Rangeland Ecology & Management
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- Library Collection RecordAssessment of herbaceous standing crop in heterogeneous range plant communities requires large numbers of samples to account for inherent variability. The dry-weight-rank method (DWR) was developed…Publication Date 2001-01-01
- mixed prairie
- ranking
- rapid methods
- Juniperus pinchotii
- Prosopis glandulosa
- stand characteristics
- estimation
- sampling
- Texas
- prairies
- biomass
- botanical composition
- dry matter
- botanical composition
- estimation
- landscapes
- standing crop proportion
- Library Collection RecordLittle information is available about seasonal application and carry-over effects of biosolids application to semi-arid grasslands. Biosolids rates of 0 (control), 7, 18, or 34 Mg ha-1 were topically…Publication Date 2001-01-01
- irrigated conditions
- sewage sludge
- waste disposal
- land application
- timing
- grassland improvement
- Hilaria mutica
- mineral content
- semiarid grasslands
- rain
- nitrogen content
- application rates
- Texas
- crop yield
- Hilaria mutica
- Chihuahuan desert grassland
- biosolids surface-application
- biosolids land-application
- irrigation
- standing crop
- forage quality
- carry-over effects
- Library Collection RecordWoody cover, when expressed at the scale of the 207 km2 Cusenbary Draw basin, remained unchanged (approximately 23%) from 1955 to 1990. When expressed at the scale of range sites, woody cover…Publication Date 2001-03-01
- soil depth
- water yield
- water balance
- multiple use
- landscapes
- watershed management
- evapotranspiration
- Prosopis glandulosa
- brush control
- runoff
- woody plants
- precipitation
- spatial distribution
- Texas
- range management
- botanical composition
- Juniperus
- rangelands
- brush management
- evapotranspiration
- GIS and remote sensing
- hydrologic modeling
- semiarid rangelands
- Library Collection RecordPlacing basins in rangeland seedbeds to capture rainfall has enhanced seeded grass establishment, but it has not been practical on debris-littered land following rootplowing for brush control. A disk…Publication Date 2001-03-01
- disc cultivators
- chain diking
- disk chaining
- chains
- Panicum coloratum
- sowing
- seedbed preparation
- grassland improvement
- Prosopis glandulosa
- brush control
- Bothriochloa ischaemum
- precipitation
- plant density
- Texas
- seedbeds
- rangeland seeding
- brush control
- honey mesquite
- Prosopis glandulosa
- Library Collection RecordIt is necessary to quantify rates of woody plant encroachment on southwestern USA rangelands to determine the economic feasibility of treatments designed to manage these plants. This study observed…Publication Date 2001-03-01
- area
- plowing
- root plowing
- woody weeds
- ground cover
- Prosopis glandulosa
- brush control
- precipitation
- spatial distribution
- Texas
- canopy
- honey mesquite
- Prosopis
- density
- shrub encroachment
- aerial photography
- image analysis
- 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 RecordRedberry juniper (Juniperus pinchotii Sudw.) is a noxious shrub or small tree that invades rangelands in northwest Texas. Field reflectance measurements showed that redberry juniper had lower visible…Publication Date 2001-05-01
- infrared radiation
- detection
- color
- aerial photography
- Weeds
- reflectance
- Juniperus pinchotii
- Infestation
- remote sensing
- shrubs
- plant density
- Texas
- botanical composition
- color-infrared photography
- reflectance
- digital image anaysis
- accuracy assessment
- Juniperus
- Library Collection RecordGoats consume juniper, but toxic terpenoids within the plant limit intake. Our objective was to determine if dosing goats with the adsorptive compound activated charcoal would increase juniper…Publication Date 2001-05-01
- Juniperus ashei
- charcoal
- Juniperus pinchotii
- browse
- adaptation
- terpenoids
- goats
- Texas
- forage
- feed intake
- feeding preferences
- Juniperus
- J. ashei
- J. pinchotii
- Capra
- experience
- preference
- toxicosis
- feedback
- aversions
- browsing
- 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 RecordSome grasses harbor endophytic fungi living in intercellular spaces in the leaves, stems and reproductive organs. The fungi can dramatically affect the physiology and ecology of plants. For example,…Publication Date 2001-07-01
- Elymus canadensis
- mutualism
- colonization
- host plants
- Iowa
- plant physiology
- toxins
- plant-water relations
- leaves
- Illinois
- Missouri
- stems
- Kansas
- plant ecology
- incidence
- Nebraska
- herbivores
- Oklahoma
- tillers
- Texas
- prairies
- geographical distribution
- Acremonium
- endophytes
- Elymus canadensis
- Epichlo typhina
- Neotyphodium
- geographical pattern
- mutualism
- tallgrass prairie
- 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 RecordRedberry juniper (Juniperus pinchotii Sudw.) is a common invasive brush species that reduces rangeland productivity over vast acreages in the Rolling Plains and Edwards Plateau regions of Texas. The…Publication Date 1999-11-01
- chaining
- timing
- Juniperus pinchotii
- costs and returns
- cost-benefit analysis
- brush control
- prescribed burning
- profitability
- biomass production
- Texas
- canopy
- forage
- Library Collection RecordAshe juniper (Juniperus ashei Buchh.) is increasing in density and areal coverage on the Edwards Plateau of Texas. This is causing changes in community leaf area that could impact the ecosystem water…Publication Date 1998-11-01
- area
- Juniperus ashei
- leaf area
- leaves
- water balance
- stems
- estimation
- Texas
- biomass
- canopy
- plant height
- Library Collection RecordTen eastern gamagrass [Tripsacum dactyloides (L.) L.] entries from Kansas, Oklahoma, and Texas, were evaluated for in vitro dry matter digestibility (IVDMD), protein concentration, lignin…Publication Date 1999-11-01
- phenylalanine ammonia-lyase
- enzyme activity
- geographical variation
- Tripsacum dactyloides
- leaves
- stems
- lignin
- Kansas
- genetic variation
- protein content
- Oklahoma
- in vitro digestibility
- Texas
- maturity stage
- Library Collection RecordCombined with other information, fecal output appears to have potential use in models to predict forage intake. Better understanding of fecal output dynamics relative to forage availability could…Publication Date 1999-05-01
- digestibility markers
- ytterbium
- organic matter
- leaves
- stems
- prediction
- equations
- feces composition
- forbs
- steers
- digestibility
- crude protein
- Texas
- grasses
- dry matter
- 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
- Library Collection RecordField studies were conducted in 2 types of grasslands in the Pryor Mountain Wild Horse Range of northern Wyoming and southern Montana to examine plant biomass production and nitrogen responses to the…Publication Date 1999-05-01
- mesic grasslands
- irrigated conditions
- controlled release
- NPK fertilizers
- arid grasslands
- competitive ability
- grasslands
- irrigation
- cutting frequency
- biomass production
- Wyoming
- nitrogen content
- Montana
- grasses
- Library Collection RecordWater yield from rangeland on the Edwards Plateau, Texas is significantly greater if a site is dominated by grass instead of brush. Brush control programs are being considered by policy-makers as a…Publication Date 2000-01-01
- leasing
- farm surveys
- farm income
- game animals
- water yield
- watershed management
- ranching
- hunting
- cost analysis
- decision making
- brush control
- Texas
- wildlife management
- range management
- Library Collection RecordDiscing strips of rangeland to increase wildlife foods is a common management practice. I tested the hypotheses (1) annual discing results in greater canopy cover of annual forbs preferred by white-…Publication Date 1999-07-01
- discing
- annuals
- Prosopis glandulosa
- frequency
- palatability
- perennials
- rain
- Odocoileus virginianus
- forbs
- semiarid zones
- Texas
- canopy
- feeding preferences
- Library Collection RecordThe effects of root-plowing on soil organic carbon and nitrogen were investigated by comparing paired undisturbed native rangeland with root-plowed sites in the southern Great Plains. Time since root…Publication Date 1999-11-01
- Nassella leucotricha
- Sporobolus asper
- Nassella
- Bothriochloa saccharoides
- plowing
- soil organic matter
- Bothriochloa
- Sporobolus
- soil density
- Bouteloua curtipendula
- Buchloe dactyloides
- grassland improvement
- Prosopis
- brush control
- nitrogen content
- Texas
- Library Collection RecordWhite-tailed deer (Odocoileus virginianus Zimm.) appear to concentrate foraging activity along the perimeters of warm-season food plots. Because of this, we tested the hypothesis that (1) providing…Publication Date 1999-01-01
- Lablab purpureus
- foraging
- mortality
- Odocoileus virginianus
- semiarid zones
- spatial distribution
- Texas
- biomass
- feeding preferences
- Library Collection RecordConcentration and composition of monoterpenoids in plant tissue affects a variety of environmental and ecological issues such as plant defenses, plant classification and phytotoxicity. Developing the…Publication Date 1998-09-01
- distillation
- hexane
- gas chromatography
- steam distallation
- extraction
- Juniperus ashei
- Juniperus pinchotii
- monoterpenoids
- conifer needles
- duration
- Texas
- Library Collection RecordChinese tallow (Sapium sebiferum L. Roxb.) was introduced to the United States from China in the mid to late 1800s and has since naturalized throughout much of the southern U. S. Tallow continues to…Publication Date 1999-09-01
- Triadica sebifera
- timing
- cultural control
- application timing
- roots
- carbohydrates
- herbicides
- weed control
- chemical control
- Texas
- introduced species
- chemical constituents of plants
- Library Collection RecordWarm-season perennial bunchgrasses frequently are used for hay and grazing in central Texas. We compared 6 alternative grasses with 2 more commonly grown species ['Ermelo' weeping lovegrass…Publication Date 1999-03-01
- Pennisetum orientale
- Pennisetum flaccidum
- Eragrostis superba
- Digitaria eriantha
- Panicum coloratum
- Eragrostis curvula
- lignin
- protein content
- Bothriochloa bladhii
- yields
- cultivars
- fiber content
- weight
- species differences
- crude protein
- tillering
- tillers
- Cenchrus ciliaris
- Texas
- dry matter
- Library Collection RecordDense stands of honey mesquite (Prosopis glandulosa Torr. var. glandulosa) negatively impact livestock handling and herbaceus forage production; however, very little information is available on the…Publication Date 1997-09-01
- thinning
- agroforestry
- stand density
- Prosopis glandulosa var. glandulosa
- multiple land use
- rain
- biomass production
- semiarid zones
- Texas
- biomass
- Library Collection RecordGeneralized linear mixed models were used to obtain best linear unbiased predictions (BLUP's) of herbivore preferences for range plant species from expert knowledge contained in range site…Publication Date 1998-01-01
- deer
- resource utilization
- Edwards Plateau
- Cyperaceae
- mixed grazing
- interspecific competition
- legumes
- browse plants
- best linear unbiased prediction
- linear models
- forbs
- shrubs
- sheep
- goats
- cattle
- Texas
- grasses
- feeding preferences
- Library Collection RecordAshe juniper (Junius ashei, Buckholz) is increasing on most sites across the Edwards Plateau of Texas. It is the purpose of this investigation to document the influence of Ashe juniper tree size on…Publication Date 1997-09-01
- browse line
- light penetration
- size
- Juniperus ashei
- understory
- Odocoileus virginianus
- stocking rate
- goats
- Texas
- plant litter
- botanical composition
- canopy
- browsing
- grasses
- Library Collection RecordResults from 6 years of seeding trials in the Chihuahuan Desert indicated that establishment of introduced and native grass species responded directly to soil moisture at the 1.22 cm (0.5 in) depth,…Publication Date 1997-03-01
- forage production
- net present value
- valuation
- microclimate
- sowing
- seedbed preparation
- risk
- soil temperature
- economic analysis
- production costs
- arid lands
- stand establishment
- crop production
- Bouteloua gracilis
- Texas
- range management
- Eragrostis lehmanniana
- introduced species
- rangelands
- soil water
- Library Collection RecordSeed dormancy can hinder stand establishment and delay progress of genetic and plant improvement studies. Our objective was to evaluate the effect of 2 chemical seed treatments on germination and on…Publication Date 1997-03-01
- ethylene chlorohydrin
- Eragrostis superba
- sodium hypochlorite
- Panicum coloratum
- seed treatments
- Eragrostis curvula
- seedling emergence
- duration
- seedlings
- weight
- Texas
- seed germination
- seed dormancy
- sulfuric acid
- Library Collection RecordExpert judgment, standardized in a meaningful format, can be used to identify research/survey needs and to characterize areas of (dis)agreement in species responses, associated traits, and factors…Publication Date 1998-05-01
- experts
- probability analysis
- plants
- prescribed burning
- grazing intensity
- Texas
- range management
- Library Collection RecordWe studied resource partitioning between cattle and deer (Odocoileus virginianus Boddaert) within replicated treatments of continuous and short-duration grazing at heavy and moderate stocking rates.…Publication Date 1997-11-01
- interspecific competition
- browse plants
- continuous grazing
- Odocoileus virginianus
- stocking rate
- species differences
- forbs
- rotational grazing
- cattle
- Texas
- seasonal variation
- botanical composition
- grasses
- feeding preferences
- Library Collection RecordWe documented vegetation dynamics (April 1986-July 1989) as part of a larger study to understand botanical composition and nutritional components of cattle and deer diets under 2 grazing systems (…Publication Date 1997-11-01
- continuous grazing
- rain
- Odocoileus virginianus
- stocking rate
- forbs
- rotational grazing
- grazing intensity
- cattle
- Texas
- biomass
- seasonal variation
- botanical composition
- grasses
- feeding preferences
- Library Collection RecordThe objective of this study was to determine how rangeland hydrology of oak, juniper, bunchgrass and shortgrass vegetation types is altered by fire. The research was conducted at the Sonora…Publication Date 1997-03-01
- bunchgrass
- shortgrasses
- Aristida
- soil aggregates
- Juniperus ashei
- soil organic matter
- water yield
- Quercus virginiana
- woodland grasslands
- runoff
- prescribed burning
- sheep
- goats
- Texas
- sediment yield
- plant litter
- rangelands
- grazing
- infiltration
- grasses
- bulk density
- Library Collection RecordWe measured the impact of prescribed summer and winter burns on vegetation characteristics and spring abundance of birds in a Spartina/Paspalum grassland at Matagorda Island National Wildlife Refuge…Publication Date 1997-07-01
- species abundance
- wild birds
- Spartina
- environmental impact
- Paspalum
- grasslands
- vegetation management
- populations
- prescribed burning
- Texas
- Library Collection RecordThe effects of herbicide applications to kill honey mesquite (Prosopis glandulosa Torr.) on community diversity are poorly documented. Our objective was to test the hypothesis that herbicide…Publication Date 1997-03-01
- nontarget organisms
- rodents
- biodiversity
- wild birds
- Prosopis glandulosa
- triclopyr
- species diversity
- rain
- vegetation
- Texas
- canopy
- Library Collection RecordStanding forage biomass (SFB) and the percent of standing biomass composed of forbs (PCTF) were modeled across the growing season. Samples representing stages of plant maturity from early vegetative…Publication Date 1998-03-01
- neural networks
- forks
- wavelengths
- radiometry
- mathematical models
- grasslands
- prediction
- cutting date
- prairies
- biomass
- canopy
- Library Collection RecordManagement of grasslands subject to replacement by woody species requires an understanding of the scales and patterns of change and how to detect and express them. We used the Jornada del Muerto…Publication Date 1997-05-01
- mapping
- Landsat
- change
- ecological balance
- computer techniques
- remote sensing
- satellite imagery
- grasslands
- plant communities
- grazing
- New Mexico
- Library Collection RecordIn developing an improved understanding of the dynamics of understory plant composition and productivity in Coastal Plain forest ecosystems, we examined the influence of site preparation and…Publication Date 1998-01-01
- chopping
- Arkansas
- subsoil
- site preparation
- windrowing
- cultivation
- interspecific competition
- Pinus taeda
- phosphorus fertilizers
- 2,4-D
- Paspalum
- legumes
- understory
- ecological succession
- forest plantations
- Louisiana
- prescribed burning
- forbs
- biomass production
- shrubs
- Texas
- Pinus
- canopy
- grasses
- forage
- soil texture
- Library Collection RecordThis 10-year study was designed to evaluate vegetation response to increasing stocking rates under rotational stocking (3 days graze, 51 days rest) and long-term rest. The 4 stocking rate treatments…Publication Date 1997-07-01
- stocking rate
- rotational grazing
- Texas
- range management
- botanical composition
- livestock
- Library Collection RecordSeasonal wildlife observations were made along transects on 2 pastures in late seral and 2 pastures in mid seral condition in southcentral New Mexico in non-drought and drought years (1993, 1994).…Publication Date 1997-11-01
- seral stages
- wild birds
- arid zones
- wildlife
- climax communities
- grasslands
- rain
- pastures
- shrubs
- drought
- botanical composition
- New Mexico
- Library Collection RecordEstimates of carrying capacity for herbivores are useful for determining the relative value of different ranges. We compared 6 estimates of nutritional carrying capacity for white-tailed deer (…Publication Date 1997-01-01
- Zanthoxylum fagara
- digestible energy
- costs and returns
- grassland improvement
- semiarid grasslands
- carrying capacity
- estimation
- body weight
- Odocoileus virginianus
- natural grasslands
- shrubs
- nitrogen content
- Texas
- forage
- dry matter
- feed intake
- Library Collection RecordTo understand how different techniques might affect diet estimates for cattle, the esophageal-fistula and bite-count techniques were compared using trained cattle. For the Texas Coastal Bend, bite-…Publication Date 1995-11-01
- biting rates
- fistula
- estimation
- esophagus
- diet
- cattle
- Texas
- botanical composition
- grazing
- Library Collection RecordAn inexpensive method of tree felling is needed to precondition dense stands of mature junipers (Juniperus spp.) for the effective use of prescribed burning. The purpose of this research was to…Publication Date 1996-03-01
- felling
- drawbar power
- striking height
- Juniperus ashei
- Juniperus pinchotii
- height
- brush control
- species differences
- prescribed burning
- Oklahoma
- Texas
- Library Collection RecordCattle exclusion induced dramatic changes in the plant community and modifications in nutrient cycling in grazed native grasslands of the Flooding Pampa (Argentina). The study was carried out to…Publication Date 1996-09-01
- geostatistics
- soil organic matter
- nitrate nitrogen
- ammonium nitrogen
- spatial variation
- grasslands
- soil fertility
- statistical analysis
- nitrogen
- phosphorus
- Argentina
- Library Collection RecordThe objective of this 2 year study was to identify the optimal height to graze Old World bluestem pasture in the Southern Great Plains under continuous stocking during the growing season. We…Publication Date 1996-11-01
- performance
- evaporation
- leaves
- roots
- stems
- liveweight gain
- continuous grazing
- ambient temperature
- Bothriochloa ischaemum
- rain
- steers
- crude protein
- grazing intensity
- Texas
- biomass
- forage
- plant height
- Library Collection RecordLittle information is available comparing animal performance or stocking stability for different wheat (Triticum aestivum L.) cultivars. Wheat is annually planted on 10 million ha in the Southern…Publication Date 1996-03-01
- performance
- Triticum aestivum
- liveweight gain
- cultivars
- rain
- stocking rate
- steers
- Texas
- biomass
- seasonal variation
- grazing
- beef cattle
- forage
- Library Collection RecordReinvasion of mechanically disturbed juniper communities is possible through contributions from the soil seedbank, seed rain, and the juvenile seedling bank. We compared spatial distribution of the…Publication Date 1995-11-01
- Juniperus ashei
- woody weeds
- seed banks
- viability
- invasion
- seedlings
- spatial distribution
- Texas
- seed germination
- Library Collection RecordThere is a dearth of knowledge on the selection and utilization of Columbia milkvetch (Astragalus miser Dougl. ex Hook. var. serotinus) by grazing livestock on rangelands in British Columbia. Four…Publication Date 1996-05-01
- Astragalus miser
- miserotoxin
- poisoning
- British Columbia
- highlands
- woodland grasslands
- grasslands
- calves
- Pinus contorta
- palatability
- fiber content
- rain
- selective grazing
- forbs
- beef cows
- crude protein
- rangelands
- grasses
- Library Collection RecordSoil organic C, total N, extractable P, and salinity were evaluated after 12-16 years of protection from grazing in 2 native grassland sites which differed in frequency of soil waterlogging in the…Publication Date 1996-03-01
- flood meadows
- submergence
- inorganic phosphorus
- soil organic matter
- electrical conductivity
- site factors
- ratios
- grasslands
- soil salinity
- soil fertility
- forbs
- grazing intensity
- plant communities
- soil chemistry
- Argentina
- botanical composition
- grasses
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