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349 result(s) for jornada experimental range
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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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Soil microtopography on grazing gradients in Chihuahuan desert grasslands
Date: 2003
Authors: M. S. Nash, E. Jackson, and W. G. Whitford
Summary: The authors of this study hypothesized that livestock use around a watering point would reduce soil microtopography and consequently reduce perennial grass composition and cause desertification in the Chihuahuan desert. The results indicate that per ...
Keywords: desertification, piosphere, watering point, jornada experimental range, perennial grass cover, water storage, drought survival
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Biological feedbacks in global desertification
Date: 1990
Authors: W. H. Schlesinger, J. F. Reynolds, G. L. Cunningham, L. F. Huenneke, W. M. Jarrell, R. A. Virginia, and W. G. Whitford
Summary: On the basis of the Jornada desertification study, the authors suggest that any process that leads to an increasing heterogeneity of soil resources in space and time is likely to lead to the degradation of semiarid regions, especially grasslands, and ...
Keywords: jornada experimental range, grazing, semiarid grasslands, soil fertility, desertification, biogeochemical cycles
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Instability of development and fractal architecture in dryland plants as an index of grazing pressure
Date: 1998
Authors: C. L. Alados, J. M. Emlen, B. Wachocki, and D. C. Freeman
Summary: Stress from grazing can influence the development of plants and this study uses statistical developmental instability analyses to relate growth characteristics of plants to stress levels caused by sheep and other ungulate grazing. In some plant spec ...
Keywords: developmental instability, chrysothamnus greenii, oryzopsis hymenoides, seriphidium novum, grazing impact, allometric relationships
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Livestock exclusion increases the spatial heterogeneity of vegetation in Colorado shortgrass steppe
Date: 2000
Authors: P. B. Adler, and W. K. Lauenroth
Summary: The effects of long-term protection from moderate cattle grazing on the abundance and spatial heterogeneity of the dominant plant species within a shortgrass steppe was investigated on the Central Plains Experimental Range (40° 49' N; 107& ...
Keywords: disturbance, grazing, moran's i, plant competition, spatial dependence, bunchgrasses, bouteloua gracilis, buchloe dactyloides, agropyron smithii, stipa comata, aristida longiseta, sitanion hystrix
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