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Knowles, John

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John Knowles

PhD, University of Colorado, Boulder, 2015
MA, University of Colorado, Boulder, 2009
BA, Vassar College, 2003
Office: 303-495-6339



John Knowles studies ecosystem ecology, specializing in mountain ecosystems, land-atmosphere exchange, eddy covariance, carbon cycling, biogeochemistry, ecohydrology, surface water hydrology, and biometeorology.

Disciplines: Biogeochemistry • Hydrology • Soil science • Atmospheric science




Institute of Arctic & Alpine Research


Surface and subsurface water contributions to streamflow from a mesoscale watershed in complex mountain terrain.

Zhang, Q. , Knowles, J.F., Barnes, R.T., Cowie, R.M., Rock, N., Williams, M.W., Hydrological Processes, 32, 7, 954-967, DOI: 10.1002/hyp.11469,


A Comparison of the Diel Cycle of Modeled and Measured Latent Heat Flux During the Warm Season in a Colorado Subalpine Forest.

Burns, S.P., Swenson, S.C., Wieder, W.R., Lawrence, D.M., Bonan, G.B. , Knowles, J.F., Blanken, P.D., Journal of Advances in Modeling Earth Systems, 10, 3, 617-651, DOI: 10.1002/2017MS001248,


Snowmelt-Driven Trade-Offs Between Early and Late Season Productivity Negatively Impact Forest Carbon Uptake During Drought.

Knowles, J.F., Molotch, N.P., Trujillo, E., Litvak, M.E., Geophysical Research Letters, 45, 7, 3087-3096, DOI: 10.1002/2017GL076504,


Ecosystem function in complex mountain terrain: Combining models and long-term observations to advance process-based understanding.

Wieder, W.R., Knowles, J.F., Blanken, P.D., Swenson, S.C., Suding, K.N., Wiley Online Library, Journal of Geophysical Research: Biogeosciences, 122, 4, 825-845, DOI: 10.1002/2016JG003704,


On the use of a snow aridity index to predict remotely sensed forest productivity in the presence of bark beetle disturbance.

Knowles, J.F., Lestak, L.R., Molotch, N.P., Wiley Online Library, Water Resources Research, 4891-4906, DOI: 10.1002/2016WR019887,


Sources of streamflow along a headwater catchment elevational gradient.

Cowie, R.M., Knowles, J.F, Dailey, K.R., Williams, M.W., Mills, T.J., Molotch, N.P., Journal of Hydrology, 549, 163-178, URL:


Convergent approaches to determine an ecosystem's transpiration fraction.

Berkelhammer, M., Noone, D.C., Wong, T.E., Burns, S.P., Knowles, J.F., Kaushik, A., Blanken, P.D., Williams, M.W., Global Biogeochemical Cycles, 30, 6, 933-951, DOI: 10.1002/2016GB005392,


Wet meadow ecosystems contribute the majority of overwinter soil respiration from snow-scoured alpine tundra.

Knowles, JF, Blanken, PD, Williams, MW, Journal of Geophysical Research, 121, 1118-1130, DOI: 10.1002/2015JG003081,


The relative contributions of alpine and subalpine ecosystems to the water balance of a mountainous, headwater catchment.

Knowles, J. F., Harpold, A. A., Cowie, R., Zeliff, M., Barnard, H. R., Burns, S. P., Blanken, P. D., Morse, J. F., Williams, M. W., Hydrological Processes, 29, 22, 4794-4808, DOI: 10.1002/hyp.10526,


Soil respiration variability across a soil moisture and vegetation community gradient within a snow-scoured alpine meadow.

Knowles, J. F., Blanken, P. D., Williams, M. W., Biogeochemistry, 125, 2, 185-202, DOI: 10.1007/s10533-015-0122-3,


Fluxes of energy, water, and carbon dioxide from mountain ecosystems at Niwot Ridge, Colorado.

Knowles, J.F., Burns, S.P., Blanken, P.D., Monson, R.K., Plant Ecology & Diversity, DOI: 10.1080/17550874.2014.904950,

CU Boulder

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.

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