Long-term influences of livestock management and a non-native grass on grass dynamics in the desert grassland
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Authors: D. L. Angell, and M. P. McClaran
Date: 2001
Journal: Journal of Arid Environments
Volume: 49
Number:
Pages: 507-520
Summary of Methods: Angell and McClaran examined the relationship between a variety of grazing regimes and grass species densities in an Arizona desert grassland, over 28 years. Grass density was not related to the intensity of livestock grazing. Only one native species, bush muhly (Muhlenbergia porteri), a grass with known sensitivity to summer defoliation, was less dense in pastures without periodic summer rest. Further, the introduced pasture grass Lehmann lovegrass (Eragrostis lehmanniana) increased similarly under all treatments to dominate the pastures by the end of the study period. In general, native species declined prior to the arrival and increase of the non-native lovegrass.
Article Summary / Main Points: None
Vegetation Types:
MLRA Ecoregions:
Agrovoc Control Words: Riparian zones Rangelands Wildlife
Article Review Type: Refereed
Article Type: Experimental Research
Keywords: repeated measures analysis, grazing intensity, grazing systems, desert grassland
Annotation: None
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