Rangeland Ecology & Management
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- Library Collection RecordTwo grazing trials were conducted in separate years on a 5.86 ha winter wheat (Triticum aestivum var. Chisholm) pasture divided into 10 experimental paddocks. Paddocks were differentially grazed with…Publication Date 1995-05-01
- winter wheat
- in vitro
- liveweight gain
- Oklahoma
- steers
- digestibility
- grazing intensity
- biomass
- grazing
- beef cattle
- feed intake
- 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 RecordA 4-year study was conducted on Kansas Flint Hills bluestem range to monitor animal gain, grass, and forb standing biomass following grazing, plant population dynamics, and in 2 years, subsequent…Publication Date 1995-05-01
- feed conversion
- dressing percentage
- carcass weight
- sorghum
- Sorghastrum nutans
- warm-season grasses
- Schizachyrium scoparium
- Poa pratensis
- Kansas
- liveweight gain
- grazing experiments
- pastures
- Andropogon gerardii
- steers
- feed supplements
- biomass
- botanical composition
- grasses
- beef cattle
- Library Collection RecordAn observed increase in winterfat (Ceratoides lanata (Pursh) J.T. Howell) on ungrazed rangeland suggests that this shrub may potentially be an important forage resource in the Northern Mixed Prairie…Publication Date 1995-05-01
- Saskatchewan
- rain
- Krascheninnikovia lanata
- growth
- grazing intensity
- biomass
- defoliation
- Library Collection RecordQuantity and quality of forage produced are primary determinants of level of livestock production derived from grazing lands. Moreover, species composition of herbage is often considered a primary…Publication Date 1995-05-01
- fiber content
- crude protein
- biomass
- botanical composition
- Montana
- grasses
- forage
- 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 RecordThis study was conducted for 2 consecutive growing seasons in a temperate region of Pakistan to determine a residual phytomass level necessary to adequately protect the soil against accelerated…Publication Date 1995-05-01
- sediments
- watershed management
- water erosion
- Pakistan
- rill erosion
- Pinus wallichiana
- Universal Soil Loss Equation
- rainfall simulators
- biomass production
- grazing intensity
- biomass
- canopy
- soil water
- Library Collection RecordBeaver (Castor canadensis Kuhl) and willow (Salix spp.) are important components of riparian restoration on degraded western rangelands. Land managers need quantitative information to evaluate…Publication Date 1995-07-01
- Castor canadensis
- Salix exigua
- douglas greek
- mathematical models
- stems
- diameter
- biomass
- Colorado
- Library Collection RecordBasal cover, density, biomass, and species richness of the understory were measured in concentric zones from the stem bases of large redberry juniper (Juniperus pinchotii Sudw.) trees to 6 m beyond…Publication Date 1995-03-01
- textural soil types
- clay loam soils
- Juniperus pinchotii
- soil depth
- plant interaction
- understory
- species diversity
- ecological succession
- forbs
- shrubs
- Texas
- biomass
- canopy
- grasses
- Library Collection RecordDowny brome (Bromus tectorum L.) is an alien grass that dominates disturbed ground in shrub-steppe ecosystems of the western United States. Responses of downy brome to added nitrogen and water were…Publication Date 1995-07-01
- germination
- nitrogen fertilizers
- leaf area index
- Bromus tectorum
- water-use efficiency
- old field soils
- leaf conductance
- photosynthesis
- gas exchange
- water
- limiting factors
- old fields
- Washington
- biomass
- 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 RecordLehmann lovegrass (Eragrostis lehmanniana Nees), an introduced warm season grass, has invaded grasslands in southern Arizona, in many areas replacing the native warm-season grasses. A water balance…Publication Date 1994-09-01
- water binding capacity
- water content
- water balance
- evapotranspiration
- rain
- biomass
- Eragrostis lehmanniana
- introduced species
- Arizona
- soil water
- Library Collection RecordRoot exudates are substances released into the surrounding medium by healthy and intact plant roots. Research on root exudates has shown that root exudates can reduce seed germination and plant…Publication Date 1993-07-01
- root exudates
- Lespedeza cuneata
- plant interaction
- plant growth substances
- roots
- length
- biomass
- grasses
- Library Collection RecordGreen herbaceous phytomass was measured in August 1987 in grassland and sagebrush-grassland communities of Yellowstone National Park and related to August 1987 Landsat MSS data. A linear model using…Publication Date 1993-03-01
- satellite surveys
- availability
- Landsat
- national parks
- satellite imagery
- vegetation
- Wyoming
- biomass
- rangelands
- forage
- Library Collection RecordData collected over a 11-year period at 2 study areas near Vaughn and Roswell, N.M. were used to define equations that relate grass biomass to the amount of broom snakeweed (Gutierrezia sarothrae […Publication Date 1993-11-01
- understory
- Gutierrezia sarothrae
- Bouteloua gracilis
- biomass
- New Mexico
- Library Collection RecordThe decision to use double sampling with a regression or ratio estimator is not a simple task. This study was conducted to determine whether a ratio or regression estimator should be used to estimate…Publication Date 1993-01-01
- Monte Carlo method
- bootstrap variance estimates
- jackknife variance estimates
- variance
- regression analysis
- estimation
- vegetation
- sampling
- Bouteloua gracilis
- biomass
- Library Collection RecordCharacterization of standing herbaceous biomass on rangeland is complicated by both temporal and spatial variability that results from patchiness in vegetation. These patches often cause nonuniform…Publication Date 1992-05-01
- mixed pastures
- frequency distribution
- Buchloe dactyloides
- mathematical models
- spatial variation
- prediction
- temporal variation
- Bouteloua gracilis
- grazing intensity
- cattle
- biomass
- grazing
- plant height
- Library Collection RecordTo help local Niger government authorities and donor countries ameliorate conditions in the advent of drought, a rapid yet simple means to assess annual herbaceous production at the end of the rainy…Publication Date 1992-05-01
- Sahel
- Niger
- mathematical models
- prediction
- meteorological data
- regression analysis
- rain
- crop production
- biomass
- rangelands
- forage
- Library Collection RecordThe physiological and morphological responses of 6 wheatgrass (Agropyron) cultivars to vesicular-arbuscular mycorrhizal inoculation were measured in the greenhouse. These included diploid, tetraploid…Publication Date 1991-07-01
- Glomus
- agropyron cristatum subsp. puberulum
- ploidy
- vesicular arbuscular mycorrhizae
- nutrient content
- stomatal conductance
- roots
- plant morphology
- Agropyron desertorum
- shoots
- carbon dioxide
- Agropyron cristatum
- nutrient uptake
- cultivars
- transpiration
- water-use efficiency
- gas exchange
- phosphorus
- tillering
- biomass
- Library Collection RecordThe effect of late-autumn cattle grazing on plant biomass was examined in a western Great Plains cottonwood riparian zone prone to catastrophic flooding every 5-8 years. Following 1 year of pre-…Publication Date 1991-07-01
- autumn
- Populus
- floodplains
- Spartina
- Spartina pectinata
- environmental impact
- community ecology
- Populus deltoides subsp. monilifera
- standing biomass
- community composition
- riparian grasslands
- Salix
- leaves
- controlled grazing
- plant ecology
- flooding
- riparian buffers
- biomass production
- cattle
- biomass
- botanical composition
- grazing
- Colorado
- forage
- Library Collection RecordTallgrass prairies are an important forage resource in the eastern Central Great Plains. The effect of spring burning, fertilization, and atrazine [6-chloro-N-ethyl-N'-(1-methylethyl)-1,3,5-…Publication Date 1992-05-01
- plant cultural practices
- Bromus inermis
- crop quality
- atrazine
- Poa pratensis
- fires
- fire effects
- nitrogen fertilizers
- Nebraska
- Sorghastrum nutans
- Andropogon gerardii
- prairies
- biomass
- range management
- botanical composition
- Library Collection RecordVegetational response of a nine-paddock, short-duration grazing cell was compared to that of a continuous pasture for a 5-year period in southcentral New Mexico. Differences in vegetational response…Publication Date 1991-07-01
- grazing time
- vegetation cover
- standing crop
- stocking rate
- pastures
- vegetation
- Bouteloua gracilis
- biomass production
- grazing intensity
- cattle
- biomass
- range management
- botanical composition
- grazing
- New Mexico
- Library Collection RecordClearing and thinning of caatinga vegetation in northeastern Brazil are viewed as methods of optimizing forage and wood production. Our study compared the botanical composition of goat diets relative…Publication Date 1990-11-01
- tropical forests
- caatinga
- thinning
- goat feeding
- deciduous forests
- silvopastoral systems
- clearcutting
- woodland grasslands
- pastures
- natural grasslands
- diets
- goats
- Brazil
- biomass
- seasonal variation
- botanical composition
- canopy
- forage
- Library Collection RecordAlthough extensive work has evaluated plant response to season of defoliation, few studies have evaluated the influence of season of defoliation on soil water depletion, amount of regrowth, and total…Publication Date 1990-05-01
- Agropyron desertorum
- cutting date
- crop production
- regrowth
- Oregon
- soil water content
- biomass
- phenology
- seasonal variation
- defoliation
- Library Collection RecordA management strategy using short-duration grazing and fertilization was simulated in a study with individual ‘Ermelo’ weeping lovegrass [Eragrostis curvula (Shrad.) Nees] plants. Influence of 2…Publication Date 1990-09-01
- shoot pruning
- NPK fertilizers
- crop quality
- Eragrostis curvula
- dry matter accumulation
- irrigation scheduling
- root systems
- water-use efficiency
- regrowth
- crude protein
- growth rate
- biomass
- crop yield
- forage
- plant height
- Library Collection RecordHerbage biomass for blue grama (Bouteloua gracilis [H.B.K. Lag]), pinyon ricegrass (Piptochaetium fimbriatum [H.B.K.] Hitche.), New Mexico muhly (Muhlenbergia pauciflora Buckl.), other grasses and…Publication Date 1990-09-01
- mixed forests
- muhlenbergia pauciflora
- piptochaetium fimbriatum
- light penetration
- Muhlenbergia
- Juniperus monosperma
- silvopastoral systems
- forest ecology
- pinyon-juniper
- Pinus edulis
- understory
- pastures
- Poaceae
- Bouteloua gracilis
- biomass
- canopy
- New Mexico
- forage
- Library Collection RecordCheatgrass (Bromus tectorum L.) dominates large tracts of rangeland in the western United States. Previous research has demonstrated the competitive nature of this species; however, the mechanisms…Publication Date 1990-09-01
- density
- leaf area
- growth periods
- roots
- root shoot ratio
- Agropyron desertorum
- root systems
- seedlings
- Bromus tectorum
- length
- growth rate
- biomass
- plant competition
- Library Collection RecordCombined grazing by black-tailed prairie dogs (Cynomys ludovicianus) and bison (Bison) produces and maintains a series of changes in the vegetation of prairie dog colonies. However, because their…Publication Date 1991-03-01
- grazing time
- Cynomys ludovicianus
- mixed pastures
- bison
- controlled grazing
- South Dakota
- vegetation
- grazing intensity
- nitrogen content
- prairies
- biomass
- range management
- botanical composition
- 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 RecordThe effects of N fertilization on spotted knapweed (Centaurea maculosa Lamarck) and competing vegetation were studied at 2 sites in western Montana during 1981 through 1984. The N was applied 1 time…Publication Date 1989-05-01
- Centaurea maculosa
- crested wheatgrass
- quackgrass
- Agropyron cristatum
- Agropyron repens
- biomass
- yield
- Library Collection RecordAbove- and belowground net primary production (ANPP and BNPP) were compared between a 30-year-old crested wheatgrass site and an adjacent native shortgrass prairie. ANPP was estimated using…Publication Date 1989-03-01
- roots
- Agropyron cristatum
- Wyoming
- prairies
- biomass
- grasses
- Library Collection RecordHealthy meadow communities generally have excellent soil binding properties. However, belowground characteristics of these communities have seldom been evaluated. In 4 meadow community types (CTs) we…Publication Date 1989-07-01
- Carex douglasii
- poa nevadensis
- gradients
- Carex nebrascensis
- rooting depth
- Poa
- Juncus
- Juncus balticus
- meadows
- Carex
- plant ecology
- root systems
- length
- plant communities
- spatial distribution
- biomass
- Nevada
- soil water regimes
- Library Collection RecordPatterns of end-of-season standing crop were evaluated during a 4-year period on an oak-bunchgrass range site under short-duration grazing in northern Mexico. Patterns were determined as a function…Publication Date 1989-01-01
- crop management
- Mexico
- stocking rate
- biomass
- range management
- grazing
- Library Collection RecordFourwing saltbush [Atriplex canescens (Pursh) Nutt.] seedlings from 4 western Texas tetraploid populations were established in uniform nurseries at San Angelo, Barnhart, and Marfa, Texas, in 1981 to…Publication Date 1987-07-01
- digestible organic matter
- phenotype
- ecotypes
- leaves
- flowers
- stems
- genetic variation
- Atriplex canescens
- mortality
- adaptation
- environmental factors
- phosphorus
- nutrient contents of plants
- crude protein
- land restoration
- Texas
- biomass
- phenology
- nutritive value
- canopy
- Library Collection RecordThe forage disk meter, a double sampling device used to predict forage biomass, has been used extensively on improved pastures, but its use on rangelands has not been investigated thoroughly.…Publication Date 1987-09-01
- discs
- meters
- calibration
- Kansas
- regression analysis
- sampling
- biomass
- botanical composition
- rangelands
- forage
- Library Collection RecordBroom snakeweed (Gutierrezia sarothrae [Pursh] Britt. and Rusby) has increased in density and distribution on many southwestern ranges. The objective of this study was to determine root and shoot…Publication Date 1988-01-01
- roots
- shoots
- Gutierrezia sarothrae
- seedlings
- growth rate
- establishment
- biomass
- New Mexico
- Library Collection RecordTotal nonstructural carbohydrates (TNC) and nitrogen (N) in 'WW-Spar' (Bothriochloa ischaemum) and 'Caucasian' (B. caucasica) Old World bluestems were monitored in field…Publication Date 1987-07-01
- reserve materials
- sheaths
- concentration
- specific leaf weight
- total nonstructural carbohydrates
- seasonal growth
- leaves
- roots
- carbohydrates
- stems
- vegetation management
- Bothriochloa ischaemum
- Bothriochloa bladhii
- vigor
- nitrogen
- biomass
- Library Collection RecordUnderstanding the temporal response of vegetation to selected livestock grazing strategies is necessary for the continued maintenance or increased productivity of rangelands. Vegetation cover and…Publication Date 1988-03-01
- plant community analysis
- plant ecology
- ecological succession
- grazing experiments
- grazing intensity
- Texas
- biomass
- rangelands
- livestock
- grazing
- Library Collection RecordResearch was initiated at the Texas Experimental Ranch in 1981 to quantify the effects of 2 stocking densities, equivalent to 14- and 42-paddock rotational grazing (RG) treatments, on aboveground…Publication Date 1987-05-01
- stocking rate
- rotational grazing
- cattle
- Texas
- biomass
- rangelands
- grazing
- forage
- Library Collection RecordAbove- and belowground biomass dynamics of 'WW-Spar' (Bothriochloa ischaemum) and 'Caucasian' (B. caucasica) Old World bluestems were monitored under field conditions during…Publication Date 1986-07-01
- plant physiology
- roots
- plant morphology
- Bothriochloa ischaemum
- Bothriochloa bladhii
- water-use efficiency
- Oklahoma
- growth rate
- biomass
- rangelands
- forage
- Library Collection RecordStudies have shown a negative relationship between stocking rate and animal performance in conventional grazing systems. However, short-duration grazing (SDG) proponents state that stocking rates can…Publication Date 1986-05-01
- Parkinsonia
- cercidium floridum
- annual fluctuations
- carbon
- Prosopis juliflora
- deserts
- biogeochemical cycles
- plant analysis
- nitrogen
- biomass
- plant litter
- seasonal variation
- rangelands
- Arizona
- chemical constituents of plants
- Library Collection RecordStudies on several wild and domestic ungulates suggest that large grazers attain higher maximum forage intake rates but require relatively higher forage biomass to do so. In this study, forage intake…Publication Date 1987-01-01
- bison
- boreal forests
- foraging
- Alberta
- biomass
- range management
- ecology
- feed intake
- Library Collection RecordSeasonal nitrogen dynamics were documented in an undisturbed sand shinnery oak (Quercus havardii) community and in similar areas treated with tebuthiuron 3 years and 6 years prior to sampling in 1981…Publication Date 1986-09-01
- residual effects
- field tests
- above-ground biomass
- below-ground biomass
- nitrogen metabolism
- tebuthiuron
- sandy soils
- weed control
- Quercus havardii
- soil chemistry
- Texas
- biomass
- seasonal variation
- rangelands
- Library Collection RecordThis study examines the impact of long-tailed vole (Microtus longicaudus) and deer mouse (Peromyscus maniculatus) population changes and their feeding behavior on shrub populations and the resulting…Publication Date 1987-01-01
- plant damage
- Peromyscus maniculatus
- microtus longicaudus
- Peromyscus
- Microtus
- ecosystems
- plant ecology
- steppes
- population dynamics
- woody plants
- herbivores
- Wyoming
- Artemisia tridentata
- biomass
- plant litter
- rangelands
- Library Collection RecordIn the northern Great Basin, populations of black-tailed jackrabbits (Lepus californicus) are cyclic, reaching high densities at approximately 10-year intervals. This project examined impacts of…Publication Date 1986-03-01
- Lepus californicus
- ground cover
- population density
- steppes
- Chrysothamnus viscidiflorus
- Krascheninnikovia lanata
- Idaho
- Lepus
- plant communities
- biomass
- rangelands
- ecology
- grazing
- Library Collection RecordEstablishment of forage grasses depends upon their ability to compete for resources in the critical seedling establishment phase. Desirable native grass species are generally considered to be more…Publication Date 1985-11-01
- forage crops
- Bothriochloa
- C4 photosynthesis
- leaf area
- plant morphology
- perennials
- seedlings
- growth
- biomass
- grasses
- water stress
- Library Collection RecordTotal production of aboveground biomass on a 238-ha watershed was not affected when big sagebrush (Artemisia tridentata) was controlled by aerial application of 2,4-D (2,4-dichlorophenoxyacetic acid…Publication Date 1986-03-01
- plant propagation
- aerial spraying
- 2,4-D
- grassland improvement
- pesticide application
- watersheds
- brush control
- Wyoming
- Artemisia tridentata
- biomass
- botanical composition
- rangelands
- grasses
- Library Collection RecordBiomass components of mesquite (Prosopis juliflora (Swartz) DC) and palo verde (Cercidium floridum (Benth)) soil-plant systems were collected during spring, winter, and fall for 3 years to study the…Publication Date 1986-03-01
- Parkinsonia
- cercidium floridum
- annual fluctuations
- carbon
- Prosopis juliflora
- deserts
- biogeochemical cycles
- plant analysis
- nitrogen
- biomass
- plant litter
- seasonal variation
- rangelands
- Arizona
- chemical constituents of plants
- Library Collection RecordAgropyron smithii populations exposed to 3 controlled SO2 concentrations were defoliated either once or twice during the growing season at a light and a heavy intensity. The intensity and frequency…Publication Date 1985-01-01
- sulfur dioxide
- growth
- Pascopyrum smithii
- biomass
- defoliation
- Library Collection RecordThe growth dynamics of 4 Old World bluestem (Bothriochloa spp.) accessions were monitored in the field by periodic harvests of the aboveground biomass components (leaf blades, leaf sheaths plus…Publication Date 1985-01-01
- growth analysis
- forage crops
- Bothriochloa
- biomass