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Description of resources (i.e., laboratory faciliities): <br />Both Principal Investigators authoring this proposal are experienced research <br />scientists in Research Work Unit 4451 of the USDA Forest Service Rocky Mountain <br />Research Station in Ft. Collins, Colorado. They have a combined experience of over <br />50 years studying vegetation of the southern Rocky Mountains and collectively have <br />published over 200 research publications. Facilities at the Rocky Mountain Research <br />Station include laboratories for analysis of soil and water samples, processing, drying <br />and weighing samples, and computer facilities to compile and analyze data. Support <br />personnel include a professional forester, an electronic engineer to design and <br />maintain automatic data collection and control equipment used in this study, and a <br />biometrician to assist in study design and data analysis. Other resources at our <br />disposal include specialized equipment to measure plant water stress and plant <br />physiology; excavate, process, and measure root samples; vehicles; and specialized <br />tools and other devices needed to collect data and maintain instruments. RMRS also <br />has available a trailer to locate on site to house specialized equipment. The study will <br />be conducted at a fenced reclaimed field site on the Seneca Coal Company II-W <br />mine. <br />Literature Cited: <br />Baker, F.S. 1925. Aspen in the central Rocky Mountain region. Bulletin 1291. <br />Washington, D.C.: U.S. Department of Agriculture. 47 p. <br />Cryer, D.H.; Murray, J.E. 1992. Aspen regeneration and soils. Rangelands. 14: (4) <br />223-226. <br />DeByle, Norbert V. and Winokur, Robert P., eds. 1985. Aspen: ecology and <br />management in the western United States. ISM-GTR-119. Fort Collins, CO: U.S. <br />Department of Agriculture, Forest Service, Rocky Mountain Forest and Range <br />Experiment Station. 283 p. <br />DeByle, N.V. 1964. Detection of functional intraclonal aspen root connections by <br />tracers and excavation. Forest Science. 10:: (4) 386-96. <br />DesRochers, A.; Lieffers, V.J. 2001. The coarse-hoot system of mature Populus <br />tremuloides in declining stands in Alberta, Canada. Journal of Vegetation <br />Science. 12: {3) 355-360. <br />DesRochers A.; Van Den Driessche, R.; Thomas B.R. 2003. Nitrogen fertilization of <br />trembling aspen seedlings grown on soils of different pH. Canadian Journal of <br />Forest Research. 33: (4) 552-560. <br />Doucet, R. 1989. Regeneration silviculture of Aspen. Forestry Chronicle. 65: (1) 23- <br />27. <br />Hinds, T.E. 1985. Diseases. In: DeByle, N.V.; Winoker, R.P., eds. Aspen: ecology <br />and management in the United States. GTR-RM-119. Fort Collins, CO: U.S. <br />Department of Agriculture, Forest Service, Rocky Mountain Forest and Range <br />Experiment Station: 87-106. <br />Hansen, E.A. 1988. Irrigating short rotation intensive culture hybrid poplars. Biomass <br />16: 237-350. <br />Hipkins, V.D.; Kitzmiller, J.H. 2004. Genetic variation and clonal distribution of <br />quaking in the central Sierra Nevada. Transactions of the Western Section of the <br />Wildlife Society. 40. 32-44. <br />14 <br />