Rangeland Ecology & Management
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Displaying 151 - 200 of 578 results
- Library Collection RecordLow larkspurs (Delphinium nuttalliunum Pritz., Delphinium andersonii Gray) and plains larkspur (Delphinium geyeri Greene) often poison cattle grazing on western North American rangelands. The…Publication Date 2007-07-01
- diterpenoid alkaloids
- cattle
- larkspur
- poisonous plants
- methyllycaconitine
- Library Collection RecordSimulated browsing treatments were imposed on an important browse species of the North American moose (Alces alces L.) to see if the development and extent of subsequent stem dieback in trembling…Publication Date 2007-09-01
- cattle
- clipping
- meristem
- moose
- plant response
- stem necrosis
- Library Collection RecordLivestock grazing has been considered detrimental to wildlife habitat. Managed grazing programs, however, have the potential to maintain habitat diversity and quality. In cases in which single-…Publication Date 2005-03-01
- cattle
- facilitation
- herbivory
- deer
- elk
- Library Collection RecordWe evaluated elk (Cervus elaphus), mule deer (Odocoileus hemionus), cattle (Bos taurus), and domestic sheep (Ovis aries) diet composition, diet overlap, and forage selection on aspen (Populus…Publication Date 2005-03-01
- alkaloids
- cattle
- diet overlap
- domestic sheep
- feeding sites
- Nevada
- spurred lupine
- Library Collection RecordPerennial grass production on the Chihuahuan Desert Rangeland Research Center in south-central New Mexico was correlated with precipitation characteristics over a 34-year period. Total December…Publication Date 2005-05-01
- cattle
- climate
- forage
- rainfall
- rangelands
- Library Collection RecordWillow (Salix) communities are important components of riparian ecosystems. However, browsing by livestock and wildlife species can negatively impact willow size and abundance, and make restoration…Publication Date 2005-11-01
- cattle
- deer
- riparian management
- Salix
- herbivory
- Oregon
- Library Collection RecordPrescribed cattle grazing is often used to purposely enhance wildlife habitat. This study investigated the effects of fall cattle (Bos taurus) grazing intensity on elk (Cervus elaphus) and deer (…Publication Date 2003-05-01
- wildlife-livestock relations
- Festuca altaica
- Cervus elaphus
- spring
- forbs
- rotational grazing
- summer
- grazing intensity
- Odocoileus
- cattle
- wildlife management
- biomass
- range management
- botanical composition
- Montana
- Cervus elaphus
- Festuca scabrella
- Odocoileus spp.
- livestock-wildlife relations
- prescribed livestock grading
- Library Collection RecordConsumption of mesquite (Prosopis glandulosa Torr. var glandulosa) fruit by ruminants is an important component of seed dispersal. Two experiments were conducted to estimate the role of livestock and…Publication Date 2003-05-01
- wildlife
- seed dispersal
- Prosopis glandulosa var. glandulosa
- viability
- weathering
- seed predation
- seed maturation
- seeds
- feces
- digestibility
- sheep
- goats
- cattle
- Texas
- range management
- Prosopis
- germination
- digestion
- fecal dispersal
- phenology
- encroachment
- Library Collection RecordThe relationship between stocking density and grazing distribution was studied in eastern Nebraska pastures seeded to a warm-season, tall-grass mixture and grazed at 4 stocking densities: 9, 18, 27,…Publication Date 2003-07-01
- sown pastures
- pasture management
- leaves
- spatial variation
- height
- rain
- stocking rate
- length
- Nebraska
- Panicum virgatum
- Andropogon gerardii
- tillers
- grazing intensity
- cattle
- crop yield
- feeding preferences
- big bluestem
- switchgrass
- uniformity index
- herbage allowance
- Library Collection RecordWe investigated the use of prairie dog towns by cattle (Bos taurus) on the shortgrass steppe of northeastern Colorado by conducting surveys of cattle and vegetation from June to August 1999. Cattle…Publication Date 2003-09-01
- Vulpia
- shortgrass steppe
- Aristida purpurea var. longiseta
- Cynomys ludovicianus
- Sphaeralcea coccinea
- vegetation cover
- habitat preferences
- Buchloe dactyloides
- Carex
- Pascopyrum smithii
- Bouteloua gracilis
- prairies
- botanical composition
- grazing
- Colorado
- beef cattle
- feeding preferences
- cattle
- prairie dogs
- shortgrass steppe
- Library Collection RecordNon-selective grazing (NSG) is a relatively novel way of farming livestock in the Nama Karoo of South Africa. Our key question was how heavy grazing under this high-intensity, low-frequency grazing…Publication Date 2003-09-01
- soil microorganisms
- cell respiration
- infiltration (hydrology)
- aggregate stability
- mixed grazing
- soil organic matter
- South Africa
- stocking rate
- grazing intensity
- sheep
- goats
- cattle
- range management
- grazing systems
- hoof action
- infiltration
- intensive herbivory
- microbial respiration
- semiarid
- Library Collection RecordIndividual animal selection has been proposed as a tool for increasing uniformity of grazing on rugged rangeland. Daily grazing patterns of cows previously identified as preferring steeper slopes and…Publication Date 2004-01-01
- global positioning systems
- cattle
- distribution
- grazing behavior
- Library Collection RecordThe effects of grazing by cattle (Bos taurus) and recently reestablished elk (Cervus elaphus) on mountain meadows in northeastern Nevada are poorly understood. We evaluated production, use, and…Publication Date 2004-07-01
- elk
- cattle
- Cervus elaphus
- clipping treatments
- compensation
- grazing exclosures
- meadow production
- species richness
- utilization
- Library Collection RecordSustainable management of riparian ecosystems depends on our understanding of these complex systems. Thus far, the scientific literature has not adequately addressed the effects of livestock grazing…Publication Date 2004-09-01
- cottonwood
- populus angustifolia
- season of use
- Southwest
- New Mexico
- cattle
- Library Collection RecordStockpiling forage is a commonly used method to extend the grazing season in the southern U.S.A. However, there is little data on stockpiled forage in the upper Midwest. This study was conducted to…Publication Date 2002-01-01
- stock piling
- frost
- feed requirements
- Phalaris arundinacea
- Phleum pratense
- Wisconsin
- Elytrigia repens
- harvest date
- Bromus inermis
- Dactylis glomerata
- Festuca arundinacea
- sown grasslands
- fiber content
- nitrogen fertilizers
- winter
- crude protein
- cattle
- in vitro digestibility
- application rates
- grazing
- forage
- stock piling
- forage quality
- winter grazing
- cool-season grasses
- Library Collection RecordThe influence of night grazing on feeding behavior, nutrition and performance of cattle was studied. Twenty-four steers weighing 367 kg (SD = 76) grazed either from 0900 to 1900 (day grazers), 2100…Publication Date 2002-03-01
- Niger
- rumination
- physical activity
- weight losses
- fiber content
- dry seasons
- diet
- steers
- digestibility
- cattle
- nitrogen content
- seasonal variation
- grazing
- feed intake
- cattle
- forage intake
- night grazing
- Sahel
- Library Collection RecordIn recent years livestock death losses from poisonous plants in the western United States have averaged about 2-3% annually. A review of 36 grazing studies in North America shows poisonous plant…Publication Date 2002-05-01
- Oxytropis
- deserts
- avoidance conditioning
- Oxytropis sericea
- controlled grazing
- poisonous weeds
- woodland grasslands
- Western United States
- grasslands
- continuous grazing
- stocking rate
- range management
- livestock
- Delphinium
- cattle
- sheep
- goats
- grazing
- poisonous plants
- economics
- Library Collection RecordSnakeweeds (broom, Gutierrezia sarothrae (Pursh) Britt Rusby); and threadleaf, G. microcephala (DC.) Gray) fall into that class of poisonous weeds that seldom cause direct livestock losses because…Publication Date 2002-05-01
- adverse effects
- Gutierrezia
- rats
- rabbits
- gutierrezia microcephala
- carrying capacity
- poisonous weeds
- range condition
- palatability
- herbicides
- weed control
- Gutierrezia sarothrae
- prescribed burning
- plant communities
- sheep
- cattle
- range management
- plant competition
- New Mexico
- poisonous plants
- range weed
- livestock grazing
- broom snakeweed (Gutierrezia sarothrae (Pursh) Britt & Rusby)
- threadleaf snakeweed (Gutierrezia microcephala DC.) Gray)
- 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 RecordAnecdotal evidence suggests that cattle fed alfalfa hay during the winter are inclined to graze locoweed on spring range. Two studies were conducted to compare the influence of feeding alfalfa hay vs…Publication Date 2002-07-01
- indolizidine alkaloids
- alfalfa
- alfalfa hay
- swainsonine
- Oxytropis sericea
- winter
- spring
- selective grazing
- beef cows
- hay
- diets
- prairies
- New Mexico
- Colorado
- feeding preferences
- poisonous plants
- Oxytropis sericea
- alfalfa hay
- grass hay
- cattle
- poisonous plants
- Library Collection RecordKnowledge of livestock population dynamics is important to better understand functional attributes and development potential of pastoral production systems. With a focus on the Borana system of semi-…Publication Date 2002-09-01
- pastoralism
- Ethiopia
- risk assessment
- land use
- population dynamics
- mortality
- rain
- stocking rate
- cattle
- drought
- Borana
- pastoralism
- drought
- equilibrial/non-equilibrial systems
- risk 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 RecordShrub fecundity is critical to long term persistence of fourwing saltbush (Atriplex canescens (Pursh) Nutt.) populations at our research site on the shortgrass steppe in Colorado. We conducted a 2-…Publication Date 2003-01-01
- utricle fill
- sex phenotype
- sex ratio
- sex expression
- flowering
- crown
- seed set
- steppes
- Atriplex canescens
- dioecy
- grazing intensity
- browsing damage
- cattle
- Colorado
- Atriplex canescens
- sex change
- nonflowering
- utricle fill
- cattle browsing
- Library Collection RecordFemale fourwing saltbush (Atriplex canescens Pursh [Nutt.]) shrubs are more abundant in exclosures than in adjacent grazed pastures at our research site on the shortgrass steppe in Colorado. We…Publication Date 2003-01-01
- sex ratio
- steppes
- Atriplex canescens
- dioecy
- stocking rate
- grazing intensity
- browsing damage
- cattle
- seasonal variation
- Colorado
- feeding preferences
- Atriplex canescens
- cattle browsing
- dioecious shrubs
- gender-basedd herbivory
- Library Collection RecordIndependent digestion trials with 5 forages were conducted to compare n-alkane with indigestible acid-detergent fiber (IADF) as internal markers to predict in vivo dry matter digestibility (…Publication Date 2000-03-01
- digestibility markers
- alkanes
- indigestible acid-detergent fiber
- alfalfa
- alfalfa hay
- prediction
- feces composition
- fiber content
- hay
- digestibility
- cattle
- in vitro digestibility
- grasses
- forage
- maturity stage
- indigestible
- ADF
- hydrocarbon
- beef cattle
- 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 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 RecordAccurate measures of the relative resource impacts from elk (Cervus elaphus) and cattle (Bos taurus and B. indicus) improve land management planning wherever these species cohabitate. Comparisons of…Publication Date 2000-05-01
- fences
- area
- mixed grazing
- experimental design
- Cervus elaphus
- pastures
- animal behavior
- grazing intensity
- cattle
- wildlife management
- range management
- Montana
- Cervus elaphus
- exclosure site
- livestock-wildlife relations
- wild ungulates
- Library Collection RecordWe evaluated reproduction and recruitment of the Columbia spotted frog (Rana luteiventris Thompson) in 70 ponds used by beef cattle and in 57 ponds not used by beef cattle in northeastern Oregon. No…Publication Date 2000-05-01
- aquatic plants
- surface area
- Rana
- algae and seaweeds
- dissolved oxygen
- rana luteiventris
- fish
- ponds
- recruitment
- depth
- habitats
- ova
- Oregon
- cattle
- grazing
- altitude
- livestock grazing
- northeastern Oregon
- Rana luteiventris Thompson
- 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 RecordStubble height, a measure of the herbaceous vegetation remaining after grazing, has been widely used in recent years to gage the impacts of grazing use in riparian areas. Stubble height is a short-…Publication Date 2000-11-01
- riparian grasslands
- Salix
- streams
- stubble
- ecotones
- height
- riparian buffers
- regrowth
- grazing intensity
- browsing damage
- cattle
- biomass
- range management
- literature reviews
- trampling
- grazing
- livestock management
- streambanks
- trampling
- utilization
- willow
- Library Collection RecordTo quantify effects of forage canopy properties, soil surface relief, and hill slope on the hydrologic properties of the soil in a New Zealand hill land pasture, duplicate plots (15 x 3 m) with 3…Publication Date 2001-03-01
- New Zealand
- surface roughness
- water erosion
- ground cover
- slope
- stocking rate
- sandy loam soils
- cattle
- canopy
- infiltration
- trampling
- plant height
- soil water
- Hoof damage
- canopy
- erosion
- surface roughness
- topography
- Library Collection RecordWhite (Oxytropis sericea Nutt. in T. G.) and Lambert (O. lambertii var. biglovii Pursh) locoweed grow adjacent to each other on the foothills of the Rocky Mountains from southeastern Wyoming to…Publication Date 2001-05-01
- flowering date
- Oxytropis lambertii
- pods
- plant development
- developmental stages
- Weeds
- alkaloids
- Infestation
- Oxytropis sericea
- selective grazing
- cattle
- phenology
- New Mexico
- feeding preferences
- poisonous plants
- Oxytropis lambertii
- Oxytropis sericea
- poisonous plants
- cattle grazing
- swainsonine
- Library Collection RecordA disclimax stand of Canadian bluejoint (Calamagrostis canadensis (Michx.) Beauv.) was heavily grazed by cattle and horses for 4 years to weaken the grass's competition with hardwoods important…Publication Date 2001-05-01
- Calamagrostis canadensis
- Epilobium angustifolium
- rhizomes
- plant development
- wildlife
- viability
- competitive ability
- carbohydrates
- browse plants
- seed weight
- seed productivity
- shoots
- Alaska
- horses
- weight
- woody plants
- digestibility
- cattle
- nitrogen content
- biomass
- phenology
- plant competition
- grazing
- trampling
- chemical constituents of plants
- Calamagrostis canadensis
- overstocking
- forage quality
- boreal forests
- Library Collection RecordA classification of dietary structural types that represents different arrangements of forage classes is proposed. It may be especially useful for interpreting and comparing herbivore diets from…Publication Date 2001-07-01
- Lama guanicoe
- feces composition
- pastures
- selective grazing
- species differences
- vegetation
- feeds
- digestibility
- sheep
- goats
- cattle
- seasonal variation
- Argentina
- botanical composition
- forage
- diet botanical composition
- conceptualization
- forage classes
- microhistological analysis
- multivariate analysis
- similarity of diets
- Library Collection RecordStrategic supplement placement has been shown to be an effective tool to lure cattle to underutilized rangeland. The goal of this study was to determine where cattle grazed when supplement was placed…Publication Date 2001-07-01
- molasses
- global positioning systems
- sloping land
- spatial variation
- water availability
- pastures
- feed supplements
- spatial distribution
- cattle
- Montana
- rangelands
- grazing
- grasses
- distribution
- grazing
- behavior
- utilization
- Library Collection RecordAccurately identifying the botanical composition of free-ranging animal diets remains a challenge. Currently accepted procedures are time consuming, many requiring painstaking sample preparation…Publication Date 2001-07-01
- fluorescence
- lambs
- wavelengths
- methodology
- evaluation
- light intensity
- feces composition
- feces
- statistical analysis
- selective grazing
- feeds
- botanical composition
- forage
- feed intake
- cattle
- botanical composition
- fluorescence
- xenon fluorometry
- fecal fluorophores
- Library Collection RecordPopulations of an introduced woody weed, prickly acacia (Acacia nilotica (L.) Delile ssp. indica (Benth.) Brenan syn. Acacia arabica (Lam.) Willd. ssp. indica Benth.), were surveyed at 4 sites in…Publication Date 2001-07-01
- regeneration
- Weeds
- quarantine
- Queensland
- seed dispersal
- highlands
- rain
- seedlings
- pastures
- selective grazing
- woody plants
- rotational grazing
- sheep
- plant density
- introduced species
- browsing
- grazing
- plant height
- Life-stage profiles
- rainfall
- population dynamics
- regeneration
- cattle
- woody weeds
- Library Collection RecordFrothy bloat in cattle is a serious problem and is difficult to manage under field conditions as it progresses rapidly from early signs of distension to acute distress. Scientists at Agriculture and…Publication Date 2001-07-01
- rumen
- bloat
- disease control
- polymers
- dosage
- feed additives
- risk reduction
- alfalfa
- developmental stages
- cultivars
- water
- incidence
- digestibility
- feed supplements
- cattle
- grazing
- pasture management
- frothy bloat
- legumes
- feed additives
- Library Collection RecordRuminants are a diverse group of mammals, both domestic and wild species, that exhibit microbial fermentation prior to gastrointestinal activity. During the digestive process, glycosides and other…Publication Date 2001-07-01
- metabolites
- metabolism
- clinical aspects
- substrates
- symptoms
- glycosides
- chemical structure
- treatments
- nutrient availability
- phytotoxins
- pastures
- ruminants
- rumen fermentation
- range management
- rangelands
- pasture plants
- literature reviews
- forage
- poisonous plants
- ruminants
- cattle
- rumen microbes
- Library Collection RecordCattle (Bos taurus) and vizcacha (Lagostomus maximus) diets were examined monthly in the semiarid caldénal in central Argentina. Cow-calf operations are the most important economic activities within…Publication Date 1999-07-01
- free range husbandry
- diversity
- Lagostomus maximus
- ambient temperature
- feces composition
- rain
- species differences
- grazing intensity
- diets
- cattle
- seasonal variation
- Argentina
- botanical composition
- grasses
- forage
- feeding preferences
- Library Collection RecordThe effects of cattle grazing were evaluated on range dynamics of the Caatinga which is a deciduous dry woodland, covering most of the semi-arid Brazilian Northeast. Three stocking rates (SR) were…Publication Date 1999-05-01
- caatinga
- continuous grazing
- mortality
- rain
- stocking rate
- species differences
- woody plants
- rotational grazing
- shrubs
- semiarid zones
- Brazil
- cattle
- plant density
- drought
- botanical composition
- canopy
- plant height
- Library Collection RecordCharacterization of relationships between grazing and vegetation responses is difficult. Rapid and accurate measurement of pasture canopy characteristics would help clarify these relationships if…Publication Date 1999-07-01
- leaf angle
- rain
- leaf area index
- stocking rate
- Nebraska
- grazing intensity
- cattle
- rangelands
- canopy
- grazing
- grasses
- Library Collection RecordForage nitrogen (N) and phosphorous (P) concentrations and in-vitro dry-matter digestibility (IVDMD) were measured in 2 important riparian species the year following short-term, high-intensity cattle…Publication Date 1999-05-01
- Carex aquatilis
- Salix
- riparian buffers
- phosphorus
- grazing intensity
- cattle
- in vitro digestibility
- nitrogen content
- seasonal variation
- Library Collection RecordPermanent channel cross-sectional transects perpendicular to flow were used to estimate changes in spring and resultant creek channel morphology. Three cattle grazing treatments (none, light, and…Publication Date 1998-09-01
- depth
- springs (water)
- stream erosion
- streams
- riparian buffers
- rain
- grazing intensity
- California
- cattle
- range management
- Library Collection RecordGrazing strategies should be designed to maintain vigorous populations of plant species critical for livestock production, wildlife habitat, and/or ecosystem functions. Treatments consisting of 5- to…Publication Date 1999-09-01
- early summer
- timing
- Schizachyrium scoparium
- Calamovilfa longifolia
- Andropogon hallii
- sandy soils
- mortality
- stocking rate
- selective grazing
- Nebraska
- rotational grazing
- summer
- tillers
- grazing intensity
- cattle
- botanical composition
- defoliation
- Library Collection RecordIn continuous grazing systems the amount of herbage and its quality is a matter of primary concern. However, at moderate stocking, cattle grazing usually leads to the generation of patches differing…Publication Date 1998-11-01
- areas
- patches
- density
- Festuca arundinacea
- continuous grazing
- stocking rate
- pastures
- cattle
- nitrogen content
- biomass
- Argentina
- grazing
- feeding preferences
- plant height
- 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 RecordSevere livestock losses caused by tall larkspur (Delphinium spp.) consumption have caused many producers to try various preventative measures, including the use of mineral-salt supplementation. The…Publication Date 1998-09-01
- dose response
- dosage
- training (animals)
- poisoning
- Delphinium barbeyi
- dietary mineral supplements
- barley
- cattle
- Utah
- feed intake
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