens-of-thousands of perennial pepperweed seedlings on several...
Article
Vegetated wetlands at Owens Dry Lake, California, are embedded in a large arid region. The wetlands initially established when Owens Lake desiccated in the early 1900s, and largely exist below the historic shoreline, due to ground-water discharge. MSS satellite imagery was used to measure the coverage of wetlands on five dates from 1977 through 199...
Chapter
Full-text available
Review paper about the effects of disturbance on forest and rangelands and the response of the carbon and nitrogen cycles. For rangelands the focus is carbon inputs and grazing influences, plant succession and root biomass, and carbon-microbe interactions. The paper looks at both true grasslands and the sagebrush steppe region of western North Amer...
Article
Data regarding grazing utilization in the western United States are typically compiled within administrative boundaries (e.g. allotment, pasture). For large areas, an assumption of uniform distribution is seldom valid. Previous studies show that vegetation type, degree of slope, and distance from water largely determine the distribution of livestoc...
Article
Full-text available
This study analyzed spatial location patterns of Cercocarpus ledifolius Nutt. (curlleaf mountain mahogany) plants, classified as current-year seedling, established seedling, juvenile, and immature individuals, at a central Nevada study site. Most current-year seedlings were located in mahogany stands in which large, mature individuals had the great...
Conference Paper
Full-text available
EG&G Energy Measurements initiated a study in 1991 to determine the effect a prolonged drought had on vegetation structure and composition at Yucca Mountain, Nevada. A substantial die-off apparently occurred in the low-elevation black-brush (Coleogyne ramosissima) association; only 46% of the plant crowns present in 1991 were alive. The creosote/bu...
Conference Paper
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The US Department of Energy (DOE) is required by law and other regulatory requirements to reclaim disturbances created by site characterization activities at Yucca Mountain. Because of the difficulty of reclaiming arid areas and the lack of site specific information on successful reclamation techniques and procedures, the DOE has developed a compre...
Article
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Size-density-age relationships in curlleaf mountain mahogany communities were studied in 25 study plots, each 30 × 30 m, in western and central Nevada. The influence of total vegetation cover (site potential) and relative mahogany cover (mahogany dominance) on the observed size-density-age relationships was investigated. A positive linear relations...
Article
According to the Nuclear Waste Policy Act of 1982 (as amended in 1987), the US Department of Energy (DOE) must study and characterize Yucca Mountain as a potential site for long-term underground storage of high-level nuclear waste. Part of the overall site characterization program is to monitor potential impacts on the biological resources at Yucca...
Article
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The US Department of Energy (DOE) is characterizing Yucca Mountain Nevada, as a potential site for long-term underground storage of high-level nuclear waste. DOE is committed to reclaim all lands disturbed by the project, and return them to a stable ecological state, with a composition and productivity similar to predisturbance conditions. A study...
Article
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Little information is available on how desert plant communities that are dominated by perennial species respond to normal and above normal precipitation following prolonged drought. Intuitively, one would expect total canopy cover to increase. Whether a concomitant increase in the density of perennial species also occurs is unknown. Even less is kn...
Article
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Desert plant communities contain many perennial plant species that are well adapted to arid environments; therefore, one would intuitively believe that perennial desert species readily survive drought conditions. Abundant research on plant-soil-water relationships in North American deserts has shown that many species can maintain water uptake and g...