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Niwot Ridge LTER Publications:

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2009

The development and analysis of climate datasets for National Park science and management: A guide to methods for making climate records useful and tools to explore critical questions.

Kittel, T., National Park Service, Unpublished Report 2169763
URL: https://irma.nps.gov/App/Reference/Profile/2169763

2009

DayCent-Chem simulations of ecological and biogeochemical processes of eight mountain ecosystems in the United States.

Hartman, M.D., Baron, J.S., Clow, D.W., Creed, I.F., Driscoll, C.T., Ewing, H.A., Haines, B.D., Knoepp, J., Lajtha, K., Ojima, D.S., Parton, W.J., Renfro, J., Robinson, R.B., Van Miegroet, H., Weathers, K.C., Williams, M.W., US Geological Survey, Scientific Investigations, Report 2009-5150

Niwot personnel authors: Mark W. Williams

2009

Biological and physical influences on the carbon isotope content of CO2 in a subalpine forest snowpack, Niwot Ridge, Colorado.

Bowling, D.R., Massman, W.J., Schaeffer, S.M., Burns, S.P., Monson, R.K., Williams, M.W., Biogeochemistry 95 (1) :37-59

2009

Storage and release of solutes from a subalpine seasonal snowpack: soil and stream water response, Niwot Ridge, Colorado.

Williams, M.W., Seibold, C., Chowanski, K., Biogeochemistry 95 (1) :77-94

2009

Winter and summer nitrous oxide and nitrogen oxides fluxes from a seasonally snow-covered subalpine meadow at Niwot Ridge, Colorado.

Filippa, G., Freppaz, M., Williams, M.W., Helmig, D., Liptzin, D., Seok, B., Hall, B., Chowanski, K., Biogeochemistry 95 (1) :131-149

2009

Process-level controls on CO2 fluxes from a seasonally snow-covered subalpine meadow soil, Niwot Ridge, Colorado.

Liptzin, D., Williams, M.W., Helmig, D., Seok, B., Filippa, G., Chowanski, K., Hueber, J., Biogeochemistry 95 (1) :151-166

2009

An automated system for continuous measurements of trace gas fluxes through snow: an evaluation of the gas diffusion method at a subalpine forest site, Niwot Ridge, Colorado.

Seok, B., Helmig, D., Williams, M.W., Liptzin, D., Chowanski, K., Hueber, J., Biogeochemistry 95 (1) :95-113

2009

Fluxes and chemistry of nitrogen oxides in the Niwot Ridge, Colorado, snowpack.

Helmig, D., Seok, B., Williams, M.W., Hueber, J., Sanford, R. Jr., Biogeochemistry 95 (1) :115-130

2009

A comparison of water and carbon dioxide exchange at a windy alpine tundra and subalpine forest site near Niwot Ridge, Colorado.

Blanken, P., Williams, M.W., Burns, S.P., Monson, R.K., Knowles, J., Chowanski, K., Ackerman, T., Biogeochemistry 95 (1) :61-76

2009

White on green: under-snow microbial processes and trace gas fluxes through snow, Niwot Ridge, Colorado Front Range.

Williams, M.W., Helmig, D., Blanken, P., Biogeochemistry 95 (1) :1-12

2009

Regional analysis of social-ecological systems.

Bourgeron, P.S., Humphries, H.C., Riboli-Sasco, L., Natures Sciences Societes 17 :185-193

Niwot personnel authors: Patrick S. Bourgeron, Hope C. Humphries

2009

The role of humic acid, silicon, and pH in accrual of periphytic biomass in a subalpine stream, Colorado Front Range.

Toetz, D., Payton, M., Journal of Freshwater Ecology 24 (1) :1-6

2009

Assessment of lake sensitivity to acidic deposition in national parks of the Rocky Mountains.

Nanus, L., Williams, M.W., Campbell, D.H., Tonnessen, K.A., Blett, T., Clow, D.W., Ecological Applications 19 (4) :961-973

2009

Production of microbially-derived fulvic acid from photolysis of quinone-containing extracellular products of phytoplankton.

Miller, M.P., McKnight, D.M., Chapra, S.C., Aquatic Sciences 71 :170-178

2009

Factors controlling streambed coverage of Didymosphenia geminata in two regulated streams in the Colorado Front Range.

Miller, M.P., McKnight, D.M., Cullis, J.D., Greene, A., Vietti, K., Liptzin, D., Hydrobiologia 630 (1) :207-218

2009

Can we measure snow depth with GPS receivers?.

Larson, K.M., Gutmann, E.D., Zavorotny, V.U., Braun, J.J., Williams, M.W., Nievinski, F.G., Geophysical Research Letters 36 :L17502 , DOI: 10.1029/2009GL039430

2009

Negative associations between seedlings and adult plants in two alpine plant communities.

Forbis, T.A., Arctic, Antarctic, and Alpine Research 41 (3) :301-308

2009

Nutrient availability and phytoplankton nutrient limitation across a gradient of atmospheric nitrogen deposition.

Elser, J.J., Kyle, M., Steger, L., Nydick, K.R., Baron, J.S., Ecology 90 (11) :3062-3073

2009

Shifts in lake N:P stoichiometry and nutrient limitation driven by atmospheric nitrogen deposition.

Elser, J.J., Andersen,T., Baron, J.S., Bergstrom, A.-K., Jansson, M., Kyle, M., Nydick, K.R., Steger, L., Hessen, D.O., Science 326 :835-837

2009

Microbial activity and diversity during extreme freeze-thaw cycles in periglacial soils, 5400 m elevation, Cordillera Vilcanota, Peru.

Schmidt S.K., Nemergut, D.R., Miller, A.E., Freeman, K.R., King, A.J., Seimon, A., Extremophiles 13 :807-816

2009

Environmental DNA sequencing primers for eutardigrades and bdelloid rotifers.

Robeson, M.S., Costello, E.K., Freeman, K.R., Whiting, J., Adams, B., Martin, A.P., Schmidt, S.K., BMC Ecology , DOI: 10.1186/1472-6785-9-25

2009

Patterns of snow, deposition, and soil nutrients at multiple spatial scales at a Rocky Mountain tree line ecotone.

Liptzin, D., Seastedt, T.R., Journal of Geophysical Research 114 :G04002 , DOI: 10.1029/2009JG000941

2009

Evidence that chytrids dominate fungal communities in high-elevation soils.

Freeman, K.R., Martin, A.P., Karki, D., Lynch, R.C., Mitter, M.S., Meyer, A.F., Longcore, J.E., Simmons, D.R., Schmidt, S.K., Proceedings of the National Academy of Sciences 106 :18315-18320

2009

Exponential growth of "snow molds" at sub-zero temperatures: an explanation for high beneath-snow respiration rates and Q10 values.

Schmidt, S.K., Wilson, K.L., Monson, R.K., Lipson, D.A., Biogeochemistry 95 :13-21

2009

The trade-off between growth rate and yield in microbial communities and the consequences for soil respiration in a high elevation coniferous forest.

Lipson, D.A., Monson, R.K., Schmidt, S.K., Weintraub, M.N., Biogeochemistry 95 :23-35

2009

Controls over ozone deposition to a high elevation subalpine forest.

Turnipseed, A.A., Burns, S.P., Moore, D.J.P., Hu, J., Guenther, A.B., Monson, R.K., Agricultural and Forest Meteorology 149 :1447-1459

2009

A cable-borne tram for atmospheric measurements along transects.

Oncley, S.P., Schwenz, K., Burns, S.P., Sun, J., Monson, R.K., Journal of Atmospheric and Oceanic Technology 26 :462-473

2009

Ecohydrological controls on snowmelt partitioning in mixed-conifer sub-alpine forests.

Molotch, N.P., Brooks, P.D., Burns, S.P., Litvak, M., Monson, R.K., McConnell, J.R., Musselman, K., Ecohydrology 2 :129-142

2009

Longer growing seasons lead to less carbon sequestration by a subalpine forest.

Hu, J., Moore, D.J.P., Burns, S.P., Monson, R.K., Global Change Biology , DOI: 10.1111/j.1365-2486.2009.01967.x

2009

An evaluation of calibration techniques for in situ carbon dioxide measurements using a programmable portable trace-gas measuring system.

Burns, S.P., Delany, A.C., Sun, J., Stephens, B.B., Oncley, S.P., Maclean, G.D., Semmer, S.R., Schroter, J., Ruppert, J., Journal of Atmospheric and Oceanic Technology 26 :291-316

2009

Soil, plant, and transport influences on methane in a subalpine forest under high ultraviolet irradiance.

Bowling, D.R., Miller, J.B., Rhodes, M.E., Burns, S.P., Monson, R.K., Baer, D., Biogeosciences 6 :1311-1324

2009

Release and uptake of volatile inorganic and organic gases through the deep, winter snowpack at Niwot Ridge, Colorado.

Helmig, D., Apel, E.C., Balke, D., Ganzeveld, L., Lefer, B., Swanson, A.L., Biogeochemistry 95 (1) :167-183

2009

Snow cover effects on glacier ice surface temperature.

Maggioni, M., Freppaz, M., Piccini, P., Williams, M.W., Zanini, E., Arctic, Antarctic, and Alpine Research 41 (3) :323-329

2009

Changes in the surface roughness of snow from millimetre to metre scales.

Fassnacht, S.R., Williams, M.W., Corrao, M.V., Ecological Complexity 6 :221-229

2009

A model of degradation and production of three pools of dissolved organic matter in an alpine lake.

Miller, M.P., McKnight, D.M., Chapra, S.C., Williams, M.W., Limnology and Oceanography 54 (6) :2213-2227

2009

Response of the phytoplankton community in an alpine lake to drought conditions: Colorado Rocky Mountain Front Range, U.S.A..

Flanagan, C.M., McKnight, D.M., Liptzin, D., Williams, M.W., Miller, M.P., Arctic, Antarctic, and Alpine Research 41 (2) :191-203

2009

Fine root inputs to soil reduce growth of a neighbouring plant via distinct mechanisms dependent on root carbon chemistry.

Meier, C.L., Keyserling, K., Bowman, W.D., Journal of Ecology 97 (5) :941-949

2009

Soil CO2 flux and photoautotrophic community composition in high-elevation, barren soil.

Freeman, K.R., Pescador, M.Y., Reed, S.C., Costello, E.K., Robeson, M.S., Schmidt, S.K., Environmental Microbiology 11 (3) :674-686

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This material is based upon work supported by the National Science Foundation under Cooperative Agreement #DEB-1637686. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necesarily reflect the views of the National Science Foundation.

Please contact lternwt@colorado.edu with questions, comments, or for technical assistance regarding this website.

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