Publications

Publications Found: 57
Role Of Vegetation In Determining Carbon Sequestration Along Ecological Succession In The Southeastern United States
Stoy, P. C., Katul, G. G., Siqueira, M. B., Juang, J., Novick, K. A., Mccarthy, H. R., Oishi, A. C., Oren, R.

Vegetation plays a central role in controlling terrestrial carbon (C) exchange, but quantifying its impacts on C cycling on time scales of ecological succession is hindered …


Journal: Global Change Biology, Volume 14 (6): 1409-1427 (2008), ISBN . DOI: 10.1111/j.1365-2486.2008.01587.x Sites: US-Dk3

Eco-Hydrological Controls On Summertime Convective Rainfall Triggers
Juang, J., Katul, G. G., Porporato, A., Stoy, P. C., Siqueira, M. S., Detto, M., Kim, H., Oren, R.

Triggers of summertime convective rainfall depend on numerous interactions and feedbacks, often compounded by spatial variability in soil moisture and its impacts on vegetation …


Journal: Global Change Biology, Volume 13 (4): 887-896 (2007), ISBN . DOI: 10.1111/j.1365-2486.2007.01315.x Sites: US-Dk3

Separating The Effects Of Albedo From Eco-Physiological Changes On Surface Temperature Along A Successional Chronosequence In The Southeastern United States
Juang, J.-Y., Katul, G.G., Siqueira, M.B.S., Stoy, P.C., Novick, K.A.

In the southeastern United States (SE), the conversion of abandoned agricultural land to forests is the dominant feature of land-cover change. However, few attempts have been made to quantify the impact of such conversion on surface temperature. Here, this issue is explored experimentally and analytically in three adjacent ecosystems …


Journal: Geophysical Research Letters, Volume 34 (21): n/a-n/a (2007), ISBN . DOI: 10.1029/2007gl031296 Sites: US-Dk3

Temporal Dynamics And Spatial Variability In The Enhancement Of Canopy Leaf Area Under Elevated Atmospheric CO2
McCarthy, H. R., Oren, R., Finzi, A. C., Ellsworth, D. S., Kim, H., Johnsen, K. H., Millar, B.

Increased canopy leaf area (L) may lead to higher forest productivity and alter processes such as species dynamics and ecosystem mass and energy fluxes. Few CO2 enrichment studies have been conducted in closed canopy forests and none have shown a sustained enhancement of L. We reconstructed 8 years (1996–2003) …


Journal: Global Change Biology, Volume 13 (12): 2479-2497 (2007), ISBN . DOI: 10.1111/j.1365-2486.2007.01455.x Sites: US-Dk3

Canopy Leaf Area Constrains [Co2]-Induced Enhancement Of Productivity And Partitioning Among Aboveground Carbon Pools
McCarthy, H. R., Oren, R., Finzi, A. C., Johnsen, K. H.

Net primary productivity (NPP) is enhanced under future atmospheric [CO2] in temperate forests representing a broad range of productivity. Yet questions remain in regard to how elevated [CO2]-induced NPP enhancement may be affected by climatic variations and limiting nutrient resources, as well as how this additional …


Journal: Proceedings Of The National Academy Of Sciences, Volume 103 (51): 19356-19361 (2006), ISBN . DOI: 10.1073/pnas.0609448103 Sites: US-Dk3

Separating The Effects Of Climate And Vegetation On Evapotranspiration Along A Successional Chronosequence In The Southeastern US
Stoy, P. C., Katul, G. G., Siqueira, M. B., Juang, J., Novick, K. A., Mccarthy, H. R., Christopher Oishi, A., Uebelherr, J. M., Kim, H., Oren, R.

We combined Eddy-covariance measurements with a linear perturbation analysis to isolate the relative contribution of physical and biological drivers on evapotranspiration (ET) …


Journal: Global Change Biology, Volume 12 (11): 2115-2135 (2006), ISBN . DOI: 10.1111/j.1365-2486.2006.01244.x Sites: US-Dk3

Multiscale Model Intercomparisons Of CO2 And H2O Exchange Rates In A Maturing Southeastern US Pine Forest
Siqueira, M. B., Katul, G. G., Sampson, D. A., Stoy, P. C., Juang, J., Mccarthy, H. R., Oren, R.

We compared four existing process-based stand-level models of varying complexity (physiological principles in predicting growth, photosynthesis and evapotranspiration, biogeochemical …


Journal: Global Change Biology, Volume 12 (7): 1189-1207 (2006), ISBN . DOI: 10.1111/j.1365-2486.2006.01158.x Sites: US-Dk3

A Multi-Site Analysis Of Random Error In Tower-Based Measurements Of Carbon And Energy Fluxes
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), ISBN . DOI: 10.1016/j.agrformet.2006.01.007 Sites: CA-Let, US-Dk3, US-Ho1, US-Ne1, US-Ne2, US-Ne3, US-PFa

An Evaluation Of Models For Partitioning Eddy Covariance-Measured Net Ecosystem Exchange Into Photosynthesis And Respiration
Stoy, P. C., Katul, G. G., Siqueira, M. B., Juang, J., Novick, K. A., Uebelherr, J. M., Oren, R.

We measured net ecosystem CO2 exchange (NEE) using the eddy covariance (EC) technique for 4 years at adjoining old field (OF), planted pine (PP) and hardwood forest (HW) ecosystems in the Duke Forest, NC. To compute annual sums of NEE and its components – gross …


Journal: Agricultural And Forest Meteorology, Volume 141 (1): 2-18 (2006), ISBN . DOI: 10.1016/j.agrformet.2006.09.001 Sites: US-Dk3

Estimating The Uncertainty In Annual Net Ecosystem Carbon Exchange: Spatial Variation In Turbulent Fluxes And Sampling Errors In Eddy-Covariance Measurements
Oren, R., Hsieh, C., Stoy, P., Albertson, J., Mccarthy, H. R., Harrell, P., Katul, G. G.

Above forest canopies, eddy covariance (EC) measurements of mass (CO2, H2O vapor) and energy exchange, assumed to represent ecosystem fluxes, are commonly …


Journal: Global Change Biology, Volume 12 (5): 883-896 (2006), ISBN . DOI: 10.1111/j.1365-2486.2006.01131.x Sites: US-Dk1, US-Dk2, US-Dk3