Publications

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Publications Found: 57

Gap-Filling Missing Data In Eddy Covariance Measurements Using Multiple Imputation (MI) For Annual Estimations
Hui, D., Wan, S., Su, B., Katul, G., Monson, R., Luo, Y.

Missing data is a ubiquitous problem in evaluating long-term experimental measurements, such as those associated with the FluxNet project, due to the equipment failures, system maintenance, power-failure, and lightning strikes among other things. To estimate annual values …


Journal: Agricultural And Forest Meteorology, Volume 121 (1-2): 93-111 (2004). DOI: 10.1016/s0168-1923(03)00158-8 Sites: US-Dk3, US-NR1, US-WBW

Soil-Nitrogen Cycling In A Pine Forest Exposed To 5 Years Of Elevated Carbon Dioxide
Finzi, A. C., Schlesinger, W. H.

Empirical and modeling studies have shown that the magnitude and duration of the primary production response to elevated carbon dioxide (CO2) can be constrained by limiting supplies of soil nitrogen (N). We have studied the response of a southern …


Journal: Ecosystems, Volume 6 (5): 444-456 (2003). DOI: 10.1007/s10021-003-0205-1 Sites: US-Dk3

Partitioning Interannual Variability In Net Ecosystem Exchange Between Climatic Variability And Functional Change
Hui, D., Luo, Y., Katul, G.
Interannual variability (IAV) in net ecosystem exchange of carbon (NEE) is a critical factor in projections of future ecosystem changes. However, our understanding of IAV is limited because of the difficulty in isolating its numerous causes. We proposed that IAV in NEE is primarily caused by climatic variability, …


Journal: Tree Physiology, Volume 23 (7): 433-442 (2003). DOI: 10.1093/treephys/23.7.433 Sites: US-Dk3

Reduction Of Forest Floor Respiration By Fertilization On Both Carbon Dioxide-Enriched And Reference 17-Year-Old Loblolly Pine Stands
Butnor, J. R., Johnsen, K. H., Oren, R., Katul, G. G.

Elevated atmospheric carbon dioxide (CO2e) increases soil respiration rates in forest, grassland, agricultural and wetland systems as a result of increased …


Journal: Global Change Biology, Volume 9 (6): 849-861 (2003). DOI: 10.1046/j.1365-2486.2003.00630.x Sites: US-Dk3

Exposure To An Enriched CO2 Atmosphere Alters Carbon Assimilation And Allocation In A Pine Forest Ecosystem
Schafer, K. V., Oren, R., Ellsworth, D. S., Lai, C., Herrick, J. D., Finzi, A. C., Richter, D. D., Katul, G. G.

We linked a leaf-level CO2 assimilation model with a model that accounts for light attenuation in the canopy and measurements of sap-flux-based canopy conductance into a new canopy conductance-constrained carbon assimilation (4C-A) model. We estimated canopy CO2 uptake (AnC) at the Duke Forest …


Journal: Global Change Biology, Volume 9 (10): 1378-1400 (2003). DOI: 10.1046/j.1365-2486.2003.00662.x Sites: US-Dk3

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). DOI: 10.1126/science.1089543 Sites: US-Dk3, US-WBW

Relationship Between Plant Hydraulic And Biochemical Properties Derived From A Steady-State Coupled Water And Carbon Transport Model
Katul, G., Leuning, R., Oren, R.

There is growing evidence that plant stomata have evolved physiological controls to satisfy the demand for CO2 by photosynthesis while regulating water losses by …


Journal: Plant, Cell And Environment, Volume 26 (3): 339-350 (2003). DOI: 10.1046/j.1365-3040.2003.00965.x Sites: US-Dk1, US-Dk2, US-Dk3

Short-Term Light And Leaf Photosynthetic Dynamics Affect Estimates Of Daily Understory Photosynthesis In Four Tree Species
Naumburg, E., Ellsworth, D. S.
Instantaneous measurements of photosynthesis are often implicitly or explicitly scaled to longer time frames to provide an understanding of plant performance in a given environment. For plants growing in a forest understory, results from photosynthetic light response curves in conjunction with diurnal light …


Journal: Tree Physiology, Volume 22 (6): 393-401 (2002). DOI: 10.1093/treephys/22.6.393 Sites: US-Dk3

Species Control Variation In Litter Decomposition In A Pine Forest Exposed To Elevated CO2
Finzi, A. C., Schlesinger, W. H.

Net primary production and the flux of dry matter and nutrients from vegetation to soils has increased following four years of exposure to elevated CO2 in a southern …


Journal: Global Change Biology, Volume 8 (12): 1217-1229 (2002). DOI: 10.1046/j.1365-2486.2002.00551.x Sites: US-Dk3

Seasonality Of Ecosystem Respiration And Gross Primary Production As Derived From FLUXNET Measurements
Falge, E., Baldocchi, D., Tenhunen, J., Aubinet, M., Bakwin, P., Berbigier, P., Bernhofer, C., Burba, G., Clement, R., Davis, K. J., Elbers, J. A., Goldstein, A. H., Grelle, A., Granier, A., Guðmundsson, J., Hollinger, D., Kowalski, A. S., Katul, G., Law, B. E., Malhi, Y., Meyers, T., Monson, R. K., Munger, J., Oechel, W., Paw U, K. T., Pilegaard, K., Rannik, Ü., Rebmann, C., Suyker, A., Valentini, R., Wilson, K., Wofsy, S.

Differences in the seasonal pattern of assimilatory and respiratory processes are responsible for divergences in seasonal net carbon exchange among ecosystems. Using FLUXNET data (
Journal: Agricultural And Forest Meteorology, Volume 113 (1-4): 53-74 (2002). DOI: 10.1016/s0168-1923(02)00102-8 Sites:
US-Blo, US-Dk3, US-Ho1, US-Me4