Rangeland Ecology & Management
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- Library Collection RecordObservation is a simple method of acquiring information and is a critical step in the scientific method for both developing and investigating testable hypotheses. Cameras have long played a role in…Publication Date 2017
- Arizona
- cattle
- elk
- grazing
- riparian
- time-lapse photography
- Library Collection RecordAlthough human influence across rural landscapes is often discussed, interactions between the native, natural systems and human activities are challenging to measure explicitly. We assessed the…Publication Date 2014-03
- Anthropogenic inuence
- land use
- noxious weeds
- sagebrush steppe
- semiarid ecosystem
- semiarid ecosystem
- species distributions
- Library Collection RecordAlthough human influence across rural landscapes is often discussed, interactions between the native, natural systems and human activities are challenging to measure explicitly. We assessed the…Publication Date 2014-03
- Anthropogenic inuence
- land use
- noxious weeds
- sagebrush steppe
- semiarid ecosystem
- semiarid ecosystem
- species distributions
- Library Collection RecordDung beetles are considered keystone species because of their role in decomposition, seed dispersal, and control of vertebrate parasites in grazed habitats. Despite the ecological importance of this…Publication Date 2012-03-01
- land use
- livestock management
- natural protected areas
- Scarabacoidea
- species diversity
- Library Collection RecordMany nonnative invasive grasses alter fire regimes to their own benefit and the detriment of native organisms. In southern Arizona the nonnative Lehmann lovegrass (Eragrostis lehmanniana Nees)…Publication Date 2011-07-01
- Arizona
- Eragrostis lehmanniana
- invasive grasses
- Lehmann lovegrass
- livestock grazing
- native plants
- Library Collection RecordA longitudinal study of California hardwood rangelands shows significant change in landowner characteristics and goals. Results of three studies spanning 1985 to 2004 were used to develop and…Publication Date 2010-05-01
- attitudes
- conservation easements
- impermanence syndrome
- land use
- management
- Quercus
- Library Collection RecordPinus sylvestris L. and Pinus mugo Turra originating from two plantations established during the 1960s are invading subalpine heathlands higher than 1 500 m above sea level in Montseny Natural Park (…Publication Date 2008-03-01
- Abies
- colonization
- land use
- Mediterranean mountains
- Pinus
- plantation
- Library Collection RecordThe knowledge of the distribution, area, and current conservation status of relict natural grasslands dominated by the tall-tussock grass Paspalum quadrifarium Lam. (‘‘pajonal’’) in the Flooding…Publication Date 2005-07-01
- land use
- Landsat TM
- pajonal
- supervised and unsupervised classification
- Library Collection RecordMontezuma quail (Cyrtonyx montezumae Vigors) are closely associated with oak woodlands (Quercus spp.). Livestock grazing and cover availability are considered important factors affecting Montezuma…Publication Date 2004-09-01
- Arizona
- Cyrtonyx montezumae
- grazing
- habitat selection
- livestock
- Madrean evergreen woodland
- Montezuma quail
- Library Collection RecordSite degradation occurs mainly through deterioration of the soil's capacity to capture and store water, as well as the loss of organic matter or the accumulation of salts or other toxic…Publication Date 2004-05-01
- soil bulk density
- organic matter
- land use
- Northeast Mexico
- land degradation
- Library Collection RecordSeveral U.S. rangeland areas recently have been designated as national monuments to protect scientifically or culturally important resources. Typically recreation and livestock uses have been…Publication Date 2003-11-01
- recreation areas
- recreation users
- sociodemographic characteristics
- land use
- Utah
- Library Collection RecordUnderstanding landscape conversion is vital for assessing the impacts of ecological and anthropogenic disturbances at regional and global scales. Since rangelands cover nearly half of the global land…Publication Date 2003-09-01
- environmental degradation
- land use change
- anthropogenic activities
- vegetation cover
- urbanization
- shrublands
- landscape ecology
- Prosopis
- image analysis
- urban areas
- rural areas
- remote sensing
- vegetation types
- semiarid zones
- botanical composition
- rangelands
- grasses
- Arizona
- land conversion
- landscape indices
- fire suppression
- rangeland maintenance
- semiarid
- grasslands
- Library Collection RecordA growth function for range calves is estimated using a polynomial function of calf age that accounts for weather variation, sex, prior calf weights relative to a norm, and a compensatory gain factor…Publication Date 2003-09-01
- slaughter weight
- herd size
- cow-calf operations
- birth weight
- geographical variation
- carrying capacity
- production costs
- liveweight gain
- calves
- gender differences
- Hereford
- profitability
- feed supplements
- precipitation
- grazing
- Arizona
- beef cattle
- optimal calf sale weight
- livestock supplementation effects
- livestock marketing
- polynomial age growth function
- rainfall
- Library Collection RecordMonitoring processes that affect plant population dynamics and determine community structure is central in forest restoration ecology. To study effects of mule deer (Odocoileus hemionus) and elk (…Publication Date 2003-07-01
- artificial regeneration
- flowering
- Cervus elaphus nelsoni
- Ceanothus
- Ceanothus fendleri
- forest thinning
- understory
- plant morphology
- Pinus ponderosa
- branches
- Odocoileus hemionus
- biomass
- browsing
- Arizona
- ecological restoration
- Ceanothus fendleri
- stem morphology
- flower production
- Cervus elaphus
- Odocoileus hemionus
- Library Collection RecordOff-road military vehicle traffic is a major consideration in the management of military lands. The objective of this study was to determine the impacts of military tracked M1A1 heavy combat tank…Publication Date 2003-07-01
- rocks
- soil conservation
- military lands
- vehicles
- desert soils
- vegetation cover
- land management
- land use
- soil erosion
- dry seasons
- wet season
- forbs
- shrubs
- sediment yield
- plant litter
- grasses
- New Mexico
- military lands
- soil stability
- site recovery
- seasonal drought
- Library Collection RecordA 2-year field experiment was undertaken to quantify the interacting effects of a late-spring prescribed burn and summer rainfall on seasonal runoff and erosion in a southern Arizona grassland. Six…Publication Date 2003-01-01
- Lycurus
- perennial bunchgrasses
- soil water movement
- Muhlenbergia
- soil density
- Eragrostis
- Bouteloua
- water erosion
- semiarid grasslands
- rain
- runoff
- prescribed burning
- rainfall simulators
- plant communities
- sediment yield
- grasses
- bulk density
- Arizona
- Arizona
- sediment yield
- summer rainfall
- Library Collection RecordPeriodic summer rainstorms in some semi-arid regions result in variable soil moisture and differential establishment of seeded species. A 2-year study investigated soil water effects on germination…Publication Date 2003-01-01
- Muhlenbergia porteri
- Bothriochloa barbinodis
- drying front
- choice of species
- Leptochloa dubia
- Eragrostis intermedia
- Leptochloa
- revegetation plants
- Digitaria californica
- adventitious roots
- recruitment
- Bouteloua curtipendula
- Eragrostis
- semiarid grasslands
- seedling emergence
- drought tolerance
- rain
- species differences
- soil water content
- summer
- seed germination
- Eragrostis lehmanniana
- Arizona
- warm season
- desert grasslands
- rangeland revegetation
- drought tolerance
- Bouteloua curtipendula
- Bothriochloa barbinodis
- Leptochloa dubia
- Digitaria californica
- Muhlenbergia porteri
- Eragrostis lehmanniana
- Eragrostis intermedia
- Eragrostis lehanniana X tricophera
- 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 RecordThe Walker Basin Allotment grazing system in central Arizona is designed to allocate resource use under elk (Cervus elaphus L.) and cattle (Bos taurus L.) grazing. The grazing system was designed to…Publication Date 2002-07-01
- feeding habits
- stubble
- topography
- woodland grasslands
- rotational grazing
- Pascopyrum smithii
- Cervus elaphus canadensis
- wildlife management
- canopy
- grazing
- Arizona
- beef cattle
- plant height
- Arizona
- deferred grazing
- paired-plot
- rest rotation
- stubble height
- western wheatgrass
- Library Collection RecordThe objectives of this Colorado study were to assess primary reasons ranchers choose to stay or sell the ranch, compare the motivations for ranching between a traditional agriculturally based county…Publication Date 2001-07-01
- public domain
- geographical variation
- urban development
- urbanization
- surveys
- land ownership
- ranching
- land use
- farmers' attitudes
- issues and policy
- profitability
- rangelands
- Colorado
- rangeland policy
- regulation
- survey
- public lands
- urban development
- land use conversion
- Library Collection RecordThe cover of native and non-native introduced plants was compared between seeded (reclaimed) ski runs and adjacent or nearby unseeded (control) areas at a managed ski area in northern Arizona to…Publication Date 2001-05-01
- sowing
- disturbed soils
- skiing
- topsoil
- soil degradation
- ground cover
- grasslands
- reclamation
- species diversity
- introduced species
- botanical composition
- Arizona
- disturbance
- reclamation
- ski runs
- non-native species
- richness
- 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 RecordIn Utah during the early 1990s it was theorized that substantive change was under way in the management of private grazing land. Change was thought to be spearheaded by grazing permittees who feared…Publication Date 2001-03-01
- part-time farming
- farm indebtedness
- farm surveys
- grazing tenancy
- public domain
- irrigated pastures
- risk
- investment
- land ownership
- ranching
- farmers' attitudes
- age
- range management
- rangelands
- Utah
- ranching
- hobby ranching
- land use
- technology transfer
- sustainable agriculture
- Library Collection RecordFrequent and intense defoliation of grasses has been associated with the evolution of "grazing morphotypes" that exhibit a variety of vegetative traits correlated with improved grazing…Publication Date 2000-09-01
- apomixis
- selection pressure
- Bouteloua curtipendula
- inflorescences
- plant morphology
- seed productivity
- genetic effects
- grazing
- Arizona
- Bouteloua
- defoliation tolerance
- evolution
- grazing resistance
- Library Collection RecordForage use data can help rangeland and wildlife managers make informed decisions. However, managers need to know if forage use techniques that are commonly used to estimate ungulate herbivory under…Publication Date 2000-09-01
- experimental plots
- height-weight curve methods
- paired-plot method
- growth curve
- regression analysis
- equations
- Cervus elaphus
- selective grazing
- Pascopyrum smithii
- biomass
- range management
- beef cattle
- forage
- plant height
- Arizona
- height-weight
- herbivory
- paired-plot
- stubble height
- Library Collection RecordRobust needlegrass (Achnatherum robustum [Vasey] Barkw. = Stipa robusta [Vasey] Scribn.) is a high-biomass rangeland species that is adapted to warmer temperatures and matures later than most cool-…Publication Date 2000-07-01
- New Mexico
- Arizona
- Colorado
- beef cattle
- forage
- Stipa
- dry matter
- feed intake
- feeding preferences
- plant height
- zero grazing
- Elytrigia elongata
- Acremonium
- endophytes
- Leymus chinensis
- ergot alkaloids
- ergometrine
- fungi
- roadside plants
- green fodders
- lysergic acid amide
- Stipa robusta
- Achnatherum robustum
- Acremonium
- ergonovine
- lysergic acid amide
- narcosis
- Neotyphodium
- sleepygrass
- Stipa robusta
- Library Collection RecordThis paper reports on the results of a 3-year field study of the effects of spring/summer burning and cattle grazing on wintering sparrows in the grasslands of southeastern Arizona. The effects of…Publication Date 2000-07-01
- ammodramus bairdii
- ammodramus savannarum ammolegus
- aimophila cassinnii
- passerculus sandwichensis
- wild birds
- pooecetes gramineus
- prescribed burning
- grazing intensity
- wildlife management
- grazing
- Arizona
- beef cattle
- birds
- conservation
- bird-banding
- Library Collection RecordCalifornia ranchers in urban Alameda and Contra Costa Counties, and in rural Tehama County, were surveyed to examine effects of increasing development, land use change, and attrition of the ranching…Publication Date 2000-07-01
- ranching
- land use
- land use planning
- urban areas
- rural areas
- farmers' attitudes
- beef production
- California
- rangelands
- land use change
- land trusts
- rangeland conversion
- ranch values
- Library Collection RecordWildlife water developments have been constructed and maintained throughout the arid western United States to benefit big game and upland gamebird populations. There is debate, however, over possible…Publication Date 2000-05-01
- drinkers
- birds of prey
- water resources
- game birds
- coyotes
- predator-prey relationships
- wildlife management
- Arizona
- carnivores
- desert ecology
- raptors
- predator-prey relationships
- ungulates
- wildlife management
- Library Collection RecordBurning of vegetation generally increases surface runoff and erosion and potentially can change the nutrient dynamics of an ecosystem with loss of nutrients. Nitrogen, phosphorus, and potassium…Publication Date 1999-11-01
- nitrogen
- runoff
- prescribed burning
- sandy loam soils
- potassium
- rainfall simulators
- gravelly soils
- phosphorus
- biomass
- losses from soil
- range management
- plant litter
- Arizona
- Library Collection RecordWe identified land uses, vegetation cover types, and landscape patterns associated with avian community diversity in 2 rural landscapes in a hardwood forest-tallgrass prairie ecotone that differ with…Publication Date 1999-09-01
- rural population
- suburban areas
- roads
- arable land
- patch size
- population change
- breeding places
- deciduous forests
- wild birds
- shrublands
- landscapes
- habitat selection
- ground cover
- land use
- population density
- ecotones
- grasslands
- brush control
- species diversity
- pastures
- Oklahoma
- wildlife management
- prairies
- Library Collection RecordWe determined rates of western juniper (Juniperus occidentalis spp. occidentalis Hook.) density and cover change during the period 1951 to 1994 at 3 adjacent sites with nearly identical elevation,…Publication Date 1999-09-01
- population growth
- aerial photography
- grassland condition
- ground cover
- land use
- seed productivity
- ecological succession
- Juniperus occidentalis
- fires
- fire effects
- leaf area index
- Oregon
- Artemisia tridentata
- plant density
- plant competition
- grazing
- Library Collection RecordPrey selection by mountain lions (Puma concolor) in the Aravaipa-Klondyke area in southeastern Arizona was studied from February 1991 to September 1993. Overall diet as determined from frequency of…Publication Date 1999-05-01
- Puma concolor
- prey
- tayassu tajacu
- montane forests
- predator-prey relationships
- predation
- predator control
- semiarid grasslands
- population density
- calves
- diet
- Odocoileus
- seasonal variation
- Arizona
- Library Collection RecordAn understanding of overstory-understory relationships in southwestern oak woodlands is important for predicting response of these systems to disturbance or manipulation. The objective of this study…Publication Date 1998-11-01
- Quercus emoryi
- Magnoliopsida
- C4 grasses
- C3 grasses
- understory
- woodland grasslands
- rain
- Poaceae
- biomass
- canopy
- grasses
- Arizona
- Library Collection RecordWe studied the diets of desert mule deer (Odocoileus hemionus crooki Mearns) at 3 sites in Arizona and collated this information with that of previous diet studies of desert mule deer across their…Publication Date 1997-09-01
- odocoileus hemionus crooki
- xerophytes
- browse plants
- diet
- Odocoileus hemionus
- seasonal variation
- botanical composition
- Arizona
- Library Collection RecordResults of a 1985 survey of California hardwood rangeland landowners were used to develop a multi-agency research and extension program known as the Integrated Hardwood Range Management Program. In…Publication Date 1997-07-01
- surveys
- land ownership
- conservation
- land management
- landowners
- land use
- Quercus
- California
- woodlands
- Library Collection RecordTemporal changes in land use, vegetation cover types, and landscape structure were examined in a hardwood forest-tallgrass prairie ecotone in northern Oklahoma using a Geographic Information System.…Publication Date 1997-05-01
- deciduous forests
- landscape ecology
- geographic information systems
- ground cover
- land use
- population density
- species diversity
- Oklahoma
- natural grasslands
- prairies
- botanical composition
- Library Collection RecordThe objectives of this study were to identify a Site Conservation Threshold, the point at which accelerated erosion occurs, and to examine the usefulness of the Water Erosion Prediction Project (WEPP…Publication Date 1996-05-01
- water erosion
- rill erosion
- ground cover
- semiarid grasslands
- highlands
- mathematical models
- loam soils
- clay soils
- range condition
- rain
- biomass
- sediment yield
- range management
- plant litter
- Arizona
- Library Collection RecordLehmann lovegrass (Eragrostis lehmanniana Nees), an introduced warm season grass, has invaded grasslands in southern Arizona, in many areas replacing the native warm-season grasses. A water balance…Publication Date 1994-09-01
- water binding capacity
- water content
- water balance
- evapotranspiration
- rain
- biomass
- Eragrostis lehmanniana
- introduced species
- Arizona
- soil water
- Library Collection RecordCoordinated Resource Management (CRM) and the National Environmental Policy Act (NEPA) each provide an approach for involving the public and resource specialists from many disciplines in public land…Publication Date 1994-03-01
- governmental programs and projects
- program planning
- land management
- land use
- Library Collection RecordIn 1974 we selected 8 pairs of gully headcuts on the Santa Rita Experimental Range. Mesquite (Prosopis velutina Woot.) on the watershed of 1 headcut of each pair was killed with diesel oil. Densities…Publication Date 1993-03-01
- Prosopis velutina
- semiarid grasslands
- watersheds
- soil erosion
- brush control
- vegetation management
- rain
- runoff
- plant density
- losses from soil
- rangelands
- grasses
- Arizona
- Library Collection RecordFew perennial legumes have been successfully introduced into western North American rangelands receiving less than 250 mm annual precipitation. Winter annual legumes in the genus Medicago (medics)…Publication Date 1993-01-01
- Medicago littoralis
- hard seeds
- medicago laciniata
- winter annuals
- Medicago polymorpha
- Medicago truncatula
- annuals
- seed banks
- arid zones
- persistence
- genotype
- drought tolerance
- stand establishment
- sowing rates
- precipitation
- semiarid zones
- rangelands
- Arizona
- 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 RecordFire on rangelands used as a management tool or as an unwanted wildfire removes vegetation cover. Vegetation cover is thought to be a dominate factor controlling surface runoff and erosion.…Publication Date 1992-09-01
- ground cover
- soil erosion
- spatial variation
- ground vegetation
- loam soils
- fires
- fire effects
- runoff
- prescribed burning
- sandy loam soils
- natural grasslands
- range management
- seasonal variation
- rangelands
- Arizona
- Library Collection RecordLaboratory tests are often conducted to determine seed germination responses to temperatures for seedbed ecology interpretations and revegetation seeding rate calculations. To determine the utility…Publication Date 1992-05-01
- Eragrostis trichophora
- Eragrostis intermedia
- hybrids
- Eragrostis
- seedbeds
- soil temperature
- diurnal variation
- seedling emergence
- stand establishment
- soil water content
- land restoration
- seed germination
- Eragrostis lehmanniana
- Arizona
- Library Collection RecordPonderosa pine (Pinus ponderosa Laws.) overstory-forage understory relationships were studied on the Kaibab Plateau of northern Arizona to evaluate how well forage (graminoid, forb, and current year…Publication Date 1992-05-01
- stand density
- stand structure
- understory
- mathematical models
- prediction
- indexes
- Pinus ponderosa
- regression analysis
- crop production
- canopy
- Arizona
- 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 RecordEven though the Wilderness Act of 1964 provided for continuation of livestock grazing after wilderness designation, there has been continued debate about the Forest Service's implementation of…Publication Date 1991-09-01
- land policy
- permits
- animal unit month
- coronado national forest
- Tonto National Forest
- USDA
- wilderness
- national forests
- multiple land use
- grazing intensity
- range management
- rangelands
- grazing
- Arizona
- Library Collection RecordThe dry-weight rank technique has been used to measure vegetation in various habitats but has not been evaluated in desert shrub habitats. We sampled browse, forb, and grass in the palo-verde (…Publication Date 1991-07-01
- Sonoran Desert
- ranking
- xerophytes
- mountains
- deserts
- semi-desert scrub
- browse
- measurements
- plant ecology
- sampling
- slopes
- grasses
- Arizona
- forage
- dry matter
- Library Collection RecordSuccessful germination and establishment of grass seedlings from surface-sown seeds requires a microsite which provides adequate soil water and temperature conditions, among other species-specific…Publication Date 1991-05-01
- Bouteloua curtipendula
- hybrids
- broadcasting
- soil morphological features
- Eragrostis
- Panicum antidotale
- seedbeds
- Eragrostis trichophora
- surface roughness
- safesites
- microenvironments
- sown grasslands
- seedling emergence
- soil water content
- land restoration
- Eragrostis lehmanniana
- Arizona