Publications

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Publications Found: 106

Improved Global Simulations Of Gross Primary Product Based On A New Definition Of Water Stress Factor And A Separate Treatment Of C3 And C4 Plants
Yan, H., Wang, S., Billesbach, D., Oechel, W., Bohrer, G., Meyers, T., Martin, T. A., Matamala, R., Phillips, R. P., Rahman, F., Yu, Q., Shugart, H. H.


Journal: Ecological Modelling, Volume 297: 42-59 (2015). DOI: 10.1016/j.ecolmodel.2014.11.002 Sites: US-UMB

Large eddy simulations of surface roughness parameter sensitivity to canopy structure characteristics
Maurer, K.D. Bohrer, G. Kenny, W.T. Ivanov, V.Y.

Surface roughness parameters, namely the roughness length and displacement height, are an integral input used to model surface fluxes. However, most models assume these parameters to be a fixed property of plant functional type and disregard the governing structural heterogeneity and dynamics. In this study, we use large-eddy simulations …


Journal: Biogeosciences, Volume 12: 2533-2548 (2015). DOI: 10.5194/bg-12-2533-2015 Sites: US-UMB

Moderate forest disturbance as a stringent test for gap and big-leaf models
Bond-Lamberty, B. Fisk, J. Holm, J.A. Bailey, V. Bohrer, G. Gough, C.M.

Disturbance-induced tree mortality is a key factor regulating the carbon balance of a forest, but tree mortality and its subsequent effects are poorly represented processes in terrestrial ecosystem models. It is thus unclear whether models can robustly simulate moderate (non-catastrophic) disturbances, which tend to increase biological …


Journal: Biogeosciences, Volume 12: 513-526 (2015). DOI: 10.5194/bg-12-513-2015 Sites: US-UMB

Net Primary Production Of A Temperate Deciduous Forest Exhibits A Threshold Response To Increasing Disturbance Severity
Stuart-Haëntjens, E. J., Curtis, P. S., Fahey, R. T., Vogel, C. S., Gough, C. M.


Journal: Ecology, Volume 96 (9): 2478-2487 (2015). DOI: 10.1890/14-1810.1 Sites: US-UMB, US-UMd

Greenness Indices From Digital Cameras Predict The Timing And Seasonal Dynamics Of Canopy-Scale Photosynthesis
Toomey, M., Friedl, M. A., Frolking, S., Hufkens, K., Klosterman, S., Sonnentag, O., Baldocchi, D. D., Bernacchi, C. J., Biraud, S. C., Bohrer, G., Brzostek, E., Burns, S. P., Coursolle, C., Hollinger, D. Y., Margolis, H. A., McCaughey, H., Monson, R. K., Munger, J. W., Pallardy, S., Phillips, R. P., Torn, M. S., Wharton, S., Zeri, M., Richardson, A. D.

The proliferation of digital cameras co‐located with eddy covariance instrumentation provides new opportunities to better understand the relationship between canopy phenology and the seasonality of canopy photosynthesis. In this paper we analyze the abilities and limitations of canopy color metrics measured by digital repeat photography …


Journal: Ecological Applications, Volume 25 (1): 99-115 (2015). DOI: http://doi.org/10.1890/14-0005.1 Sites: US-ARM, US-Bar, US-Ha1, US-Ho1, US-MMS, US-MOz, US-NR1, US-UMB, US-UMd, US-Var, US-Wrc

As Forests Age, Their Climate Effects Shift
Shultz, David

Although it may be difficult for us to observe in our short lifetimes, the composition of trees in a forest can be a very variable thing. When a forest is clear-cut or thinned by fire, the first trees to rebound are often the fastest growing—those that can sprout quicker than their competitors. However, over time, these speedy …


Journal: EOS, Volume 96: 1-1 (2015). DOI: 10.1029/2015EO026455 Sites: US-UMB

Modeling Forest Carbon Cycle Response To Tree Mortality: Effects Of Plant Functional Type And Disturbance Intensity
Frasson, R. P., Bohrer, G., Medvigy, D., Matheny, A. M., Morin, T. H., Vogel, C. S., Gough, C. M., Maurer, K. D., Curtis, P. S.


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 120 (11): 2178-2193 (2015). DOI: 10.1002/2015JG003035 Sites: US-UMB, US-UMd

Does day and night sampling reduce spurious correlation between canopy photosynthesis and ecosystem respiration?
Dennis Baldocchi, Cove Sturtevant

It is necessary to partition eddy covariance measurements of carbon dioxide exchange into its offsetting gross fluxes, canopy photosynthesis, and ecosystem respiration, to understand the biophysical controls on the net fluxes. And independent estimates of canopy photosynthesis (G) and ecosystem respiration (R) are needed to validate …


Journal: Agricultural and Forest Meteorology, Volume 207: 117-126 (2015). DOI: 10.1016/j.agrformet.2015.03.010 Sites: CA-Ca1, CA-Ca2, CA-Ca3, CA-Let, CA-Mer, CA-NS1, CA-NS3, CA-NS5, CA-NS6, CA-NS7, CA-Oas, CA-Obs, CA-Ojp, CA-Qcu, CA-Qfo, CA-SJ2, CA-SJ3, CA-TP4, CA-WP1, US-ARM, US-Aud, US-Bo1, US-Ho1, US-Ho2, US-IB2, US-KS2, US-MMS, US-MOz, US-NC2, US-NR1, US-SO2, US-SO3, US-SO4, US-SP2, US-SP3, US-SRM, US-Ton, US-Tw3, US-UMB, US-Var, US-WBW, US-Wkg, US-Wrc

Observations Of Stem Water Storage In Trees Of Opposing Hydraulic Strategies
Matheny, A. M., Bohrer, G., Garrity, S. R., Morin, T. H., Howard, C. J., Vogel, C. S.


Journal: Ecosphere, Volume 6 (9): art165 (2015). DOI: 10.1890/ES15-00170.1 Sites: US-UMB

Forest-Atmosphere Bvoc Exchange In Diverse And Structurally Complex Canopies: 1-D Modeling Of A Mid-Successional Forest In Northern Michigan
Bryan, A. M., Cheng, S. J., Ashworth, K., Guenther, A. B., Hardiman, B. S., Bohrer, G., Steiner, A. L.


Journal: Atmospheric Environment, Volume 120: 217-226 (2015). DOI: 10.1016/j.atmosenv.2015.08.094 Sites: US-UMB