Rangeland Ecology & Management
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Displaying 101 - 150 of 493 results
- Library Collection RecordField studies were conducted in 2 types of grasslands in the Pryor Mountain Wild Horse Range of northern Wyoming and southern Montana to examine plant biomass production and nitrogen responses to the…Publication Date 1999-05-01
- mesic grasslands
- irrigated conditions
- controlled release
- NPK fertilizers
- arid grasslands
- competitive ability
- grasslands
- irrigation
- cutting frequency
- biomass production
- Wyoming
- nitrogen content
- Montana
- grasses
- Library Collection RecordWe measured the impact of prescribed summer and winter burns on vegetation characteristics and spring abundance of birds in a Spartina/Paspalum grassland at Matagorda Island National Wildlife Refuge…Publication Date 1997-07-01
- species abundance
- wild birds
- Spartina
- environmental impact
- Paspalum
- grasslands
- vegetation management
- populations
- prescribed burning
- Texas
- Library Collection RecordStanding forage biomass (SFB) and the percent of standing biomass composed of forbs (PCTF) were modeled across the growing season. Samples representing stages of plant maturity from early vegetative…Publication Date 1998-03-01
- neural networks
- forks
- wavelengths
- radiometry
- mathematical models
- grasslands
- prediction
- cutting date
- prairies
- biomass
- canopy
- Library Collection RecordManagement of grasslands subject to replacement by woody species requires an understanding of the scales and patterns of change and how to detect and express them. We used the Jornada del Muerto…Publication Date 1997-05-01
- mapping
- Landsat
- change
- ecological balance
- computer techniques
- remote sensing
- satellite imagery
- grasslands
- plant communities
- grazing
- New Mexico
- Library Collection RecordSeasonal wildlife observations were made along transects on 2 pastures in late seral and 2 pastures in mid seral condition in southcentral New Mexico in non-drought and drought years (1993, 1994).…Publication Date 1997-11-01
- seral stages
- wild birds
- arid zones
- wildlife
- climax communities
- grasslands
- rain
- pastures
- shrubs
- drought
- botanical composition
- New Mexico
- Library Collection RecordCattle exclusion induced dramatic changes in the plant community and modifications in nutrient cycling in grazed native grasslands of the Flooding Pampa (Argentina). The study was carried out to…Publication Date 1996-09-01
- geostatistics
- soil organic matter
- nitrate nitrogen
- ammonium nitrogen
- spatial variation
- grasslands
- soil fertility
- statistical analysis
- nitrogen
- phosphorus
- Argentina
- Library Collection RecordThere is a dearth of knowledge on the selection and utilization of Columbia milkvetch (Astragalus miser Dougl. ex Hook. var. serotinus) by grazing livestock on rangelands in British Columbia. Four…Publication Date 1996-05-01
- Astragalus miser
- miserotoxin
- poisoning
- British Columbia
- highlands
- woodland grasslands
- grasslands
- calves
- Pinus contorta
- palatability
- fiber content
- rain
- selective grazing
- forbs
- beef cows
- crude protein
- rangelands
- grasses
- Library Collection RecordSoil organic C, total N, extractable P, and salinity were evaluated after 12-16 years of protection from grazing in 2 native grassland sites which differed in frequency of soil waterlogging in the…Publication Date 1996-03-01
- flood meadows
- submergence
- inorganic phosphorus
- soil organic matter
- electrical conductivity
- site factors
- ratios
- grasslands
- soil salinity
- soil fertility
- forbs
- grazing intensity
- plant communities
- soil chemistry
- Argentina
- botanical composition
- grasses
- Library Collection RecordWe examined the diets of reintroduced tule elk (Cervus elaphus nannodes Merriam) and resident Columbian black-tailed deer (Odocoileus hemionus columbianus Richardson) inhabiting the coastal prairie-…Publication Date 1995-07-01
- coastal plant communities
- dietary overlap
- animal competition
- grasslands
- Cervus elaphus
- feces
- species differences
- Odocoileus hemionus
- California
- nitrogen content
- seasonal variation
- botanical composition
- forage
- feeding preferences
- 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 RecordThis study was conducted in a temperate range of northern Pakistan in 1987 and 1988. The main purpose of the experiment was to determine a suitable residual phytomass level for the moist temperate…Publication Date 1993-07-01
- Pakistan
- grasslands
- plant litter
- grazing
- infiltration
- Library Collection RecordHoney mesquite (Prosopis glandulosa Torr. var. glandulosa populations continue to expand and become more dense, even on areas once "successfully" treated either with herbicides or by…Publication Date 1992-11-01
- fenuron
- shrub invasion
- manual weed control
- deserts
- arid zones
- Prosopis glandulosa var. glandulosa
- grasslands
- brush control
- mortality
- seedlings
- chemical control
- plant density
- rangelands
- New Mexico
- Library Collection RecordLittle evidence has been found to relate fire intensity to herbaceous vegetation response. Our objective was to determine if components of post-fire herbaceous standing crop in a tallgrass prairie…Publication Date 1992-11-01
- canonical correlation
- fire behavior
- fire intensity
- grasslands
- fire ecology
- fires
- fire effects
- vegetation
- regrowth
- Oklahoma
- plant communities
- prairies
- rangelands
- grasses
- forage
- Library Collection RecordThe relative utility of 4 methods for grasslands above-ground net primary productivity (ANPP) assessment were evaluated. These methods, applied to a set of phytomass and litter data collected at…Publication Date 1991-05-01
- net primary productivity
- dynamic models
- Festuca
- grasslands
- estimation
- productivity
- biomass production
- Library Collection RecordThis study investigated the effect of grazing by California bighorn sheep (Ovis canadensis californiana) on plant community structure. Over 28 months from 1977 to 1979, bighorn diet consisted of 79…Publication Date 1991-09-01
- Ovis canadensis
- Ovis canadensis californiana
- community ecology
- British Columbia
- grasslands
- plant ecology
- species diversity
- ecological succession
- feces composition
- vigor
- plant communities
- shrubs
- botanical composition
- grazing
- grasses
- forage
- feeding preferences
- Library Collection RecordInterest in evaluating theoretical considerations in traditional methods of determining range condition have increased recently with application of different analytical techniques. In this study, the…Publication Date 1991-07-01
- cluster analysis
- quantitative climax approach
- deserts
- land classification
- secondary succession
- spatial variation
- climax communities
- grasslands
- plant ecology
- ecological succession
- pastures
- biomass production
- botanical composition
- rangelands
- New Mexico
- forage
- Library Collection RecordThe concepts of relatively stable multiple states and thresholds or transitions between these states has received little attention in range management until recently. On North American rangelands…Publication Date 1991-09-01
- desert grasslands
- annual grasslands
- climax communities
- grasslands
- plant ecology
- ecological succession
- natural grasslands
- climatic zones
- range management
- rangelands
- United States
- grazing
- Library Collection RecordLittle is known about the chemical composition of throughfall, or the water that falls through, and drips from, the grass canopy of Rough Fescue Grassland during the grazing season. Water-extractable…Publication Date 1992-03-01
- chernozems
- soil organic matter
- monosaccharides
- organic acids and salts
- physicochemical properties
- Festuca campestris
- grasslands
- Alberta
- stocking rate
- chemical composition
- grazing intensity
- soil chemistry
- plant litter
- Library Collection RecordChanges in community composition of 2 grassland sites exposed to a flood of unusual intensity and duration were investigated in the Flooding Pampa. These grasslands are subject almost annually to…Publication Date 1988-11-01
- flora
- plant community analysis
- floodplains
- grasslands
- flooding
- cattle
- Argentina
- botanical composition
- grazing
- forage
- Library Collection RecordContinuous stocking usually leads to the formation of grazed patches. However, the effect of patches on the grassland community is related to their stability. Therefore, we studied the spatial…Publication Date 1988-11-01
- Festuca altaica
- plant community analysis
- danthonia parryi
- grasslands
- yields
- Alberta
- stocking rate
- botanical composition
- livestock
- grazing
- forage
- Library Collection RecordThe use of an inexpensive, commercially available device as a sticky trap for capturing dispersing seeds in the field is described. Trap performance in capturing seeds under various conditions is…Publication Date 1987-07-01
- traps
- performance appraisals
- drop
- variation
- Festuca
- seed dispersal
- height
- grasslands
- Library Collection RecordCattle production on desert grassland ranges in southern New Mexico has been low, although limited research shows diet nutritional quality of cattle is adequate to meet production needs during most…Publication Date 1987-07-01
- dona ana county, new mexico
- production
- deserts
- dietary fiber
- grasslands
- feces composition
- steers
- crude protein
- diets
- protein supplements
- seasonal variation
- rangelands
- New Mexico
- forage
- feed intake
- Library Collection RecordUnderstanding the temporal response of infiltration rate and interrill erosion to selected livestock grazing strategies is necessary for the continued soil and water conservation of rangeland.…Publication Date 1988-07-01
- water conservation
- soil water relations
- interrill erosion
- sediments
- grasslands
- runoff
- Texas
- range management
- livestock
- grazing
- infiltration
- Library Collection RecordLand managers have recommended burning or mowing big sacaton (Sporobolus wrightii) grassland in either fall or winter for 100 years. The greatest potential for natural fire would have occurred when…Publication Date 1988-01-01
- mowing
- seasons
- Sporobolus
- crop quality
- grasslands
- prescribed burning
- range management
- Arizona
- forage
- Library Collection RecordThe influence of individual broom snakeweed (Gutierrezia sarothrae [Pursh] Britt. & Rushby) plants on the distribution of buried viable seed and the distribution of plants in the field was…Publication Date 1987-09-01
- deserts
- distribution
- grasslands
- seedling emergence
- allelopathy
- Gutierrezia sarothrae
- seeds
- botanical composition
- New Mexico
- Library Collection RecordThe objective of this study was to determine if a stratification of microsites within range communities could be used to effectively reduce sampling variation and hence sample size. Two grassland…Publication Date 1987-07-01
- microrelief
- drainage systems
- inventories
- stratification
- vegetation sampling
- stipa columbiana
- Hesperostipa comata
- plant community analysis
- Poa secunda
- British Columbia
- grasslands
- sampling
- Library Collection RecordChanges in vegetation under yearlong grazing were compared with those under the Santa Rita grazing system, a rotation system designed for southwestern US rangelands where 90% of the forage is…Publication Date 1988-07-01
- yield response functions
- grasslands
- vegetation
- rotational grazing
- semiarid zones
- plant density
- range management
- grazing
- Arizona
- Library Collection RecordInfluences of grazing intensity on species composition and herbage production of grass-woodland and improved grassland subtypes of annual range were evaluated over a 5-year period in coastal northern…Publication Date 1987-03-01
- grassland utilization
- grasslands
- responses
- yields
- productivity
- grazing intensity
- California
- sheep
- botanical composition
- rangelands
- grazing
- forage
- Library Collection RecordAn 8-year (1961-1968) study at the San Joaquin Experimental Range, in the Sierra Nevada foothills in central California, compared continuous, repeated seasonal, and rotated seasonal grazing on native…Publication Date 1986-11-01
- annuals
- grasslands
- liveweight gain
- responses
- grazing experiments
- reproductive performance
- California
- cattle
- rangelands
- grazing
- Library Collection RecordThree rodenticide treatments, zinc phosphide (prebaited) and strychnine (both with and without prebait), were evaluated immediately following treatment for efficacy of controlling black-tailed…Publication Date 1986-07-01
- rodent control
- zinc phosphide
- strychnine
- rodents
- Cynomys ludovicianus
- grasslands
- South Dakota
- semiarid zones
- Library Collection RecordPerennial grasses were seeded by drilling or broadcasting on 4 mechanical and 3 herbicidal weed control and/or seedbed preparation treatments at 4 semidesert grassland sites invaded by creosotebush (…Publication Date 1986-11-01
- Larrea tridentata
- crop establishment
- seedbed preparation
- deserts
- broadcasting
- Eragrostis
- pesticide application
- grasslands
- Mexico
- drilling
- perennials
- weed control
- Poaceae
- Arizona
- Library Collection RecordArthropods were sampled in pitfall traps for 2 yr on bentonite mine spoils and adjacent, unmined big sagebrush (Artemisia tridentata) grasslands in southeastern Montana to assess the impacts of…Publication Date 1987-03-01
- mine spoil
- bentonite
- colonizing ability
- mined soils
- arthropods
- grasslands
- reclamation
- Artemisia tridentata
- land restoration
- Montana
- Library Collection RecordBetween 1915 and 1932, 104 permanent 1 × 1-m quadrats were established on grasslands of the Jornada Experimental Range in southern New Mexico. Primary- and secondary-dominant species were determined…Publication Date 1987-03-01
- plant ecological groups
- scleropogon brevifolius
- Bouteloua eriopoda
- deserts
- Hilaria mutica
- grasslands
- dominant species
- plant ecology
- ecological succession
- woody plants
- Poaceae
- range management
- New Mexico
- Library Collection RecordMany studies have been made, and continue to be conducted, to determine infiltration rates and sediment production on rangelands. Most of these studies use small sample plots (<2 m2). This study…Publication Date 1987-05-01
- hydrology
- sediments
- soil erosion
- grasslands
- sampling
- rangelands
- infiltration
- New Mexico
- Library Collection RecordA 3-year study of the vegetation in 4 livestock exclosures was begun in 1976 in the mixed grass prairie of southwestern North Dakota. Three of the exclosures were established in 1937 and the fourth…Publication Date 1986-09-01
- plant community analysis
- grasslands
- ecological succession
- range management
- botanical composition
- zero grazing
- North Dakota
- Library Collection RecordLive and standing dead biomass, standing crop, and total nitrogen, within each component, were measured in a big sacaton (Sporobolus wrightii Monro) grassland in southeastern Arizona for 3 years to…Publication Date 1985-05-01
- Sporobolus wrightii
- Sporobolus
- soil
- biomass determination
- grasslands
- vegetation
- nitrogen content
- Texas
- grazing
- New Mexico
- Arizona
- Library Collection RecordInadequate data have existed concerning cattle preferences for fourwing saltbush [Atriplex canescens (Pursh) Nutt.] on ranges where it is dominant, and concerning composition of cattle diets on the…Publication Date 1985-09-01
- feeding habits
- grasslands
- Atriplex canescens
- animal nutrition
- cattle
- seasonal variation
- Colorado
- Library Collection RecordThe effects of 4 stocking rates (1.2, 1.6, 2.4, and 4.8 AUM/ha) on cattle production were examined, over a 35-year period, on a Rough Fescue (Festuca scabrella Torr.) Grassland. Forage productivity…Publication Date 1986-03-01
- Festuca altaica
- grasslands
- liveweight gain
- grazing trials
- Alberta
- stocking rate
- cattle
- botanical composition
- grazing
- Library Collection RecordA study was conducted to examine the effects of 4 stocking rates on the vegetation in a Rough Fescue Grassland vegetation in southwestern Alberta. Stocking at a light rate (1.2 AUM/ha) for 32 years…Publication Date 1985-05-01
- Festuca altaica
- grasslands
- Alberta
- stocking rate
- cattle
- grazing
- Library Collection RecordChanges in botanical composition and productivity of total herbage and 14 categories of annual range plants caused by elemental sulfur fertilization, range site, and precipitation were studied. Total…Publication Date 1985-03-01
- sulfur fertilizers
- grasslands
- productivity
- pastures
- California
- botanical composition
- Library Collection RecordSpatial patterns of cattle resting behavior were investigated on shortgrass steppe. Resting was divided into daytime and nighttime categories. Sites selected for daytime resting during June through…Publication Date 1985-07-01
- resting sites
- thermoregulation
- selection criteria
- grasslands
- steppes
- animal behavior
- environmental factors
- cattle
- Colorado
- Library Collection RecordAn experiment to evaluate 59 long-term leafy spurge (Euphorbia esula L.) management alternatives with resulting forage production was established at 4 sites in North Dakota in 1980. The herbicides…Publication Date 1985-09-01
- Euphorbia esula
- grasslands
- herbicides
- weed control
- crop production
- forage
- North Dakota
- poisonous plants
- Library Collection RecordThe effect of fall application of urea fertilizer on toxicity of timber milkvetch was examined in 2 growing seasons at 2 rangeland sites in southern British Columbia. On the grassland site, aerial…Publication Date 1986-03-01
- urea fertilizers
- miserotoxin
- Astragalus
- toxicity
- British Columbia
- forests
- grasslands
- plant analysis
- chemical constituents of plants
- poisonous plants
- Library Collection RecordThree models, CREAMS, SPAW, and ERHYM, were used to predict evapotranspiration (ET) from a sagebrush-grass range site in southwest Idaho. Model-predicted ET was compared with ET measured by a…Publication Date 1986-01-01
- artemisia arbuscula
- Elymus elymoides
- Poa secunda
- simulation models
- evapotranspiration
- Artemisia
- grasslands
- plant ecology
- Idaho
- rangelands
- soil water
- Library Collection RecordHerbage production and precipitation were determined at 13 locations in 483 ha of mixed grass range 1975-1979; production was determined at all locations 1982-1983, but precipitation was measured…Publication Date 1985-11-01
- biological production
- soil
- biomass determination
- soil types
- grasslands
- precipitation
- Wyoming
- rangelands
- forage
- Library Collection RecordCrested wheatgrass (Agropyron cristatum (L.) Gaertn.) and Russian wildrye (Elymus junceus Fisch.) are used extensively as seeded pastures in the Prairie Provinces of Canada. Rangeland plowed in 1954…Publication Date 1985-09-01
- Psathyrostachys juncea
- grasslands
- soil fertility
- Agropyron cristatum
- Alberta
- crop yield
- prairie soils
- forage
- Library Collection RecordMuch of the farmland in the Canadian Prairie region has been abandoned over the years and allowed to revert to weedy cover and eventually to grassland. While some of the changes in vegetation during…Publication Date 1985-11-01
- agricultural land
- abandoned land
- soil organic matter
- grasslands
- reclamation
- ecological succession
- Saskatchewan
- Alberta
- vegetation
- semiarid zones
- land restoration
- soil chemistry
- rangelands
- Library Collection RecordTannins and other phenolics interfere with the interpretation of results from the detergent system of forage analysis. Leaves and apices from browse can contain up to 50% of their organic matter as…Publication Date 1986-01-01
- grasslands
- browse plants
- plant analysis
- botanical surveys
- phenolic content
- fiber content
- Kenya
- tannins
- forage
- Library Collection RecordAmerican licorice (Glycyrrhiza lepidota Pursh) is a widespread native legume that may have potential forage or soil conservation uses. Seed predation, seedling emergence, and rhizome production were…Publication Date 1985-09-01
- seed injury
- acanthoscelides fraterculus
- Glycyrrhiza lepidota
- Acanthoscelides
- soil conservation
- forage legumes
- rhizomes
- grasslands
- seedling emergence
- South Dakota
- establishment
- North Dakota
- Library Collection RecordLeaving an amount of mulch at the end of the grazing period, before the new growing season starts is vital in maintaining productivity in grasslands on a sustained yield basis. Mulch was expressed as…Publication Date 1985-05-01
- stubble mulching
- forage crops
- Greece
- grasslands
- yields
- climatic factors
- grazing