Publications

Publications Found: 806
Annual greenhouse gas budget for a bog ecosystem undergoing restoration by rewetting
Lee, S.-C., Christen, A., Black, T.A., Johnson, M.S., Jassal, R.S., Ketler, R., Nesic, Z., Merkens, M.

Many peatlands have been drained and harvested for peat mining, agriculture, and other purposes, which has turned them from carbon (C) sinks into C emitters. Rewetting of disturbed peatlands facilitates their ecological recovery and may help them revert to carbon dioxide (CO2) sinks. However, rewetting may also cause substantial …


Journal: Biogeosciences, Volume 14 (11): 2799-2814 (2017). DOI: 10.5194/bg-14-2799-2017 Sites: CA-DBB

Evaluation Of Density Corrections To Methane Fluxes Measured By Open-Path Eddy Covariance Over Contrasting Landscapes
Chamberlain, S. D., Verfaillie, J., Eichelmann, E., Hemes, K. S., Baldocchi, D. D.

Corrections accounting for air density fluctuations due to heat and water vapour fluxes must be applied to the measurement of eddy-covariance fluxes when using open-path sensors. Experimental tests and ecosystem observations have demonstrated the important role density corrections play in accurately quantifying carbon dioxide ( CO …


Journal: Boundary-Layer Meteorology, Volume : (2017). DOI: 10.1007/s10546-017-0275-9 Sites: US-Myb, US-Snd, US-Tw1, US-Tw3, US-Tw4, US-Twt

Inter-Annual Variability Of Net And Gross Ecosystem Carbon Fluxes: A Review
Baldocchi, D., Chu, H., Reichstein, M.

As the lifetime of regional flux networks approach twenty years, there is a growing number of papers that have published long term records (5 years or more) of net carbon fluxes between ecosystems and the atmosphere. Unanswered questions from this body of work are: 1) how variable are carbon fluxes on a year to year basis?; 2) what …


Journal: Agricultural And Forest Meteorology, Volume : (2017). DOI: 10.1016/j.agrformet.2017.05.015 Sites:

Delta-Flux: An Eddy Covariance Network for a Climate-Smart Lower Mississippi Basin
Benjamin R. K. Runkle, James R. Rigbyb, Michele L. Rebac, Saseendran S. Anapallid, Joydeep Bhattacharjeee, Ken W. Kraussf, Lu Liangg, Martin A. Locke, Kimberly A. Novick, Ruixiu Suid, Kosana Suvočareva and Paul M. White

Networks of remotely monitored research sites are increasingly the tool used to study regional agricultural impacts on carbon and water fluxes. However, key national networks such as the National Ecological Observatory Network and AmeriFlux lack contributions from the Lower Mississippi River Basin (LMRB), a highly productive agricultural …


Journal: Agricultural & Environmental Letters, Volume 2 (1): 170003 - 170003 (2017). DOI: 10.2134/ael2017.01.0003 Sites: US-BdA, US-BdC, US-Cst, US-Goo, US-HRA, US-HRC, US-ULM

Photosynthetic Responses To Temperature Across Leaf–Canopy–Ecosystem Scales: A 15-Year Study In A Californian Oak-Grass Savanna
Ma, S., Osuna, J. L., Verfaillie, J., Baldocchi, D. D.

Ecosystem CO2 fluxes measured with eddy-covariance techniques provide a new opportunity to retest functional responses of photosynthesis to abiotic factors at the ecosystem level, but examining the effects of one factor (e.g., temperature) on photosynthesis remains a challenge as other factors may confound under circumstances of …


Journal: Photosynthesis Research, Volume 132 (3): 277-291 (2017). DOI: 10.1007/s11120-017-0388-5 Sites: US-Ton

Contrasting strategies of hydraulic control in two co-dominant temperate tree species
Matheny AM, Fiorella RP, Bohrer G, Poulsen CJ, Morin TH, Wunderlich A, Vogel CS, Curtis PS.

Biophysical controls on plant water status exist at the leaf, stem, and root levels. Therefore, we
pose that hydraulic strategy is a combination of traits governing water use at each of these three
levels. We studied sap flux, stem water storage, stomatal conductance, photosynthesis, and
growth of red oaks (Quercus rubra) and …


Journal: Ecohydrology, Volume 10 (3): 1815-1815 (2017). DOI: 10.1002/eco.1815/abstract Sites: US-UMB

The Whole-Soil Carbon Flux In Response To Warming
Hicks Pries, C. E.; Castanha, C.; Porras, R. C.; Torn, M. S.

Soils contain about twice as much carbon as Earth’s atmosphere, so their response to warming is crucial to understanding carbon fluxes in a changing climate. Past studies have heated soil to a depth of 5 to 20 cm to examine such fluxes. Hicks Pries et al. heated the ground to a depth of 100 cm. Extending measurements to …


Journal: Science, Volume 355 (6332): 1420-1423 (2017). DOI: 10.1126/science.aal1319 Sites: US-Blo

Evaluation of a hierarchy of models reveals importance of substrate limitation for predicting carbon dioxide and methane exchange in restored wetlands
Oikawa, P. Y.; Jenerette, G. D.; Knox, S. H.; Sturtevant, C.; Verfaillie, J.; Dronova, I.; Poindexter, C. M. ; Eichelmann, E.; Baldocchi, D. D.

Wetlands and flooded peatlands can sequester large amounts of carbon (C) and have high greenhouse gas mitigation potential. There is growing interest in financing wetland restoration using C markets; however, this requires careful accounting of both CO2 and CH4 exchange at the ecosystem scale. Here we present a new model, the PEPRMT …


Journal: Journal of Geophysical Research: Biogeosciences, Volume 122 (1): 145-167 (2017). DOI: 10.1002/2016JG003438 Sites: US-Myb, US-Tw1, US-Tw4

Representing Winter Wheat In The Community Land Model (Version 4.5)
Lu, Y., Williams, I. N., Bagley, J. E., Torn, M. S., Kueppers, L. M.

Winter wheat is a staple crop for global food security, and is the dominant vegetation cover for a significant fraction of Earth’s croplands. As such, it plays an important role in carbon cycling and land–atmosphere interactions in these key regions. Accurate simulation of winter wheat growth is not only crucial for future yield …


Journal: Geoscientific Model Development, Volume 10 (5): 1873-1888 (2017). DOI: 10.5194/gmd-10-1873-2017 Sites: US-ARM, US-CRT, US-Pon

Revisiting the partitioning of net ecosystem exchange of CO2 into photosynthesis and respiration with simultaneous flux measurements of 13CO2 and CO2, soil respiration and a biophysical model, CANVEG.
Oikawa, P. Y., C. Sturtevant, S. H. Knox, J. Verfaillie, Y. W. Huang, and D. D. Baldocchi.

The partitioning of net ecosystem exchange of CO(NEE) into photosynthesis and respiration can be challenging and is often associated with assumptions that yield unknown amounts of uncertainty, thereby hindering model development. This occurs because we are inferring two pieces of information from one equation and measurement, …


Journal: Agricultural and Forest Meteorology, Volume 234: 149-163 (2017). DOI: Sites: US-Tw3