Publications

Publications Found: 1437

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

Age Effects On The Water-Use Efficiency And Water-Use Dynamics Of Temperate Pine Plantation Forests
Skubel, R., Arain, M. A., Peichl, M., Brodeur, J. J., Khomik, M., Thorne, R., Trant, J., Kula, M.

This study analyzed age-related water use dynamics across three temperate conifer forest plantations (aged 11-, 39-, and 74-years old, as of 2013, henceforth referred to as TP02, TP74, and TP39, where the last two digits represent the year of planting) in southern Ontario, Canada from 2008 to 2013. Eddy covariance-measured mean evapotranspiration …


Journal: Hydrological Processes, Volume 29 (18): 4100-4113 (2015). DOI: 10.1002/hyp.10549 Sites: CA-TP1, CA-TP3, CA-TP4

Drought-Influenced Mortality Of Tree Species With Different Predawn Leaf Water Dynamics In A Decade-Long Study Of A Central Us Forest
Gu, L., Pallardy, S. G., Hosman, K. P., Sun, Y.


Journal: Biogeosciences, Volume 12 (10): 2831-2845 (2015). DOI: 10.5194/bg-12-2831-2015 Sites: US-MOz

Observations of 14CO2 In Ecosystem Respiration From A Temperate Deciduous Forest In Northern Wisconsin
Phillips, C. L., McFarlane, K. J., LaFranchi, B., Desai, A. R., Miller, J. B., Lehman, S. J.

The 14CO2 composition of plant and soil respiration can be used to determine the residence time of photosynthetically fixed carbon before it is released back to the atmosphere. To estimate the residence time of actively cycled carbon in a temperate forest, we employed two approaches for estimating the Δ14CO2 of ecosystem respiration …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 120 (4): 600-616 (2015). DOI: 10.1002/2014jg002808 Sites: US-WCr

Environmental And Vegetation Controls On The Spatial Variability Of CH4 Emission From Wet-Sedge And Tussock Tundra Ecosystems In The Arctic
McEwing, K. R., Fisher, J. P., Zona, D.

Aims

Despite multiple studies investigating the environmental controls on CH4 fluxes from arctic tundra ecosystems, the high spatial variability of CH4 emissions is not fully understood. This makes the upscaling of CH4


Journal: Plant And Soil, Volume 388 (1-2): 37-52 (2015). DOI: 10.1007/s11104-014-2377-1 Sites: US-Ivo

Divergence Of Actual And Reference Evapotranspiration Observations For Irrigated Sugarcane With Windy Tropical Conditions
Anderson, R. G., Wang, D., Tirado-Corbalá, R., Zhang, H., Ayars, J. E.

Standardized reference evapotranspiration (ET) and ecosystem-specific vegetation coefficients are frequently used to estimate actual ET. However, equations for calculating reference ET have not been well validated in tropical environments. We measured ET (ETEC) using eddy covariance (EC) towers at two irrigated sugarcane …


Journal: Hydrology And Earth System Sciences, Volume 19 (1): 583-599 (2015). DOI: 10.5194/hess-19-583-2015 Sites: US-SuS, US-SuW

Probing The Past 30-Year Phenology Trend Of Us Deciduous Forests
Yue, X., Unger, N., Keenan, T. F., Zhang, X., Vogel, C. S.

Phenology is experiencing dramatic changes over deciduous forests in the USA. Estimates of trends in phenology on the continental scale are uncertain, however, with studies failing to agree on both the magnitude and spatial distribution of trends in spring and autumn. This is due to
the sparsity of in situ records, …


Journal: Biogeosciences, Volume 12 (15): 4693-4709 (2015). DOI: 10.5194/bg-12-4693-2015 Sites: US-Ha1, US-MMS, US-MOz, US-UMB

Long-Term Variability In The Water Budget And Its Controls In An Oak-Dominated Temperate Forest
Xie, J., Sun, G., Chu, H., Liu, J., McNulty, S. G., Noormets, A., John, R., Ouyang, Z., Zha, T., Li, H., Guan, W., Chen, J.

Water availability is one of the key environmental factors that control ecosystem functions in temperate forests. Changing climate is likely to alter the ecohydrology and other ecosystem processes, which affect forest structures and functions. We constructed a multi-year water budget (2004–2010) and quantified environmental controls …


Journal: Hydrological Processes, Volume 28 (25): 6054-6066 (2014). DOI: 10.1002/hyp.10079 Sites: US-Oho

Climate Change And Fire Management In The Mid-Atlantic Region
Clark, K. L., Skowronski, N., Renninger, H., Scheller, R.

In this review, we summarize the potential impacts of climate change on wildfire activity in the mid-Atlantic region, and then consider how the beneficial uses of prescribed fire could conflict with mitigation needs for climate change, focusing on patters of carbon (C) sequestration by forests in the region. We use a synthesis of …


Journal: Forest Ecology And Management, Volume 327: 306-315 (2014). DOI: 10.1016/j.foreco.2013.09.049 Sites: US-Ced

Effects Of Heat And Drought On Carbon And Water Dynamics In A Regenerating Semi-Arid Pine Forest: A Combined Experimental And Modeling Approach
Ruehr, N. K., Law, B. E., Quandt, D., Williams, M.


Journal: Biogeosciences, Volume 11 (15): 4139-4156 (2014). DOI: 10.5194/bg-11-4139-2014 Sites: US-Me6