Publications

Publications Found: 1437

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). DOI: 10.1016/s0168-1923(00)00233-1 Sites: US-Shd

The Seasonal Water And Energy Exchange Above And Within A Boreal Aspen Forest
Blanken, P., Black, T., Neumann, H., den Hartog, G., Yang, P., Nesic, Z., Lee, X.

The seasonal water and energy exchange of a boreal aspen forest underlain by a hazelnut understory is described. Measurements of above-aspen latent and sensible heat, short-wave and net radiation, and photosynthetically active radiation are compared to those measured above the hazelnut understory. Understory radiation measurements …


Journal: Journal Of Hydrology, Volume 245 (1-4): 118-136 (2001). DOI: 10.1016/s0022-1694(01)00343-2 Sites: CA-Oas

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). DOI: 10.1007/s004420100719 Sites: CA-Obs

Use Of A Simulation Model And Ecosystem Flux Data To Examine Carbon-Water Interactions In Ponderosa Pine
Williams, M., Law, B. E., Anthoni, P. M., Unsworth, M. H.
Drought stress plays an important role in determining both the structure and function of forest ecosystems, because of the close association between the carbon (C) and hydrological cycles. We used a detailed model of the soil–plant–atmosphere continuum to investigate the links between carbon uptake and …


Journal: Tree Physiology, Volume 21 (5): 287-298 (2001). DOI: 10.1093/treephys/21.5.287 Sites: US-Me4

Gross Primary Productivity In Duke Forest: Modeling Synthesis Of CO2 Experiment And Eddy-Flux Data
Luo, Y., Medlyn, B., Hui, D., Ellsworth, D., Reynolds, J., Katul, G.


Journal: Ecological Applications, Volume 11 (1): 239-252 (2001). DOI: 10.2307/3061070 Sites: US-Dk3

Photosynthesis And Light-Use Efficiency By Plants In A Canadian Boreal Forest Ecosystem
Whitehead, D., Gower, S. T.
Measurements of the photosynthetic response to midsummer irradiance were made for 11 species representing the dominant trees, understory shrubs, herbaceous plants and moss species in an old black spruce (Picea mariana (Mill.) B.S.P.) boreal forest ecosystem. Maximum rates of photosynthesis per unit …


Journal: Tree Physiology, Volume 21 (12-13): 925-929 (2001). DOI: 10.1093/treephys/21.12-13.925 Sites: CA-Obs

Response Of Stomatal Conductance To Drought In Ponderosa Pine: Implications For Carbon And Ozone Uptake
Panek, J. A., Goldstein, A. H.
To gain insight into the limitations imposed by a typical Mediterranean-climate summer drought on the uptake of carbon and ozone in the ponderosa pine (Pinus ponderosa Dougl. ex Laws.) ecosystem, we compared diurnal trends in leaf physiology of young trees in a watered and a control plot …


Journal: Tree Physiology, Volume 21 (5): 337-344 (2001). DOI: 10.1093/treephys/21.5.337 Sites: US-Blo

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). DOI: 10.1029/2000gl012154 Sites: US-Dk3

Annual Cycle Of CO2 Exchange At A Bog Peatland
Lafleur, P. M., Roulet, N. T., Admiral, S. W.

Eddy covariance measurements of the carbon dioxide flux from an ombrotrophic bog near Ottawa, Canada, were made between June 1, 1998, and May 31, 1999. Net ecosystem exchange of CO2 (NEE) showed …


Journal: Journal Of Geophysical Research: Atmospheres, Volume 106 (D3): 3071-3081 (2001). DOI: 10.1029/2000jd900588 Sites: CA-Mer

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). DOI: 10.1046/j.0016-8025.2001.00706.x Sites: US-WBW