The role of fire and soil heating on water repellency in wildland environments: a review. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. In: USDA Forest Service Research Note PSW-132. 1966. Formation of non-wettable soils involves heat transfer mechanism. Dryland, calcareous soils store (and lose) significant quantities of near-surface organic carbon. Ecosphere 3(11):1–13.Ĭunliffe AM, Puttock AK, Turnbull L, Wainwright J, Brazier RE. Effects of fire on belowground biomass in Chihuahuan Desert grassland. ![]() Ecol Monogr 35(2):139–64.īurnett SA, Hattey JA, Johnson JE, Swann AL, Moore DI, Collins SL. Vegetational changes on a semidesert grassland range from 1858 to 1963. Tallahassee, FL: Tall Timbers Research Station. Fire conference 2000: the first national congress on fire ecology, prevention, and management. Proceedings of the invasive species workshop: the role of fire in the control and spread of invasive species. Invasive plants and fire in the deserts of North America. Earth Surf Process Landf 28(11):1189–209.īrooks ML, Pyke DA. Wind and water erosion and transport in semi-arid shrubland, grassland and forest ecosystems: quantifying dominance of horizontal wind-driven transport. J Geophys Res Biogeosci.īreshears DD, Whicker JJ, Johansen MP, Pinder JE. Woody plant proliferation in North American drylands: a synthesis of impacts on ecosystem carbon balance. ![]() PLoS ONE 3(6):e2332.īarger NN, Archer SR, Campbell JL, Huang CY, Morton JA, Knapp AK. Shrub invasion decreases diversity and alters community stability in northern Chihuahuan Desert plant communities. Vegetative changes in New Mexico rangelands. The redistribution of soil C and N from shrub to grass and bare microsites, coupled with the reduced soil water content under the shrub canopies but not in grass and bare microsites, suggests that fire might influence the competition between shrubs and grasses, leading to a higher grass, compared to shrub, coverage in this ecotone.Īllred KW. Overall, fire stimulates the redistribution of soil C and N from shrub microsites to nutrient-depleted grass and bare microsites, leading to a decrease in spatial heterogeneity of these elements. Patches of high soil C and N decomposed 1 year after the prescribed fire. The spatial autocorrelation distance increased from 1 to 2 m, approximately the mean diameter of an individual shrub canopy, to over 5 m 1 year after the fire for TC and TN. Significant differences of total soil carbon (TC) and total soil nitrogen (TN) among the three microsites were not detected 1 year after the fire. Results show that the shrub microsites had the lowest water content compared to grass and bare microsites after fire, even when rain events occurred. Here, we used prescribed fire in a grassland–shrubland transition zone in the northern Chihuahuan Desert to test the hypothesis that fire facilitates the remobilization of nutrient-enriched soil from shrub microsites to grass and bare microsites and thereby reduces the spatial heterogeneity of soil resources. Studies have shown that fire can negatively affect shrub communities and promote resource homogenization, thereby providing some reversibility to the resource heterogeneity induced by shrub encroachment, especially in the early stages of encroachment. The rapid conversion of grasslands into shrublands has been observed in many arid and semiarid regions worldwide.
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