Publications

Publications Found: 1371
Transpiration In Response To Variation In Microclimate And Soil Moisture In Southeastern Deciduous Forests
Oren, R., Pataki, D. E.

Responses of forests to changes in environmental conditions reflect the integrated behavior of their constituent species. We investigated sap flux-scaled transpiration responses of two species prevalent in upland eastern hardwood forests,Journal: Oecologia, Volume 127 (4): 549-559 (2001), ISBN . DOI: 10.1007/s004420000622 Sites: US-Dk3


Environmental Controls On Ground Cover Species Composition And Productivity In A Boreal Black Spruce Forest
Bisbee, K., Gower, S., Norman, J., Nordheim, E.

Boreal black spruce forests typically have a dense ground cover of bryophytes. The two main bryophyte groups in boreal black spruce forests, feathermoss and Sphagnum, have ecophysiological characteristics that influence …


Journal: Oecologia, Volume 129 (2): 261-270 (2001), ISBN . DOI: 10.1007/s004420100719 Sites: CA-Obs

Paired-Tower Measurements Of Carbon And Energy Fluxes Following Disturbance In The Boreal Forest
Amiro, B. D.

Disturbances by fire and harvesting are thought to regulate the carbon balance of the Canadian boreal forest over scales of several decades. However, there are few direct measurements …


Journal: Global Change Biology, Volume 7 (3): 253-268 (2001), ISBN . DOI: 10.1046/j.1365-2486.2001.00398.x Sites: CA-SF2, CA-SF3

Anthropogenic Emission Of Mercury To The Atmosphere In The Northeast United States
Lee, X., Bullock, O. R., Andres, R. J.

The severity and spatial extent of the health impact of anthropogenic mercury (Hg) emission to the atmosphere depend on the emission rate and chemical form of the emitted species. The few measurements of combustion flue gas give highly variable results about how the emission is divided between the elemental (Hg°) and reactive forms …


Journal: Geophysical Research Letters, Volume 28 (7): 1231-1234 (2001), ISBN . DOI: 10.1029/2000gl012274 Sites: US-GMF

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

Quantifying The Complexity In Mapping Energy Inputs And Hydrologic State Variables Into Land-Surface Fluxes
Katul, G. G., Lai, C., Albertson, J. D., Vidakovic, B., Schäfer, K. V., Hsieh, C., Oren, R.

This study explores the complexity (or disorder) in mapping energy (Rn) forcing to land surface fluxes of sensible heat (Hs), water vapor (LE), and carbon dioxide (or net ecosystem exchange, NEE) for different soil water states (θ). Specifically, we ask, does the vegetation …


Journal: Geophysical Research Letters, Volume 28 (17): 3305-3307 (2001), ISBN . DOI: 10.1029/2000gl012154 Sites: US-Dk3

Prairie Growth, PAR Albedo And Seasonal Distribution Of Energy Fluxes
Burba, G. G., Verma, S. B.

Year-round measurements of surface energy fluxes, supporting meteorological parameters, soil moisture, and leaf foliage area were made at a tallgrass prairie site in north-central Oklahoma. Here we present the results of the first year (August 1996 to early September 1997) …


Journal: Agricultural And Forest Meteorology, Volume 107 (3): 227-240 (2001), ISBN . DOI: 10.1016/s0168-1923(00)00233-1 Sites: US-Shd

Ecosystem Respiration In A Young Ponderosa Pine Plantation In The Sierra Nevada Mountains, California
Xu, M., DeBiase, T. A., Qi, Y., Goldstein, A., Liu, Z.
We estimated total ecosystem respiration from a ponderosa pine (Pinus ponderosa Dougl. ex Laws.) plantation in the Sierra Nevada Mountains near Georgetown, California, from June to October, 1998. We apportioned ecosystem respiration among heterotrophic, root, stem and foliage based on relationships …


Journal: Tree Physiology, Volume 21 (5): 309-318 (2001), ISBN . DOI: 10.1093/treephys/21.5.309 Sites: US-Blo

Multiscale Analysis Of Vegetation Surface Fluxes: From Seconds To Years
Katul, G., Lai, C., Schäfer, K., Vidakovic, B., Albertson, J., Ellsworth, D., Oren, R.

The variability in land surface heat (H), water vapor (LE), and CO2 (or net ecosystem exchange, NEE) fluxes was investigated at scales ranging from fractions of seconds to years using eddy-covariance flux measurements above a pine forest. Because these fluxes …


Journal: Advances In Water Resources, Volume 24 (9-10): 1119-1132 (2001), ISBN . DOI: 10.1016/s0309-1708(01)00029-x Sites: US-Dk3

FLUXNET: A New Tool To Study The Temporal And Spatial Variability Of Ecosystem–Scale Carbon Dioxide, Water Vapor, And Energy Flux Densities
Baldocchi, D., Falge, E., Gu, L., Olson, R., Hollinger, D., Running, S., Anthoni, P., Bernhofer, C., Davis, K., Evans, R., Fuentes, J., Goldstein, A., Katul, G., Law, B., Lee, X., Malhi, Y., Meyers, T., Munger, W., Oechel, W., Paw, K. T., Pilegaard, K., Schmid, H. P., Valentini, R., Verma, S., Vesala, T., Wilson, K., Wofsy, S.

FLUXNET is a global network of micrometeorological flux measurement sites that measure the exchanges of carbon dioxide, water vapor, and energy between the biosphere and atmosphere. At present over 140 sites are operating on a long–term and continuous basis. Vegetation under study includes temperate conifer and broadleaved (deciduous …


Journal: Bulletin Of The American Meteorological Society, Volume 82 (11): 2415-2434 (2001), ISBN . DOI: 10.1175/1520-0477(2001)082<2415:FANTTS>2.3.CO;2 Sites: US-MMS