We are collaborating with LGR for 2 weeks measuring fluxes of 13C, C18O and C17O over alfalfa with their new tunable diode laser spectrometer. Exciting new data to help us better partition net CO2 fluxes into photosynthesis and respiration
Ben Ruddell from Arizona State is visiting to discuss Information theory and its application to Fluxnet data and our tower flux data.
Xiangming Xiao from Oklahoma visited the rice and wetland field sites with Sara Knox. Xiao and his team are interested in modeling rice CO2 and methane fluxes with remote sensing and using our data to validate and parameterize our their models
Annual Meeting of Society of Wetland Scientists, Providence, RI
Agricultural Peatland Restoration: Effects of Land-Use Change on Greenhouse Gas (CO2 and CH4) Fluxes in the Sacramento-San Joaquin Delta Sara Knox, University of California, Berkeley
Improving Process-Based Modeling of CO2 and CH4 Exchange from Managed Wetlands in the Sacramento-San Joaquin River Delta. Patricia Oikawa, University of California - Berkeley
(original title, Almonds: damned if you do, damned if you dont)
Miguel Jimenez joined the Biomet Lab this summer as an undergraduate research supported by the Biological Scholars Program. Miguel will work on evaluating soil respiration of alfalfa with flux gradient and chamber methods.
Ana Andreu participated in the GRAPEX experiment in Lodi, hosted at the Gallo vineyard by the USDA group of Bill Kustas. This team was looking at ways to use drones and satellite remote sensing to estimate water use of the vineyard.
Anderson, Frank, Brian Bergamaschi, Lisamarie Windham-Myers, Cove Sturtevant, Matteo Detto, Sara Knox,Jaclyn Matthes,Dennis Baldocchi,Joseph Verfaillie,Richard Louis Snyder,Lauren Hastings,Roger Fujii Variation of energy and carbon fluxes from a restored temperate freshwater wetland and implications for carbon market verification protocols. Journal of Geophysical Research, Biogeosciences, submitted
Sebastian Wolf, former postdoc, now at ETH Zurich, visited the Biomet Lab for 2 weeks
Sara Knox spoke on the analysis of six years of rice methane fluxes at the monthly USDA-AFRI-UC Davis team meeting.
ddb gave an invited talk on 'What is Annual Ecosystem Photosynthesis? An Exploration of Data and Models from Ecosystem to Globe' at the 4th Carbon Assimilation Workshop at the University of Toronto.
A proposal with the Dept of Water Resources and the Silver Lab was funded by the California Dept Fish and Wildlife to restore wetlands that sequester greenhouse gases and provide other ecological benefits. The work will be done on Sherman Island and extend our network of sites across the Delta on Twitchell Island
Sturtevant, C., Ruddell, B., Knox, S., Verfaillie, J, Hatala-Mathes, J., Oikawa, P. Baldocchi, D. Identifying the complex processes driving greenhouse gas exchange at multiple time scales in restored wetlands. Journal of Geophysical Research, Biogeosciences, submitted.
Trevor Keenan visited the Biomet lab, while on campus and in Berkeley giving a lecture at LBL.
Patty Oikawa lectured on Transitioning from Farming Corn to Farming Carbon: The Role of Agriculture in Water Resources Management and Climate Change Adaptation and Mitigation at Stanford, April 1, 2015
ddb lectured on 'Physics Wins, Biology is How it's Done: An Exploration of Ecosystem-Atmosphere Interactions' at University of Hawaii, Geography Distinguished Lecture Series. April 2, 2015 and at the Weizmann Institute in Israel on April 19. 2015.
ddb attend the DOE Terrestrial Ecosystem Science PI meeting in Potomac, MD and presented a poster on the mesonetwork of flux sites the biomet lab is operating across California.
Gordon Bonan, from NCAR, visited while on campus giving his BASC lecture on Connecting mathematical ecosystems, real-world ecosystems, and climate science
Joana Joiner from NASA visited the biomet lab, while on campus giving her BASC lecture on detecting chlorophyll flourescence from space.
ddb visited the Universities of Stockholm and Uppsala, where he gave presentations on greenhouse gas flux studies in the Delta. The main purpose was to serve as the opponent of the PhD defense of Eva Podgrajsek, Lake fluxes of carbon dioxide and methane. He also visited the new lake flux site on Lake Erken. The Uppsala group of Erik Sahlee and Anna Rutgersson are actively measuring eddy fluxes over lakes in Sweden and the Baltic sea. The Stockholm group of Patrick Crill are doing novel work in the Arctic measuring methane fluxes of fens, bogs and lakes and are looking at the sources of production with stable isotopes and linking biogeochemical function with genomics, protenomics and transcriptonomics. They are also making novel measurements of bubble fluxes. A Lot was learned on the trip.
Joe Verfaillie, Cove Sturtevant, Siyan Ma, Patty Oikawa, Sara Knox, Housen Chu and Ana Andreu participated in the Ameriflux Data workshop at Lawrence Berkeley National Lab.
Baldocchi, D.D. Sturtevant, C. Does Day and Night Sampling Reduce Spurious Correlation between Canopy Photosynthesis and Ecosystem Respiration?&Agricultural and Forest Meteorology. accepted for publication
Petrescu, A. M. R., A. Lohila, J.-P. Tuovinen, D. D. Baldocchi, A. R. Desai, N. T. Roulet, T. Vesala, A. J. Dolman, W. C. Oechel, B. Marcolla, T. Friborg, J. Rinne, J. H. Matthes, L. Merbold, A. Meijide, G. Kiely, M. Sottocornola, T. Sachs, D. Zona, A. Varlagin, D. Y. F. Lai, E. Veenendaal, F.-J. W. Parmentier, U. Skiba, M. Lund, A. Hensen, J. van Huissteden, L. B. Flanagan, N. J. Shurpali, T. Grünwald, E. R. Humphreys, M. Jackowicz-Korczyński, M. A. Aurela, T. Laurila, C. Grüning, C. A. R. Corradi, A. P. Schrier-Uijl, T. R. Christensen, M. P. Tamstorf, M. Mastepanov, P. J. Martikainen, S. B. Verma, C. Bernhofer, and A. Cescatti. 2015. The uncertain climate footprint of wetlands under human pressure. Proceedings of the National Academy of Sciences. doi 10.1073/pnas.1416267112. published online, early view
Jose Fuentes of Penn State visited the Biometlab while on campus giving a BASC symposium lecture
ddb gave a presentation on eddy covariance, a method for measuring ecosystem-atmosphere fluxes of trace gases at 2015 Aquatic Sciences meeting of the Association of the Sciences of Limnology and Oceanography in Granada, Spain.
Presentations on the Fluxnet project were give at the Vrije University, near Amsterdam. While in Wageningen, seminars were given on the greenhouse gas studies in the Delta and on Fluxnet.
Greenness indices from digital cameras predict the timing and seasonal dynamics of canopy-scale photosynthesis Michael Toomey, Mark A. Friedl, Steve Frolking, Koen Hufkens, Stephen Klosterman, Oliver Sonnentag, Dennis D. Baldocchi, Carl J. Bernacchi, Sebastien C. Biraud, Gil Bohrer, Edward Brzostek, Sean P. Burns, Carole Coursolle, David Y. Hollinger, Hank A. Margolis, Harry McCaughey, Russell K. Monson, J. William Munger, Stephen Pallardy, Richard P. Phillips, Margaret S. Torn, Sonia Wharton, Marcelo Zeri, and Andrew D. Richardson. Ecological Applications201525:1, 99-115
Housen Chu is joining the Biomet Lab as a postdoc working on the Fluxnet project. He just got his PhD from the University of Toledo.
Ana Andreu Mendez is joining the Biomet Lab as a visiting scientist from Cordoba, Spain. She just got her PhD from the University of Cordoba (Spain).
This material is based upon work supported by the National Science Foundation and US Department of Energy. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the supporters.