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139 result(s) for shrub invasion
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Increase in number of dominant plants and dominance-classes on a grassland in the northern Chihuahuan Desert
Date: 1987
Authors: R. P. Gibbens, and R. F. Beck
Summary: Permanent quadrats were established inside and outside of grazing exclosures on various vegetation types in the Jornada Experimental Range between 1915 and 1932, in order to measure shifts in dominant species composition. Between the establishment o ...
Keywords: black grama, bouteloua eriopoda, tobosa, hilaria mutica, burrograss, scleropogon brevifolius, shrub invasion, jornada experimental range, new mexico
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Habitat selection by the Texas tortoise in a managed thornscrub ecosystem
Date: 2001
Authors: R. T. Kazmaier, E. C. Hellgren, and D. C. Ruthven
Summary: Kazmaier et al. looked at the effects of cattle grazing on the habitat selection of the Texas tortoise. Tortoises preferred areas of multiple canopy layers of woody brush, while avoiding riparian areas and old-fields (grasslands). Riparian areas la ...
Keywords: brush invasion, gopherus berlandieri, grazing, habitat selection, shrublands, texas tortoise
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Relicts of the past: A vanishing range resources
Date: 1998
Authors: L. Kinter, A. Hild, T. D. Whitson, S. Alger, and K. K. Rose
Summary: Of the six Wyoming relict sites with historic vegetation data, three lie in Hot Springs County. In the summer of 1997, the University of Wyoming team located and photographed the sites, conducted vegetative line transects, measured shrub density, co ...
Keywords: grazing, herbivory, leafy spurge, downy brome, bison, cattle, relict sites, bluebunch wheatgrass, threadleaf sedge, big sagebrush, cheatgrass, inventory
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History of grazing research in the Aspen Parkland
Date: 1993
Authors: D. H. McCartney
Summary: The Aspen Parkland of western Canada constitutes a major portion of the agricultural areas of Manitoba, Saskatchewan, and Alberta, with 86% of the forage production and 66% of the beef cattle herd. Most of the Aspen Parkland has been cleared of aspe ...
Keywords: aspen parkland, pasture, forage, research, review
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Quantitative effects of grazing on vegetation and soils over a global range of environments
Date: 1993
Authors: D. G. Milchunas, and W. K. Lauenroth
Summary: Multiple regression analyses were performed on worldwide 236-site data set compiled from studies that compared species composition, aboveground net primary production (ANPP), root biomass, and soil nutrients of grazed vs. protected, ungrazed sites. ...
Keywords: abiotic controls, aboveground net primary production, dominant species and growth forms, evolutionary history of grazing, grazing intensity and duration, herbivory, rangeland condition and trend, root mass vs. grazing, shrub invasion, soil organic matter,
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