Rangeland Ecology & Management
Get reliable science
Toggle Search
Result Type
Collection
Keywords
Document Type
Displaying 151 - 200 of 663 results
- Library Collection RecordInvasion of pristine grasslands by caldén (Prosopis caldenia Burkart), and increased densities of this species in savannas are well-known vegetation changes in the semiarid region of central…Publication Date 1998-11-01
- landscape ecology
- Prosopis
- savanna woodlands
- ecological succession
- population dynamics
- rain
- shrubs
- sheep
- cattle
- Argentina
- grazing
- Library Collection RecordA study was conducted in foothill rangelands during the fall to determine if livestock grazing distribution could be improved by strategic placement of dehydrated molasses supplement blocks (30%…Publication Date 1999-11-01
- terrain
- salt licks
- molasses
- weather
- hill grasslands
- protein content
- liveweight gain
- body weight
- slope
- feed supplements
- spatial distribution
- biomass
- Montana
- grazing
- beef cattle
- plant height
- Library Collection RecordGrazing distribution and forage use patterns are important influences on rangeland ecosystems. Spatial patterns of grazing by domestic cattle (Bos taurus) were observed over 2 consecutive years under…Publication Date 2000-01-01
- geographic information systems
- mathematical models
- prediction
- stocking rate
- rotational grazing
- spatial distribution
- grazing
- beef cattle
- Library Collection RecordDelaying calving season from late winter to late spring has been suggested as a way for producers in Wyoming and other high elevation areas of the West to reduce feeding costs. We hypothesized that…Publication Date 1999-11-01
- calf production
- calving season
- body fat
- alfalfa
- alfalfa hay
- computer software
- body condition
- mathematical models
- production costs
- winter
- spring
- beef cows
- hay
- profitability
- grazing
- Library Collection RecordIn the semi-arid Northern Great Plains, seeded cool-season grasses are primarily recommended for spring and fall grazing because their nutritive quality is perceived as too low to support acceptable…Publication Date 1999-05-01
- native grasslands
- physical activity
- Bromus inermis
- sown grasslands
- Agropyron desertorum
- liveweight gain
- duration
- stocking rate
- steers
- Pascopyrum smithii
- grazing intensity
- rangelands
- grazing
- North Dakota
- Library Collection RecordBecause of its high palatability and sustained levels of forage quality, antelope bitterbrush (Purshia tridentata Pursh DC) is one of the most desired shrubs on western U.S. rangelands. Bitterbrush…Publication Date 1999-03-01
- Purshia tridentata
- fire ecology
- mortality
- rain
- pastures
- selective grazing
- grazing intensity
- in vitro digestibility
- range management
- phenology
- seasonal variation
- botanical composition
- grazing
- grasses
- beef cattle
- plant height
- maturity stage
- Library Collection RecordSince settlement, cattle grazing has been a major cause of soil disturbance in cold desert ecosystems. The objective of this study was to determine the impact of cattle grazing in different seasons…Publication Date 1998-09-01
- cryptogams
- lichen crusts
- mosses and liverworts
- tillage
- deserts
- ground cover
- winter
- spring
- Idaho
- summer
- cattle
- grazing
- Library Collection RecordThe objective of this research was to determine, on a seasonal basis, the relative preferences of cattle for 7 native grasses and d crested wheatgrass (Agropyron desertorum (Fischer ex Link)Schultes…Publication Date 1998-09-01
- vegetative growth
- flowering
- dormancy
- Agropyron desertorum
- fiber content
- selective grazing
- Oregon
- crude protein
- cattle
- plant density
- biomass
- phenology
- plant litter
- botanical composition
- grazing
- feeding preferences
- Library Collection RecordEastern gamagrass (Tripsacum dactyloides (L.) L.) is a perennial warm-season bunchgrass that starts growth earlier in the spring than most other warm-season grasses. This suggests that combining…Publication Date 1999-11-01
- Tripsacum dactyloides
- Tripsacum
- protein content
- liveweight gain
- Bothriochloa ischaemum
- rain
- stocking rate
- Oklahoma
- grazing intensity
- in vitro digestibility
- biomass
- botanical composition
- nutritive value
- grazing
- beef cattle
- plant height
- maturity stage
- Library Collection RecordGrazing cattle on forest plantations in the interior of British Columbia (B.C.) is a common practice, but its impact on soil compaction is not well documented. This study evaluated the effects of…Publication Date 1999-11-01
- resistance to penetration
- British Columbia
- sown grasslands
- Pinus contorta
- forest plantations
- grazing intensity
- grazing
- infiltration
- soil compaction
- bulk density
- beef cattle
- Library Collection RecordSpring livestock grazing has been suggested as a tool to improve winter forage quality of bluebunch wheatgrass (Agropyron spicatum [Pursh] Scribn. & Smith). Impacts on plant vigor and survival…Publication Date 1998-09-01
- Pseudoroegneria spicata
- basal area
- Cervus elaphus
- winter
- spring
- cattle
- phenology
- defoliation
- grazing
- maturity stage
- Library Collection RecordA key was used to classify articles about livestock influences on riparian zones and fish habitat into 3 classes: papers that contained original data, those that were commentary, and reports about…Publication Date 1998-11-01
- data analysis
- field experimentation
- fish
- bibliographies
- streams
- experimental design
- habitats
- riparian buffers
- literature reviews
- grazing
- Library Collection RecordThe transition of range utilization from a qualitative concept in the early years of range management to a quantitative concept in today's range management science has been problematic. This…Publication Date 1999-03-01
- agricultural education
- growth rate
- range management
- grazing
- Library Collection RecordWe determined rates of western juniper (Juniperus occidentalis spp. occidentalis Hook.) density and cover change during the period 1951 to 1994 at 3 adjacent sites with nearly identical elevation,…Publication Date 1999-09-01
- population growth
- aerial photography
- grassland condition
- ground cover
- land use
- seed productivity
- ecological succession
- Juniperus occidentalis
- fires
- fire effects
- leaf area index
- Oregon
- Artemisia tridentata
- plant density
- plant competition
- grazing
- Library Collection RecordSpotted knapweed (Centaurea maculosa Lam.), an aggressive Eurasian forb, is replacing many native perennial grasses such as Idaho fescue (Festuca idahoensis Elmer.) on foothills of the Northern Rocky…Publication Date 1997-07-01
- Festuca idahoensis
- roots
- carbohydrates
- shoots
- weed control
- biomass production
- sheep
- Centaurea maculosa
- range management
- Montana
- plant competition
- grazing
- chemical constituents of plants
- Library Collection RecordFederal land grazing fees have been set by a formula that uses a base rate developed from a 1966 study comparing total grazing costs on private and public lands. A similar market comparison was…Publication Date 1997-05-01
- valuation
- federal government
- permits
- leasing
- private ownership
- production costs
- Idaho
- Wyoming
- grazing
- New Mexico
- forage
- Library Collection RecordMaintaining native plant diversity, detecting exotic species, and monitoring rare species are becoming important objectives in rangeland conservation. Four rangeland vegetation sampling techniques…Publication Date 1998-03-01
- Minnesota
- exotics
- steppes
- species diversity
- range condition
- South Dakota
- sampling
- Wyoming
- prairies
- botanical composition
- rangelands
- grazing
- Colorado
- Library Collection RecordThe effects of fall and spring sheep use on cover components and recovery following a change in seasonality of grazing practices, were studied within long-term grazing treatments of three-tip…Publication Date 1998-05-01
- Artemisia tripartita
- Balsamorhiza
- timing
- ground cover
- controlled grazing
- stocking rate
- Idaho
- semiarid zones
- sheep
- plant density
- botanical composition
- rangelands
- canopy
- grazing
- Library Collection RecordThe objective of this study was to determine if cattle that were familiar with white locoweed (Oxytropis sericea Nutt, ex T&G) could be aversively conditioned to avoid eating it. In the first…Publication Date 1997-07-01
- avoidance conditioning
- Oxytropis sericea
- cattle
- grazing
- feed intake
- Library Collection RecordThe larkspur mirid (Hopplomachus affiguratus) is host specific to tall larkspur (Delphinium barbeyi Huth). These insects suck cell solubles from leaves and reproductive racemes, causing flowers to…Publication Date 1997-07-01
- hopplomachus affiguratus
- prevention
- damage
- biological control agents
- leaves
- poisoning
- flowers
- Delphinium barbeyi
- cattle
- Utah
- grazing
- feeding preferences
- poisonous plants
- Library Collection RecordA series of summer grazing studies were conducted to evaluate cattle consumption of preflowering tall larkspur (Delphinium barbeyi [Huth] or D. occidentale [Wats.] Wats.) on mountain rangeland in…Publication Date 1997-07-01
- concentration
- Delphinium occidentale
- leaves
- alkaloids
- poisoning
- flowers
- Delphinium barbeyi
- Idaho
- cattle
- range management
- Utah
- grazing
- Colorado
- poisonous plants
- Library Collection RecordLeafy spurge (Euphorbia esula L), an aggressive Eurasian forb, is invading native upland ranges dominated by bluebunch wheatgrass (Pseudoroegneria spicata [Pursh] A. Love) and Idaho fescue (Festuca…Publication Date 1998-03-01
- Festuca idahoensis
- Pseudoroegneria spicata
- seed banks
- Euphorbia esula
- Idaho
- sheep
- plant density
- grazing
- plant height
- Library Collection RecordSpotted knapweed (Centaurea Maculosa Lam.), a Eurasian perennial forb, is replacing many native perennial grasses, such as Idaho fescue (Festuca idahoensis Elmer.), in foothills of the Northern Rocky…Publication Date 1997-07-01
- native plants
- Festuca idahoensis
- weed control
- seedlings
- Idaho
- plant communities
- sheep
- plant density
- Centaurea maculosa
- range management
- grazing
- Library Collection RecordWe tested the hypothesis that prior grazing history would influence the defoliation responses of Idaho fescue (Festuca idahoensis) growing in a common garden environment. Plants were taken from a…Publication Date 1997-05-01
- Festuca idahoensis
- stomata
- transpiration
- photosynthesis
- gas exchange
- xylem water potential
- defoliation
- grazing
- 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 RecordExtensive rangelands and other vegetation types that we know today formed while atmospheric carbon dioxide (CO2) concentration was low (50 to 75% of today's concentration). Fossil fuel burning…Publication Date 1997-11-01
- long term experiments
- C3 plants
- respiration
- plant-water relations
- C4 plants
- biogeochemical cycles
- stomatal conductance
- plant ecology
- carbon dioxide
- atmosphere
- photosynthesis
- species differences
- biomass production
- botanical composition
- rangelands
- literature reviews
- grazing
- grasses
- Library Collection RecordThe objective of this study was to create and maintain a long lasting aversion to tall larkspur (Delphinium barbeyi Huth) under field grazing conditions. Two grazing trials were conducted: the first…Publication Date 1997-07-01
- poisoning
- avoidance conditioning
- grazing trials
- Delphinium barbeyi
- feeding behavior
- cattle
- grazing
- Colorado
- poisonous plants
- Library Collection RecordMismanagement of livestock can result in herbivory on Pinus seedlings with potential for growth loss. From 1986 to 1990 on a conifer plantation in the Mixed-Conifer Zone of southwestern Oregon we…Publication Date 1998-03-01
- apical meristems
- timing
- Pinus ponderosa
- seedlings
- Oregon
- browsing damage
- cattle
- grazing
- plant height
- Library Collection RecordWe compared the forage preferences of steers grazing among 8 varieties of grasses at 2 stages of phenology on the Northern Great Basin Experimental Range near Burns, Ore. Varieties included: '…Publication Date 1997-11-01
- Leymus cinereus
- Elymus lanceolatus
- density
- moisture content
- interspecific hybridization
- Pseudoroegneria spicata
- biting rates
- Psathyrostachys juncea
- mineral content
- Agropyron desertorum
- palatability
- fiber content
- leaf area index
- chemical composition
- selective grazing
- Oregon
- steers
- crude protein
- in vitro digestibility
- biomass
- phenology
- grazing
- feeding preferences
- plant height
- maturity stage
- Library Collection RecordPrevious heavy grazing for more than 50 years, compared with protection from livestock grazing, in the semi-arid area of Chaco Canyon in the southwestern United States did not result in any…Publication Date 1998-01-01
- recalcitrant seeds
- genetic change
- strain differences
- Achnatherum hymenoides
- scarification
- viability
- frequency
- seed weight
- seed productivity
- cultivars
- seed germination
- seed dormancy
- defoliation
- grazing
- New Mexico
- Colorado
- Library Collection RecordDegree-days required for standing crop and above-ground net primary production of northern wheatgrass (Agropyron dasystachyum [Hook.] Scribn., syn. Elymus lanceolatus [Scrib. &Smith] Gould) mowed…Publication Date 1998-01-01
- etiolated growth
- mowing
- Elymus lanceolatus
- heat sums
- harvest date
- etiolation
- ambient temperature
- Saskatchewan
- rain
- photosynthesis
- nitrogen content
- biomass
- grazing
- Library Collection RecordMany producers believe cattle grazing wheat pasture during the winter are likely to graze actively growing locoweed when turned onto short-grass prairie in the spring. White locoweed (Oxytropis…Publication Date 1997-05-01
- toxins
- warm-season grasses
- cool-season grasses
- Triticum aestivum
- swainsonine
- Oxytropis sericea
- winter
- spring
- selective grazing
- steers
- natural grasslands
- grazing
- grasses
- New Mexico
- feeding preferences
- Library Collection RecordEnergy cost of various activities can be used in conjunction with direct field observations to estimate energy expended in the daily activities of free-ranging animals. The objective of this study…Publication Date 1997-05-01
- walking
- heat production
- physical activity
- energy cost of activities
- energy requirements
- Spain
- goats
- seasonal variation
- pasture plants
- grazing
- Library Collection RecordDespite extensive coverage and long-term use, the extent to which shadscale [Atriplex confertifolia (Torr. &Frem.) Wats.] community dynamics are driven by grazing rather than by climate and…Publication Date 1998-03-01
- artemisia spinescens
- Hilaria
- Sporobolus cryptandrus
- Achnatherum hymenoides
- Atriplex confertifolia
- rain
- Krascheninnikovia lanata
- sheep
- biomass
- seasonal variation
- Utah
- canopy
- grazing
- Library Collection RecordMost farms in the semi-arid region of Morocco are mixed cereal-livestock producers. Livestock, dominated by sheep, account for more than one third of farm income but production is far below potential…Publication Date 1998-05-01
- wool production
- Medicago polymorpha
- Medicago truncatula
- ley farming
- Morocco
- fallow
- lambs
- ewes
- liveweight gain
- body weight
- rain
- semiarid zones
- sheep
- drought
- grazing
- 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 RecordThis paper de-analyses a recent paper by Roe (1997, J. Range Manage., 50:467-472) entitled Viewpoint: On Rangeland Carrying Capacity. This response to that paper: (1) examines and demonstrates the…Publication Date 1998-07-01
- grazing
- capacity
- stocking level
- range management science
- Library Collection RecordSome have argued that federal grazing preferences or permits are a form of private property and should be recognized as such by the federal government. This viewpoint studies the grazing controversy…Publication Date 1997-07-01
- legal rights
- public domain
- pastures
- United States
- grazing
- Library Collection RecordThe value of science to policy design is questioned by many, including political scientists. Critics view scientific expertise as subject to monopolization by an elite technocracy; a process with…Publication Date 1997-05-01
- decision making
- issues and policy
- democracy
- range management
- grazing
- Library Collection RecordSoil nutrients in topsoils (0-7.5 cm) on grazed hilly and steep land on 2 high country sheep farms with contrasting climate in the upper Waitaki district, South Island, New Zealand, were compared…Publication Date 1996-07-01
- cation exchange capacity
- upland soils
- topsoil
- New Zealand
- sown grasslands
- highlands
- pH
- sustainability
- sheep
- grazing
- Library Collection RecordIn a recent JRM article, Singer et al. (1994) report results of a willow (Salix spp.) study on the northern (ungulate winter) range of Yellowstone National Park (YNP) and immediate vicinity. The…Publication Date 1995-09-01
- stress response
- Yellowstone National Park
- national parks
- Salix
- browse plants
- winter
- tannins
- Wyoming
- grazing intensity
- Cervus elaphus canadensis
- grazing
- Library Collection RecordDiets determined by bite count and microhistological analysis of esophageal extrusa and feces were compared for steers grazing on grass-shrublands in the northern Chihuahuan Desert. The study was…Publication Date 1997-01-01
- biting rates
- arid grasslands
- accuracy
- fistula
- continuous grazing
- feces composition
- esophagus
- diet
- rotational grazing
- steers
- botanical composition
- grazing
- New Mexico
- beef cattle
- 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 RecordResearch was conducted to determine the effect of clipping height on forage yield and quality of 3 wetland meadow plant associations. Bluegrass-clover (Poa spp. and Trifolium spp.), grass-sedge (Poa…Publication Date 1996-03-01
- poa lieburgii
- cutting height
- flood meadows
- Poa
- Trifolium repens
- Deschampsia cespitosa
- Carex
- Poa pratensis
- cutting date
- yields
- fiber content
- Oregon
- crude protein
- plant communities
- grazing
- dry matter
- Library Collection RecordGrazed and ungrazed sites subjected to different fire frequencies were sampled on the Konza Prairie Research Natural Area in northeast Kansas after 4 years of bison grazing (1987-1991). The objective…Publication Date 1996-09-01
- biodiversity
- bison
- topography
- frequency
- Kansas
- fires
- plant communities
- prairies
- botanical composition
- grazing
- Library Collection RecordThe effects of reducing sheep grazing on upland vegetation and wild herbivores was studied at 11 sites in the Scottish Highlands. Areas where sheep had been removed for periods of up to 25 years were…Publication Date 1996-07-01
- Scotland
- sward
- voles
- sheep manure
- ecological succession
- Cervus elaphus
- stocking rate
- prescribed burning
- plant communities
- sheep
- botanical composition
- rangelands
- canopy
- grazing
- plant height
- Library Collection RecordGrass shoots after defoliation can be supplied with the nitrogen required for regrowth by either root uptake or remobilization of stores. Whilst it is accepted that after a single defoliation…Publication Date 1996-09-01
- Lolium perenne
- clipping
- Festuca rubra
- Agrostis castellana
- Poa trivialis
- leaves
- roots
- nutrient availability
- shoots
- nutrient uptake
- growth
- nitrogen content
- defoliation
- grazing
- 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 RecordChina, with one of the largest grassland and pastoral areas of the world, is placing major effort on sustainable modernization of its rangeland livestock industry. One widely discussed structural…Publication Date 1996-11-01
- profitability
- metabolizable energy
- beef production
- finishing
- feedlots
- China
- protein intake
- energy intake
- feeds
- crude protein
- cattle feeding
- grazing
- beef cattle
- Library Collection RecordFecal microhistology and chemistry were used to evaluate botanical composition and quality of diets selected by Brangus cattle grazing Chihuahuan desert range in 3 seasons; fall: October, 1991;…Publication Date 1995-11-01
- phenotypic correlation
- sires
- free range husbandry
- genetic variance
- autumn
- heritability
- feces composition
- Brangus
- pastures
- spring
- summer
- biomass
- botanical composition
- grazing
- New Mexico
- beef cattle
- feeding preferences
Pagination
- First page
- Previous page
- …
- 2
- 3
- 4
- 5
- 6
- …
- Next page
- Last page