146:164-78. We used the Revised Universal Soil Loss Equation (RUSLE) to evaluate how different residual forage dry matter (RDM) levels affect erosion potential in rangelands across California. Proc Workshop on Estimating Erosion and Sediment Yield on Rangelands, ARM-W-26Salls WB. RUSLE models rill and sheet erosion, but does not include channelized gully erosion. Measured sediment flux from the Schubert Creek study was 0.088 ton per acre per year (0.20 megagram per hectare per year), relatively close to the average modeled erosion potential based on the lower RDM scenario in RPZ 3, in which Schubert is located: 0.05 ton per acre per year (0.11 megagram per hectare per year).Measured sediment flux averaged across the Stemple Creek watershed was 0.015 ton per acre per year (0.03 megagram per hectare per year). Gullys form where water concentrates, resulting in deep channels (B) that are difficult to restore.RUSLE predicts erosion based on six factors: rainfall, soil erodibility, slope length and steepness, cover management, and conservation practices (The GIS database contained a raster layer for each input factor.
J Range Manage. 9(1–2):139-52. RPZs 2, 4 and 5 had the highest erosion potential for all RDM cover scenarios (RPZs 4 and 5 were assigned the Central Coast Range SC-RDM relationship, which had low Erosion potential was relatively high in zone 2 for all scenarios. Masters thesis, in Dept. 52:413-9. This finding is consistent with the results of other erosion assessments in California's annual rangelands (Results suggest that sheet and rill erosion from uplands may not be a significant source of sediment in rangeland streams. Trans ASABE. Kaffka is UCCE Specialist in the Department of Plant Sciences, UC Davis; K.W.
J Range Manage.
Modeled soil erosion potential is low across California's annual rangelands. California's annual rangelands occupy more than 16 million acres (6.5 million hectares), supplying over 70% of the forage for the state's $3 billion beef cattle industry. 2007. We used existing data collected from two different locations: 614 field plots in the northern Sierra Foothills region in Yuba County sampled during fall of 2013, 2014 and 2015, and 168 field plots in the Central Coast Range in eastern San Luis Obispo County collected during fall 2015 to establish a relationship between SC and RDM within each RDM scenario, which generally reflect UCCE grazing guidelines.In each field plot, the area of bare ground was visually estimated, and vegetation was cut at the base, dried and weighed to determine RDM. Foster GR, Toy TE, Renard KG, Renard KG, McElroy SA, Gburek WJ, et al. The first location was in the Central Coast Range near Paso Robles, where we measured erosion in three plots for each of two treatments: planted with a cover crop of the oilseed Measured erosion and sediment flux values at the three locations were low and were surprisingly (given the differences in scale) similar to average modeled erosion potential values based on the low RDM scenario (Erosion rates measured at the planted and bare runoff plots in Paso Robles were similar to modeled erosion potential for zone 4, the RPZ where this site is located. Wilson B. Salls, Royce Larsen, David J. Lewis, Leslie M. Roche, Danny Eastburn, Allan D. Hollander, Mike Walkinshaw, Stephen Kaffka, Kenneth W. Tate, Anthony T. O'Geen Considering all RDM scenarios, fewer than 174,733 acres (70,710 hectares, or 1.2% of land) had erosion potential that exceeded soil loss tolerance values. Ideally, this understanding could lead to regionally focused or prescriptive management responses. 63(4):327-66. Soil carbon dynamics and potential carbon sequestration by rangelands. The parkway is only open to RV […]Hobson Beach is located south of the private gated Seacliff Beach Colony in Ventura County. Determining drought on California's Mediterranean-type rangelands: The noninsured crop disaster assistance program. Just east of the access is tiny Window-to-the-Sea […]Isla Vista County Park is located at Camino Corto and Del Playa Drive in Isla Vista, CA. Calif Agr. Rills are the channel networks. J Range Manage. Rangeland Ecol Manag. Viewpoint: The role of drought in range management. Areas of sheet erosion are the smooth textured surface soil surrounding the rills.Evidence of sheet, rill and gully erosion on steep rangelands. 703. Even though our public agencies, including the Corps of Engineers, already design and implement sand replenishment solutions, it’s likely that in the future this costly work would be in vain as higher sea levels would remove it quickly.We hate to be the bearer of bad news, especially about the future of California beaches, but it is important to talk about this topic. 78(2):93-9. Catena. The main area of this state park, which is called “Bluffs Beach,” has a long continuous parking lot […]Boca del Canon Beach is better-known as “The Hole” by San Clemente local surfers. Larsen is Area Natural Resource/Watershed Advisor, UC Cooperative Extension (UCCE) San Luis Obispo County; D.J. Generalizations, often unrealistic, must be applied to larger areas. Singer M, Blackard J, Huntington G. Plant cover helps control rangeland soil erosion. Roche is Assistant Cooperative Extension Specialist, Department of Plant Sciences, UC Davis; D.J. 66(3):903-13. Spaeth KE Jr, Pierson FB Jr, Weltz MA, Blackburn WH.
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