Publications

Publications Found: 1378

Overstory species composition, structure, and conservation challenges of a mature, natural-origin pine stand after decades of management
Don C. Bragg

This study provides a preliminary assessment of 4 compartments on the Crossett
Experimental Forest (CEF) being restored to old-growth-like conditions. After being
partially cleared for agriculture or lumbered in the late 1910s, Compartments 1, 2, 11, and
12 were included in a combination of pulpwood-thinning and uneven-aged cutting-cycle
studies …


Journal: Southeastern Naturalist, Volume 15 (Special Issue 9): 16-41 (2016), ISBN . DOI: Sites: US-Cst

How many measurements are needed to estimate accurate daily and annual soil respiration fluxes? Analysis using data from a temperate rainforest
Pérez-Quezada, J., Brito, C.E., Cabezas, J., Galleguillos, M., Fuentes, J.P., Bown, H., Franck, N.

Making accurate estimations of daily and annual Rs fluxes is key for understanding the carbon cycle process and projecting effects of climate change. In this study we used high-frequency sampling (24 measurements per day) of Rs in a temperate rainforest during 1 year, with the objective of answering the questions of when and how …


Journal: Biogeosciences, Volume 13: 6599-6609 (2016), ISBN . DOI: 10.5194/bg-13-6599-2016 Sites: CL-SDF

The contribution of an overlooked transport process to a wetland’s methane emissions.
Poindexter, C. M., D. D. Baldocchi, J. H. Matthes, S. H. Knox, and E. A. Variano.

Wetland methane transport processes affect what portion of methane produced in wetlands reaches the atmosphere. We model what has been perceived to be the least important of these transport processes: hydrodynamic transport of methane through wetland surface water and show that its contribution to total methane emissions from a temperate …


Journal: Geophysical Research Letters, Volume 43: 6276-6284 (2016), ISBN . DOI: 10.1002/2016gl068782 Sites: US-Tw1

Climate Indices Strongly Influence Old-Growth Forest Carbon Exchange
Matthias Falk

We present a decade and a half (1998-2013) of carbon dioxide fluxes from an old-growth stand in the American Pacific Northwest to identify ecosystem-level responses to Pacific teleconnection patterns, including the El Niño/Southern Oscillation (ENSO). This study provides the longest, continuous record of old-growth eddy flux data …


Journal: Environmental Research Letters, Volume 11: 1-12 (2016), ISBN . DOI: Sites: US-Wrc

Terrestrial Carbon Balance In A Drier World: The Effects Of Water Availability In Southwestern North America
Biederman, J. A., Scott, R. L., Goulden, M. L., Vargas, R., Litvak, M. E., Kolb, T. E., Yepez, E. A., Oechel, W. C., Blanken, P. D., Bell, T. W., Garatuza-Payan, J., Maurer, G. E., Dore, S., Burns, S. P.

Global modeling efforts indicate semiarid regions dominate the increasing trend and interannual variation of net CO2 exchange with the atmosphere, mainly driven by water availability. Many semiarid …


Journal: Global Change Biology, Volume 22 (5): 1867-1879 (2016), ISBN . DOI: 10.1111/gcb.13222 Sites: US-SRG, US-Whs, US-Wkg

Bayesian Optimization Of The Community Land Model Simulated Biosphere–Atmosphere Exchange Using CO2 Observations From A Dense Tower Network And Aircraft Campaigns Over Oregon
Schmidt, A., Law, B. E., Göckede, M., Hanson, C., Yang, Z., Conley, S.

The vast forests and natural areas of the Pacific Northwest compose one of the most productive ecosystems in the Northern Hemisphere. The heterogeneous landscape of Oregon poses a particular challenge to ecosystem models. This study presents a framework using a scaling factor Bayesian inversion to improve the modeled atmosphere–biosphere …


Journal: Earth Interactions, Volume 20 (22): 1-35 (2016), ISBN . DOI: 10.1175/EI-D-16-0011.1 Sites: US-Bsg

Biophysical controls on interannual variability in ecosystem-scale CO2 and CH4 exchange in a California rice paddy.
Knox, S. H., J. H. Matthes, C. Sturtevant, P. Y. Oikawa, J. Verfaillie, and D. Baldocchi.

We present 6.5 years of eddy covariance measurements of fluxes of methane (FCH4) and carbon dioxide (FCO2) from a flooded rice paddy in Northern California, USA. A pronounced warming trend throughout the study associated with drought and record high temperatures strongly influenced carbon (C) budgets and provided insights into …


Journal: Journal of Geophysical Research-Biogeosciences, Volume 121: 978-1001 (2016), ISBN . DOI: 10.1002/2015JG003247 Sites: US-Twt

The impact of expanding flooded land area on the annual evaporation of rice. Agricultural and Forest Meteorology
Baldocchi, D., S. Knox, I. Dronova, J. Verfaillie, P. Oikawa, C. Sturtevant, J. H. Matthes, and M. Detto.

The amount of published data on annual evaporation on rice remains extremely limited despite the role of rice as a key food source. We report on six years of rice evaporation measurements, based on the eddy covariance method. This rice was cultivated in the hot dry climate of California, where water is a scarce and precious resource. …


Journal: Agricultural and Forest Meteorology, Volume 223: 181-193 (2016), ISBN . DOI: http://dx.doi.org/10.1016/j.agrformet.2016.04.001 Sites: US-Twt

2016. Effects of seasonality, transport-pathway, and spatial structure on greenhouse gas fluxes in a restored wetland.
McNicol, G., C. S. Sturtevant, S. H. Knox, I. Dronova, D. D. Baldocchi, and W. L. Silver.


Journal: Global Change Biology, Volume : nnn-nnn (2016), ISBN . DOI: 10.1111/gcb.13580 Sites: US-Myb

Ten-Year Variability In Ecosystem Water Use Efficiency In An Oak-Dominated Temperate Forest Under A Warming Climate
Xie, J., Chen, J., Sun, G., Zha, T., Yang, B., Chu, H., Liu, J., Wan, S., Zhou, C., Ma, H., Bourque, C. P., Shao, C., John, R., Ouyang, Z.

The impacts of extreme weather events on water–carbon (C) coupling and ecosystem-scale water use efficiency (WUE) over a long term are poorly understood. We analyzed the changes in ecosystem water use efficiency (WUE) from 10 years of eddy-covariance measurements (2004–2013) over an oak-dominated temperate forest in Ohio, USA. …


Journal: Agricultural And Forest Meteorology, Volume 218-219: 209-217 (2016), ISBN . DOI: 10.1016/j.agrformet.2015.12.059 Sites: US-Oho