Publications

Publications Found: 804
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

Influence of regional nighttime atmospheric regimes on canopy turbulence and gradients at a closed and open forest in mountain-valley terrain
Wharton, S., Ma, S., Baldocchi, D.D., Falk, M., Newman, J.F., Osuna, J.L, Bible, K.

Stable stratification of the nocturnal lower boundary layer inhibits convective turbulence, such that turbulent vertical transfer of ecosystem carbon dioxide (CO2), water vapor (H2O) and energy is driven by mechanically forced turbulence, either from frictional forces near the ground or top of a plant canopy, or from shear generated …


Journal: Agricultural and Forest Meteorology, Volume 237–238: 18-29 (2017). DOI: 10.1016/j.agrformet.2017.01.020 Sites: US-Ton, US-Wrc

Using digital camera and Landsat imagery with eddy covariance data to model gross primary production in restored wetlands
Knox, Sara Helen Dronova, Iryna Sturtevant, Cove Oikawa, Patricia Y. Matthes, Jaclyn Hatala Verfaillie, Joseph Baldocchi, Dennis

Wetlands have the ability to accumulate large amounts of carbon (C), and therefore wetland restoration has been proposed as a means of sequestering atmospheric carbon dioxide (CO2) to help mitigate climate change. There is a growing interest in using the C services of wetlands to help reduce habitat loss and finance restoration projects. …


Journal: Agricultural and Forest Meteorology, Volume 237–238: 233-245 (2017). DOI: http://dx.doi.org/10.1016/j.agrformet.2017.02.020 Sites: US-Myb, US-Tw1