Publication Search
Bruno, R. D., da Rocha, H. R., de Freitas, H. C., Goulden, M. L., Miller, S. D.
We used frequency-domain reflectometry to make continuous, high-resolution measurements for 22 months of the soil moisture to a depth of 10 m in an Amazonian rain forest. We then used these data to determine how soil moisture varies on diel, seasonal and multi-year timescales, and to better understand the quantitative and mechanistic …
Journal: Hydrological Processes, Volume 20 (12): 2477-2489 (2006). DOI: 10.1002/hyp.6211 Sites: BR-Sa3
Davidson, E. A., Savage, K. E., Trumbore, S. E., Borken, W.
The major driving factors of soil CO2 production – substrate supply, temperature, and water content – vary vertically within the soil profile, with the greatest …
Journal: Global Change Biology, Volume 12 (6): 944-956 (2006). DOI: 10.1111/j.1365-2486.2005.01142.x Sites: US-LPH
Schade, G. W., Goldstein, A. H.
Acetone and methanol have been measured hourly at a rural mountain site in California for a full year, providing a unique data set for analyzing the factors controlling their seasonal cycles. Their mixing ratios showed clear maxima in summer and late spring respectively, and were mostly correlated with atmospheric temperature with …
Journal: Global Biogeochemical Cycles, Volume 20 (1): 1-10 (2006). DOI: 10.1029/2005gb002566 Sites: US-Blo
Engstrom, R., Hope, A., Kwon, H., Harazono, Y., Mano, M., Oechel, W.
Modeling evapotranspiration (ET) in Arctic coastal plain ecosystems is challenging owing to the unique conditions present in this environment, including permafrost, nonvascular vegetation, and a large standing dead vegetation component. In this study the ecosystem process model, BIOME-BGC, was adapted to represent these unique conditions …
Journal: Journal Of Geophysical Research: Biogeosciences, Volume 111 (G02021): n/a-n/a (2006). DOI: 10.1029/2005JG000102 Sites: US-Brw
DeForest, J. L., Noormets, A., McNulty, S. G., Sun, G., Tenney, G., Chen, J.
Soil respiration (SR) represents a major component of forest ecosystem respiration and is influenced seasonally by environmental factors such as temperature, soil moisture, root respiration, and litter fall. Changes in these environmental factors correspond with shifts in plant phenology. In this study, we examined the relationship …
Journal: International Journal Of Biometeorology, Volume 51 (2): 135-144 (2006). DOI: 10.1007/s00484-006-0046-7 Sites: US-Oho
Ponton, S., Flanagan, L. B., Alstad, K. P., Johnson, B. G., Morgenstern, K., Kljun, N., Black, T. A., Barr, A. G.
Comparisons were made among Douglas-fir forest, aspen (broad leaf deciduous) forest and wheatgrass (C3) grassland for ecosystem-level water-use efficiency (WUE). WUE was defined as the ratio of photosynthetic CO2 assimilation rate and evapotranspiration (ET) rate. The ET data measured by eddy covariance were …
Journal: Global Change Biology, Volume 12 (2): 294-310 (2006). DOI: 10.1111/j.1365-2486.2005.01103.x Sites: CA-Ca1, CA-Let, CA-Oas
Richardson, A. D., Hollinger, D. Y., Burba, G. G., Davis, K. J., Flanagan, L. B., Katul, G. G., William Munger, J., Ricciuto, D. M., Stoy, P. C., Suyker, A. E., Verma, S. B., Wofsy, S. C.
Measured surface-atmosphere fluxes of energy (sensible heat, H, and latent heat, LE) and CO2 (FCO2) represent the “true” flux plus or minus potential random and systematic measurement errors. Here, we use data from seven sites in the AmeriFlux network, including five forested sites …
Journal: Agricultural And Forest Meteorology, Volume 136 (1-2): 1-18 (2006). DOI: 10.1016/j.agrformet.2006.01.007 Sites: CA-Let, US-Dk3, US-Ho1, US-Ne1, US-Ne2, US-Ne3, US-PFa
Hibbard, K. A., Law, B. E., Reichstein, M., Sulzman, J.
Over two-thirds of terrestrial carbon is stored belowground and a significant amount of atmospheric CO2 is respired by roots and microbes in soils. For this analysis, soil respiration (Rs) data were assembled from 31 AmeriFlux and CarboEurope sites representing deciduous broadleaf, evergreen needleleaf, grasslands, mixed …
Journal: Biogeochemistry, Volume 73 (1): 29-70 (2005). DOI: 10.1007/s10533-004-2946-0 Sites: US-Dk3, US-Ho1, US-Me2, US-Me4, US-Me5, US-NR1, US-Ton, US-UMB, US-WCr
Lipson, D. A., Wilson, R. F., Oechel, W. C.
This study reports the effects of long-term elevated atmospheric CO2 on root production and microbial activity, biomass, and diversity in a chaparral ecosystem in southern California. The free air CO2 enrichment (FACE) ring was located in a stand dominated by the woody shrub Adenostoma fasciculatum. …
Journal: Applied And Environmental Microbiology, Volume 71 (12): 8573-8580 (2005). DOI: 10.1128/aem.71.12.8573-8580.2005 Sites: US-SO2, US-SO3
Hanson, P. J., Wullschleger, S. D., Norby, R. J., Tschaplinski, T. J., Gunderson, C. A.
Observed responses of upland-oak vegetation of the eastern deciduous hardwood forest to changing CO2, temperature, precipitation and tropospheric ozone (O3) were derived from field studies and interpreted with a stand-level model for an 11-year range of environmental variation upon which scenarios of future …
Journal: Global Change Biology, Volume 11 (9): 1402-1423 (2005). DOI: 10.1111/j.1365-2486.2005.00991.x Sites: US-WBW
