Rangeland Ecology & Management
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- Library Collection RecordIn this Colorado study, authors applied a gap dynamics conceptualization of succession to a semiarid grassland, by focusing on gaps produced in the belowground resource space by death of an…Publication Date 1969
- Bouteloua gracilis
- Aboveground Biomass
- blue grama
- disturbance
- gap dynamics
- simulation model
- succession
- Library Collection RecordIn this Colorado study, Coffin and Lauenroth evaluate the effects of interactions among disturbance characteristics on the successional dynamics of small scale disturbances in shortgrass steppe plant…Publication Date 1969
- Bouteloua gracilis
- animal burrows
- ant mounds
- disturbance
- grassland
- succession
- Library Collection RecordCoffin and Lauenroth evaluated the effects of spatially-explicit processes on the recovery of Bouteloua gracilis after disturbances using a modification of a gap dynamics simulation model, developed…Publication Date 1969
- Bouteloua gracilis
- blue grama
- disturbance
- gap dynamics
- grassland
- simulation model
- succession
- Library Collection RecordFrom field data collected in Colorado, Coffin and Lauenroth modeled the effects of three types of small patch-producing disturbances on a short-grass community, dominated by blue grama (Bouteloua…Publication Date 1969
- Bouteloua gracilis
- grazing
- animal burrows
- ant mounds
- blue grama
- disturbance frequency
- disturbance size
- gap turnover
- grassland
- patch dynamics
- simulation model
- Library Collection RecordRodent predation on Lassen antelope bitterbrush (Purshia tridentata) seedlings was studied in burned and unburned antelope bitterbrush communities in California in 1993. Rodent densities were…Publication Date 1969
- antelope bitterbrush
- Purshia tridentata
- granivores
- Harvest
- recruitment
- shrub
- Library Collection RecordClark et al. used four clipping treatments to simulate livestock grazing to assess the effects each clipping level has on bluebunch wheatgrass (Agropyron spicatum) crude protein (CP), in vitro dry…Publication Date 1969
- Agropyron spicatum
- Cervus elaphus
- phenology
- elk
- forage conditioning
- winter range
- Library Collection RecordClark et al. report basal area change and mortality responses of bluebunch wheatgrass (Agropyron spicatum) to 3 spring, 1 winter, and 3 spring + winter defoliation treatments. Clipping half, when…Publication Date 1969
- Agropyron spicatum
- Cervus elaphus
- mortality
- phenology
- bluebunch wheatgrass
- elk
- forage conditioning
- plant vigor
- winter range
- Library Collection RecordClapperton et al. examined the effects of varying levels of cattle grazing on the distribution of soil microarthropods in the rough fescue prairies of Alberta. They looked at the response of…Publication Date 1969
- Acari
- Oribatida
- Prostigmata
- grassland
- livestock grazing
- soil mites diversity
- Library Collection RecordIn this study, prairie dogs (Cynomys ludovicianus), bison (Bison bison), or both were excluded from a mixed grass prairie in southwest South Dakota for two years. Only modest vegetational changes…Publication Date 1969
- bison
- Bison bison
- black-tailed prairie dog
- Cynomys ludovicianus
- grazing patterns
- mixed-grass prairie
- nitrogen concentration
- release from grazing
- Vegetation Response
- Library Collection RecordCid et al. examined western wheatgrass (Agropyron smithii) plants from heavily grazed prairie dog colonies (40 years) and exclosures by defoliated plants 4 times at 6 weeks intervals. Although there…Publication Date 1969
- Agropyron smithii
- biomass production
- clipping
- growth chamber
- prairie dog colonies
- western wheatgrass
- Library Collection RecordOver this 18-week experiment in South Dakota, Cid et al. examined two morphologically distinct growth forms of Agropyron smithii, cloned from material collected from a prairie dog colony (PDC) and a…Publication Date 1969
- Agropyron smithii
- herbivory
- silica
- Cynomys ludovicianus
- plant-animal interactions
- prairie dogs
- Library Collection RecordLincoln's Sparrows (Melospiza lincolnii) were found at 72% of the sites surveyed in California and Oregon. Lincoln's Sparrows were most common in moderately wet to very wet, i.e., flooded…Publication Date 1969
- conservation biology
- habitat association
- insular populations
- Lincoln's Sparrow
- livestock grazing
- Melospiza lincolnii
- Melospiza melodia
- montane meadow
- song Sparrow
- Library Collection RecordFourwing saltbush (Atriplex canescens) shrubs are able to change their sex depending on environmental variables, and in general, stress tends to cause plant sex to shift towards maleness. In this…Publication Date 1969
- Atriplex canescens
- cattle browsing
- nonflowering
- sex change
- shortgrass steppe
- utricle fill
- Library Collection RecordIn this study, Cibils et al. determined Atriplex canescens sizes, ages and sex ratios in pastures that were summer grazed, winter grazed, or ungrazed for 20 years. Ungrazed shrubs were the largest…Publication Date 1969
- Atriplex canescens
- cattle grazing
- shrub ages
- shrub sex ratios
- Library Collection RecordThe effects of light and heavy grazing on the non-structural carbohydrate concentrations of Caucasian bluestem (Bothriochloa caucasica) plant parts were determined in this study. Non-structural…Publication Date 1969
- herbivory
- Bothriochloa caucasica
- Caucasian Bluestem
- defoliation tolerance
- energy reserves
- persistence
- Library Collection RecordLesser snow geese (Chen caerulescens caerulescens) disturb aquatic and semi-aquatic plant species while foraging in the saltmarsh regions of La Perouse Bay, on the Hudson Bay coast. The production…Publication Date 1969
- foraging
- Chen caerulescens caerulescens
- clonal reproduction
- disturbance
- lesser snow geese
- saltmarsh graminoids
- vegetative propagules
- Library Collection RecordThis study in Arizona found that the creosotebush (Larrea tridentata) flourishes over vacant banner-tailed kangaroo rat (Dipodomys spectabilis) mounds, but is diminishing everywhere else in a cattle…Publication Date 1969
- Creosotebush
- Dipodomys spectabilis
- Kangaroo Rat
- Larrea tridentata
- mound geography
- soil depth
- soil nitrogen
- Library Collection RecordThe authors of this study clipped juvenile poplar (Populus balsamifera), willow (Salix bebbiana), birch (Betula papyrifera), alder (Alnus crispa) and aspen (Populus tremuloides) to determine if the…Publication Date 1969
- grazing intensity
- Populus balsamifera
- Populus tremuloides
- birch
- Betula papyrifera
- Alnus crispa
- Carbohydrate Content
- alder
- Aspen
- bebb willow
- nutrient content
- poplar
- resin
- Salix bebbiana
- simulated herbivory
- tannin
- Library Collection RecordChanasyk and Naeth quantified grazing effects on soil bulk density and soil strength of sloped areas in the Alberta foothills fescue grasslands. They measured the effects of two grazing intensities…Publication Date 1969
- grazing
- soil strength
- bulk density
- fescue grasslands
- Library Collection RecordChambers and Norton examined natality, mortality, and population turnover of dominant salt desert shrub species under different seasons (winter vs. spring) and intensities (light vs. heavy) of…Publication Date 1969
- mortality
- grazing intensity
- precipitation
- exclosures
- natality
- population turnover
- shrub population dynamics
- Library Collection RecordAuthors evaluated the effects of continuous and rotational grazing systems at different stocking rates on standing crop dynamics of tallgrass prairie in north-central Oklahoma. Year and stocking…Publication Date 1969
- continuos grazing
- forage production
- Rotation Grazing
- tallgrass prairie
- Library Collection RecordIn this study, Carman measured shoot and root growth for severely defoliated Schizachyrium scoparium plants, with different tillering rates and leaf lengths. Seeds from plants with short leaves were…Publication Date 1969
- Schizachyrium scoparium
- genotypes
- leaf length
- root growth
- simulated herbivory
- tillers
- Library Collection RecordCarlson and Crist investigated plant responses to gopher (Thomomys talpoides attenuatus) mounds, as they vary in topography and grazing history (light or heavy grazing by cattle). There were more…Publication Date 1969
- Bouteloua gracilis
- blue grama
- cattle grazing
- disturbance area
- plant community
- Pocket Gopher
- shortgrass steppe
- Thomomys talpoides attenuatus
- Library Collection RecordIn this study, the pre-grazing and post-grazing stubble heights, in rotationally grazed pastures, were modified to determine the effects of stubble height on individual species and total forage…Publication Date 1969
- rotational grazing
- Dactylis glomerata
- Kentucky bluegrass
- Poa pratensis
- grazing
- orchardgrass
- species harvest index
- Library Collection RecordThe authors of this study determined that pocket gophers (Thomomys bottae) were a keystone species in northern Arizona, that reduced the spread of aspen (Populus tremuloides) into mountain meadows.…Publication Date 1969
- Populus tremuloides
- roots
- Aspen
- belowground herbivory
- keystone species
- mountain meadows
- Pocket Gopher
- refugia
- Thomomys bottae
- Library Collection RecordCampbell-Kissock et al. compared the diets of bobwhites and scaled quail in cattle grazed pastures of southwest Texas. They found little dietary overlap for these birds during the fall-winter season…Publication Date 1969
- cattle grazing
- Desert Grassland
- diet selection
- dietary overlap
- Library Collection RecordIn an 18 month study, in oak post savannah in east central Texas, individual plant basal area decreased and total plant density increased when Schizachyrium scoparium was subjected to repeated, 2 and…Publication Date 1969
- Schizachyrium scoparium
- population structure
- herbivory
- basal area
- perennial bunchgrass
- tiller demography
- Library Collection RecordBusso et al. measured the effects of simulated grazing on total non-structural carbohydrate (TNC) storage and regrowth of bluebunch (Pseudoroegneria spicata) and crested wheatgrass (Agropyron…Publication Date 1969
- crested wheatgrass
- Agropyron desertorum
- Pseudoroegneria spicata
- water stress
- defoliation
- bluebunch wheatgrass
- simulated grazing
- Library Collection RecordBusso and Richards measured the vegetative responses of crested wheatgrass (Agropyron desertorum) and bluebunch wheatgrass (Pseudoroegneria spicata) plants to defoliation under drought, normal and…Publication Date 1969
- crested wheatgrass
- Agropyron desertorum
- Pseudoroegneria spicata
- drought
- growth
- grasses
- bluebunch wheatgrass
- clipping
- tiller demography
- Library Collection RecordIn Utah, Busso and Richards studied the effects of water stress and clipping on leaf extension rate, using field-grown plants of Agropyron desertorum and Pseudoroegneria spicata during three growing…Publication Date 1969
- Agropyron desertorum
- Pseudoroegneria spicata
- water stress
- regrowth
- bunchgrasses
- clipping
- leaf extension rate
- Library Collection RecordAfter defoliation, Busso et al. determined axillary bud number, bud respiratory activity, and photosynthetic canopy re-establishment, for two bunchgrass species, Agropyron spicatum and Agropyron…Publication Date 1969
- crested wheatgrass
- Agropyron desertorum
- Agropyron spicatum
- drought
- defoliation
- bluebunch wheatgrass
- bud viability
- Evan's Blue
- re-growth
- tetrazolium
- Library Collection RecordBurrow et al. concluded that a wide mosaic of microhabitat types is needed to sustain healthy densities of Texas horned lizards. The lizards need adequate amounts of bare ground as well as cover…Publication Date 1969
- burning
- grazing
- habitat selection
- Phrynosoma cornutum
- southern Texas
- Texas horned lizard
- Library Collection RecordBull and Hayes looked at the possible effects that the presence of cattle can have on the reproduction of the Columbia spotted frog. They searched for the presence and abundance of egg masses along…Publication Date 1969
- egg masses
- livestock grazing
- metamorphosed frogs
- northeastern Oregon
- Rana luteiventris Thompson
- Library Collection RecordSevere snowshoe hare (Lepus americanus) browsing causes adult feltleaf willow (Salix alaxensis),in the Alaskan floodplain, to revert to the juvenile form for 2-3 years as a defense mechanism against…Publication Date 1969
- Alaska
- browsing
- feltleaf willow
- Lepus americanus
- lignin
- plant defense
- plant phenols
- Salix alaxensis
- snowshoe hare
- Library Collection RecordThe effects of shading and fertilizer on the palatability, regrowth and phenolic concentrations of Salix alaxensis following simulated snowshoe hare browsing (Lepus americanus) were determined in…Publication Date 1969
- Alaska
- antiherbivore defense
- carbon/nutrient balance
- feltleaf willow
- floodplain succession
- hare browsing
- Lepus americanus
- Salix alaxensis
- snowshoe hare
- Library Collection RecordIn this review, Bryant et al. note that future attempts to explain selective browsing by mammals on woody plants must include chemical antiherbivore defense. This will require identification of…Publication Date 1969
- browsing
- herbivory
- mammals
- chemical defense
- secondary metabolite
- woody plant
- Library Collection RecordIn this review paper, Bryant et al. studied the effects of short-duration grazing systems on commercial ranches. Based on experiences of Texas Tech researchers of short-duration grazing systems…Publication Date 1969
- rotational grazing
- stocking rate
- management
- arid and semiarid regions
- livestock grazing
- rangeland
- short-duration grazing
- Library Collection RecordIn this Oklahoma study, Brummer et al. found that grazing schedule had limited and inconsistent effects on short-term herbage dynamics of tallgrass prairie. Average seasonal standing crop increased…Publication Date 1969
- stocking rate
- herbage accumulation
- herbage disappearance
- Rotation Grazing
- Library Collection RecordBrown and Stuth compared tiller regrowth in Schizachyrium scoparium and Paspalum plicatulum at light, moderate, heavy and extreme levels of defoliation, over 4 years in a Texas grassland.…Publication Date 1969
- Schizachyrium scoparium
- Paspalum plicatulum
- herbivory
- defoliation intensity
- herbivore selectivity
- tillers
- Library Collection RecordHoney mesquite (Prosopis glandulosa) seedling emergence and survival was determined on pastures, with and without a long history of grazing, that were exposed to moderate and heavy defoliation…Publication Date 1969
- Paspalum plicatulum
- Schizachyrium scoparium
- xylem water potential
- competition
- conductance
- dispersal
- Library Collection RecordThe role of cattle in facilitating the ingress and establishment of mesquite (Prosopis glandulosa) has broader implications with regard to the conversion of grasslands to woodlands. On the site with…Publication Date 1969
- dung
- grazing
- mesquite
- disturbance
- Prosopis glandulosa
- Rio Grande Plains
- succession
- Library Collection RecordBrown and McDonald detect a one-sided presentation of data and opinions on livestock grazing in an issue of Conservation Biology (Fleischner 1994; Noss 1994; Weurthner 1994). Much as been written…Publication Date 1969
- livestock
- grazing
- rangelands
- conservation
- ecosystem processes
- Library Collection RecordTwelve years after three species of kangaroo rats (Dipodomys spp.) were removed from plots of Chihuahuan Desert shrub habitat, density of tall perennial and annual grasses had increased approximately…Publication Date 1969
- annual grasses
- desert-grassland transition
- Dipodomys spp.
- kangaroo rats
- keystone guild
- perennial grasses
- rodent populations
- Library Collection RecordBy analyzing herbivore systems at different levels, Brown and Allen have complicated the meaning of the term compensation that its usefulness might be called into question. However, those…Publication Date 1969
- compensatory growth
- herbivory
- hierarchical approach
- level of organization
- overcompensation
- plant-herbivore interaction
- Library Collection RecordReview article, no summary available.Publication Date 1969
- Library Collection RecordReview article, no summary available.Publication Date 1969
- Library Collection RecordBristow et al. looked at the effects of cattle grazing on the habitat selection of Montezuma quail in Arizona. The most important aspect of quail habitat was ample hiding cover followed closely by…Publication Date 1969
- Arizona
- grazing
- cattle
- Cyrtonyx montezumae
- habitat selection
- Madrean evergreen woodland
- Montezuma quail
- Library Collection RecordResearches at the Edwards Plateau Land Resources Area in Texas clipped target plants (selective grazing), target plants and 5 nearest neighbors (uniform grazing), or neighbors only, in areas…Publication Date 1969
- Bouteloua curtipendula
- herbivory
- population structure
- selective grazing
- grassland
- plant-animal interaction
- tiller demography
- Library Collection RecordIn an experiment at Texas A & M, Briske et al. found the tallgrass, A. geradii, exhibited inflexible allocation priorities, while the shortgrass, B. rigidiseta, exhibited flexible allocation…Publication Date 1969
- Schizachyrium scoparium
- Andropogon geradii
- Aristida purpurea
- Bouteloua rigidiseta
- C4 perennial grasses
- carbon allocation
- grazing resistance
- herbivory tolerance
- Library Collection RecordIn a transplant garden, Briske and Anderson grew the perennial bunchgrass, Schizachyrium scoparium, to test the hypothesis that late successional plant populations, with a history of grazing, are at…Publication Date 1969
- Schizachyrium scoparium
- bunchgrass
- grass-grazer interactions
- herbivory resistance
- population selection
- selection pressure
- Tiller recruitment
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