Rangeland Ecology & Management
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- Library Collection RecordIngestion of small amounts of condensed tannin (CT) by ruminants can produce valuable outcomes such as improved nitrogen use and reduced bloating, methane output, and gastrointestinal parasitism.…Publication Date 2010-03-01
- condensed tannins
- livestock
- water intake
- Library Collection RecordFuel loading information is important for prescribed fire planning, evaluating wildfire risk, and understanding fire effects in grassland. Yet fuel loads in grasslands often go unmeasured because of…Publication Date 2011-01-01
- fire
- fuel load
- grasslands
- photo board
- techniques
- Library Collection RecordAnderson larkspur (Delphinium andersonii A. Gray) is a toxic plant responsible for cattle death losses in the western United States. The objectives of the present study were to determine when cattle…Publication Date 2011-11-01
- alkaloids
- diet
- larkspur
- livestock
- poisonous plants
- Library Collection RecordGrazing management has focused largely on promoting vegetation homogeneity through uniform distribution of grazing to minimize area in a pasture that is either heavily disturbed or undisturbed. An…Publication Date 2008-01-01
- ecosystem management
- equilibrium
- grasslands
- grazing
- heterogeneity
- landscape ecology
- patch dynamics
- plant-animal interactions
- rangelands
- Library Collection RecordCheatgrass (Bromus tectorum L.) is an invasive annual grass that creates near-homogenous stands in areas throughout the Intermountain sagebrush steppe and challenges successful native plant…Publication Date 2008-01-01
- cheatgrass
- clipping
- grazing
- livestock
- native plant restoration
- weed control
- Library Collection RecordIngestion of small amounts of condensed tannin (CT) by ruminants can prevent bloat, improve nitrogen retention, and reduce excretion of urea, a precursor of ammonia and the greenhouse gas nitrous…Publication Date 2008-05-01
- livestock
- pollution reduction
- quebracho tannin
- Library Collection RecordGovernment agencies are subject to increasing public scrutiny of land management practices. Consequently, rigorous, yet efficient, monitoring protocols are needed to provide defensible quantitative…Publication Date 2008-07-01
- grasslands
- observer error
- plant canopy cover
- point-frequency model
- vegetation monitoring
- visual estimates
- Library Collection RecordRangelands account for almost half of the earth’s land surface and may play an important role in the global carbon (C) cycle. We studied net ecosystem exchange (NEE) of C on eight North American…Publication Date 2008-09-01
- carbon flux
- grasslands
- sequestration
- shrub steppe
- Library Collection RecordRunoff and sediment yield from rangelands are extremely important variables that affect productivity, but are difficult to quantify. Studies have been conducted to assess erosion on rangelands, but…Publication Date 2008-09-01
- channels
- erosion
- grasslands
- rainfall simulation
- rills
- surface hydrology
- Library Collection RecordPrecipitation-use efficiency (PUE) is a key determinant of aboveground net primary production (ANPP). We used long-term datasets to contrast ANPP and PUE estimates between northern (southeast Montana…Publication Date 2009-05-01
- climate change
- drought
- grasslands
- precipitation-use efficiency
- primary production
- rangelands
- water
- Library Collection RecordPast research has shown that changes in grazing-resistance traits may be associated with genetic changes in plant populations. Little is known about spatial genetic relationships within plant…Publication Date 2009-07-01
- apomixis
- genetic diversity
- grasslands
- grazing
- history
- Library Collection RecordScaled quail (Callipepla squamata pallida Vigors) are closely associated with semidesert grasslands of the southwestern United States, and populations have declined by as much as 50% since 1960.…Publication Date 2006-05-01
- Callipepla squamata
- grazing
- livestock
- exotic grasses
- semidesert grassland
- Chihuahuan desertscrub
- Library Collection RecordDrought is an inherent trait of most rangelands and sound management necessitates managers address two fundamental questions when facing a drought situation. The first question is, ‘‘what is the…Publication Date 2006-07-01
- drought management
- forage quality
- grasslands
- primary production
- northern Great Plains
- soil water
- species composition
- Library Collection RecordHousing developments are replacing ranches in the southwestern United States, with potentially significant but little-studied ecological effects. We counted grasshoppers (Orthoptera: Acrididae) and…Publication Date 2006-11-01
- Acrididae
- fire
- forbs
- grasslands
- grazing
- livestock
- mesquite
- oak
- Library Collection RecordExpert opinion was sought on 2 issues relating to herbivory: seasonal sheep preferences for plant species and seasonal plant response to grazing. Expert opinion is commonly used to parameterize…Publication Date 2007-03-01
- conflict
- grasslands
- heathlands
- herbivory
- knowledge
- uncertainty
- Library Collection RecordThe impacts of wild herbivores on cattle diet selection were investigated in an East African rangeland during August 2001 and February 2002. The study compared cattle diets in plots exclusively…Publication Date 2007-03-01
- forbs
- livestock
- megaherbivores
- nutrition
- productivity
- wild herbivores
- Library Collection RecordHigh plant functional group diversity has been hypothesized to reduce resource concentrations based on the assumption that species from one functional group acquire resources similarly to one another…Publication Date 2007-05-01
- ammonium
- competition
- grasslands
- nitrates
- removal experience
- seasonal nutrient use
- soil nutrients
- Library Collection RecordIncreases of velvet mesquite (Prosopis velutina Woot.) in southwestern grasslands might have been caused by livestock consumption of fuels that once burned with sufficient frequency and intensity to…Publication Date 2007-09-01
- burn
- exotic grasses
- foliage volume
- fuels
- grazing
- livestock
- Library Collection RecordQuestions have been raised about whether herbaceous productivity declines linearly with grazing or whether low levels of grazing can increase productivity. This paper reports the response of forage…Publication Date 2007-11-01
- grasslands
- grazing optimization hypothesis
- grazing pressure
- net primary production
- northern mixed-grass prairie
- stocking rate
- Library Collection RecordHyperspectral 1-m-resolution remote sensing has the potential to reduce the time spent sampling and reduce spatial sampling errors found in traditional forage nutritive analysis over large areas. The…Publication Date 2005-09-01
- grasslands
- riparian
- vegetation index
- biochemical
- Library Collection RecordThis study was designed to determine the utility of a 1-m-resolution hyperspectral sensor to estimate total and live biomass along with the individual biomass of litter, grasses, forbs, sedges,…Publication Date 2005-09-01
- vegetation indices
- grasslands
- riparian
- standing crop
- Library Collection RecordChanges in soil nutrient pools and microbial activity due to fire are important for understanding the availability of nutrients to plants. The objective of this study was to evaluate the effect of…Publication Date 2003-05-01
- Actinomycetales
- Paspalum quadrifarium
- soil bacteria
- carbon
- soil nutrient dynamics
- Paspalum
- grasslands
- soil fertility
- fire ecology
- nitrogen
- prescribed burning
- phosphorus
- biomass
- range management
- seasonal variation
- Argentina
- Paspalum quadrifarium
- fire
- microbial biomass
- soil nutrients
- flooding pampa
- Library Collection RecordIn many riparian corridors of the semi-arid west, stream incision has resulted in lowered water tables, basin big sagebrush (Artemisia tridentata var. tridentata Nutt.) encroachment and the loss of…Publication Date 2003-07-01
- Lupinus argenteus
- soil nutrients
- soil enzymes
- Artemisia tridentata var. tridentata
- Carex douglasii
- semiarid soils
- soil organic matter
- enzyme activity
- soil depth
- ash
- nutrient content
- water table
- riparian areas
- Carex
- grasslands
- soil pH
- fire ecology
- prescribed burning
- Artemisia tridentata
- semiarid zones
- land restoration
- biomass
- plant litter
- Nevada
- invasive species
- restoration
- riparian ecosystems
- water table depth
- Library Collection RecordUnderstanding landscape conversion is vital for assessing the impacts of ecological and anthropogenic disturbances at regional and global scales. Since rangelands cover nearly half of the global land…Publication Date 2003-09-01
- environmental degradation
- land use change
- anthropogenic activities
- vegetation cover
- urbanization
- shrublands
- landscape ecology
- Prosopis
- image analysis
- urban areas
- rural areas
- remote sensing
- vegetation types
- semiarid zones
- botanical composition
- rangelands
- grasses
- Arizona
- land conversion
- landscape indices
- fire suppression
- rangeland maintenance
- semiarid
- grasslands
- Library Collection RecordCommunity-level (per unit area) and individual tiller reproductive biomass inside and outside of long-term exclosures on the northern winter range of Yellowstone National Park, USA were compared.…Publication Date 2003-09-01
- Yellowstone National Park
- bison
- seed productivity
- Cervus elaphus
- winter
- Antilocapra americana
- tillering
- Wyoming
- grazing intensity
- biomass
- botanical composition
- rangelands
- defoliation
- literature reviews
- grasses
- grasslands
- ungulates
- grazing
- clipping
- seed production and yield
- Yellowstone National Park
- literature reviews
- Library Collection RecordDue to its palatability and forage quality, antelope bitterbrush (Purshia tridentata Pursh DC) is a desirable shrub across western US rangelands. Because little information is available regarding…Publication Date 2004-03-01
- Purshia tridentata
- livestock
- big game
- winter range
- wildlife
- habitats
- browse
- Library Collection RecordGrazing of livestock in streams and associated riparian habitats (hereafter referred to as riparian zones) may affect small mammal communities by influencing vegetation, water quality, and other site…Publication Date 2004-07-01
- fencing
- litter
- livestock
- pastures
- streams
- vegetation
- wildlife
- Library Collection RecordSoil organic matter (OM) is an important factor for maintaining the productivity and the stability of the so-called caldénal woodland ecosystem of central Argentina. Little is known about the…Publication Date 2004-09-01
- soil organic matter
- grasslands
- Library Collection RecordMontezuma quail (Cyrtonyx montezumae Vigors) are closely associated with oak woodlands (Quercus spp.). Livestock grazing and cover availability are considered important factors affecting Montezuma…Publication Date 2004-09-01
- Arizona
- Cyrtonyx montezumae
- grazing
- habitat selection
- livestock
- Madrean evergreen woodland
- Montezuma quail
- Library Collection RecordPotential vegetation environments (e.g., habitat types, range sites, ecological sites) are important to land managers because they provide a conceptual basis for the description of resource…Publication Date 2001-09-01
- Little Missouri National Grasslands
- satellite surveys
- mapping
- Landsat
- shrublands
- land use planning
- habitats
- topography
- satellite imagery
- grasslands
- prediction
- range condition
- plant communities
- woodlands
- climatic factors
- grazing
- North Dakota
- habitat types
- ecological sites
- range sites
- ecological classification
- geographic information systems
- remote sensing
- vegetation mapping
- ecological units
- Library Collection RecordWe analyzed the habitat preferences of white-tailed deer in a 1,000 ha area in an arid region of northeastern Mexico where drinking water is abundant throughout the year (via 33 water troughs). Seven…Publication Date 2001-09-01
- Leucophyllum
- Celtis
- rest
- shade
- Acacia
- Hilaria
- predator-prey relationships
- Opuntia
- shrublands
- Flourensia
- habitat selection
- Prosopis
- arid zones
- searching behavior
- feeding
- grasslands
- gender differences
- Mexico
- rain
- animal preferences
- Odocoileus virginianus
- animal behavior
- plant communities
- seasonal variation
- canopy
- forage
- Odocoileus virginianus
- Northeastern zone
- water sources
- radiotelemetry
- hiding cover|thermal cover
- forage
- Library Collection RecordRotational grazing has been proposed as a Best Management Practice (BMP) for minimizing runoff in Wisconsin agricultural riparian areas. The influence of this land management practice on grassland…Publication Date 2001-09-01
- sturnella magna
- passerculus sandwichensis
- dolichonyx oryzivorus
- Wisconsin
- fields
- wild birds
- depth
- grasslands
- continuous grazing
- species diversity
- riparian buffers
- rotational grazing
- plant communities
- wildlife management
- plant litter
- pastures
- rotational grazing
- species richness
- density
- dominance
- buffer strips
- Library Collection RecordAccelerated erosion of streambanks in grazed riparian pastures is of concern to land managers. We tested the hypothesis that providing cattle free-choice off-stream water and trace mineralized salt…Publication Date 2001-11-01
- riverbank protection
- soil stability
- riparian grasslands
- water erosion
- water availability
- animal behavior
- dietary mineral supplements
- Oregon
- grazing intensity
- beef cattle
- grazing
- greenline
- water quality
- livestock
- off-stream water
- Library Collection RecordIn recent years livestock death losses from poisonous plants in the western United States have averaged about 2-3% annually. A review of 36 grazing studies in North America shows poisonous plant…Publication Date 2002-05-01
- Oxytropis
- deserts
- avoidance conditioning
- Oxytropis sericea
- controlled grazing
- poisonous weeds
- woodland grasslands
- Western United States
- grasslands
- continuous grazing
- stocking rate
- range management
- livestock
- Delphinium
- cattle
- sheep
- goats
- grazing
- poisonous plants
- economics
- Library Collection RecordRisk of livestock losses to poisonous plants can be reduced on many ranges through prudent management based on application of existing knowledge. Poisonous plants can be categorized using both…Publication Date 2002-05-01
- weed palatability
- risk assessment
- toxicity
- controlled grazing
- poisonous weeds
- selective grazing
- grazing intensity
- range management
- literature reviews
- livestock
- grazing management
- diet selection
- poisonous plants
- Library Collection RecordChanges in rangeland species composition can effect forage quality, ecosystem function, and biological diversity. Unfortunately, documenting species compositional change is difficult due to a lack of…Publication Date 2002-07-01
- sown grasslands
- habitats
- Quercus
- woodland grasslands
- species diversity
- ecological succession
- invasion
- grazing intensity
- California
- range management
- botanical composition
- invasive species
- Northwest California
- herbarium
- oak woodlands
- livestock
- flora
- invasive species
- Library Collection RecordPanels of experts from the Society for Range Management and the National Research Council proposed that status of rangeland ecosystems could be ascertained by evaluating an ecological site's…Publication Date 2002-11-01
- soil surface
- soil structure
- flow resistance
- soil morphology
- gullied land
- wind erosion
- hydrologic factors
- assessment
- rapid methods
- data collection
- ecological balance
- grassland condition
- overland flow
- rill erosion
- ground cover
- grasslands
- range condition
- perennials
- mortality
- vegetation
- biomass production
- range management
- plant litter
- introduced species
- invasive species
- literature reviews
- United States
- soil compaction
- soil stability
- hydrologic function
- biological integrity
- ecosystem status
- erosion
- infiltration
- inventory
- Library Collection RecordVegetation changes were evaluated over a 13 year period (1988-2000) on moderately grazed and lightly grazed rangelands in the Chihuahuan Desert of south central New Mexico. During the study period,…Publication Date 2003-03-01
- stocking rate
- arid lands
- livestock
- range management
- Library Collection RecordWe compared the herbage standing crop on 31 farms along a rainfall gradient in Namibia (southwestern Africa) in 1997 with the results attained for the same gradient by Walter (1939). We found that…Publication Date 2000-03-01
- Namibia
- environmental degradation
- desertification
- grasslands
- rain
- stocking rate
- biomass production
- overgrazing
- forage
- Africa
- rangelands
- historical records
- grazing
- rainfall
- Library Collection RecordAssessment of standing crop on grasslands using a visual obstruction technique provides valuable information to help plan livestock grazing management and indicate the status of wildlife habitat. The…Publication Date 2000-11-01
- stand density
- data collection
- errors
- lowlands
- grasslands
- Nebraska
- sampling
- biomass
- range management
- grasses
- plant height
- Residual cover
- grassland structure
- regression model
- wildlife habitats
- Robel pole
- Nebraska Sandhills
- Library Collection RecordA fire scar chronology was constructed from ponderosa pine (Pinus ponderosa Dougl. ex Laws.) and Rocky Mountain juniper (Juniperus scopulorum Sarg.) trees within the 70 km2 Rochelle Hills Area of the…Publication Date 2000-11-01
- history
- Juniperus scopulorum
- fire scars
- fire intervals
- understory
- frequency
- grasslands
- Pinus ponderosa
- fire ecology
- fires
- fire effects
- Wyoming
- plant litter
- seasonal variation
- canopy
- fire intervals
- Library Collection RecordA 3-year experiment to evaluate tracked vehicle effects on vegetation and soil characteristics was established on the Gilbert C.Grafton South State Military Reservation (CGS) in North Dakota. Study…Publication Date 2000-11-01
- trafficability
- tracked vehicles
- Bromus inermis
- soil density
- soil depth
- ground cover
- Poa pratensis
- grasslands
- plant litter
- botanical composition
- soil compaction
- bulk density
- North Dakota
- Soil dry bulk density
- plant community
- personnel carrier
- Poa pratensis
- Bromus inermis
- Library Collection RecordIn recent times, pinyon (Pinus spp.)-juniper (Juniperus spp.) woodlands have expanded into large portions of the Southwest historically occupied by grassland vegetation. From 1997-1998, we studied…Publication Date 2001-05-01
- wild birds
- pinyon-juniper
- frequency
- grasslands
- species diversity
- ecological succession
- woodlands
- establishment
- botanical composition
- Pinus
- Juniperus
- Arizona
- Juniperus monosperma
- grasslands
- pinyon-juniper
- Arizona
- southwestern U.S.
- avian communities
- succession
- Library Collection RecordThe dependence between grassland herbage production and precipitation within the Boreal region of central Alberta was evaluated. Additional objectives were to compare current year growing season (e.g…Publication Date 2001-05-01
- growth periods
- simulation models
- hydrology
- soil temperature
- highlands
- grasslands
- prediction
- Alberta
- growth
- precipitation
- biomass production
- plant communities
- forage
- current year precipitation
- lowlands
- production
- regression
- uplands
- water year
- Library Collection RecordCholla cactus may serve as an emergency feedstuff for livestock when forage availability is low. A study was conducted at the Corona Range and Livestock Research Center to evaluate the nutritive…Publication Date 2001-05-01
- processing technology
- spines
- opuntia imbricata
- moisture content
- organic matter
- burning
- leaves
- cows
- mineral content
- stems
- estimation
- fiber content
- feeds
- digestibility
- crude protein
- rumen fermentation
- nutritive value
- livestock
- New Mexico
- forage
- dry matter
- drought forages
- mineral content
- emergency feeding
- Library Collection RecordThe cover of native and non-native introduced plants was compared between seeded (reclaimed) ski runs and adjacent or nearby unseeded (control) areas at a managed ski area in northern Arizona to…Publication Date 2001-05-01
- sowing
- disturbed soils
- skiing
- topsoil
- soil degradation
- ground cover
- grasslands
- reclamation
- species diversity
- introduced species
- botanical composition
- Arizona
- disturbance
- reclamation
- ski runs
- non-native species
- richness
- Library Collection RecordAlthough recognized in importance from the dawn of history, forages have too often been underestimated and undervalued perhaps in part because animal performance has frequently failed to reflect…Publication Date 2001-07-01
- plant diseases and disorders
- immune response
- morbidity
- animal health
- sexual reproduction
- antinutritional factors
- Festuca arundinacea
- nutritional status
- toxicity
- mineral content
- economic analysis
- liveweight gain
- mortality
- adaptation
- animal behavior
- secondary metabolites
- digestibility
- insect pests
- nutritive value
- literature reviews
- livestock
- forage
- feed intake
- chemical constituents of plants
- nutrition
- animal health
- performance
- forage quality
- toxins
- Library Collection RecordPlant growth depends upon C, H, O, and at least 13 mineral elements. Six of these (N, K, Ca, Mg, P, and S) macro-elements normally occur in plants at concentrations greater than 1,000 mg kg(-1) level…Publication Date 2001-07-01
- silicon
- animal health
- sulfur
- nickel
- nutrient-nutrient interactions
- nutrient content
- mineral content
- nutrient availability
- sodium
- nitrogen
- potassium
- trace elements
- phosphorus
- magnesium
- calcium
- mineral nutrition
- literature reviews
- livestock
- forage
- mineral interaction
- mineral requirements
- mineral nutrients
- ruminant diets
- Library Collection RecordNet carbon exchange of terrestrial ecosystems will likely change as atmospheric CO2 concentration increases. Currently, little is known of the annual dynamics or magnitude of CO2 flux on many native…Publication Date 1999-01-01
- experimental rigs
- field experimentation
- biogeochemical cycles
- Achnatherum thurberianum
- grasslands
- carbon dioxide
- Artemisia tridentata
- plant communities
- seasonal variation
- Library Collection RecordWe identified land uses, vegetation cover types, and landscape patterns associated with avian community diversity in 2 rural landscapes in a hardwood forest-tallgrass prairie ecotone that differ with…Publication Date 1999-09-01
- rural population
- suburban areas
- roads
- arable land
- patch size
- population change
- breeding places
- deciduous forests
- wild birds
- shrublands
- landscapes
- habitat selection
- ground cover
- land use
- population density
- ecotones
- grasslands
- brush control
- species diversity
- pastures
- Oklahoma
- wildlife management
- prairies
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