Rangeland Ecology & Management
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Displaying 201 - 250 of 683 results
- Library Collection RecordLeafy spurge (Euphorbia esula L), an aggressive Eurasian forb, is invading native upland ranges dominated by bluebunch wheatgrass (Pseudoroegneria spicata [Pursh] A. Love) and Idaho fescue (Festuca…Publication Date 1998-03-01
- Festuca idahoensis
- Pseudoroegneria spicata
- seed banks
- Euphorbia esula
- Idaho
- sheep
- plant density
- grazing
- plant height
- Library Collection RecordDespite extensive coverage and long-term use, the extent to which shadscale [Atriplex confertifolia (Torr. &Frem.) Wats.] community dynamics are driven by grazing rather than by climate and…Publication Date 1998-03-01
- artemisia spinescens
- Hilaria
- Sporobolus cryptandrus
- Achnatherum hymenoides
- Atriplex confertifolia
- rain
- Krascheninnikovia lanata
- sheep
- biomass
- seasonal variation
- Utah
- canopy
- grazing
- Library Collection RecordGeneralized linear mixed models were used to obtain best linear unbiased predictions (BLUP's) of herbivore preferences for range plant species from expert knowledge contained in range site…Publication Date 1998-01-01
- deer
- resource utilization
- Edwards Plateau
- Cyperaceae
- mixed grazing
- interspecific competition
- legumes
- browse plants
- best linear unbiased prediction
- linear models
- forbs
- shrubs
- sheep
- goats
- cattle
- Texas
- grasses
- feeding preferences
- Library Collection RecordGrasslands of northern Tierra del Fuego sustain 1 sheep/ha and are very extensively managed, with flocks roaming freely in large paddocks (2,000-4,000 ha). This system requires knowledge of landscape…Publication Date 1998-01-01
- lamb production
- ecotypes
- Poa
- extensive livestock farming
- indicator species
- landscape ecology
- ground cover
- soil fertility
- mortality
- stocking rate
- natural grasslands
- plant communities
- sheep
- Argentina
- botanical composition
- soil water
- Library Collection RecordThe role of herbivores in controlling plant species richness is a critical issue in the conservation and management of grassland biodiversity. Numerous field experiments in grassland plant…Publication Date 1998
- herbivores
- grassland
- diversity
- species richness
- environmental gradients
- grasslands
- biodiversity
- conservation
- management
- livestock
- soil fertility
- rainfall
- ecosystem ecology
- Africa
- Library Collection RecordThis paper examines the interest in the development and promotion of mixed farming in sub-Saharan Africa. For over 70 years mixed farming has been a dominant model for agricultural development…Publication Date 1998
- mixed farming
- Sub-Saharan Africa
- crop-livestock interaction
- nutrient cycling
- integrated farming
- agriculture
- socio-economic aspects
- Sustainable development
- livestock
- subsistence agriculture
- Africa
- Library Collection RecordSpotted knapweed (Centaurea Maculosa Lam.), a Eurasian perennial forb, is replacing many native perennial grasses, such as Idaho fescue (Festuca idahoensis Elmer.), in foothills of the Northern Rocky…Publication Date 1997-07-01
- native plants
- Festuca idahoensis
- weed control
- seedlings
- Idaho
- plant communities
- sheep
- plant density
- Centaurea maculosa
- range management
- grazing
- Library Collection RecordIn sacco dry matter degradability (DMD) of the most commonly consumed range forages by llamas and sheep in the arid highlands of Bolivia was measured during the wet and dry seasons to determine if…Publication Date 1997-07-01
- in sacco dry matter degradation
- degradation
- Bolivia
- llamas
- highlands
- arid lands
- digestibility
- kinetics
- shrubs
- sheep
- grasses
- forage
- dry matter
- Library Collection RecordSpotted knapweed (Centaurea maculosa Lam.), an aggressive Eurasian forb, is replacing many native perennial grasses such as Idaho fescue (Festuca idahoensis Elmer.) on foothills of the Northern Rocky…Publication Date 1997-07-01
- Festuca idahoensis
- roots
- carbohydrates
- shoots
- weed control
- biomass production
- sheep
- Centaurea maculosa
- range management
- Montana
- plant competition
- grazing
- chemical constituents of plants
- Library Collection RecordThis 10-year study was designed to evaluate vegetation response to increasing stocking rates under rotational stocking (3 days graze, 51 days rest) and long-term rest. The 4 stocking rate treatments…Publication Date 1997-07-01
- stocking rate
- rotational grazing
- Texas
- range management
- botanical composition
- livestock
- Library Collection RecordThe objective of this study was to determine how rangeland hydrology of oak, juniper, bunchgrass and shortgrass vegetation types is altered by fire. The research was conducted at the Sonora…Publication Date 1997-03-01
- bunchgrass
- shortgrasses
- Aristida
- soil aggregates
- Juniperus ashei
- soil organic matter
- water yield
- Quercus virginiana
- woodland grasslands
- runoff
- prescribed burning
- sheep
- goats
- Texas
- sediment yield
- plant litter
- rangelands
- grazing
- infiltration
- grasses
- bulk density
- Library Collection RecordKnowing that sheep or goats can be used to control brush we quantified pasture changes during and after brush control. Over an 8-year period we measured the effects of control (no soil amendment),…Publication Date 1997-03-01
- liming
- West Virginia
- forage legumes
- phosphorus fertilizers
- brush control
- soil pH
- grazing experiments
- sheep
- goats
- application rates
- botanical composition
- Library Collection RecordSheep are often used to graze North American rangelands infested with leafy spurge (Euphorbia esula L.), a long-lived perennial forb from Eurasia. Our objective was to determine if sheep grazing…Publication Date 1997-01-01
- fleece
- sheep dung
- seed dispersal
- viability
- Euphorbia esula
- rain
- seeds
- sheep
- seed germination
- grazing
- Library Collection RecordLehmann lovegrass (Eragrostis lehmanniana Nees) seed (germination 96%, dormant 0%) was used in 4 experiments to study the potential of sheep as a dispersal agent. Five, 4-year-old, ruminally…Publication Date 1997-01-01
- mastication
- sheep dung
- seed dispersal
- seeds
- selective grazing
- sheep
- in vitro digestibility
- rumen fermentation
- seed germination
- Eragrostis lehmanniana
- introduced species
- Library Collection RecordWe use a dynamic stochastic simulation model of forage, herbivores, predators and domestic livestock in the Machakos District of Kenya to address policies related to the multiple use of rangeland…Publication Date 1997
- policies
- grazing
- livestock
- land use
- rangelands
- Traditional management
- commercial agriculture
- conservation
- pastoralism
- Forage Quantity
- drought
- Africa
- Library Collection RecordKnowing that sheep or goats can be used to control brush we quantified pasture changes during and after brush control. Over an 8-year period we measured the effects of control (no soil amendment),…Publication Date 1997
- liming
- West Virginia
- phosphorus fertilizers
- brush control
- soil pH
- sheep
- goats
- botanical composition
- application rate
- forage legumes
- grazing experiments
- 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 RecordThe effects of reducing sheep grazing on upland vegetation and wild herbivores was studied at 11 sites in the Scottish Highlands. Areas where sheep had been removed for periods of up to 25 years were…Publication Date 1996-07-01
- Scotland
- sward
- voles
- sheep manure
- ecological succession
- Cervus elaphus
- stocking rate
- prescribed burning
- plant communities
- sheep
- botanical composition
- rangelands
- canopy
- grazing
- plant height
- Library Collection RecordFlourensia cernua DC. (tarbush) is a deciduous shrub with potential as a high-protein forage source for livestock. Twenty-four Polypay X Rambouillet wethers housed in metabolism crabs were used to…Publication Date 1996-07-01
- pleuraphis mutica
- cholesterol
- blood chemistry
- digestible protein
- nitrogen retention
- urea
- alfalfa
- nitrogen balance
- weed palatability
- leaves
- Flourensia
- body weight
- sheep
- grasses
- New Mexico
- dry matter
- feed intake
- Library Collection RecordTarbush (Flourensia cernua DC.) contributes substantially to the Chihuahuan Desert shrub biomass, but is browsed sparingly by livestock. This study was designed to assess nutritional benefits and/or…Publication Date 1996-07-01
- pleuraphis mutica
- volatile fatty acids
- dose response
- leaves
- Flourensia
- rumen fluids
- water intake
- body weight
- fiber content
- crude protein
- digesta
- pH
- transit time
- sheep
- rumen fermentation
- grasses
- New Mexico
- dry matter
- feed intake
- Library Collection RecordLeafy spurge (Euphorbia esula L.) is a noxious weed on rangelands throughout the Northern Great Plains. Most of these ranges are grazed by cattle which do not use leafy spurge as forage. Although…Publication Date 1996-07-01
- profits
- cattle production
- fencing
- farm budgeting
- carrying capacity
- Euphorbia esula
- ranching
- cost-benefit analysis
- stocking rate
- selective grazing
- sheep
- Montana
- Library Collection RecordSoil nutrients in topsoils (0-7.5 cm) on grazed hilly and steep land on 2 high country sheep farms with contrasting climate in the upper Waitaki district, South Island, New Zealand, were compared…Publication Date 1996-07-01
- cation exchange capacity
- upland soils
- topsoil
- New Zealand
- sown grasslands
- highlands
- pH
- sustainability
- sheep
- grazing
- Library Collection RecordThe relation was studied between the applied stocking rates and the degree to which sheep grazed stems of various karoobush species. A rule of thumb exists amongst farmers and research workers in the…Publication Date 1996-03-01
- Asteraceae
- Eriocephalus
- pentzia spinescens
- rosenia humilis
- eriocephalus ericoides
- stems
- prediction
- South Africa
- palatability
- stocking rate
- diameter
- selective grazing
- semiarid zones
- sheep
- 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 RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1996-02-01
- quantitative techniques
- livestock
- range management
- grazing
- Library Collection RecordVisitors to the Big Cimarron Watershed in the Uncompahgre National Forest, Colorado, had varying attitudes about cattle grazing. Without cuing, 9% of all visitors listed livestock as a source of…Publication Date 1996-01-01
- public opinion
- visitors
- uncompahgre national forest
- multiple land use
- livestock
- grazing
- Colorado
- Library Collection RecordSheep diets were determined seasonally for large flocks grazing year-round in 2 landscape types of the Magellanic steppe of Argentina. A tussock-grass steppe of Festuca gracillima Hooker f. dominates…Publication Date 1996-01-01
- tertiary sediments
- Festuca gracillima
- Festuca
- tussock grasslands
- steppes
- steppe soils
- species diversity
- diet
- woody plants
- sheep
- seasonal variation
- Argentina
- canopy
- forage
- Library Collection RecordSPUR (Simulation of Production and Utilization of Rangelands) is a physically-based model designed to simulate the complexity of rangeland ecosystems (Wight and Skiles, 1987). Results of extensive…Publication Date 1996
- model evaluation
- Rangeland ecosystems
- Spur
- modelling
- management
- soils
- temperature
- livestock
- Africa
- Library Collection RecordThe effects of species composition and sward structure on the ingestive behaviour of cattle and sheep grazing a mesic, low quality grassland in South Africa were investigated over the 1990–93…Publication Date 1996
- diet selection
- cattle
- sheep
- grasslands
- grazing
- Africa
- Library Collection RecordSheep diets were determined seasonally for large flocks grazing year-round in 2 landscape types of the Magellanic steppe of Argentina. A tussock-grass steppe of Festuca gracillima Hooker f. dominates…Publication Date 1996
- Festuca
- steppes
- species diversity
- diet
- woody plants
- sheep
- seasonal variation
- Argentina
- canopy
- forage
- Festuca gracillima
- steppe soils
- tertiary sediments
- tussock grasslands
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1995-12-01
- multiple land use
- wildlife management
- rangelands
- public ownership
- land management
- hunting
- livestock
- Wyoming
- Library Collection RecordA metabolism study evaluated the influence of increasing quantities (0-30% dry matter basis) of mountain big sagebrush (Artemisia tridentata ssp. vaseyana Rydb. Beetle) on dry matter intake and in…Publication Date 1995-11-01
- urine
- nitrogen balance
- feces
- chemical composition
- voluntary intake
- hay
- digestibility
- Wyoming
- Artemisia tridentata
- sheep
- nitrogen content
- dry matter
- feed intake
- Library Collection RecordChanges in the vegetation and soil surface were assessed along a grazing intensity gradient on rangelands of the Punta Ninfas area in southern Argentina. Thirty-two transects were sampled in areas…Publication Date 1995-11-01
- woody weeds
- indicator species
- soil types
- steppes
- grazing intensity
- shrubs
- sheep
- overgrazing
- biomass
- Argentina
- botanical composition
- rangelands
- canopy
- grasses
- forage
- Library Collection RecordLivestock have been a key factor in the development of civilization, but what will their role be in the future and how should the science of rangeland management change to meet the challenges of the…Publication Date 1995-07-01
- interdisciplinary research
- adverse effects
- environmental impact
- stocking rate
- selective grazing
- rotational grazing
- range management
- defoliation
- literature reviews
- livestock
- grazing
- 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 RecordSpotted knapweed (Centaurea maculosa Lam.), an introduced perennial plant, has invaded large areas of rangeland in the northwestern United States. Grazing animals may disseminate the weed by…Publication Date 1995-03-01
- seed dispersal
- viability
- seedling emergence
- seeds
- transit time
- Odocoileus hemionus
- sheep
- Centaurea maculosa
- seed germination
- Montana
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1995-02-01
- livestock
- grasslands
- ecological balance
- land use
- wildlife
- species diversity
- Library Collection RecordA general model of rotational grazing is constructed where in each of P consecutive time periods a mob of animals grazes one of m paddocks. The optimal grazing sequence is that which maximises their…Publication Date 1995
- grazing
- management
- livestock
- fodder production
- foraging ecology
- diet selection
- forage quality
- Africa
- Library Collection RecordWe begin by stressing that relevant and adequate information is an essential ingredient of efficient decision-making processes aimed at optimising the performance of livestock enterprises. Such…Publication Date 1995
- livestock
- Health production
- Africa
- Monitoring methods
- decision support systems
- management
- animal production
- monitoring
- Africa
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1994-12-01
- grazing
- beef cattle
- production costs
- Montana
- sheep
- seasonal variation
- forage
- grasses
- nutrient content
- protein intake
- crude protein
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1994-12-01
- rangelands
- livestock
- grazing intensity
- forage
- utilization
- relative utilization
- Library Collection RecordGrazing trials were conducted during early and late spring of 1988 and 1989 to evaluate the impact of sheep grazing duration and stocking density on grazing efficiency and forage selectivity in tall…Publication Date 1994-11-01
- Trifolium subterraneum
- Festuca arundinacea
- grazing trials
- duration
- efficiency
- stocking rate
- spring
- Oregon
- sheep
- grazing behavior
- feed intake
- feeding preferences
- Library Collection RecordThe objective of these studies was to compare preference for leafy spurge (Euphorbia esula L.) by sheep and goats. Study 1 was a choice test that paired leafy spurge with either arrowleaf balsamroot…Publication Date 1994-11-01
- Balsamorhiza sagittata
- Balsamorhiza
- biological control
- Euphorbia esula
- Agropyron cristatum
- Idaho
- sheep
- goats
- grazing behavior
- feeding preferences
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1994-10-01
- Macropodidae
- New South Wales
- species differences
- water intake
- Australia
- sheep
- wildlife management
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1994-10-01
- livestock
- rangelands
- grazing
- ecological succession
- models
- drought
- pastoralism
- desertification
- Kenya
- agropastoral systems
- Library Collection RecordBotanical composition of llamas and sheep diets were quantified monthly during 1 year in the arid highlands of Bolivia to identify competition between these species for forage resources. Results…Publication Date 1994-05-01
- Bolivia
- performance
- Festuca
- llamas
- high altitude
- festuca orthopylla
- arid zones
- voluntary intake
- species differences
- diet
- digestibility
- shrubs
- sheep
- seasonal variation
- botanical composition
- grasses
- forage
- feeding preferences
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1994-04-01
- wildlife
- China
- livestock
- rangelands
- conservation areas
- pastoral society
- agropastoral systems
- farming systems
- Library Collection RecordBased on recent circumstances in connection with compensation of livestock killed by large, protected carnivores in Norway, this paper discusses what type of logic should be used to establish which…Publication Date 1994-03-01
- philosophy
- tracks
- argumentation
- proof
- losses
- predation
- Norway
- Ursus arctos
- livestock
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1994-02-01
- measurement
- carrying capacity
- body weight
- overgrazing
- stocking rate
- livestock
- ranching
- rangelands
- Library Collection RecordIn semi-arid and arid magisterial (administrative) districts (n = 45) in the Cape Province, South Africa, there has been a mean 44·4 ± 14·6% (S.D.) reduction in the stocking rates of domestic…Publication Date 1994
- livestock
- animal production
- stocking rates
- rainfall
- drought
- socio-economic aspects
- Africa
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