B11A-0334. Could Rain-induced Ecosystem Respiration Pulses be Enhanced by Legacies of Antecedent Photodegradation in Semi-arid Environments?. S. Ma; D. D. Baldocchi; M. Detto; C. J. Curiel-Yuste
B11A-0337. Does summertime photodegradation prime plant litter for microbial respiration upon the fall rain pulse in a California oak savanna?. J. Hatala; R. Vargas; S. Ma; H. Kobayashi; D. D. Baldocchi
B11D-0392. CO 2 Losses from Terrestrial Organic Matter through Photodegradation. S. Rutledge; D. I. Campbell; D. D. Baldocchi; L. A. Schipper
B11D-0407. MODIS-based global terrestrial estimates of gross primary productivity and evapotranspiration . Y. Ryu; D. D. Baldocchi; H. Kobayashi; J. Li; C. van Ingen; D. Agarwal; K. Jackson; M. Humphrey
B11D-0383. On the Temporal Correlation Between Photosynthesis and Soil Respiration: Reconciling Lags and Observations. R. Vargas; D. D. Baldocchi; M. Bahn; P. J. Hanson; K. Hosman; L. Kulmala; J. Pumpanen; B. Yang
B13A-0452. Eddy Covariance Measured Methane and Carbon Dioxide Fluxes for a Restored Wetland, Sacramento – San Joaquin Delta, California, USA. F. Anderson; M. Detto; J. G. Verfaillie; J. Hatala; D. D. Baldocchi; B. A. Bergamaschi; R. Fujii
B22E-04. Inter-annual Variability of Evapotranspiration in a Semi-arid Oak-savanna Ecosystem: Measured and Modeled Buffering to Precipitation Changes. N. Raz-Yaseef; O. Sonnentag; H. Kobayashi; D. D. Baldocchi
B41C-0318. Comparing Annual Evapotranspiration Estimates at the Watershed Scale Using Geospatial Satellite and Rainfall-Runoff Data. T. C. Moran; Y. Ryu; D. Agarwal; D. D. Baldocchi; J. R. Hunt; C. van Ingen
B24B-01. Extracting Information on Rain-Induced Pulses of Ecosystem Respiration across Scales Spanning the Plot, Canopy and Planetary Boundary Layer (Invited). D. D. Baldocchi; S. Ma; J. Hatala; B. Giolio
B43E-05. Global carbon-water cycles patterns inferred from FLUXNET observations – useful for model evaluation? (Invited). M. Reichstein; M. Jung; C. Beer; D. D. Baldocchi; E. Tomelleri; D. Papale
B44C-08. Quantifying radaition and energy balances at a heterogeneous oak savanna ecosystem in California: a three dimensional modeling appraoch. H. Kobayashi; D. D. Baldocchi; Y. Ryu; Q. Chen; S. Ma; J. L. Osuna; S. Ustin
GC24B-01. Independent support for leaf homeothermy during carbon uptake and the implications for the interpretation of tree-ring oxygen isotopes.. B. R. Helliker; D. D. Baldocchi; A. R. Desai; M. L. Goulden; K. J. Davis; S. C. Wofsy; J. W. Munger
H33H-01. Groundwater dependent ecohydrology in a semi-arid oak savanna (Invited). G. R. Miller; Y. Rubin; D. D. Baldocchi; X. Chen; S. Ma
The Biomet Group met for a class reunion lunch at the Indian Restraurant on Shattuck. It was a great time to get together, visit, laugh and have some great food.
Ryu Y, Baldocchi DD, Verfaillie J, Ma S, Falk M, Ruiz-Mercado I, Hehn T, Sonnentag O Testing the performance of a novel spectral reflectance sensor, built with light emitting diodes (LEDs), to monitor ecosystem metabolism, structure and function. Agricultural and Forest Meteorology 150, 1597-1606.
Baldocchi, D. ; Matteo Detto; Oliver Sonnentag, Joe Verfaillie; Yit Teh, Whendee Silver, Maggi Kelly. The Trials and Tribulations of Measuring Methane Fluxes and Concentrations over a Peatland Pasture in the Sacramento-San Joaquin River Delta of California. Agricultural and Forest Meteorology. Submitted.
Ryu,Youngryel; Dennis Baldocchi; T A Black; Matteo Detto; Beverly E Law; Ray Leuning; Akira Miyata; Markus Reichstein; Rodrigo Vargas; Christof Ammann; Jason Beringer; Lawrence B Flanagan; Lianhong Gu; Lindsay Hutley; Joon Kim; Harry McCaughey; Eddy Moors; Serge Rambal; Timo Vesala; Andrew D Richardson. On the temporal upscaling of evapotranspiration from instantaneous remote sensing measurements to 8-day mean daily-sums. Agricultural and Forest Meteorology. submitted
Baldocchi, D.D . Chen, Q., Chen, X., Ma, S., Miller, G., Ryu, Y., Xiao, J., Wenk, R. and Battles, J. 2010. The Dynamics of Energy, Water and Carbon Fluxes in a Blue Oak (Quercus douglasii) Savanna in California, USA, In: Hill, M. J. and N. P. Hanan, Eds. (2010). Ecosystem Function in Savannas: measurement and modeling at landscape to global scales. Boca Raton, CRC Press. Pp 135-151.
Sonnentag, O., M. Detto, B. Runkle, Y. Teh, W. Silver, M. Kelly, and D. D. Baldocchi. Carbon dioxide exchange of a pepperweed (Lepidium latifolium L.) infestation: how do flowering and mowing affect canopy photosynthesis and autotrophic respiration? J. Geophys. Res., doi:10.1029/2010JG001522, in press
Susanna Rutledge and Louis Schipper from Waikato University in New Zealand visited and discussed photodegradataion. They also gave a semiar to the dept.
Dean Anderson of USGS and his students visited the Biomet lab after AGU and inspected the new CH4 sensor.
ddb gave a presentation on 'Evaporation in Vineyards' to the Napa Valley 2010 Vintage Report workshop in St. Helena, organized by Fruition Sciences.
The SF Giants won the World Series of Baseball.
Climate Change Mitigation and Adaptation in Rice Production in California's San Joaquin - Sacramento Delta a joint effort with UC Davis will be funded by USDA National Institute for Food and Agriculture.
Xiao, J., Q. Zhuang, B.E. Law, D.D. Baldocchi, J. Chen, A.D. Richardson, J.M. Melillo, K.J. Davis, D.Y. Hollinger, S. Wharton, R. Oren, A. Noormets, M.L. Fischer, S.B. Verma, D.R. Cook, G. Sun, S. McNulty, S.C. Wofsy, P.V. Bolstad, S.P. Burns, P.S. Curtis, B.G. Drake, M. Falk, D.R. Foster, L. Gu, J.L. Hadley, G.G. Katul, M. Litvak, S. Ma, T.A. Martin, R. Matamala, T.P. Meyers, R.K. Monson, J.W. Munger, W.C. Oechel, U.K.T. Paw, H.P. Schmid, R.L. Scott, G. Starr, A.E. Suyker and M.S. Torn 2011. Assessing net ecosystem carbon exchange of U.S. terrestrial ecosystems by integrating eddy covariance flux measurements and satellite observations. Agricultural and Forest Meteorology. 151:60-69.
Sonnentag, O, Detto M, Runkle BRK, Teh YA, Silver WL, Kelly M, Baldocchi DD. 2010. Carbon dioxide exchange of a pepperweed (Lepidium latifolium L.) infestation: how do flowering and mowing affect canopy photosynthesis and autotrophic respiration?. Journal of Geophysical Research, Biogeosciences. Submitted.
Detto, M., Baldocchi, D.D., Anderson, F., Verfaillie, J., Xu, L. 2010. Comparing laser-based open- and closed-path gas analyzers to measure methane fluxes using the eddy covariance method. Agricultural and Forest Meteorology . submitted
Vargas, R., D. D. Baldocchi, M. Bahn, P.l J. Hanson, K. P. Hosma, L. Kulmala, J. Pumpanen, B. Yang. On the temporal correlation between photosynthesis and soil respiration: reconciling lags and observations. New Phytologist. submitted
Kobayashi, H., Baldocchi, D., Ryu, Y. , Chen Q, Ma, S. Osuna, J, Ustin, S. Modeling Energy and Carbon Fluxes in a Heterogeneous Oak Woodland: A Three-Dimensional Approach. Agricultural and Forest Meteorology. submitted
Hideki Kobayashi returns to Japan after a productive 2 year postdoc from the Japan Society to Promote Science on modeling mass and energy exchange of the heterogeneous oak savanna canopy.
D. Baldocchi gave a talk on Scaling Information on ‘Biosphere Breathing’ from Chloroplast to the Globe at the 2010 Microsoft eScience Workshop in Berkeley, co-authored with Youngryel Ryu, Hideki Kobayashi and Catharine van Ingen. A story on teh work was reported by Microsoft
D.Baldocchi gave talk on Lessons Learned about Ecosystem Evaporation from Long-term, Global Flux Networks at the 2010 LATSIS Symposium on Ecohydrology in Lausanne, Switzerland.
RUTLEDGE, S., D.I. CAMPBELL, D. BALDOCCHI, and L.A. SCHIPPER, Photodegradation leads to increased carbon dioxide losses from terrestrial organic matter, Global Change Biology, 16 (11), 3065-3074, 2010.
Ma, S., D.D. Baldocchi, S. Mambelli, and T.E. Dawson, Are temporal variations of leaf traits responsible for seasonal and inter-annual variability in ecosystem CO2 exchange?, Functional Ecology, no, 2010. DOI: 10.1111/j.1365-2435.2010.01779.x. Published on line
Xiao, J., Q. Zhuang, B.E. Law, D.D. Baldocchi, J. Chen, A.D. Richardson, J.M. Melillo, K.J. Davis, D.Y. Hollinger, S. Wharton, R. Oren, A. Noormets, M.L. Fischer, S.B. Verma, D.R. Cook, G. Sun, S. McNulty, S.C. Wofsy, P.V. Bolstad, S.P. Burns, P.S. Curtis, B.G. Drake, M. Falk, D.R. Foster, L. Gu, J.L. Hadley, G.G. Katul, M. Litvak, S. Ma, T.A. Martin, R. Matamala, T.P. Meyers, R.K. Monson, J.W. Munger, W.C. Oechel, U.K.T. Paw, H.P. Schmid, R.L. Scott, G. Starr, A.E. Suyker, and M.S. Torn, Assessing net ecosystem carbon exchange of U.S. terrestrial ecosystems by integrating eddy covariance flux measurements and satellite observations, Agricultural and Forest Meteorology, published on lilne.
M. Humphry, WY Cheah, Jie Li, Y Ryu, D. Agarwal, K. Jackson, C. van IngenFault Tolerance and Scaling in e-Science Cloud Applications: Observations from the Continuing Development of MODISAzure. Conf. Proceedings of IEEE e Science 2010 Conference.
We started a new field study over a newly restored wetland on Sherman Island. It is across Mayberry Slough from our current drained peatland site. The new site is off the grid and with the acquistion of a new open-path methane sensor we will be able to measure the suite of greenhouse gas fluxes with a system powered by solar panels. This is a unique opportunity to study the transition of degraded peatland back to a natural wetland, as well as participate in work that is helping to reverse subsidence of soils on the Delta.
Laurie Koteen joined the Biomet Lab as the new Fluxnet Postdoc. Laurie received her PhD from UC Berkeley in 2009.
Prof John Norman from the University of Wisconsin visited and gave the BASC seminar on Mapping Surface Fluxes and Drought From Local to Continental Scales Using Thermal Remote Sensing.
Hideki Kobayashi, Three dimensional modeling of the radiative transfer and energy balance in a heterogeneous oak woodlandBerkeley Atmospheric Science Center Seminar.
D. Baldocchi. Trials and Tribulations on measuring greenhouse gas fluxes over a peatland pasture and rice paddy in the Sacramento-San Joaquin Delta. Bay Delta Science Conference. Sacramento.
Richardson, A.D., T.A. Black, P. Ciais, N. Delbart, M.A. Friedl, N. Gobron, D.Y. Hollinger, W.L. Kutsch, B. Longdoz, S. Luyssaert, M. Migliavacca, L. Montagnani, J.W. Munger, E. Moors, S. Piao, C. Rebmann, M. Reichstein, N. Saigusa, E. Tomelleri, R. Vargas, and A. Varlagin, Influence of spring and autumn phenological transitions on forest ecosystem productivity, Philosophical Transactions of the Royal Society B-Biological Sciences, 365 (1555), 3227-3246.
Ryu, Y., D.D. Baldocchi, J. Verfaillie, S. Ma, M. Falk, I. Ruiz-Mercado, T. Hehn, and O. Sonnentag, Testing the performance of a novel spectral reflectance sensor, built with light emitting diodes (LEDs), to monitor ecosystem metabolism, structure and function, Agricultural and Forest Meteorology, doi: 10.1016/j.agrformet.2010.08.009. published on line.
Matteo Detto ended his 3 year tenure in the biomet lab, as the Delta peatland pasture study draws to an end. Matteo has accepted a postdoc at the Smithsonian Institute in Panama.
Vargas, R.*, Dennis Baldocchi, Michael Allen, Michael Bahn, T. Black, Scott Collins, Jorge Curiel Yuste*, Takashi Hirano, Rachhpal Jassal, Jukka Pumpanen, and Jianwu Tang*. 2010. Looking deeper into the soil: biophysical controls and seasonal lags of soil CO 2 production and efflux across multiple vegetation types. Ecological Applications. 20: 1569-1582.
Bahn, M., M. Reichstein, E.A. Davidson, J. Grunzweig, M. Jung, M.S. Carbone, D. Epron, L. Misson, Y. Nouvellon, O. Roupsard, K. Savage, S.E. Trumbore, C. Gimeno, J.C. Yuste, J. Tang, R. Vargas, and I.A. Janssens, Soil respiration at mean annual temperature predicts annual total across vegetation types and biomes, Biogeosciences, 7 (7), 2147-2157.
Baldocchi, D.D., Ma, S.*, Rambal, S., Misson, L. Ourcival, J-M, Limosin, J-M, Perieria, J.S., Papale, D. On the Differential Advantages of Evergreenness and Deciduousness in Mediterranean Oak Woodlands. Ecological Applications. 20: 1583-1597.
Ma, Siyan; Baldocchi, Dennis; Mambelli, Stefania; Dawson, Todd. Are temporal variations of leaf traits responsible for seasonal and inter-annual variability in ecosystem CO2 exchange? Functional Ecology. Accepted!
Youngryel Ryu gave a lab seminar on his use of Microsoft's Azure Cloud computing system to produce a new generation of MODIS based flux maps at the state, Nation and global scales. His maps are currently for global primary productivity and evaporation.
Rodrigo Vargas is moving to a new position as a research scientist at the National Institute of Ecology in Ensenada, Mexico.
Youngryel Ryu is moving to Harvard University to become a postdoc in the lab of Andrew Richardson.
Beniamino Gioli finished his visit after working on the interpretation of boundary layer dynamics and CO2 concentrations after rain induced pulses in respiration.
ddb was part of a team that reviewed the University of Michigan Biological Station, Pellston, MI.
He also lectured at the University of Colorado's Short Course on Flux, held at the Niwot Ridge Field Station.
We heard from DOE that our project ' Using a Regional Cluster of AmeriFlux Sites in Central California to Advance our Knowledge on Decadal-Scale Ecosystem-Atmosphere Carbon Dioxide Exchange: Addressing the Roles of: a) Inter-annual Variability in Rainfall and Its Legacy-Effects, b) Photodegradation and its Priming of Rain-Induced Pulses in Soil/Litter Respiration, c) Photosynthetic Priming on Soil Respiration, and d) Access to Groundwater' will be funded for the 3 year period, 2010-2013.
Beer, Ch., Reichstein, M., Tomelleri, E. Ciais, P., Jung, M., Carvalhais, N. Rodenbeck, C., Arain, A., Baldocchi, D., Bonan, G.B., Bondeau, A., Cescatti, A., Lasslop, G., Lindroth, A., Lomas, M. Luyssaert, S., Margolis, H., Oleson, K.W., Roupsard, O., Veenendaal, E., Viovy, N., Williams,C., Woodward, F.I., Dario Papale, D. Terrestrial Gross Carbon Dioxide Uptake: Global Distribution and Co-variation with Climate. Science.science.1184984 .
Mahecha MD, Reichstein M, Carvalhais N, Lasslop G, Lange H, Seneviratne SI, Vargas R, Ammann C, Arain MA, Cescatti A, Janssens IA, Migliavacca M, Montagnani L, Richardson AD (2010) Global Convergence in the Temperature Sensitivity of Respiration at Ecosystem Level 10.1126/science.1189587. Science:science.1189587
Oliver Sonnentag has moved to the Harvard University lab of Andrew Richardson.
Rodrigo Vargas attended a science meeting in San Diego and Ensenada, Mexico on Carbon and Energy
ddb gave two talks at College of Oceanic and Atmospheric Sciences, Oregon State University, as part of their COAS Frontiers Seminar Series. One was on the Trials and Tribulations of Measuring Methane Fluxes over a Drained Peatland. The other was on the Ecology and Physics of Carbon Offsets.
Miller, G.R., Chen, X., Rubin, Y, Ma, S. Baldocchi, D.D. 2010., Groundwater uptake by woody vegetation in a semi-arid oak savanna. Water Resources Research. doi:10.1029/2009WR008902, published on-line
Yaseef NR, Yakir D, Rotenberg E, Schiller G, Cohen S (2010) Ecohydrology of a semi-arid forest: partitioning among water balance components and its implications for predicted precipitation changes. Ecohydrology 3:143-154
Anderson RG, Canadell JG, Randerson JT, Jackson RB, Hungate BA, Baldocchi DD, Ban-Weiss GA, Bonan GB, Caldeira K, Cao L, Diffenbaugh NS, Gurney KR, Kueppers LM, Law BE, Luyssaert S, O'Halloran TL (2010) Biophysical considerations in forestry for climate protection. Frontiers in Ecology and the Environment . published on line.
Vargas R, Carbone M, Reichstein M, Baldocchi D Frontiers and challenges in soil respiration research: from measurements to model-data integration. Biogeochemistry. published online.
Detto, M.*, Baldocchi, D.D., Katul, G.G. 2010. Scaling properties of biologically active scalar concentration fluctuations in the surface boundary layer over a managed peatland Boundary Layer Meteorology. Published on line.
Beniamino Gioli, Instituto di Biometeorologia/CNR, Firenze, Italy, is in residence in the Biometeorology lab for a 7 week period from June through August. Dr. Gioli will conduct analysis of PBL links to step changes in atmospheric CO2 following summer rain events that cause pulses in ecosystem respiration. Using a PBL model we intend to evaluate the regional scale of these pulses in respiration.
Hideki Kobayashi gave a presentation at UC Merced on Modeling Three Dimensional Radiative Transfer through a savanna ecosystem
ddb lectured on water exchange at a short course on Adaptive Management of Mediterranean Forest Ecosystems to Climate Change. It was held at CIHEAM-IAMZ in Zaragosa Spain. Afterward he met Jorge Curiel-Yuste in Madrid and celebrated the victory of Athletico Madrid for the European Cup.
Youngryel Ryu finished his PhD and graduated. He will work this summer for Microsoft and will take a postdoc in the fall at Harvard with Andrew Richardson
Youngryel Ryu. ESPM, May, 2010. Near-surface remote sensing of canopy architecture and land-atmosphere interactions in an oak savanna ecosystem, Ph.D dissertation.
Liukang Xu, former Biomet lab postdoc, and Chris Mantzios from LICOR visited the Twitchell Island rice study site. They have loaned us an open path LI 7700 methane sensor. We are conducting an inter comparison between the open path LICOR and the closed path LGR methane sensors.
Vargas, R., Detto, M., Baldocchi, D., Allen, M. 2010. Multiscale analysis of temporal variability of soil CO 2 production as influenced by weather and vegetation. Global Change Biology.16: 1589-1605
Curiel Yuste J, Ma S, Baldocchi D (2010) Plant-soil interactions and acclimation to temperature of microbial-mediated soil respiration may affect predictions of soil CO2 efflux. Biogeochemistry 98:127-138
Rhew RC, Chen C, Teh YA, Baldocchi D (2010) Gross fluxes of methyl chloride and methyl bromide in a California oak-savanna woodland. Atmospheric Environment 44:2054-2061
Jaclyn Hatala was awarded an NSF graduate fellowship for her proposal, 'Photodegradation as a seasonal mechanism for decomposition in Mediterranean ecosystems.
John Norman and Jon Welles for Licor visited the Biomet Lab and collaborated on testing the new LAI 2200 sensor for measuring leaf area index in clumped canopies. We tested it at the Tonzi Ranch and under the Redwoods.
ddb attended the Savanna and Remote Sensing Workshop at Colorado State University, Ft Collins.
ddb gave a presentation on Micrometeorological methods to measure greenhouse gas fluxes and associated challenges at the local to global scales, National Insitute of Standards and Technology, Gaithersburg, MD, Mar 24
Raz-Yaseef, N., E. Rotenberg, and D. Yakir, Effects of spatial variations in soil evaporation caused by tree shading on water flux partitioning in a semi-arid pine forest, Agricultural and Forest Meteorology, 150 (3), 454-462, 2010.
Ryu, Y., T. Nilson, H. Kobayashi, O. Sonnentag, B.E. Law, and D.D. Baldocchi, On the correct estimation of effective leaf area index: Does it reveal information on clumping effects?, Agricultural and Forest Meteorology, 150 (3), 463-472, 2010.
Hatala, J.A., R.L. Crabtree, K.Q. Halligan, and P.R. Moorcroft, Landscape-scale patterns of forest pest and pathogen damage in the Greater Yellowstone Ecosystem, Remote Sensing of Environment, 114 (2), 375-384.
D. Baldocchi gave 7th annual Gaylon Campbell Lecture in Environmental Soil and Water Science at Washington State University, Pullman, Wa, Why Ecologists need Soil Physics and Vice Versa .
ddb gave the Environmental Systems Graduate Group seminar on The Physics and Ecology of Carbon Offsets at UC Merced
Siyan Ma gave a lecture to the Forest Science Seminar on Prescribed burning and mechanical thinning effects on belowground conditions and soil respiration in a mixed-conifer forest, California
Hollinger, D.Y., S.V. Ollinger, A.D. Richardson, T.P. Meyers, D.B. Dail, M.E. Martin, N.A. Scott, T.J. Arkebauer, D.D. Baldocchi, K.L. Clark, P.S. Curtis, K.J. Davis, A.R. Desai, D. Dragoni, M.L. Goulden, L. Gu, G.G. Katul, S.G. Pallardy, K.T. Paw, H.P. Schmid, P.C. Stoy, A.E. Suyker, and S.B. Verma, Albedo estimates for land surface models and support for a new paradigm based on foliage nitrogen concentration, Global Change Biology, 16 (2), 696-710.
Ryu, Y., O. Sonnentag, T. Nilson, R. Vargas, H. Kobayashi, R. Wenk, and D.D. Baldocchi, How to quantify tree leaf area index in an open savanna ecosystem: A multi-instrument and multi-model approach, Agricultural and Forest Meteorology, 150 (1), 63-76.
Vargas, R., D.D. Baldocchi, J.I. Querejeta, P.S. Curtis, N.J. Hasselquist, I.A. Janssens, M.F. Allen, and L. Montagnani, Ecosystem CO2 fluxes of arbuscular and ectomycorrhizal dominated vegetation types are differentially influenced by precipitation and temperature, New Phytologist, 185 (1), 226-236.
ddb attended the NCEAS meeting on Forests and Climate Policy Working Group in Santa Barbara
ddb was part of a team that reviewed the Max Planck Institute for Biogeochemistry in Jena, Germany
Baldocchi, DD., Ryu, Y. 2010. A Synthesis of Forest Evaporation Fluxes--from Days to Years-- as Measured with Eddy Covariance. In: Forest Hydrology and Biogeochemistry, Editors, Del Lavia and Darryl Carlyle-Moses, Springer. Submitted.
Ryu, S.R., Concilio, A., Chen, J.Q., North, M. and Ma, S.Y., 2009. Prescribed burning and mechanical thinning effects on belowground conditions and soil respiration in a mixed-conifer forest, California. Forest Ecology and Management, 257(4): 1324-1332.
Running, S.W., Nemani, R.R., Townshend, J.R.G., Baldocchi, D.D. 2009. Next-Generation Terrestrial Carbon Monitoring. In: Carbon Sequestration and Its Role in the Global Carbon Cycle Brian J. McPherson and Eric T. Sundquist, Editors. Geophysical Monograph Series, Volume 183. American Geophysical Union, Washington, D.C.
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.