Publications

Publications Found: 1437

Partitioning Net Ecosystem Carbon Exchange And The Carbon Isotopic Disequilibrium In A Subalpine Forest
ZOBITZ, J. M., BURNS, S. P., REICHSTEIN, M., BOWLING, D. R.

We investigate the utility of an improved isotopic method to partition the net ecosystem exchange of CO2 (F) into net photosynthesis (FA) and nonfoliar respiration (FR). Measurements of F and the carbon isotopic content in air at a high‐elevation coniferous forest (the Niwot Ridge AmeriFlux site) were used to partition F into FA …


Journal: Global Change Biology, Volume 14 (8): 1785-1800 (2008). DOI: 10.1111/j.1365-2486.2008.01609.x Sites: US-NR1

Effect Of Soil Water Stress On Soil Respiration And Its Temperature Sensitivity In An 18-Year-Old Temperate Douglas-Fir Stand
Jassal, R. S., Black, T. A., Novak, M. D., Gaumont-Guay, D., Nesic, Z.

We analyzed 17 months (August 2005 to December 2006) of continuous measurements of soil CO2 efflux or soil respiration (RS) in an 18-year-old west-coast temperate Douglas-fir stand that experienced somewhat greater than normal summertime water deficit. For soil water content at the 4 cm depth (θ) …


Journal: Global Change Biology, Volume 14 (6): 1305-1318 (2008). DOI: 10.1111/j.1365-2486.2008.01573.x Sites: CA-Ca1, CA-Ca2, CA-Ca3

Interannual Variability Of Evapotranspiration And Energy Exchange Over An Annual Grassland In California
Ryu, Y, Baldoicchi, D. D., Ma, S., Hehn, T.

We report on the interannual variability of evapotranspiration (E) and energy exchange of an annual grassland in the Mediterranean climate zone of California. They were measured directly with the eddy covariance technique over a 6-year period that spanned between July 2001 and June 2007 and experienced a large range …


Journal: Journal Of Geophysical Research, Volume 113 (D09104): n/a-n/a (2008). DOI: 10.1029/2007jd009263 Sites: US-Var

Subsidence Reversal In A Re-Established Wetland In The Sacramento-San Joaquin Delta, California, USA
Miller, R. L., Fram, M., Fuji, R., Wheeler, G.


Journal: San Francisco Estuary And Watershed Science, Volume 6 (3): n/a-n/a (2008). DOI: 10.15447/sfews.2008v6iss3art1 Sites: US-Tw1

A Novel Approach For Identifying The True Temperature Sensitivity From Soil Respiration Measurements
Gu, L., Hanson, P. J., Mac Post, W., Liu, Q.


Journal: Global Biogeochemical Cycles, Volume 22 (4): n/a-n/a (2008). DOI: 10.1029/2007GB003164 Sites: US-MOz

Ecosystem Respiration And Its Components In An Old-Growth Forest In The Great Lakes Region Of The United States
Tang, J., Bolstad, P. V., Desai, A. R., Martin, J. G., Cook, B. D., Davis, K. J., Carey, E. V.

Ecosystem respiration and its components are sensitive to age, species, stand structure, and environmental conditions, and substantially influence net ecosystem productivity. We measured ecosystem respiration and component respiration including soil, woody debris, stem and leaf respiration in old-growth hardwood-dominated and hemlock-dominated …


Journal: Agricultural And Forest Meteorology, Volume 148 (2): 171-185 (2008). DOI: 10.1016/j.agrformet.2007.08.008 Sites: US-Syv

Estimating Components Of Forest Evapotranspiration: A Footprint Approach For Scaling Sap Flux Measurements
Oishi, A. C., Oren, R., Stoy, P. C.

Forest evapotranspiration (ET) estimates that include scaled sap flux measurements often underestimate eddy covariance (EC)-measured latent heat flux (LE). We investigated potential causes for this bias using 4 years of coupled sap flux and LE measurements from a mature …


Journal: Agricultural And Forest Meteorology, Volume 148 (11): 1719-1732 (2008). DOI: 10.1016/j.agrformet.2008.06.013 Sites: US-Dk3

Water Flux Components And Soil Water-Atmospheric Controls In A Temperate Pine Forest Growing In A Well-Drained Sandy Soil
McLaren, J. D., Arain, M.A., Khomik, M., Peichl, M., Brodeur, J.

The influences of soil water supply and atmospheric demand on transpiration were studied to gain insight into the physical mechanisms limiting forest water use within the broader context of total canopy water loss to the atmosphere. Evaporation from forests (E) can be partitioned in to four main source components: canopy …


Journal: Journal Of Geophysical Research, Volume 113 (G4): n/a-n/a (2008). DOI: 10.1029/2007JG000653 Sites: CA-TP1, CA-TP3, CA-TP4

Modeling Analysis Of Primary Controls On Net Ecosystem Productivity Of Seven Boreal And Temperate Coniferous Forests Across A Continental Transect
Yuan, F., Arain, M. A., Barr, A. G., Black, T. A., Bourque, C. P., Coursolle, C., Margolis, H. A., Mccaughey, J. H., Wofsy, S. C.

Process-based models are effective tools to synthesize and/or extrapolate measured carbon (C) exchanges from individual sites to large scales. In this study, we used a C- and …


Journal: Global Change Biology, Volume 14 (8): 1765-1784 (2008). DOI: 10.1111/j.1365-2486.2008.01612.x Sites: CA-TP1, CA-TP3, CA-TP4

Direct Measurement Of Biosphere-Atmosphere Isotopic Co2exchange Using The Eddy Covariance Technique
Griffis, T.J., Sargent, S.D., Baker, J.M., Lee, X., Tanner, B.D., Greene, J., Swiatek, E., Billmark, K.

Quantifying isotopic CO2 exchange between the biosphere and atmosphere presents a significant measurement challenge, but has the potential to provide important constraints on local, regional, and global carbon cycling. Past approaches have indirectly estimated isotopic CO2 exchange using relaxed eddy accumulation, …


Journal: Journal Of Geophysical Research, Volume 113 (D8): n/a-n/a (2008). DOI: 10.1029/2007JD009297 Sites: US-Ro1