Rangeland Ecology & Management
Get reliable science
Toggle Search
Result Type
Collection
Keywords
Document Type
Displaying 101 - 150 of 996 results
- Library Collection RecordExcessive cover of juniper (Juniperus pinchotii Sudw.) reduces forage production, interferes with livestock management, and diminishes the watershed and wildlife habitat values of rangelands. We…Publication Date 2001-11-01
- basal area
- Juniperus pinchotii
- Bouteloua curtipendula
- Buchloe dactyloides
- Hilaria mutica
- soil temperature
- Prosopis glandulosa
- soil fertility
- invasion
- weed control
- seedlings
- growth rate
- Texas
- botanical composition
- plant competition
- canopy
- plant height
- competition
- facilitation
- mesquite rangeland
- seedling establishment
- Library Collection RecordSand shinnery oak (Quercus havardii Rydb.) communities are shrublands extending from northern Texas and western Oklahoma southward into the Chihuahuan Desert. They are dominated by sand shinnery oak…Publication Date 2001-11-01
- brush control
- fire ecology
- fires
- fire effects
- Quercus havardii
- prescribed burning
- Oklahoma
- plant communities
- shrubs
- range management
- botanical composition
- plant competition
- canopy
- plant height
- lesser prairie-chicken
- northern bobwhite
- prairies
- shrublands
- succession
- stability
- vegetation structure
- woody plants
- Library Collection RecordThere has been increasing concern that training on military lands results in excessive soil erosion, ecosystem degradation, and loss of sustainable training resources. Vegetation structure has been…Publication Date 2001-11-01
- wind erosion
- wind tunnels
- military areas
- battletanks
- tracked vehicles
- all-terrain vehicles
- grassland condition
- surface roughness
- ground cover
- ground vegetation
- Idaho
- forbs
- losses from soil
- plant litter
- botanical composition
- grasses
- erosion
- threshold friction velocity
- threshold wind speed
- arid lands
- surface roughness
- military lands
- wind tunnels
- Library Collection RecordA revegetation techniques study was initiated during the fall of 1976 in northwestern Colorado in a disturbed sagebrush (Artemisia tridentata Nutt.) community. The study included 2 irrigation…Publication Date 2001-11-01
- seed mixtures
- irrigated conditions
- plant introduction
- sowing
- sown grasslands
- semiarid grasslands
- stand establishment
- species diversity
- ecological succession
- forbs
- Artemisia tridentata
- plant communities
- shrubs
- land restoration
- application rates
- fertilizer
- biomass
- introduced species
- botanical composition
- grasses
- Colorado
- seeding
- seed mixtures
- fertilization
- irrigation
- succession
- reclamation
- restoration
- Library Collection RecordThis study identifies the characteristics and attitudes of public land ranchers. Data from a random survey of 2,000 U.S. Forest Service and Bureau of Land Management grazing permittees (53.5%…Publication Date 2002-01-01
- socioeconomic status
- cultural values
- intensification
- ranges
- farm income
- grazing tenancy
- livestock numbers
- management
- farm size
- public domain
- ranching
- farmers' attitudes
- Western United States
- demography
- grazing intensity
- sheep
- beef cattle
- grazing fees
- grazing reduction
- grazing season
- public land property
- Library Collection RecordInformed management of large herbivores depends largely on how well habitat availability and suitability are understood. The aims of the study were to quantify and map the distribution of sour and…Publication Date 2002-03-01
- game reserves
- sourveld
- mixed veld
- game animals
- mapping
- habitat selection
- habitats
- satellite imagery
- multispectral imagery
- South Africa
- veld
- natural grasslands
- plant communities
- wildlife management
- biomass
- botanical composition
- wildlife
- GIS
- remote sensing
- Landsat
- ground-truthing
- Library Collection RecordA 3-year study was conducted to evaluate grazing strategies for production of growing cattle during summer on Northern Great Plains rangeland. Crossbred yearling steers (N = 123 per year, avg initial…Publication Date 2002-03-01
- liveweight gain
- body weight
- fiber content
- stocking rate
- steers
- crude protein
- natural grasslands
- summer
- precipitation
- grazing intensity
- in vitro digestibility
- biomass
- botanical composition
- Montana
- beef cattle
- forage
- grazing management
- beef cattle
- protein supplementation
- Library Collection RecordIn August 1994, wildfire burned 6,500 ha of native Dry Mixed Prairie in southeastern Alberta. The following year, a study was initiated to monitor the recovery of major plant communities. Burning was…Publication Date 2002-03-01
- Koeleria macrantha
- Elymus lanceolatus
- Hesperostipa comata
- wildfire management
- Agropyron
- ground cover
- fires
- fire effects
- Alberta
- forbs
- Pascopyrum smithii
- Bouteloua gracilis
- precipitation
- biomass production
- grazing intensity
- prairies
- drought
- range management
- plant litter
- botanical composition
- canopy
- grazing
- grasses
- beef cattle
- Stipa
- composition
- forage
- litter
- preference
- production
- topography
- Library Collection RecordThe Mixed Prairie plant communities developed with the influences of fire and grazing. Available evidence suggests that removal of these disturbances could cause succession toward a more mesic type…Publication Date 2002-05-01
- A horizons
- carbon
- chernozemic soils
- solonetzic soils
- soil depth
- species diversity
- range condition
- Alberta
- nitrogen
- phosphorus
- pH
- grazing intensity
- soil chemistry
- prairies
- biomass
- plant litter
- botanical composition
- soil water
- soil nitrogen
- soil depth
- botanical composition
- plant biomass
- plant nitrogen
- Library Collection RecordPoisonous plants that impair normal reproductive functions in livestock include Veratrum californicum Durand, lupines, ponderosa pine (Pinus ponderosa Dougl.), broom snakeweed (Gutierrezia sarothrae…Publication Date 2002-05-01
- teratogens
- abortion
- mechanism of action
- Oxytropis
- Astragalus
- alkaloids
- Lupinus
- controlled grazing
- Pinus ponderosa
- reproductive performance
- species differences
- cattle
- range management
- literature reviews
- poisonous plants
- poisonous plants
- lupine
- locoweed
- ponderosa pine
- reproduction
- management
- Library Collection RecordRangeland ecological condition was monitored over a 48 year period on 41 sites on Bureau of Land Management rangelands scattered across 6 counties in southwestern New Mexico. All sites were grazed by…Publication Date 2002-07-01
- arid grasslands
- ground cover
- semiarid grasslands
- range condition
- precipitation
- sustainability
- grazing intensity
- plant communities
- drought
- range management
- botanical composition
- New Mexico
- beef cattle
- rangeland condition
- succession
- drought
- grazing management
- plant ecology
- 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 RecordA grazing system which allows cattle to select a season-long diet more nearly meeting their nutrient requirements should facilitate optimal weight gains. A study was conducted near Mandan, N. D.…Publication Date 2002-09-01
- native ranges
- Bromus inermis
- Agropyron desertorum
- protein content
- liveweight gain
- fiber content
- chemical composition
- pastures
- Pascopyrum smithii
- in vitro digestibility
- botanical composition
- grazing
- beef cattle
- feeding preferences
- North Dakota
- animal behavior
- crested wheatgrass
- western wheatgrass
- smooth bromegrass
- Library Collection RecordBlack-tailed prairie dogs have declined by 98% in the past century. Due to continued declines, the U. S. Fish and Wildlife Service designated the species as a candidate for listing in 2000. Prairie…Publication Date 2002-09-01
- Aristida purpurea
- Cynomys ludovicianus
- Bouteloua curtipendula
- Buchloe dactyloides
- habitats
- Kansas
- species diversity
- shortgrass prairie
- vegetation
- Bouteloua gracilis
- plant density
- botanical composition
- canopy
- Colorado
- black-tailed prairie dogs
- Cynomys ludovicianus
- cover
- bare ground
- frequency
- shortgrass prairie
- herbivory
- soil disturbance
- Library Collection RecordFires were once a natural part of most savanna ecosystems, but lack of fine fuel and an active suppression policy have changed fire frequency and seasonality. Re-introducing fires to these systems…Publication Date 2002-09-01
- fire intensity
- Acacia
- shrublands
- Prosopis glandulosa
- brush control
- savannas
- ecological succession
- population structure
- shortgrass prairie
- prescribed burning
- forbs
- plant density
- Texas
- botanical composition
- canopy
- grasses
- fire frequency
- seasonality
- prescribed burns
- Prosopis glandulosa
- Acacia
- detrended correspondence analysis
- ordination
- Library Collection RecordRangeland plant productivity and species composition are affected by moisture availability and grazing intensity. We examined warm- and cool-season grass productivity and relative distribution on…Publication Date 2002-09-01
- root systems
- soil water content
- Pascopyrum smithii
- Bouteloua gracilis
- precipitation
- Wyoming
- grazing intensity
- biomass
- seasonal variation
- botanical composition
- mixed-grass prairies
- species composition
- water stress
- Library Collection RecordWe used microhistological analyses of fresh fecal pellets to determine seasonal diets of desert bighorn sheep (Ovis canadensis mexicana Merriam 1901) in northwestern Sonora, Mexico from April 1997 to…Publication Date 2002-11-01
- species reintroduction
- Ovis canadensis mexicana
- Ovis canadensis
- browse plants
- gender differences
- Mexico
- feces composition
- forbs
- diets
- wildlife management
- seasonal variation
- botanical composition
- browsing
- grasses
- Ovis canadensis mexicana
- sexual segregation
- Library Collection RecordThere are several generalizations or assumptions concerning rangeland hydrology and erosion relationships found in the literature and in the management arena. These generalizations have found their…Publication Date 2002-11-01
- sheet erosion
- mixed-grass prairies
- tallgrass prairie
- rangeland soils
- Rocky Mountain region
- hydrology
- ground cover
- semiarid grasslands
- Artemisia
- mathematical models
- Carex
- brush control
- steppe soils
- range condition
- equations
- shortgrass prairie
- runoff
- rainfall simulators
- forbs
- soil water content
- plant communities
- California
- prairies
- biomass
- sediment yield
- plant litter
- botanical composition
- rangelands
- canopy
- infiltration
- grasses
- prairie soils
- rangeland hydrology
- infiltration
- erosion
- hydrologic modeling
- Library Collection RecordThe development of successful regional or national invasive weed control programs is often hampered by the way the problem is approached. Typically weed control programs are developed and evaluated…Publication Date 2003-01-01
- Aphthona
- Aphthona nigriscutis
- Aphthona lacertosa
- perennial weeds
- teamwork
- biological control agents
- USDA
- integrated pest management
- economic impact
- biological control
- Euphorbia esula
- ranching
- cost-benefit analysis
- invasion
- herbicides
- weed control
- South Dakota
- chemical control
- Wyoming
- sheep
- range management
- botanical composition
- Montana
- grazing
- North Dakota
- biological control
- Aphthona
- Weeds
- invasive species
- success
- integrated pest management
- Library Collection RecordFood habits of plains vizcacha (Lagostomus maximus), greater rhea (Rhea americana) and cattle (Bos taurus) in the Parana? River Delta, Argentina, were studied over 2 years using microhistological…Publication Date 2003-01-01
- Rhea
- Prosopis nigra
- Rhea americana
- ecological competition
- Lagostomus maximus
- vertebrate pests
- forage legumes
- wetlands
- feces composition
- forbs
- diet
- shrubs
- cattle
- seasonal variation
- Argentina
- botanical composition
- pasture plants
- grazing
- grasses
- diet composition
- herbivory
- Lagostomus maximus
- Paraná River Delta
- Rhea americana
- Library Collection RecordElk sedge (Carex geyeri Boott) is one of the most important livestock and big game forages in many areas of the western U.S. It is one of the most prominent forage species in the diets of cattle and…Publication Date 2003-01-01
- Physocarpus opulifolius
- date
- Festuca
- Carex geyeri
- Carex
- protein content
- Pinus ponderosa
- fiber content
- Pseudotsuga menziesii
- chemical composition
- Oregon
- crude protein
- plant communities
- phenology
- seasonal variation
- botanical composition
- nutritive value
- forage
- Carex geyeri
- cattle
- graminoids
- nutrition
- phenology
- season
- Library Collection RecordAfter wildfires in 1996 in the sagebrush (Artemisia spp.) and pinyon-juniper (Pinus spp.–Juniperus spp.) zones of west-central Utah, the USDI-BLM attempted to reduce soil erosion and cheatgrass…Publication Date 2003-01-01
- aerial sowing
- revegetation plants
- erosion control
- rehabilitation
- biodiversity
- Elytrigia intermedia subsp. intermedia
- sowing
- wildfire management
- sown grasslands
- Artemisia
- species diversity
- Agropyron cristatum
- weed control
- fires
- fire effects
- Bromus tectorum
- plant communities
- botanical composition
- Pinus
- Juniperus
- plant competition
- invasive species
- Utah
- Elytrigia elongata
- Bureau of Land Management
- rehabilitation
- chaining
- serial seeding
- plant material
- cheatgrass
- Library Collection RecordThe role of livestock grazing and big-game browsing in the decline of aspen (Populus tremuloides Michx.) in the Intermountain West has long been questioned. All known aspen exclosures (n=8) on the…Publication Date 2000-03-01
- natural regeneration
- national forests
- understory
- Populus tremuloides
- grazing intensity
- Odocoileus hemionus
- Cervus elaphus canadensis
- botanical composition
- Utah
- grazing
- beef cattle
- Populus tremuloides communities
- reproduction
- decline
- cattle grazing
- deer browsing
- elk browsing
- undergrowth
- Library Collection RecordThe influence of cattle grazing on carbon cycling in the mixed grass prairie was investigated by measuring the CO(2) exchange rate in pastures with a 13 year history of heavy or light grazing and an…Publication Date 2000-03-01
- Artemisia frigida
- Sphaeralcea coccinea
- Hesperostipa comata
- biogeochemical cycles
- Carex
- carbon dioxide
- air temperature
- rain
- photosynthesis
- gas exchange
- Pascopyrum smithii
- Wyoming
- grazing intensity
- prairies
- botanical composition
- beef cattle
- soil water
- grazing
- productivity
- photosynthesis
- soil respiration
- species composition
- Library Collection RecordThree watersheds at the University of California's Sierra Foothill Research and Extension Center (SFREC), Marysville, Calif. were selected to study cattle grazing effects on the vegetation…Publication Date 2000-03-01
- springs (water)
- ground cover
- highlands
- species diversity
- riparian buffers
- body weight
- plant communities
- California
- cattle
- plant litter
- botanical composition
- grazing
- dry matter
- Library Collection RecordQuantitative techniques are needed to determine the effects of cultivation and livestock grazing on biological indicators of soils of the Northern Great Plains. Our objective was to determine how…Publication Date 2000-03-01
- ecotypes
- cultivation
- abandoned land
- fallow
- black soils
- oxidoreductases
- phosphoric monoester hydrolases
- bioindicators
- soil zonation
- brown soils
- dark brown soils
- soil organic matter
- moisture content
- enzyme activity
- Hesperostipa comata
- sowing
- Nassella viridula
- Bouteloua
- Agropyron
- soil types
- Festuca campestris
- soil fertility
- Alberta
- nitrogen content
- prairies
- introduced species
- botanical composition
- Library Collection RecordTo examine the effect of grazing and potential interactions among grazing and biological traits of plants, we studied patch dynamics, seed production, and seedling survival in a Mediterranean…Publication Date 2000-05-01
- annuals
- recruitment
- Spain
- Phalaris aquatica
- perennials
- mortality
- rain
- seedlings
- stocking rate
- sward destruction
- tillering
- grazing intensity
- overgrazing
- cattle
- drought
- botanical composition
- Mediterranean grassland
- overgrazing
- perennial grasses
- plant recruitment
- seedling survival
- summer-drought
- Library Collection RecordIn Argentina, Paspalum quadrifarium Lam. (paja colorada) forms tall dense grassland communities in the flooding pampas. Referred to locally as “pajonales”, these grasslands generally have very low…Publication Date 2000-05-01
- 2,4-DB
- Botrytis cinerea
- Fusarium
- Uromyces
- Stemphylium
- fungal diseases of plants
- uromyces loti
- Lotus glaber
- Paspalum quadrifarium
- dicamba
- burning
- sown grasslands
- Paspalum
- stand establishment
- weed control
- regrowth
- Argentina
- botanical composition
- Paspalum quadrifarium
- Lotus tennuis
- fire
- weed control
- disease
- species diversity
- Library Collection RecordSpotted knapweed (Centaurea maculosa Lam.) management may be enhanced by integrating strategies that stimulate and maintain competitive grasses. The objective of this study was to determine if…Publication Date 2000-05-01
- NPK fertilizers
- ground cover
- weed control
- plant density
- picloram
- Centaurea maculosa
- application rates
- biomass
- botanical composition
- Montana
- defoliation
- grazing
- simulation
- Centaurea maculosa
- integrated weed management
- grass defoliation
- grazing management
- Library Collection RecordWestern ragweed [Ambrosia psilostachya DC. ], a major forb species in mixed and tallgrass prairies, is considered to have little value for cattle grazing but is an important food item for bobwhite…Publication Date 2000-05-01
- height-weight ratio
- tallgrass prairie
- mixed prairie
- mixed pastures
- Ambrosia psilostachya
- growth curve
- rain
- Oklahoma
- plant communities
- plant density
- prairies
- biomass
- botanical composition
- plant competition
- grazing
- grasses
- Ambrosia psilostachya
- plant competition
- grazing effects
- Library Collection RecordCrested wheatgrass (Agropyron cristatum (L.) Gaertn.) is an introduced grass used extensively for rangeland revegetation in the semiarid and arid regions of western North America. The long-term…Publication Date 2000-05-01
- resistance to penetration
- soil physical properties
- carbon
- Pseudoroegneria spicata
- soil density
- soil properties
- British Columbia
- roots
- species diversity
- Agropyron cristatum
- nitrogen content
- biomass
- botanical composition
- infiltration
- soil compaction
- Soil C
- soil N
- penetration resistance
- aggregate stability
- root biomass
- bluebunch wheatgrass
- Library Collection RecordFlorida native range is grazed in winter and cows are moved to bahiagrass (Paspalum notatum Flugge) pasture in March for breeding and calf rearing. Winter weight loss of cows is a major problem, and…Publication Date 2000-07-01
- weaning
- pregnancy rate
- breeding season
- weaning weight
- sown grasslands
- weight losses
- Paspalum notatum
- liveweight gain
- calves
- body weight
- rain
- Florida
- pastures
- spring
- beef cows
- summer
- grazing
- native forage
- cattle
- reproduction
- weight change
- management
- Library Collection RecordThe objective of this study was to provide a tool for maintaining a high grazing efficiency. In a rotational grazing system, the residual sward height does not provide enough information in advance…Publication Date 2000-07-01
- France
- assessment
- ewes
- heat sums
- dairy cows
- nitrogen balance
- volume determination
- controlled grazing
- stocking rate
- rotational grazing
- grazing intensity
- biomass
- plant height
- herbage height
- nitrogen
- stocking rate
- management
- dairy farms
- Library Collection RecordThis study examined the effects of late growing-season (September) wildfire on the subsequent production and species composition of upland Nebraska Sandhills prairie vegetation. Three paired-plots (…Publication Date 2000-07-01
- Cyperaceae
- Schizachyrium scoparium
- soil temperature
- fires
- fire effects
- Nebraska
- forbs
- plant communities
- biomass
- range management
- botanical composition
- rangelands
- grasses
- burning
- species composition
- herbage standing crop
- soil temperature
- Library Collection RecordA 6-year experiment examined the effects of spring and summer fires on grasses in southern Wisconsin. Synthetic communities of C3 and C4 grasses were seeded (100 seeds m-2 species-1) in 1992 and…Publication Date 2000-07-01
- sporobolus heterolepis
- Phalaris arundinacea
- C4 grasses
- C3 grasses
- Wisconsin
- Elymus trachycaulus
- Sporobolus
- sown grasslands
- crop-weed competition
- Poa pratensis
- species diversity
- ecological succession
- weed control
- fires
- fire effects
- spring
- Panicum virgatum
- prescribed burning
- Andropogon gerardii
- summer
- biomass production
- plant communities
- plant litter
- botanical composition
- grasses
- C3 grass
- C4 grass
- fire season
- ecological restoration
- tallgrass prairie
- Library Collection RecordLong-term cultivation is known to change soil physical and chemical properties, but little is known about whether short-term agricultural practices, such as rotational grazing, can initiate such…Publication Date 2000-09-01
- Hordeum vulgare
- carbon
- water holding capacity
- Bromus inermis
- Bromus riparius
- triticale
- soil properties
- soil depth
- electrical conductivity
- sown grasslands
- mineral content
- soil pH
- soil test values
- Alberta
- potassium
- rotational grazing
- grazing intensity
- nitrogen content
- botanical composition
- beef cattle
- carbon
- electrical conductivity
- nitrogen
- potassium
- soil pH
- Library Collection RecordStocking rate directly influences the frequency and intensity of defoliation of individual plants which, in turn, impacts energy flow and plant succession in grazed ecosystems. The objective of this…Publication Date 2000-09-01
- Bothriochloa saccharoides
- Aristida purpurea
- Aristida purpurea var. longiseta
- Bothriochloa
- Bouteloua curtipendula
- continuous grazing
- range condition
- ecological succession
- rain
- stocking rate
- forbs
- Oklahoma
- biomass
- botanical composition
- grasses
- beef cattle
- standing crop
- plant succession
- grazing impacts
- Bouteloua
- Aristida
- Library Collection RecordThe Ecological Index Method impacted directly on the estimation of grazing capacities in the Karoo, an arid region in South Africa. Due to inherent deficiencies in the ecological index method, index…Publication Date 2000-09-01
- Limax
- pioneer species
- agronomic traits
- arid grasslands
- carrying capacity
- nutrient requirements
- climax communities
- South Africa
- veld
- estimation
- digestibility
- sheep
- range management
- botanical composition
- nutritive value
- canopy
- grasses
- available dry matter production
- canopy spread cover
- current grazing capability
- [K divided by (Ca + Mg)
- total digestible nutrients
- Library Collection RecordThe objective of the experiment was to examine the effects of different stocking densities (3.7, 4.6, and 5.5 cows ha- l) on tiller density, botanical composition, and chemical (crude protein [CP],…Publication Date 2000-11-01
- flowering date
- Trifolium repens
- heat sums
- sward
- dairy cows
- Spain
- Lolium perenne
- sown grasslands
- mineral content
- protein content
- fiber content
- rain
- stocking rate
- sward destruction
- potassium
- phosphorus
- magnesium
- calcium
- dietary mineral supplements
- rotational grazing
- tillering
- seasonal variation
- botanical composition
- maturity stage
- Lolium
- stocking rate
- Trifolium
- Library Collection RecordPresence of 2 large herbivores in the same rangeland makes assessment of proper stocking rates and management practices rather complex. This study evaluated composition and overlap of red deer and…Publication Date 2000-11-01
- mixed grazing
- Prosopis
- Cervus elaphus
- stocking rate
- species differences
- diet
- seasonal variation
- Argentina
- botanical composition
- rangelands
- beef cattle
- browsing
- intermediate feeders
- grass users
- rangeland use
- range diets
- multi-species programs
- 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 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 RecordRotational stocking is a component of intensive pasture management and involves the systematic movement of animals among paddocks to optimize harvest of digestible nutrients. The optimum period of…Publication Date 2001-01-01
- body fat
- carcass quality
- Nova Scotia
- seasonal cycle
- yellow fat
- intensive livestock farming
- Trifolium
- frequency
- liveweight gain
- finishing
- rotational grazing
- biomass
- botanical composition
- beef cattle
- average daily gain
- period of stay
- repeated measures
- rotational grazing
- white clover
- yellow fat
- Library Collection RecordThe effects of animal age and sex on chemical and botanical composition of diets of cattle grazing native rangelands were evaluated in a 2-year study. Samples were collected monthly from June through…Publication Date 2001-01-01
- silty soils
- claypan soils
- age differences
- calves
- gender differences
- rain
- chemical composition
- selective grazing
- diet
- heifers
- beef cows
- steers
- crude protein
- natural grasslands
- shrubs
- in vitro digestibility
- biomass
- seasonal variation
- botanical composition
- grasses
- diet selection
- beef cattle
- calf
- steer
- heifer
- 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 RecordLivestock production and wildlife habitat objectives become antagonistic on grasslands when the architecture of standing herbage needed for key wildlife species limits the amount of forage that can…Publication Date 2001-03-01
- Tympanuchus phasianellus
- grouse
- habitat destruction
- nesting
- Phasianidae
- timing
- visual obstruction
- multiple use
- ground cover
- controlled grazing
- stocking rate
- Nebraska
- precipitation
- grazing intensity
- botanical composition
- plant height
- autumn visual obstruction
- grazing pressure
- sharp-tailed grouse (Tympanuchus phasianellus) habitat
- Library Collection RecordAlthough the maintenance of biodiversity has become one of the goals in ecosystem management, the relationships of diversity to ecosystem characteristics such as level of herbivory, productivity, and…Publication Date 2001-03-01
- Lycopodiaceae
- species eveness
- grassland condition
- ground cover
- species diversity
- Saskatchewan
- forbs
- biomass
- range management
- plant litter
- botanical composition
- grasses
- plant height
- biomass
- litter
- sward structure
- Saskatchewan
- Canonical Correspondence Analysis (CCA)
- Two-way Indicator Species Analysis (TWINSPAN)
- Library Collection RecordTraditional theories of plant succession leading to a single equilibrium community are being re-evaluated. Alternative theories involving multiple steady states, and state-and-transition processes…Publication Date 2001-05-01
- groundwater
- ecosystems
- soil depth
- arid zones
- ground cover
- water table
- plant ecology
- ecological succession
- riparian buffers
- soil water content
- plant communities
- semiarid zones
- plant litter
- botanical composition
- rangelands
- riparian plant communities
- groundwater
- soil moisture
- state-and-transition models
- 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 population of European mouflon (Ovis musimon Pallas) established on an island of the sub-Antarctic Kerguelen archipelago is characterized by a demographic cycle. Every 2-5 years, there is a…Publication Date 2001-05-01
- histology
- population dynamics
- rumen contents
- populations
- identification
- temporal variation
- plants
- mouflon
- demography
- validity
- Kerguelen Archipelago
- composition
- winter kill
- estimation
- mortality
- feces
- diet
- botanical composition
- feeding preferences
- diet analysis
- rumen
- feces
- Ovis musimon