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Showing 1 to 18 of 18 for “"Mixed-grass prairie"”.
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Germination thresholds of the Mixed-grass Prairie species as affected by global climate change: A FACE study.
… species were collected from the USDA-ARS Prairie Heating and CO2 Enrichment Experimental plots in 2007 to 2009, located in the Mixed-grass Prairie near Cheyenne, WY. Field treatments include ambient (385 ppm, c) and elevated (600 ppm, C) CO2 concentrations, control temperature (t) and …
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Effects of Grazing Intensity and Temporal Application of Grazing Treatments on Nongame Birds in North Dakota Mixed-Grass Prairie
… Plains and influenced many natural processes in grassland ecosystems, including the habitat selection of breeding birds. Grazing, mainly for livestock production, is still an important land use practice and is one that impacts millions of hectares on both public and private land in the United …
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Effects of Altered Growing Season Precipitation and Management History on Aboveground Biomass Production in Tallgrass and Mixed Grass Prairie of South Dakota
<p>Variation in precipitation and drought in mixed grass and tallgrass prairies effects vegetative production for cool season and warm season plants. Ranchers and farmers livelihoods are dependent on adequate annual precipitation and vegetation for cattle production. Historically, in South Dakota …
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Climate change and plant species composition and community structure in the Central Grassland Region of North America
… As strongly water-controlled systems, grasslands may be particularly sensitive to predicted changes in climate. Using the central grasslands of North America as my study region, I examined how predicted changes in climate will affect soil water availability, net primary production, and …
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Habitat characterization of Saskatchewan's Dakota skipper, Hesperia dacotae population
… butterfly species that inhabits the mesic mixed-grass prairie. The Dakota skipper is listed endangered under the federal Species at Risk Act. Loss of native prairie is the main factor driving declines in Dakota skipper habitat and species abundance is assumed to be declining. Currently, …
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Phenotypic Plasticity of Native and Invasive Cool-Season Grasses in Response to Frequency of Moisture Availability
… (smooth brome) and Poa pratensis (Kentucky bluegrass) are invasive species in tall- and mixed-grass prairie ecosystems. The objectives of this two-part study were to quantify the adaptive plasticity of biomass accumulation and tiller production in B. inermis and P. pratensis in comparison to …
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Forage Potential of Seasonal Wetlands
… basins and their associated uplands (native mixed-grass prairie) over the growing season in 1985. Crude protein (CP), ash, detergent fiber, and in vitro digestible dry matter (IVDDM) values were measured on the above-ground material of whitetop [Scolochloas festucacea (Willd.) Link], slough …
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Avian Occurrence in Woodlands and Grasslands on Public Areas Throughout Eastern South Dakota
… throughout eastern South Dakota in woodland and grassland habitats of different patch sizes and landscape matrices in various physiographic regions. Nongame birds were surveyed in 524 (99 native and 425 planted) woodland patches on 307 public areas in eastern South Dakota using belt transects. …
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Assessing changes in pollen assemblage and charcoal accumulation during known changes in climate from c. 5,400 to 3,300 Years Before Present at the forest-prairie ecotone in Alberta, Canada
The ecotone between aspen parkland and mixed-grass prairie in mid-eastern Alberta is a climatically-sensitive area that has been subject to periods of enhanced aridity occurring at multi-decadal to centennial-scale cycles throughout much of the last 6000 years. To assess the ecotonal response to …
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Status and Distribution of Franklin's and Richardson's Ground Squirrels in Eastern South Dakota
… altered substantially, largely due to native grasslands being converted into cropland. Over 99% of tall grass prairie and an estimated 70 to 90% of native mixed grass prairie have been lost. In addition, expiring conservation reserve program contracts and decreased government incentives to …
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Bison Conservation in the Northern Great Plains
Temperate grasslands are the least protected ecosystem in the world. In North America, only < 4% of tallgrass prairie, 64% of mixed-grass prairie, and 66% of shortgrass prairie are intact. Historically, grazing played an important role in maintaining prairie landscapes through nutrient cycling and …
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Bison Conservation in the Northern Great Plains
Temperate grasslands are the least protected ecosystem in the world. In North America, only < 4% of tallgrass prairie, 64% of mixed-grass prairie, and 66% of shortgrass prairie are intact. Historically, grazing played an important role in maintaining prairie landscapes through nutrient cycling and …
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Sagebrush Steppe Habitats and Their Associated Bird Species in South Dakota, North Dakota, and Wyoming: Life on the Edge of the Sagebrush Ecosystem
… true shrubsteppe of Wyoming and Montana to the mixed-grass prairie that dominates most of the Dakotas. Because this transition zone is different from the two major ecosystems that lie to the east and west of it, the characteristics of the vegetation are unique and the avian associations consist …
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Regrowth of Festuca hallii (Vasey Piper) and Stipa curtiseta [(A.S. Hitch.) Barkworth] following defoliation on a hummocky landscape in Central Saskatchewan
… was conducted on the Missouri Coteau in the Mixed Grassland Ecoregion of Saskatchewan to determine the effects of mowing to a 7.5 cm stubble height on the growth of Festuca hallii (Vasey) Piper and Stipa curtiseta (A.S. Hitch.) Barkworth. Green standing crop (GSC), dead standing crop (DSC) …
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Reproductive Ecology of Long-billed Curlews Breeding in Grazed Landscapes of Western South Dakota
… portion of South Dakota provides important mixed-grass prairie breeding habitats for long-billed curlews and most of these habitats are used as pastureland for grazing domestic livestock. The main objectives of this study were to estimate nesting success and brood survival and to …
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Evaluation of an Augmentation of Rocky Mountain Bighorn Sheep at Badlands National Park, South Dakota
… diversity in the BNP population included a mixed-sex augmentation (n > 30) from an outbred, native population of Rocky Mountain bighorn sheep. Shackleton and the International Union for Conservation of Nature and Natural Resources (IUCN)/Species Survival Commission (SCC) Caprinae Specialist …
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Evaluation of Aerial Transect Surveys, Survival, and Movements of Pronghorns in Western South Dakota
… has been collected in western South Dakota where mixed-grass prairie habitats characterize rangelands. We documented human-related mortality (e.g., hunting, illegal harvest, vehicle collision) as the greatest cause of adult pronghorn mortality (34%), of which 26% (n = 9) of adult deaths were …