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Nanus L, Williams MW, Campbell DH, Tonnessen KA, Blett T, Clow DW. Assessment of lake sensitivity to acidic deposition in national parks of the Rocky Mountains.  2009:961-973.\par \par Hartman MD, Ojima DS, Parton WJ, Renfro J, Robinson RB, Van Miegroet H, Weathers KC, Williams MW, Baron JS, Clow DW. DayCent-Chem simulations of ecological and biogeochemical processes of eight mountain ecosystems in the United States. Reston, VA; 2009 p. . Available from: http://pubs.usgs.gov/sir/2009/5150/\par \par Lazar B, Williams MW. Climate change in western ski areas: Potential changes in the timing of wet avalanches and snow quality for the Aspen ski area in the years 2030 and 2100.  2008;51:219-228.\par \par Racoviteanu A, Arnaud Y, Williams MW, Zapata M, Ordonez J. Decadal changes in glacial parameters for the Cordillera Blanca, Peru derived from SPOT 5 satellite imagery and aerial photography.  2008;54 (186):499-510.\par \par Molotch NP, Meixner T, Williams MW. Estimating stream chemistry during the snowmelt pulse using a spatially distributed, coupled snowmelt and hydrochemical modeling approach.  2008;44.\par \par Nanus L, Williams MW, Campbell D, Elliot EM, Kendall C. Evaluating Regional Patterns in Nitrate Sources to Watersheds in National Parks of the Rocky Mountains using Nitrate Isotopes.  2008;42:6487-6493.\par \par Racoviteanu A, Williams MW, Barry RG. Review: Optical Remote Sensing of Glacier Characteristics: A Review with Focus on the Himalaya.  2008;8:3355-3383.\par \par Li X, Williams MW. Snowmelt runoff modelling in an arid mountain watershed, Tarim Basin, China.  2008.\par \par Litaor MI, Williams MW, Seastedt TR. Topographic controls on snow distribution, soil moisture, and species diversity of herbaceous alpine vegetation, Niwot Ridge, Colorado.  2008;113.\par \par Molotch NP, Blanken PD, Williams MW, Turnipseed AA, Monson RK, Margulis SA. Estimating sublimation of intercepted and sub-canopy snow using eddy covariance systems.  2007;21 (12):1567-1575.\par \par Williams MW, Knauf M, Cory R, Caine N, Liu FJ. Nitrate content and potential microbial signature of rock glacier  outflow, Colorado Front Range.  2007;32 (7):1032-1047.\par \par Monson RK, Burns SP, Williams MW, Delany AC, Weintraub M, Lipson DA. The contribution of beneath-snow soil respiration to total ecosystem respiration in a high-elevation, subalpine forest.  2006;20(3).\par \par Williams MW, Knauf M, Caine N, Liu F, Verplanck PL. Geochemistry and Source Waters of Rock Glacier Outflow, Colorado Front Range.  2006;17:13-33.\par \par Miller MP, McKnight DM, Cory RM, Williams MW, Runkel RL. Hyporheic Exchange and Fulvic Acid Redox Reactions in an Alpine Stream/Wetland Ecosystem, Colorado Front Range.  2006;40(19):5943-5949.\par \par Hock R, Rees G, Williams MW, Ramirez E. Preface - Contribution from glaciers and snow cover to runoff from mountains in different climates - Special issue.  2006;20(10):2089-2090.\par \par Monson RK, Lipson DL, Burns SP, Turnipseed AA, Delany AC, Williams MW, Schmidt SK. Winter forest soil respiration controlled by climate and microbial community composition.  2006;439:711-714.\par \par Erickson TA, Williams MW, Winstral A. Persistence of topographic controls on the spatial distribution of snow in rugged mountain terrain, Colorado, United States.  2005;41(4).\par \par Hood E, Williams MW, McKnight D. Sources of dissolved organic matter (DOM) in a Rocky Mountain stream using chemical fractionation and stable isotopes.  2005;74(2):231-255.\par \par Seastedt TR, Bowman WD, Caine TN, McKnight D, Townsend A, Williams MW. The Landscape Continuum: A Model for High Elevation Ecosystems.  2004;54(2):111-121.\par \par Ley RL, Williams MW, Schmidt SK. Microbial population dynamics in an extreme environment:controlling factors in talus soils at 3750 m in the Colorado Rocky Mountains.  2004;68:313-335.\par \par Liu F, Williams MW, Caine N. Source waters and flow paths in an alpine catchment, Colorado Front Range, United States.  2004;40.\par \par Williams MW, Losleben MV, Hamann HB. Alpine Areas in the Colorado Front Range as Monitors of Climate Change and Ecosystem Response.  2003;92(2):180-191.\par \par Williams MW, Hood E, Caine N. Headwater catchments of the Boulder Creek Watershed. In: and Murphy, S.F. VBPLLB Comprehensive water quality of the Boulder Creek Watershed, Colorado, during high-flow and low-flow conditions, 2000: U.S. Geological Survey Water Resources Investigations Report 03-4045. Comprehensive water quality of the Boulder Creek Watershed, Colorado, during high-flow and low-flow conditions, 2000: U.S. Geological Survey Water Resources Investigations Report 03-4045. ; 2003. p. 185-197.\par \par Hood EW, Williams MW, Caine N. Landscape Controls on Organic and Inorganic Nitrogen Leaching across an Alpine/Subalpine Ecotone, Green Lakes Valley, Colorado Front Range.  2003;6:31-45.\par \par Hood EW, McKnight D, Williams MW. Sources and chemical character of dissolved organic carbon (DOC) across an alpine/subalpine ecotone, Green Lakes Valley, Colorado Front Range, USA.  2003;39(1188).\par \par Hazen JH, Williams MW, Stover B, Wireman M. Characterisation of Acid Mine Drainage using a Combination of Hydrometric, Chemical and Isotropic Analyses, Mary Murphy Mine, Colorado.  2002;24:1-22.\par \par Taylor S, Feng X, Williams MW, McNamara J. How isotopic fractionation of snowmelt affects hydrograph separation.  2002;16:3683-3690.\par \par Hood RW, Williams MW, Caine N. Yields of dissolved organic C, N, and P, from three high-elevation catchments, colorado front range, U.S.A.  2002;2:165-180.\par \par Williams MW, Manthorne D. Class I areas at risk: Event-based nitrogen deposition to a high-elevation, western site.  2001;1.\par \par Williams MW, Caine N. Hydrology and hydrochemistry in alpine dynamics. In: Seastedt TR Structure and function of an alpine ecosystem: Niwot Ridge, Colorado. Structure and function of an alpine ecosystem: Niwot Ridge, Colorado. ; 2001. p. .\par \par Inyan B, Williams MW. Protecting headwater catchments from future degradation, San Miguel River, CO.  2001;21(1):71-78.\par \par Williams MW, Hood E, Caine N. Role of organic nitrogen in the nitrogen cycle of a high-elevation catchment, Colorado Front Range.  2001;37 (10):2569-2581.\par \par Hood EW, Williams MW. Seasonal changes in the character and nitrogen content of dissolved organic material in an alpine/subalpine headwater catchment.  2001;1.\par \par Pomeroy JW, Holler P, Marsh P, Walker DA, Williams MW. Snow vegetation interactions: issues for a new initiative. In: and A.J. Dolman, A.J. Hall KOPMLTJW Soil-Vegetation-Atmosphere Transfer Schemes and Large Scale Hydrological Models. IAHS Publ. No. 270. Soil-Vegetation-Atmosphere Transfer Schemes and Large Scale Hydrological Models. IAHS Publ. No. 270. Wallingford, UK; 2001. p. 299-305.\par \par Williams MW, Hood EW, Ostberg G, Francou B, Galarraga R. Synoptic survey of surface water isotopes and nutrient concentrations, paramo high-elevation region, antisana ecological reserve, ecuador.  2001;33(4).\par \par Williams MW, Tonnessen KA. Critical loads for inorganic nitrogen deposition in the Colorado Front Range,USA.  2000;10(6):1648-1665.\par \par Williams MW, Rikkers MR, Pfeffer WT. Ice columns and frozen rills in a warm snowpack, Green Lakes Valley, Colrado, USA.  2000;31(3):169-186.\par \par Meixner T, Bales RC, Williams MW, Campbell DH, Baron JS. Stream chemistry modeling of two watersheds in the Front Range, Colorado.  2000;36:77-88.\par \par Williams MW, Sommerfeld R, Massman S, Rikkers M. Correlation lengths of melwater flow through ripe snowpacks, Colorado Front Range, USA.  1999;13:1807-1826.\par \par Williams MW, Cline D, Hartman MA, Bardsley T. Data for snowmelt model development, calibration, and verfication at an alpine site, Colorado Front Range.  1999;35:3205-3209.\par \par Brooks PD, Williams MW, Schmidt SK. Inorganic nitrogen and microbial biomass dynamics before and during spring snowmelt.  1998;43:1-15.\par \par Williams MW, Brooks PD, Seastedt TS. Nitrogen and carbon soil dynamics in response to climate change in a high-elevation ecosystem in the Rocky Mountains, U.S.A.  1998;30:26-30.\par \par Bieber AJ, Williams MW, Johnsson MJ, Davinroy TC. Nitrogen transformations in alpine talus fields, Green Lakes Valley, Front Range, Colorado, U.S.A.  1998;30:266-271.\par \par Williams MW, Bardsley T, Rikkers M. Overestimation of snow depth and inorganic nitrogen wetfall using NADP data, Niwot Ridge, Colorado.  1998;32(22):3827-3833.\par \par Williams MW, Bardsley T, Rikkers M. Oversampling of snow and overestimation of inorganic nitrogen wetfall using NADP data, Niwot Ridge, Colorado.  1998;32 (22):3827-3833.\par \par Inyan BJ, Williams MW, Tonnessen K, Turk JT, Campbell DH. Seasonal inorganic nitrogen release in alpine lakes on the Colorado  western slope.  1998;19(5):406-420.\par \par Williams MW, Davinroy T, Brooks PD. Organic and inorganic nitrogen pools in talus fields and subtalus water, Green Lakes Valley, Colorado Front Range.  1997;11:1747-1760.\par \par Brooks PD, Schmidt SK, Williams MW. Winter production of CO2 and N2O from alpine tundra: environmental controls and relationship to inter-system C and N fluxes.  1997;110:403-413.\par \par Williams MW, Losleben M, Caine N, Greenland D. Changes in climate and hydrochemical responses in a high-eleveation catchment in the Rocky Mountains, USA.  1996;41(5):939-946.\par \par Brooks PD, Williams MW, Schmidt SK. Microbial activity under alpine snowpacks, Niwot Ridge, Colorado.  1996;32:93-113.\par \par Williams MW, Brooks PD, Mosier A, Tonnessen KA. Mineral nitrogen transformations in and under seasonal snow in a high-elevation catchment in the Rocky Mountains, United States.  1996;32(10):3161-3171.\par \par Williams MW, Baron JS, Caine N, Sommerfeld R, Sanford R. Nitrogen saturation in the Rocky Mountains.  1996;30(2):640-646.\par \par Williams MW, Yang D, Liu F, Turk J, Melack J. Controls on the major ion chemistry of the Urumqi River, Tian Shan, People's Republic of China.  1995;172:209-229.\par \par Cress RG, Williams MW, Sievering H. Dry depositional loading of nitrogen to an alpine snowpack, Niwot Ridge, Colorado. In: Tranter M Biogeochemistry of Seasonally Snow Covered Basins. Vol. 228. Biogeochemistry of Seasonally Snow Covered Basins. Wallingford, UK,; 1995. p. 33-40.\par \par Williams MW, Bales RC, Brown AD, Melack JM. Fluxes and transformations of nitrogen in a high-elevation catchment, Sierra Nevada.  1995;28:1-31.\par \par Brooks PD, Williams MW, Walker DA, Schmidt SK. The Niwot Ridge snow fence experiment: Biogeochemical responses to changes in the seasonal snowpack. In: Tranter M Biogeochemistry of Seasonally Snow Covered Basins. Vol. 228. Biogeochemistry of Seasonally Snow Covered Basins. Wallingford, UK,; 1995. p. 293-302.\par \par Liu F, Williams MW, Yang D, Melack J. Snow and water chemistry of a headwater alpine basin, Urumqi River, Tian Shan, China. In: Tranter M Biogeochemistry of Seasonally Snow Covered Basins. Vol. 228. Biogeochemistry of Seasonally Snow Covered Basins. Wallingford, UK,; 1995. p. 207-219.\par \par Brooks PD, Williams MW, Schmidt SK. Snowpack controls on soil nitrogen dynamics in the Colorado alpine. In: Tranter M Biogeochemistry of Seasonally Snow Covered Basins. Vol. 228. Biogeochemistry of Seasonally Snow Covered Basins. Wallingford, UK,; 1995. p. 283-292.\par \par }