Publications

Publications Found: 1211
Persistent Effects Of Fire-Induced Vegetation Change On Energy Partitioning And Evapotranspiration In Ponderosa Pine Forests
Montes-Helu, M., Kolb, T., Dore, S., Sullivan, B., Hart, S., Koch, G., Hungate, B.

We compared energy fluxes between a site converted from ponderosa pine (Pinus ponderosa) forest to sparse grassland by a severe wildfire 10 years ago and a nearby, unburned forest. We used eddy covariance and associated instruments to measure total radiation, net radiation, albedo, and fluxes of energy into latent heat, …


Journal: Agricultural And Forest Meteorology, Volume 149 (3-4): 491-500 (2009). DOI: 10.1016/j.agrformet.2008.09.011 Sites: US-Fuf, US-Fwf

Self-Correlation Between Assimilation And Respiration Resulting From Flux Partitioning Of Eddy-Covariance CO2 Fluxes
Vickers, D., Thomas, C. K., Martin, J. G., Law, B.

Self-correlation between estimates of assimilation and respiration of carbon is a consequence of the flux partitioning of eddy-covariance measurements, where the assimilation is computed as the difference between the measured net carbon dioxide flux (NEE) and an …


Journal: Agricultural And Forest Meteorology, Volume 149 (9): 1552-1555 (2009). DOI: 10.1016/j.agrformet.2009.03.009 Sites: US-Me2

Influence Of Clouds And Diffuse Radiation On Ecosystem-Atmosphere Co2and Co18o Exchanges
Still, C. J., Riley, W. J., Biraud, S. C., Noone, D. C., Buenning, N. H., Randerson, J. T., Torn, M. S., Welker, J., White, J. W., Vachon, R., Farquhar, G. D., Berry, J. A.

This study evaluates the potential impact of clouds on ecosystem CO2 and CO2 isotope fluxes (“isofluxes”) in two contrasting ecosystems (a broadleaf deciduous forest and a C4 grassland) in a region for which cloud cover, meteorological, and isotope data are available for driving the isotope‐enabled land surface model (ISOLSM). …


Journal: Journal Of Geophysical Research, Volume 114 (G1): (2009). DOI: http://doi.org/10.1029/2007JG000675 Sites: US-ARM

Debut Of A Flexible Model For Simulating Soil Respiration–Soil Temperature Relationship: Gamma Model
Khomik M., Arain A. M.: Liaw K. L., McCaughey H. J.

A number of empirical models are used in literature to simulate the response of soil respiration (Rs) to soil temperature (Ts). The most widely used ones are the exponential Q10 model and the sigmoid-shaped Lloyd-Taylor and logistic models. None of these models are applicable across a wide range of ecosystems or climates, and none …


Journal: Journal Of Geophysical Research, Volume 114 (G3): n/a-n/a (2009). DOI: 10.1029/2008jg000851 Sites: CA-TP2

Stand-level gas-exchange responses to seasonal drought in very young versus old Douglas-fir forests of the Pacific Northwest
Wharton, S., Schroeder, M., Bible, K., Falk, M., Paw U, K.T.

This study examines how stand age affects ecosystem mass and energy exchange response to seasonal drought in three adjacent Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) forests. The sites include two early seral (ES) stands (0-15 years old) and an old-growth (OG) (~ 450-500 years old) forest in the Wind River Experiment Forest, …


Journal: Tree Physiology, Volume 29: 959-974 (2009). DOI: 10.1093/treephys/tpp039 Sites: US-Wrc

Environmental Controls On Water Use Efficiency During Severe Drought In An Ozark Forest In Missouri, Usa
YANG, B., PALLARDY, S. G., MEYERS, T. P., GU, L., HANSON, P. J., WULLSCHLEGER, S. D., HEUER, M., HOSMAN, K. P., RIGGS, J. S., SLUSS, D. W.


Journal: Global Change Biology, Volume 16 (8): 2252-2271 (2009). DOI: 10.1111/j.1365-2486.2009.02138.x Sites: US-MOz

Satellite observations of decadal scale CO2 fluxes over black spruce forests in Alaska associated with climate variability.
Date, T., Ueyama. M., Harazono, Y., Ota, Y., Iwata, T. and Yamamoto, S.


Journal: J. Agric. Meteorol., Volume 65: 47-60 (2009). DOI: Sites: US-Uaf

Regional Co2and Latent Heat Surface Fluxes In The Southern Great Plains: Measurements, Modeling, And Scaling
Riley, W. J., Biraud, S. C., Torn, M. S., Fischer, M. L., Billesbach, D. P., Berry, J. A.

Characterizing net ecosystem exchanges (NEE) of CO2 and sensible and latent heat fluxes in heterogeneous landscapes is difficult, yet critical given expected changes in climate and land use. We report here a measurement and modeling study designed to improve our understanding of surface to atmosphere gas exchanges under very heterogeneous …


Journal: Journal Of Geophysical Research, Volume 114 (G4): (2009). DOI: http://doi.org/10.1029/2009JG001003 Sites: US-ARM

Seasonal Hydrology Explains Interannual And Seasonal Variation In Carbon And Water Exchange In A Semiarid Mature Ponderosa Pine Forest In Central Oregon
Thomas, C. K., Law, B. E., Irvine, J., Martin, J. G., Pettijohn, J. C., Davis, K. J.

We analyzed 7 years (2002–2008) of micrometeorological and concurrent biological observations of carbon and water fluxes at a mature ponderosa pine forest in central Oregon in a semiarid climate. We sought to evaluate the extent that gross primary productivity, net ecosystem exchange, ecosystem respiration, net primary productivity, …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 114 (G4): n/a-n/a (2009). DOI: 10.1029/2009jg001010 Sites: US-Me2

Woody Plants Modulate The Temporal Dynamics Of Soil Moisture In A Semi-Arid Mesquite Savanna
Potts, D. L., Scott, R. L., Bayram, S., Carbonara, J.

Climate variability and human activities interact to increase the abundance of woody plants in arid and semi-arid ecosystems worldwide. How woody plants interact with rainfall …


Journal: Ecohydrology, Volume 3 (1): 20-27 (2009). DOI: 10.1002/eco.91 Sites: US-SRM