Rangeland Ecology & Management
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Displaying 101 - 150 of 317 results
- Library Collection RecordResults of a 1985 survey of California hardwood rangeland landowners were used to develop a multi-agency research and extension program known as the Integrated Hardwood Range Management Program. In…Publication Date 1997-07-01
- surveys
- land ownership
- conservation
- land management
- landowners
- land use
- Quercus
- California
- woodlands
- Library Collection RecordCattle have been used to control shrubs following timber harvesting in the Sierra Nevada of California, although their effectiveness varies between sites. Although cattle home ranges, habitat use,…Publication Date 1996-11-01
- coniferous forests
- telemetry
- riparian forests
- habitat selection
- brush control
- water availability
- diet
- California
- botanical composition
- beef cattle
- Library Collection RecordSince 1988, University of California Cooperative Extension short courses have been offered to 362 California ranchers and interested participants. The purpose was to assist private rangeland owners…Publication Date 1996-01-01
- short courses
- U.S. Cooperative Extension Service
- ranching
- California
- range management
- grazing
- beef cattle
- Library Collection RecordAttorneys for the Timbisha Shoshone Tribe of Death Valley are appealing directly to the Secretary of the Interior, Bruce Babbit, to halt the Briggs mine in eastern California, two miles from Death…
- California
- mining
- Native Americans
- Library Collection RecordSustaining rangeland ecosystems is as much a social process as an ecological one. It requires application of many of the same principles as those used in planning for wildlife reserves, but the…Publication Date 1996-03-01
- zoning
- dairy farming
- open spaces
- conservation easements
- conservation
- ranching
- sustainability
- California
- rangelands
- Library Collection RecordWe examined the diets of reintroduced tule elk (Cervus elaphus nannodes Merriam) and resident Columbian black-tailed deer (Odocoileus hemionus columbianus Richardson) inhabiting the coastal prairie-…Publication Date 1995-07-01
- coastal plant communities
- dietary overlap
- animal competition
- grasslands
- Cervus elaphus
- feces
- species differences
- Odocoileus hemionus
- California
- nitrogen content
- seasonal variation
- botanical composition
- forage
- feeding preferences
- Library Collection RecordThere is considerable interest in riparian zones in the western United States, yet little information is available on the autecology of plant species that dominate these areas. We measured gas…Publication Date 1995-03-01
- Carex nebrascensis
- salix lemonii
- population ecology
- rooting
- leaf area
- Salix
- soil water potential
- water potential
- soil temperature
- xylem
- Carex
- riparian buffers
- root systems
- air temperature
- rain
- photosynthesis
- gas exchange
- California
- biomass
- drought
- seasonal variation
- Library Collection RecordAn increase in continuous fine fuels promoted by the expansion of aggressive annual exotic grasses in the Intermountain West has altered the region's fire regimes, with both ecologic and…Publication Date 1995-01-01
- fire danger
- Rocky Mountain region
- mathematical models
- prediction
- fire ecology
- rain
- Bromus tectorum
- Oregon
- California
- biomass
- range management
- climatic factors
- Library Collection RecordThe canopy of Quercus douglasii H. & A. (blue oak) has been variously reported to enhance or suppress understory production. The effects of canopy removal have been reported only for the northern…Publication Date 1994-03-01
- production
- microenvironments
- plant interaction
- understory
- Quercus douglasii
- rain
- California
- biomass
- botanical composition
- canopy
- forage
- Library Collection RecordThe state and transition model and the ball and cup analogy are used to organize the vegetation dynamics knowledge base for California's annual-dominated Mediterranean grasslands. These models…Publication Date 1992-09-01
- simulation models
- annual grasslands
- plant ecology
- population dynamics
- fires
- fire effects
- Mediterranean climate
- natural grasslands
- plant communities
- California
- range management
- rangelands
- grazing
- Library Collection RecordCattle grazing has been suggested as a principal cause for poor oak recruitment in California's hardwood rangelands. This study evaluated the effects of stock density and season of grazing on…Publication Date 1992-09-01
- crop damage
- recruitment
- Quercus douglasii
- seedlings
- stocking rate
- winter
- spring
- summer
- grazing intensity
- browsing damage
- California
- woodlands
- cattle
- range management
- seasonal variation
- grazing
- Library Collection RecordThe importance of evaluating multiple resource values on rangelands is demonstrated in this study of California's 3.0 million hectares of oak-covered (Quercus spp.) hardwood rangelands.…Publication Date 1993-03-01
- hardwoods
- livestock enterprises
- econometric models
- multiple use
- economic analysis
- hunting
- fuelwood
- Quercus douglasii
- productivity
- California
- range management
- rangelands
- Library Collection RecordConcerns for the future of California's oak-woodlands have intensified the need to better understand how different overstory species affect herbage standing crops and species frequencies. Data…Publication Date 1991-07-01
- topography
- understory
- woodland grasslands
- site factors
- Quercus douglasii
- Quercus wislizeni
- Pinus sabiniana
- annual grasslands
- ceanothus cuneatus
- herbage standing crop
- plant ecology
- species diversity
- ecological succession
- biomass production
- plant communities
- California
- botanical composition
- forage
- Library Collection RecordFour potential cattle grazing systems on summer range in the Sierra Nevada are compared in terms of deer harvest, number of hunters attracted, and the net economic value of hunting. Research on deer…Publication Date 1991-07-01
- net economic benefit
- national forests
- carrying capacity
- population density
- economic analysis
- hunting
- multiple land use
- pastures
- rotational grazing
- grazing intensity
- Odocoileus hemionus
- California
- cattle
- range management
- rangelands
- Library Collection RecordSeasonal grazing trials, conducted over 3 years at the Hopland Field Station in Mendocino County, Calif., tested the effects of 2 seasonal grazing strategies on within- and between-year production…Publication Date 1992-01-01
- Quercus douglasii
- annual grasslands
- grazing trials
- savannas
- selective grazing
- California
- sheep
- seasonal variation
- botanical composition
- grazing
- Library Collection RecordIn the central California region of annual rangeland, herbage production beneath blue oak (Quercus douglasii Hook & Arn.) canopies is greater and production beneath the canopies of interior live…Publication Date 1991-05-01
- cation exchange capacity
- edaphic factors
- soil organic matter
- soil density
- soil properties
- Quercus douglasii
- Quercus wislizeni
- Pinus sabiniana
- soil fertility
- pastures
- growth rate
- California
- rangelands
- canopy
- bulk density
- forage
- Library Collection RecordTo better understand shoot development and population dynamics of Nebraska sedge (Carex nebraskensis Dewey), a valuable mountain meadow forage species, 766 shoots were tagged and studied at Tule…Publication Date 1992-03-01
- spring and winter habit
- winter hardiness
- plant development
- life cycle
- Carex
- shoots
- population dynamics
- California
- phenology
- pasture plants
- Library Collection RecordFactors responsible for poor recruitment of blue oak (Quercus douglasii H. & A.) and valley oak (Q. lobata Nee) need to be determined on California hardwood rangelands so that management…Publication Date 1992-01-01
- shading
- Quercus lobata
- recruitment
- Quercus
- Quercus douglasii
- seedling emergence
- stand establishment
- seedlings
- California
- rangelands
- Library Collection RecordSocial science research is an important tool for guiding development of education programs for owners of private rangelands. California oak woodland, a productive and extensive range type in…Publication Date 1990-03-01
- extension education
- attitudes and opinions
- private ownership
- surveys
- land management
- landowners
- land use
- Quercus
- California
- woodlands
- rangelands
- Library Collection RecordThere is increasing interest in understanding the role of management on the current lack of blue oak (Quercus douglasii H. & A.) recruitment on California foothill rangelands. Age structure…Publication Date 1990-01-01
- tree and stand measurements
- age size relationships
- tree classes
- size
- tree age
- age structure
- recruitment
- Quercus douglasii
- prediction
- population dynamics
- California
- range management
- Library Collection RecordHarvesting trees for firewood in the oak hardwood rangelands of the western Sierra Nevada foothills creates slash that may be burned to improve livestock forage production or piled into brushpiles…Publication Date 1991-03-01
- economic analysis
- habitats
- hunting
- Quercus
- multiple land use
- fuelwood
- Callipepla californica
- brushwood
- slash
- pastures
- California
- cattle
- wildlife management
- range management
- rangelands
- grazing
- forage
- Library Collection RecordLittle has been done to evaluate the mid-winter crude protein, phosphorus, and in vitro digestibility of subspecies and accessions of rubber rabbitbrush (Chrysothamnus nauseosus ssp.) For those few…Publication Date 1990-03-01
- geographical races
- variation
- Chrysothamnus nauseosus
- winter
- phosphorus
- crude protein
- California
- in vitro digestibility
- Nevada
- nutritive value
- Utah
- Arizona
- forage
- Library Collection RecordIn recent years there has been an increasing emphasis on reestablishment of woody vegetation in degraded riparian zones. In this study we evaluated the influence of grazing and selected site factors…Publication Date 1991-01-01
- shoot cuttings
- salix geyeriana
- crop establishment
- Salix
- water table
- site factors
- riparian buffers
- mortality
- soil water content
- grazing intensity
- plant communities
- California
- cattle
- grazing
- Library Collection RecordA rising plate meter (RPM) and ocular estimation of herbage fresh weight (OCES) were compared as double sampling methods to measure herbage dry weight (DWT) in a mountain meadow grazed by cattle (0,…Publication Date 1989-01-01
- mountains
- mountain areas
- meadows
- measurements
- highlands
- estimation
- California
- biomass
- range management
- forage
- Library Collection RecordManagement of legume-improved annual range forage is made difficult by the rapid declines in nutritive quality and animal gains as the plants mature. An improved ability to predict occurrence of the…Publication Date 1989-09-01
- Trifolium hirtum
- liveweight gain
- steers
- California
- application rates
- fertilizer
- Library Collection RecordSeasonal herbaceous production was measured beneath tree canopies of blue oak (Quercus douglasii Hook & Arn.), interior live oak (Quercus wislizenii DC), and digger pine (Pinus sabiniana Dougl…Publication Date 1989-07-01
- seasonal development
- dry matter accumulation
- woodland grasslands
- Quercus douglasii
- Quercus wislizeni
- Pinus sabiniana
- growth rate
- California
- dry environmental conditions
- drought
- forage
- water stress
- Library Collection RecordThe need for forage plants that are productive in, and adapted to, semiarid conditions prompted us to examine the range and independence of assortment of nutritional qualities of wild stands of…Publication Date 1988-03-01
- Salsola
- water soluble compounds
- acid detergent fiber
- Southwestern United States
- physicochemical properties
- nitrates
- oxalates
- lignin
- crude protein
- California
- semiarid zones
- in vitro digestibility
- Texas
- Nevada
- nutritive value
- New Mexico
- Arizona
- forage
- dry matter
- Library Collection RecordOn California's winter annual rangelands precipitation controls the beginning and end of the growing season while temperature largely controls seasonal growth rates within the growing season.…Publication Date 1988-05-01
- weather patterns
- livestock feeding
- factors of production
- yield factors
- correlation
- seasonal growth
- heat sums
- forage crops
- liveweight gain
- sampling
- California
- temperature
- rangelands
- Library Collection RecordThe use of anti-predator electric fences for reducing predation on sheep was investigated by interviewing 101 sheep producers in the Pacific Northwest. Significant reductions in sheep losses to…Publication Date 1988-05-01
- sheep farming
- dogs
- electric fences
- farm surveys
- coyotes
- predator control
- efficiency
- Washington
- Oregon
- California
- Library Collection RecordVolume, crown diameter, and number of twigs were all highly correlated with biomass of individual shrubs of bitterbrush (Purshia tridentata (Pursh) DC), greenleaf manzanita (Arctostaphylos patula…Publication Date 1988-01-01
- volume
- biomass determination
- prediction
- estimation
- woody plants
- California
- rangelands
- dry matter
- Library Collection RecordThe rising plate meter (RPM) was used to determine forage production and livestock utilization in a rotational grazing system on improved annual pasture in California. Prior to rotating livestock,…Publication Date 1986-09-01
- meters
- growth analysis
- digestible energy
- rotational grazing
- California
- range management
- livestock
- forage
- Library Collection RecordInfluences of grazing intensity on species composition and herbage production of grass-woodland and improved grassland subtypes of annual range were evaluated over a 5-year period in coastal northern…Publication Date 1987-03-01
- grassland utilization
- grasslands
- responses
- yields
- productivity
- grazing intensity
- California
- sheep
- botanical composition
- rangelands
- grazing
- forage
- Library Collection RecordAn 8-year (1961-1968) study at the San Joaquin Experimental Range, in the Sierra Nevada foothills in central California, compared continuous, repeated seasonal, and rotated seasonal grazing on native…Publication Date 1986-11-01
- annuals
- grasslands
- liveweight gain
- responses
- grazing experiments
- reproductive performance
- California
- cattle
- rangelands
- grazing
- Library Collection RecordMule deer (Odocoileus hemionus) in the Sierra Nevada rely heavily on mountain whitethorn (Ceanothus cordulatus, Kell.) and deerbursh (C. integerrimus, H&A) as summer forage. In this study,…Publication Date 1986-11-01
- digestible energy
- Ceanothus cordulatus
- Ceanothus integerrimus
- photoperiod
- mixed conifers
- digestibility
- crude protein
- Odocoileus hemionus
- California
- seasonal variation
- nutritive value
- forage
- Library Collection RecordWe illustrate the use of life tables and survival analysis for evaluating data on livestock losses. The techniques are used to compare the rate of coyote (Canis latrans) predation on single and twin…Publication Date 1987-03-01
- twins
- life tables
- coyotes
- lambs
- probability analysis
- predation
- mortality
- California
- Library Collection RecordA real-time system for recording grazing behavior in the field is described. A NEC 8201a portable computer was programmed to allow the incidence, duration, and sequence of behaviors to be recorded.…Publication Date 1987-05-01
- computers
- portable instruments
- recording
- data collection
- computer techniques
- California
- grazing behavior
- cattle
- Library Collection RecordSeasonal diets of native Columbian black-tailed deer (Odocoileus hemionus columbianus) and exotic axis deer (Axis axis axis), fallow deer (Dama dama dama), and cattle (Bos taurus) on Point Reyes…Publication Date 1985-09-01
- coasts
- coastal plant communities
- feeding habits
- rumen contents
- California
- Cervidae
- competition
- cattle
- botanical composition
- rangelands
- grazing
- Library Collection RecordSeasonal diets of native Columbian black-tailed deer (Odocoileus hemionus columbianus) and exotic axis deer (Axis axis axis), fallow deer (Dama dama dama), and cattle (Bos taurus) on Point Reyes…Publication Date 1985-11-01
- California
- diets
- Cervidae
- Cervus dama
- Odocoileus
- competition
- axis axis
- cattle
- seasonal variation
- feeding preferences
- Library Collection RecordChanges in botanical composition and productivity of total herbage and 14 categories of annual range plants caused by elemental sulfur fertilization, range site, and precipitation were studied. Total…Publication Date 1985-03-01
- sulfur fertilizers
- grasslands
- productivity
- pastures
- California
- botanical composition
- Library Collection RecordNutritional composition of sheep diets from a serpentine barrens range site was determined at various seasons and stages of plant growth and compared to diets from 3 other annual range sites. Sheep…Publication Date 1986-01-01
- serpentine soils
- nutrient contents of plants
- digestibility
- California
- sheep
- diet studies
- grazing behavior
- rangelands
- Library Collection RecordPredation at the University of California Hopland Field Station was evaluated for an 11-year period beginning in 1973. Of those lambs placed on range, an average of 2.7% were killed each year by…Publication Date 1985-09-01
- coasts
- losses
- predators
- California
- sheep
- rangelands
- Library Collection RecordA 6-year study was conducted to evaluate the response of California annual range to triennial applications of sulfur only and sulfur plus nitrogen fertilizer. Range response was evaluated in terms of…Publication Date 1986-03-01
- seasonal growth
- sulfur fertilizers
- liveweight gain
- fertilizer application
- nitrogen fertilizers
- stocking rate
- beef production
- California
- crop yield
- rangelands
- grazing
- beef cattle
- forage
- Library Collection RecordThe objective of this study was to evaluate the use of supplement blocks on body weight change, blood parameters, and lambing performance of ewes grazing dry, annual grasses during the summer prior…Publication Date 1985-07-01
- Targhee
- supplementary feeds
- ewes
- grazing experiments
- dry seasons
- California
- rangelands
- grasses
- Library Collection RecordFactors possibly associated with high (over 5%) and low (0-5%) predation intensities were compared among 95 sheep or goat producers in 5 states to determine if important differences were evident…Publication Date 1984-09-01
- losses
- predation
- ranching
- Idaho
- Oregon
- California
- sheep
- goats
- Texas
- North Dakota
- Library Collection RecordSeasonal variation in total nonstructural carbohydrate (TNC) levels in rhizomes and shoots of Nebraska sedge (Carex nebraskensis Dewey) suggest that grazing too early or too late or both may be…Publication Date 1984-09-01
- carbohydrates
- Carex
- California
- seasonal variation
- Library Collection RecordMeasurements obtained between 1968 and 1976 indicate the influence of climatic factors and soil characteristics upon soil moisture and production of perennial vegetation in the northern Mojave Desert…Publication Date 1984-01-01
- deserts
- California
- Nevada
- Library Collection RecordDuring a study of grazing in the Great Basin, using the grazed plant method used for measuring utilization, we noticed a bias in the step point technique used to select plants. Subsequent…Publication Date 1983-09-01
- Oregon
- California
- Library Collection RecordSulfur deficiencies are widespread on the rangeland soils of California and the application of sulfur-bearing fertilizers has been widely recognized as a promising range improvement on these soils.…Publication Date 1983-05-01
- California
- Trifolium subterraneum
- Library Collection RecordThe larvae of the range crane fly (Tipula simplex) are responsible for extensive damage to rangeland of the central valley of California, but the damage occurs infrequently in years when there are…Publication Date 1983-09-01
- California
- Library Collection RecordThis site focuses on research and outreach on the diverse managed ecosystems that comprise California rangelands. We study and promote management to support the multitude of services that…Publication Date 2010
- watershed management
- rangelands
- water quality
- grazing management
- grazing
- Cryptosporidium
- California
- E. coli
- ecosystem services