Rangeland Ecology & Management
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Displaying 101 - 150 of 383 results
- Library Collection RecordThis research investigated the potential for using cattle grazing pressure (AU Mg-1 ha-1) and stocking rate (Animal Unit Days ha-1) for predicting basal scarring and browsing of lodgepole pine (Pinus…Publication Date 1998-03-01
- clearcutting
- British Columbia
- Pinus contorta
- mortality
- seedlings
- stocking rate
- grazing intensity
- browsing damage
- cattle
- Library Collection RecordThis research investigated the potential for using cattle grazing pressure (AU Mg-1 ha-1) and stocking rate (Animal Unit Days ha-1) for predicting basal scarring and browsing of lodgepole pine (Pinus…Publication Date 1998-07-01
- silvopastoral systems
- British Columbia
- Pinus contorta
- seedlings
- stocking rate
- grazing intensity
- browsing damage
- cattle
- trampling
- Library Collection RecordCattle trampling of endangered plants, certain animal species, and ground nests may be a management concern on rangeland. Researchers need theoretical models of trampling loss to assist in design of…Publication Date 1996-05-01
- probabilistic models
- birds' nests
- endangered species
- continuous grazing
- stocking rate
- rotational grazing
- cattle
- range management
- simulation
- trampling
- Library Collection RecordFor many grassland songbird species, pastures represent some of the best available breeding habitat in the Upper Midwest. Increasing interest in intensive rotational grazing (IRG) among midwestern…Publication Date 1996-07-01
- pheasants
- birds' nests
- Wisconsin
- wild birds
- stocking rate
- rotational grazing
- grazing intensity
- 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 RecordThe paper describes an analytical procedure to preliminarily investigate large scale animal-environment interactions. The method is based on Correspondence Analysis applied over a contingency table…Publication Date 1997-01-01
- livestock numbers
- physical activity
- savanna woodlands
- feeding habits
- habitats
- annual grasslands
- winter
- animal behavior
- spring
- shrubs
- cattle
- seasonal variation
- Library Collection RecordMicrobial growth in the rumen is a pivotal part of any ruminant protein system, and there is an optimal balance between available nitrogen (N) and energy in the rumen. When the nitrogen-to-energy…Publication Date 1995-09-01
- cattle
- in vitro digestibility
- protein supplements
- rumen fermentation
- protein requirement
- nitrogen content
- Library Collection RecordThe objective of this study was to evaluate the potential of near infrared reflectance spectroscopy (NIRS) for estimating botanical composition of esophageal extrusa samples. Spectral data were…Publication Date 1996-03-01
- sampling
- Andropogon gerardii
- esophagus
- infrared spectroscopy
- forbs
- diet
- Oklahoma
- digesta
- sheep
- cattle
- botanical composition
- grasses
- Library Collection RecordGrazing can have a profound impact on soil water through its influence on infiltration via treading and on evapotranspiration through defoliation. Hydrologic changes in rangelands are most often…Publication Date 1995-11-01
- groundwater recharge
- grazing time
- soil depth
- evapotranspiration
- controlled grazing
- Alberta
- slope
- soil water content
- grazing intensity
- cattle
- grazing
- Library Collection RecordMore information about the effects of combining intensive livestock grazing of noxious weeds and associated desirable plants with other control measures is needed to develop effective rangeland weed…Publication Date 1996-07-01
- Euphorbia esula
- Poa pratensis
- rain
- selective grazing
- species differences
- sheep
- cattle
- plant density
- picloram
- biomass
- Montana
- grazing
- feeding preferences
- Library Collection RecordTwo 2-year trials were conducted to evaluate and compare frontal, continuous, and 2-paddock rotation grazing systems on 'Plains' Old World bluestem (Bothriochloa ischaemum (L.) Keng.).…Publication Date 1994-05-01
- grassland improvement
- controlled grazing
- liveweight gain
- Bothriochloa ischaemum
- stocking rate
- rotational grazing
- Oklahoma
- grazing intensity
- cattle
- seasonal variation
- Library Collection RecordPaddocks of tallgrass prairie were grazed at intervals similar to 8-paddock short duration grazing. Two replicates of a 2 X 3 factorial treatment design were evaluated to determine the influence of…Publication Date 1994-11-01
- dietary protein
- grazing experiments
- stocking rate
- rotational grazing
- Oklahoma
- crude protein
- cattle
- in vitro digestibility
- prairies
- grasses
- forage
- Library Collection RecordTall larkspur (Delphinium barbeyi L. Huth.) toxicosis of cattle is a serious problem on western USA mountain rangelands. Manipulating the ruminal environment may decrease the susceptibility of cattle…Publication Date 1995-07-01
- rumen fluids
- saliva
- poisoning
- carbachol
- electrolytes
- mineral content
- water intake
- Delphinium barbeyi
- blood serum
- dietary mineral supplements
- transit time
- cattle
- grazing
- Colorado
- forage
- Library Collection RecordThe hand-plucking method for estimation of bite size and nutritive quality was tested for steers grazing at low stocking rates on heathland and in riverine grassland. Vegetation height, standing crop…Publication Date 1995-07-01
- heathlands
- Netherlands
- bite size
- methodology
- riparian grasslands
- estimation
- cattle
- botanical composition
- grazing
- feed intake
- Library Collection RecordThe profitability of alternative range-based production systems is frequently affected by government policies. Moreover, the comparative profitability of wild and domestic animal production systems…Publication Date 1994-07-01
- Zimbabwe
- disincentives
- opportunity costs
- farm income
- game farming
- savannas
- profitability
- beef production
- semiarid zones
- cattle
- range management
- Library Collection RecordLong-term influences of livestock grazing on vegetation around watering points was studied on 2 upland Chihuahuan desert ranges in southcentral New Mexico using regression analysis. One range had…Publication Date 1995-01-01
- drinking water
- arid zones
- stocking rate
- cattle
- range management
- botanical composition
- New Mexico
- poisonous plants
- Library Collection RecordThe sequence of species selection over the grazing period directly determines the effectiveness of different grazing systems. Knowledge of this sequence is also important in understanding the plant-…Publication Date 1995-07-01
- Tristachya
- tirstachya leucothrix
- Themeda triandra
- Eragrostis plana
- Hyparrhenia hirta
- South Africa
- veld
- tillers
- sheep
- cattle
- range management
- botanical composition
- defoliation
- grazing
- feeding preferences
- Library Collection RecordMany ranchers claim that if a cow starts eating locoweed, she will teach others to eat it. Three grazing trials were conducted to evaluate the role of social facilitation in starting cattle to graze…Publication Date 1994-03-01
- biting rates
- conditioned behavior
- Oxytropis sericea
- Astragalus mollissimus
- responses
- animal behavior
- cattle
- Utah
- feeding preferences
- Library Collection RecordAn investigation was conducted to characterize the intensity and frequency of tiller defoliation in 'Plains' Old World bluestem (Bothriochloa ischaemum (L.) Keng) under frontal, continuous…Publication Date 1994-05-01
- frequency
- tussock grasslands
- Bothriochloa ischaemum
- stocking rate
- tillers
- grazing intensity
- browsing damage
- cattle
- defoliation
- grazing
- Library Collection RecordA survey on the levels of the neurotoxic diterpenoid alkaloid methyllycaconitine (MLA) in low larkspur (Delphinium nuttallianum Pritz.) was conducted at rangeland sites in southern British Columbia.…Publication Date 1993-03-01
- rumen microorganisms
- delphinium menziesii
- metabolic detoxification
- alkaloids
- neurotoxins
- rumen fluids
- poisoning
- British Columbia
- cattle
- rumen fermentation
- Delphinium
- chemical constituents of plants
- poisonous plants
- altitude
- delphinium nuttallianum
- methyllycaconitine
- Library Collection RecordOver the past century woody plants have increased in abundance on sites formerly occupied by grasslands in the Sonoran Desert. Woody plant invasion has been associated with a multitude of biological…Publication Date 1993-01-01
- desert rodents
- shrub invasion
- edaphic factors
- Acacia
- woody weeds
- sowing depth
- deserts
- weed biology
- Prosopis velutina
- seed dispersal
- grasslands
- seedling emergence
- invasion
- fires
- fire effects
- air temperature
- woody plants
- environmental factors
- sheep
- cattle
- seed germination
- establishment
- Arizona
- soil texture
- Library Collection RecordAbout 40,000 km2 of the caldénal in central semiarid Argentina are rangelands where the most important economic activity is cow-calf operations. Some information on forage species, mainly regarding…Publication Date 1993-11-01
- cattle
- seasonal variation
- Argentina
- botanical composition
- grazing
- feeding preferences
- Library Collection RecordIn the tropical Andean environments little is known about the relationship between weed dispersal and disturbances caused by cattle. We propose that abundance and dispersal of the Venezuelan Andean…Publication Date 1993-11-01
- Acaena
- vectors
- Venezuela
- plant introduction
- cattle
- Library Collection RecordLeafy spurge (Euphorbia esula L.) represents a serious threat to the productivity and profitability of many cattle ranches in the midwestern U.S. Sheep and goats will graze the weed, but cattle…Publication Date 1993-07-01
- Euphorbia esula
- cattle
- feeding preferences
- Library Collection RecordLand managers of salt desert shrub and sagebrush steppe vegetation have concerns regarding appropriate stocking rates in summer for ephemeral stream riparian zones because of elevated levels of use…Publication Date 1992-07-01
- Populus deltoides
- crop quality
- streams
- habitat selection
- highlands
- protein content
- riparian buffers
- stocking rate
- crude protein
- Wyoming
- plant communities
- grazing behavior
- cattle
- seasonal variation
- forage
- dry matter
- Library Collection RecordCattle grazing has been suggested as a principal cause for poor oak recruitment in California's hardwood rangelands. This study evaluated the effects of stock density and season of grazing on…Publication Date 1992-09-01
- crop damage
- recruitment
- Quercus douglasii
- seedlings
- stocking rate
- winter
- spring
- summer
- grazing intensity
- browsing damage
- California
- woodlands
- cattle
- range management
- seasonal variation
- grazing
- Library Collection RecordCaldén (Prosopis caldenia Burkart) is the dominant tree of the xerophytic open forest in the semiarid pampa of Argentina. caldén has gradually increased its distribution throughout the region during…Publication Date 1993-11-01
- testa
- scarification
- Prosopis
- viability
- feces
- cattle
- seed germination
- Library Collection RecordBecause of widespread concern about cattle grazing effects on riparian zones of public lands, seasonal habitat selection by cattle was studied along a cold desert area ephemeral waterway of…Publication Date 1992-07-01
- crop quality
- streams
- habitat selection
- highlands
- protein content
- riparian buffers
- crude protein
- Wyoming
- grazing behavior
- cattle
- seasonal variation
- grazing
- forage
- dry matter
- feeding preferences
- Library Collection RecordExperiments were conducted to investigate efficiency in analysis of fecal samples by near infrared reflectance spectroscopy (NIRS) to predict cattle forage diet quality. Stability of fecal samples…Publication Date 1993-05-01
- sample processing
- handling
- chemical analysis
- organic matter
- evaluation
- feces composition
- infrared spectroscopy
- digestibility
- crude protein
- diets
- cattle
- nutritive value
- forage
- Library Collection RecordA 3-year field study was conducted near Grassrange, Montana. (Latitude 46 degrees 50'N and Longitude 108 degrees 50'W) to determine the effect of leafy spurge (Euphorbia esula L.) shoot…Publication Date 1992-07-01
- Euphorbia esula
- weed control
- chemical control
- pastures
- grazing behavior
- cattle
- plant density
- picloram
- Montana
- forage
- Library Collection RecordElk (Cervus elaphus Linnaeus), mule deer (Odocoileus hemionus Rafinesque), and cattle (Bos taurus Linnaeus) distributions were determined year round from 1975-1979 on a rest-rotation grazing system…Publication Date 1993-05-01
- population distribution
- mountains
- mountain areas
- sloping land
- highlands
- habitats
- Cervus elaphus
- Idaho
- rotational grazing
- Odocoileus hemionus
- grazing behavior
- cattle
- grazing
- altitude
- Library Collection RecordWhitetop or heart-podded hoary cress (Cardaria draba (L.) Desv.) is an Eurasian native of the Cruciferae actively invading rangelands throughout western North America. The plant is reported to be…Publication Date 1993-05-01
- Lepidium draba subsp. draba
- glucosinolates
- toxicity
- nutrient content
- poisonous weeds
- pastures
- sheep
- cattle
- in vitro digestibility
- nutritive value
- forage
- chemical constituents of plants
- Library Collection RecordBecause of the ongoing controversy about shrub forage value for different ungulates and significance of the shrub communities for spring-fall grazing in southcentral Wyoming, the relative importance…Publication Date 1992-11-01
- livestock-wildlife relationships
- common use grazing
- common lands
- wildlife
- Purshia tridentata
- browse plants
- Cervus elaphus
- Antilocapra americana
- mountain grasslands
- Wyoming
- Artemisia tridentata
- plant communities
- Odocoileus hemionus
- shrubs
- diets
- sheep
- cattle
- rangelands
- grasses
- forage
- Library Collection RecordKnowledge of comparative diet selection by cattle and black-tailed jackrabbits (Lepus californicus) would permit better estimation of grazing capacity on Chihuahuan desert ranges. Cattle and black-…Publication Date 1993-07-01
- Lepus californicus
- stocking rate
- diet
- cattle
- botanical composition
- New Mexico
- poisonous plants
- Library Collection RecordRevegetation of disturbed rangelands in western Canada is severely impeded by cattle grazing. Fencing to protect emergent vegetation is costly and restricts animal movement. Chemically repelling…Publication Date 1993-09-01
- Alberta
- grazing behavior
- cattle
- canopy
- Library Collection RecordAccumulation of wolf plants in rangeland pastures frequently results in waste or incomplete utilization of high quality forage by cattle. The objective of this research was to establish the degree of…Publication Date 1992-07-01
- crop growth stage
- Agropyron desertorum
- palatability
- grazing behavior
- cattle
- plant density
- phenology
- forage
- feeding preferences
- Library Collection RecordLocoweed poisoning generally occurs in early spring. We evaluated cattle grazing of woolly locoweed (Astragalus mollissimus var. mollissimus Torr.) at Gladstone, N.M., and of white locoweed (…Publication Date 1993-09-01
- Oxytropis sericea
- Astragalus mollissimus
- feeding behavior
- cattle
- New Mexico
- Library Collection RecordResearch on the response of livestock gain to stocking rate tends to cluster into 5 "invisible colleges", represented by 5 citation networks which only occasionally intersect. Each college…Publication Date 1993-09-01
- publication
- journals
- liveweight gain
- stocking rate
- cattle
- Library Collection RecordFecal analysis was used to determine the relationships between white-tailed deer (Odocoileus virginianus couesi [Coues and Yarrow]) and cattle diets (Beef Master, Hereford and criollo), in Durango,…Publication Date 1993-11-01
- animal competition
- foraging
- Mexico
- Odocoileus virginianus
- diet
- cattle
- botanical composition
- Library Collection RecordPaper presented at the "Symposium on Ingestion of Poisonous Plants by Livestock," February 15, 1990, Reno, Nevada. Traditionally, effects of plant toxins on livestock have been measured…Publication Date 1992-01-01
- neurotoxins
- toxicology
- taste
- neurobehaioral toxicology
- respondent behahvior
- operant behavior
- taste aversion
- palatability
- animal behavior
- feeding behavior
- sheep
- cattle
- poisonous plants
- Library Collection RecordCharacterization of standing herbaceous biomass on rangeland is complicated by both temporal and spatial variability that results from patchiness in vegetation. These patches often cause nonuniform…Publication Date 1992-05-01
- mixed pastures
- frequency distribution
- Buchloe dactyloides
- mathematical models
- spatial variation
- prediction
- temporal variation
- Bouteloua gracilis
- grazing intensity
- cattle
- biomass
- grazing
- plant height
- Library Collection RecordCattle at a light stocking rate of 0.17 to 0.18 AUM/ha over a 35-day grazing season in summer preferred to graze on lowland range sites, while elk in winter preferred upland range sites. We changed…Publication Date 1991-05-01
- animal competition
- sloping land
- foraging
- highlands
- lowlands
- habitats
- site factors
- soil types
- stocking rate
- pastures
- winter
- Wyoming
- grazing intensity
- Cervus elaphus canadensis
- grazing behavior
- cattle
- Library Collection RecordFour potential cattle grazing systems on summer range in the Sierra Nevada are compared in terms of deer harvest, number of hunters attracted, and the net economic value of hunting. Research on deer…Publication Date 1991-07-01
- net economic benefit
- national forests
- carrying capacity
- population density
- economic analysis
- hunting
- multiple land use
- pastures
- rotational grazing
- grazing intensity
- Odocoileus hemionus
- California
- cattle
- range management
- rangelands
- Library Collection RecordFreeze drying, conventional oven drying, and microwave oven drying were compared with respect to their effect on the chemical composition of native range forage and feces from cattle grazing the…Publication Date 1991-09-01
- convection dryers
- freeze drying
- forage dryers
- microwave dryers
- drying
- feces composition
- fiber content
- feces
- chemical composition
- pastures
- cattle
- forage
- Library Collection RecordWe studied use of pastures and habitats in relation to moderate cattle grazing for 19 radio-collared desert mule deer (Odocoileus hemionus crooki) in a southeastern Arizona grass-shrubland. For each…Publication Date 1991-09-01
- odocoileus hemionus crooki
- xeroriparian habitats
- home range
- semi-desert scrub
- habitat selection
- habitats
- pastures
- Odocoileus hemionus
- cattle
- grazing
- Arizona
- Library Collection RecordTwo trials were conducted to compare diet samples collected in the evacuated rumen or through the esophageal fistula. Hypotheses tested were (1) rumen evacuation would not decrease selectivity, (2)…Publication Date 1991-09-01
- rumen
- fistulation
- grazing trials
- rumen contents
- chemical composition
- sampling
- esophagus
- cattle
- forage
- feed intake
- Library Collection RecordThe effects of late fall grazing, application of picloram (4 amino-3,5,6-trichloro-2-pyridinecarboxylic acid), and seeding on the reinfestation by knapweed (Centaurea diffusa Lam.) were investigated…Publication Date 1992-03-01
- crop mixtures
- Medicago sativa
- Centaurea diffusa
- biological control
- British Columbia
- sown grasslands
- Psathyrostachys juncea
- Agropyron cristatum
- weed control
- chemical control
- cattle
- picloram
- plant competition
- rangelands
- grazing
- Library Collection RecordThe accuracy of microhistological techniques for analysis of herbivore diets was evaluated with cattle, sheep, and Angora goats fed grass, forb, and shrub mixtures of known botanical compositions.…Publication Date 1992-03-01
- feces analysis
- assessment
- feces composition
- shrubs
- diets
- sheep
- goats
- cattle
- botanical composition
- grasses
- New Mexico
- forage
- feeding preferences
- Library Collection RecordPaper presented at the "Symposium on Ingestion of Poisonous Plants by Livestock," February 15, 1990, Reno, Nevada. Livestock poisoning by plants is one of the serious causes of economic…Publication Date 1992-01-01
- livestock and meat industry
- losses
- economic impact
- toxicity
- Western United States
- sheep
- cattle
- forage
- poisonous plants
- Library Collection RecordThe impact of grazing animals and plant protection on shrub seedling establishment was studied in 2 separate experiments. A total of 3,665 seedlings were monitored for survival during a sheep grazing…Publication Date 1992-05-01
- colonizing ability
- biological control
- site factors
- Agropyron desertorum
- brush control
- mortality
- seedlings
- pastures
- Artemisia tridentata
- sheep
- cattle
- Utah
- grazing