Publications

Publications Found: 1378

Determining The Oxygen Isotope Composition Of Evapotranspiration Using Eddy Covariance
Griffis, T. J., Sargent, S. D., Lee, X., Baker, J. M., Greene, J., Erickson, M., Zhang, X., Billmark, K., Schultz, N., Xiao, W., Hu, N.

The oxygen isotope composition of evapotranspiration (δF) represents an important tracer in the study of biosphere–atmosphere interactions, hydrology, paleoclimate, and carbon cycling. Here, we demonstrate direct measurement of Journal: Boundary-Layer Meteorology, Volume 137 (2): 307-326 (2010), ISBN . DOI: 10.1007/s10546-010-9529-5 Sites: US-Ro1


Climatic And Phenological Controls On Coherent Regional Interannual Variability Of Carbon Dioxide Flux In A Heterogeneous Landscape
Desai, A.R.

The climate sensitivity of plant seasonal life cycles, or phenology, may impart significant carbon cycle feedbacks on climatic change. Analysis of interannual ecosystem carbon exchange provides one way to assess this climate sensitivity. Multiyear eddy covariance carbon dioxide flux observations from five different ecosystems (deciduous …


Journal: Journal Of Geophysical Research, Volume 115 (G00J02): n/a-n/a (2010), ISBN . DOI: 10.1029/2010JG001423 Sites: US-Los, US-PFa, US-Syv, US-WCr

Biometric And Eddy-Covariance Based Estimates Of Carbon Fluxes In An Age-Sequence Of Temperate Pine Forests
Peichl, M., Brodeur, J. J., Khomik, M., Arain, M. A.

We present four years (2005–2008) of biometric (B) and eddy-covariance (EC) measurements of carbon (C) fluxes to constrain estimates of gross primary production (GPP), net primary production (NPP), ecosystem respiration (RE) and net ecosystem production (NEP) in an age-sequence (6-, 19-, 34-, and 69-years-old in 2008) of pine forests …


Journal: Agricultural And Forest Meteorology, Volume 150 (7-8): 952-965 (2010), ISBN . DOI: 10.1016/j.agrformet.2010.03.002 Sites: CA-TP1, CA-TP2, CA-TP3, CA-TP4

Assimilation Exceeds Respiration Sensitivity To Drought: A FLUXNET Synthesis
Schwalm, C. R., Williams, C. A., Schaefer, K., Arneth, A., Bonal, D., Buchmann, N., Chen, J., Law, B. E., Lindroth, A., Luyssaert, S., Reichstein, M., Richardson, A. D.

The intensification of the hydrological cycle, with an observed and modeled increase in drought incidence and severity, underscores the need to quantify drought effects on …


Journal: Global Change Biology, Volume 16 (2): 657-670 (2010), ISBN . DOI: 10.1111/j.1365-2486.2009.01991.x Sites: BR-Ma2

Plant-Soil Interactions And Acclimation To Temperature Of Microbial-Mediated Soil Respiration May Affect Predictions Of Soil CO2 Efflux
Curiel Yuste, J., Ma, S., Baldocchi, D. D.

It is well known that microbial-mediated soil respiration, the major source of CO2 from terrestrial ecosystems, is sensitive to temperature. Here, we hypothesize that some mechanisms, such as acclimation of microbial respiration to temperature and/or regulation by plant fresh C inputs of the temperature sensitivity of …


Journal: Biogeochemistry, Volume 98 (1-3): 127-138 (2010), ISBN . DOI: 10.1007/s10533-009-9381-1 Sites: US-Ton

Invasive Insects Impact Forest Carbon Dynamics
Clark, K. L., Skowronski, N., Hom, J.

Invasive insects can impact ecosystem functioning by altering carbon, nutrient, and hydrologic cycles. In this study, we used eddy covariance to measure net CO2 exchange with the atmosphere (NEE), and biometric measurements to characterize net ecosystem productivity (NEP) in oak- and pine-dominated forests that were defoliated …


Journal: Global Change Biology, Volume 16 (1): 88-101 (2010), ISBN . DOI: 10.1111/j.1365-2486.2009.01983.x Sites: US-Ced, US-Slt

Controls On Mangrove Forest-Atmosphere Carbon Dioxide Exchanges In Western Everglades National Park
Barr, J. G., Engel, V., Fuentes, J. D., Zieman, J. C., O'Halloran, T. L., Smith, T. J., Anderson, G. H.

We report on net ecosystem production (NEP) and key environmental controls on net ecosystem exchange (NEE) of carbon dioxide (CO2) between a mangrove forest and the atmosphere in the coastal Florida Everglades. An eddy covariance system deployed above the canopy was used to determine NEE during January 2004 through August …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 115 (G2): n/a-n/a (2010), ISBN . DOI: 10.1029/2009JG001186 Sites: US-Skr

Carbon And Water Fluxes From Ponderosa Pine Forests Disturbed By Wildfire And Thinning
Dore, S., Kolb, T. E., Montes-Helu, M., Eckert, S. E., Sullivan, B. W., Hungate, B. A., Kaye, J. P., Hart, S. C., Koch, G. W., Finkral, A.

Disturbances alter ecosystem carbon dynamics, often by reducing carbon uptake and stocks. We compared the impact of two types of disturbances that represent the most likely future conditions of currently …


Journal: Ecological Applications, Volume 20 (3): 663-683 (2010), ISBN . DOI: 10.1890/09-0934.1 Sites: US-Fmf, US-Fuf, US-Fwf

Soil CO2 Production In Upland Tundra Where Permafrost Is Thawing
Lee, H., Schuur, E. A. G., Vogel, J. G.

Permafrost soils store nearly half of global soil carbon (C), and therefore permafrost thawing could lead to large amounts of greenhouse gas emissions via decomposition of soil organic matter. When ice-rich permafrost thaws, it creates a localized surface subsidence called thermokarst terrain, which changes the soil microenvironment. …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 115 (G1): n/a-n/a (2010), ISBN . DOI: 10.1029/2008jg000906 Sites: US-EML

Measurements Necessary For Assessing The Net Ecosystem Carbon Budget Of Croplands
Smith, P., Lanigan, G., Kutsch, W. L., Buchmann, N., Eugster, W., Aubinet, M., Ceschia, E., Béziat, P., Yeluripati, J. B., Osborne, B., Moors, E. J., Brut, A., Wattenbach, M., Saunders, M., Jones, M.

There are a number of methods that can be used to help assess carbon budgets at the site to continental scales. Eddy covariance (EC) networks have been developed over the last decade and have been used to make many advances in our understanding. However, eddy covariance …


Journal: Agriculture, Ecosystems & Environment, Volume 139 (3): 302-315 (2010), ISBN . DOI: 10.1016/j.agee.2010.04.004 Sites: BR-Ma2