Publications

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Publications Found: 70

A Global Relationship Between The Heterotrophic And Autotrophic Components Of Soil Respiration?
Bond-Lamberty, B., Wang, C., Gower, S. T.

Soil surface CO2 flux (RS) is overwhelmingly the product of respiration by roots (autotrophic respiration, RA) and soil organisms (heterotrophic respiration, RH). Many studies have attempted to partition RS into these two components, with highly …


Journal: Global Change Biology, Volume 10 (10): 1756-1766 (2004), ISBN . DOI: 10.1111/j.1365-2486.2004.00816.x Sites: BR-Ma2, CA-Man, CA-Oas, CA-Obs, US-Dk1, US-Dk2, US-Dk3, US-Ha2, US-Me1, US-Me3, US-Me4, US-Me5, US-WBW

A Nonparametric Method For Separating Photosynthesis And Respiration Components In CO2 Flux Measurements
Yi, C., Li, R., Bakwin, P. S., Desai, A., Ricciuto, D. M., Burns, S. P., Turnipseed, A. A., Wofsy, S. C., Munger, J. W., Wilson, K., Monson, R. K.

Future climate change is expected to affect ecosystem-atmosphere CO2 exchange, particularly through the influence of temperature. To date, however, few studies have shown that differences in the response of net ecosystem CO2 exchange (NEE) to temperature among ecosystems can be explained by differences in the …


Journal: Geophysical Research Letters, Volume 31 (17): n/a-n/a (2004), ISBN . DOI: 10.1029/2004gl020490 Sites: US-Ha2, US-Los, US-NR1, US-PFa, US-WBW, US-WCr

Fast Labile Carbon Turnover Obscures Sensitivity Of Heterotrophic Respiration From Soil To Temperature: A Model Analysis
Gu, L., Post, W. M., King, A. W.

Labile carbon, although often a small fraction of soil organic carbon (SOC), significantly affects heterotrophic respiration at short timescales because of its rapid decomposition. However, in the current literature, most soil respiration measurements are interpreted without simultaneous information on labile carbon pool dynamics. …


Journal: Global Biogeochemical Cycles, Volume 18 (1): n/a-n/a (2004), ISBN . DOI: 10.1029/2003gb002119 Sites: US-WBW

Impacts Of Fine Root Turnover On Forest NPP And Soil C Sequestration Potential
Matamala, R., Gonzalez-Meler, M. A., Jastrow, J. D., Norby, R. J., Schlesinger, W. H.

Estimates of forest net primary production (NPP) demand accurate estimates of root production and turnover. We assessed root turnover with the use of an isotope tracer in two forest free-air carbon dioxide enrichment experiments. Growth at elevated carbon dioxide did not accelerate root turnover in either the pine or the hardwood …


Journal: Science, Volume 302 (5649): 1385-1387 (2003), ISBN . DOI: 10.1126/science.1089543 Sites: US-Dk3, US-WBW

Modelling The Discrimination Of 13CO2 Above And Within A Temperate Broad-Leaved Forest Canopy On Hourly To Seasonal Time Scales
Baldocchi, D. D., Bowling, D. R.

Fluxes and concentrations of carbon dioxide and 13CO2 provide information about ecosystem physiological processes and their response to environmental …


Journal: Plant, Cell And Environment, Volume 26 (2): 231-244 (2003), ISBN . DOI: 10.1046/j.1365-3040.2003.00953.x Sites: US-WBW

Diurnal And Seasonal Changes In Stem Increment And Water Use By Yellow Poplar Trees In Response To Environmental Stress
McLaughlin, S. B., Wullschleger, S. D., Nosal, M.
To evaluate indicators of whole-tree physiological responses to climate stress, we determined seasonal, daily and diurnal patterns of growth and water use in 10 yellow poplar (Liriodendron tulipifera L.) trees in a stand recently released from competition. Precise measurements of stem increment …


Journal: Tree Physiology, Volume 23 (16): 1125-1136 (2003), ISBN . DOI: 10.1093/treephys/23.16.1125 Sites: US-WBW

How The Environment, Canopy Structure And Canopy Physiological Functioning Influence Carbon, Water And Energy Fluxes Of A Temperate Broad-Leaved Deciduous Forest–An Assessment With The Biophysical Model CANOAK
Baldocchi, D. D., Wilson, K. B., Gu, L.
This paper focuses on how canopy structure, its physiological functioning and the environment interact to control and drive the exchange of carbon dioxide (CO2) and water vapor between a temperate forest stand and the atmosphere. First, we present an overview of how temporal and spatial variations …


Journal: Tree Physiology, Volume 22 (15-16): 1065-1077 (2002), ISBN . DOI: 10.1093/treephys/22.15-16.1065 Sites: US-WBW

Belowground Carbon Allocation In Forests Estimated From Litterfall And IRGA-Based Soil Respiration Measurements
Davidson, E., Savage, K., Bolstad, P., Clark, D., Curtis, P., Ellsworth, D., Hanson, P., Law, B., Luo, Y., Pregitzer, K., Randolph, J., Zak, D.

Allocation of C to belowground plant structures is one of the most important, yet least well quantified fluxes of C in terrestrial ecosystems. In a literature review of mature forests worldwide, Raich …


Journal: Agricultural And Forest Meteorology, Volume 113 (1-4): 39-51 (2002), ISBN . DOI: 10.1016/s0168-1923(02)00101-6 Sites:
CR-Lse, US-Dk3, US-Ho1, US-Me4, US-MMS, US-UMB, US-WBW

Leaf Age Affects The Seasonal Pattern Of Photosynthetic Capacityand Net Ecosystem Exchange Of Carbon In A Deciduous Forest
Wilson, K. B., Baldocchi, D. D., Hanson, P. J.

Temporal trends in photosynthetic capacity are a critical factorin determining the seasonality and magnitude of ecosystem carbonfluxes. At a mixed deciduous forest in the south-eastern United States (Walker Branch Watershed, Oak Ridge, TN, USA), we independently measured seasonal trends in photosynthetic capacity (using single-leaf …


Journal: Plant, Cell And Environment, Volume 24 (6): 571-583 (2001), ISBN . DOI: 10.1046/j.0016-8025.2001.00706.x Sites: US-WBW

A Spectral Analysis Of Biosphere–Atmosphere Trace Gas Flux Densities And Meteorological Variables Across Hour To Multi-Year Time Scales
Baldocchi, D., Falge, E., Wilson, K.

The advent of long-term studies on CO2 and water vapor exchange provides us with new information on how the atmosphere and biosphere interact. Conventional time series analysis suggests that temporal fluctuations of weather variables and mass and energy flux densities occur on numerous time scales. The time scales …


Journal: Agricultural And Forest Meteorology, Volume 107 (1): 1-27 (2001), ISBN . DOI: 10.1016/s0168-1923(00)00228-8 Sites: US-WBW