Variability in soil redistribution in the northern Chihuahuan Desert based on Cesium-137 measurements. Ritchie, J., Herrick, J. E., & Ritchie, C. Journal of Arid Environments, 2003. ![Variability in soil redistribution in the northern Chihuahuan Desert based on Cesium-137 measurements [pdf]](https://bibbase.org/img/filetypes/pdf.svg "pdf")
Paper abstract bibtex A hypothesis for understanding the stability of Northern Chihuahuan Desert landscapes is that the distribution of soil resources changes from spatially homogeneous in arid grasslands to spatially heterogeneous in invading shrublands. Since radioactive fallout Cesium-137 was deposited uniformly across the landscape during the 1950s and 1960s and was quickly adsorbed to soil particles, any redistribution of Cs-137 across the landscape would be due to soil redistribution or instability at either plant-interspaces or on a landscape scale. The concentration of Cs-137 in soils collected from different vegetation communities (black grama grass, tarbush, tobosa grass, mesquite) at the USDA-ARS Jornada Experimental Range in the Northern Chihuahuan Desert in New Mexico was determined. At the black grama grass, and tobosa grass sites, Cs-137 was uniformly distributed at the plant interspace scale. At the mesquite sites, Cs-137 was concentrated in the dune area under mesquite shrubs with little to no Cs-137 in the interdune areas. Cesium-137 data support the hypothesis that significant soil redistribution has occurred at dune sites created by invading mesquite. In the arid grassland-shrub sites with black grama grass, tobosa grass, and tarbush the Cs-137 data support the hypothesis of spatially homogeneous distribution of soil resources. High concentrations of Cs-137 in the biological soil crusts (0-5mm) at the tarbush sites indicate that biological soil crusts can contribute to the stability of these sites.
@article{ritchie_variability_2003,
title = {Variability in soil redistribution in the northern {Chihuahuan} {Desert} based on {Cesium}-137 measurements},
volume = {55},
url = {http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6WH9-47YPJF6-1-6&_cdi=6845&_user=1496926&_orig=search&_coverDate=12%2F31%2F2003&_qd=1&_sk=999449995&view=c&wchp=dGLbVtb-zSkzS&md5=b1c60b9367b54f76bcbd2c401cb62c53&ie=/sdarticle.pdf},
abstract = {A hypothesis for understanding the stability of Northern Chihuahuan Desert landscapes is that the distribution of soil resources changes from spatially homogeneous in arid grasslands to spatially heterogeneous in invading shrublands. Since radioactive fallout Cesium-137 was deposited uniformly across the landscape during the 1950s and 1960s and was quickly adsorbed to soil particles, any redistribution of Cs-137 across the landscape would be due to soil redistribution or instability at either plant-interspaces or on a landscape scale. The concentration of Cs-137 in soils collected from different vegetation communities (black grama grass, tarbush, tobosa grass, mesquite) at the USDA-ARS Jornada Experimental Range in the Northern Chihuahuan Desert in New Mexico was determined. At the black grama grass, and tobosa grass sites, Cs-137 was uniformly distributed at the plant interspace scale. At the mesquite sites, Cs-137 was concentrated in the dune area under mesquite shrubs with little to no Cs-137 in the interdune areas. Cesium-137 data support the hypothesis that significant soil redistribution has occurred at dune sites created by invading mesquite. In the arid grassland-shrub sites with black grama grass, tobosa grass, and tarbush the Cs-137 data support the hypothesis of spatially homogeneous distribution of soil resources. High concentrations of Cs-137 in the biological soil crusts (0-5mm) at the tarbush sites indicate that biological soil crusts can contribute to the stability of these sites.},
journal = {Journal of Arid Environments},
author = {Ritchie, J.C. and Herrick, J. E. and Ritchie, C.A.},
year = {2003},
keywords = {JRN}
}
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Since radioactive fallout Cesium-137 was deposited uniformly across the landscape during the 1950s and 1960s and was quickly adsorbed to soil particles, any redistribution of Cs-137 across the landscape would be due to soil redistribution or instability at either plant-interspaces or on a landscape scale. The concentration of Cs-137 in soils collected from different vegetation communities (black grama grass, tarbush, tobosa grass, mesquite) at the USDA-ARS Jornada Experimental Range in the Northern Chihuahuan Desert in New Mexico was determined. At the black grama grass, and tobosa grass sites, Cs-137 was uniformly distributed at the plant interspace scale. At the mesquite sites, Cs-137 was concentrated in the dune area under mesquite shrubs with little to no Cs-137 in the interdune areas. Cesium-137 data support the hypothesis that significant soil redistribution has occurred at dune sites created by invading mesquite. In the arid grassland-shrub sites with black grama grass, tobosa grass, and tarbush the Cs-137 data support the hypothesis of spatially homogeneous distribution of soil resources. 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