Publications

Publications Found: 1437

Hydrologic Balance In An Intact Temperate Forest Ecosystem Under Ambient And Elevated Atmospheric CO2 Concentration
Schafer, K. V., Oren, R., Lai, C., Katul, G. G.

Increasing atmospheric CO2 concentration decreases stomatal conductance in many species, but the savings of water from reduced transpiration may permit the forest to retain greater leaf area index (L). Therefore, the net effect on water use in forest ecosystems under a higher CO2 atmosphere is difficult …


Journal: Global Change Biology, Volume 8 (9): 895-911 (2002). DOI: 10.1046/j.1365-2486.2002.00513.x Sites: US-Dk3

Modeling And Measuring The Effects Of Disturbance History And Climate On Carbon And Water Budgets In Evergreen Needleleaf Forests
Thornton, P., Law, B., Gholz, H. L., Clark, K. L., Falge, E., Ellsworth, D., Goldstein, A., Monson, R., Hollinger, D., Falk, M., Chen, J., Sparks, J.

The effects of disturbance history, climate, and changes in atmospheric carbon dioxide (CO2) concentration and nitrogen deposition (Ndep) on carbon and water fluxes in seven North American evergreen forests are assessed using a coupled water–carbon–nitrogen model, canopy-scale flux observations, and descriptions …


Journal: Agricultural And Forest Meteorology, Volume 113 (1-4): 185-222 (2002). DOI: 10.1016/s0168-1923(02)00108-9 Sites: US-Ho1, US-Ho2, US-Ho3

Forest Carbon Balance Under Elevated CO2
Hamilton, J., Finzi, A., DeLucia, E., George, K., Naidu, S., Schlesinger, W.

Free-air CO2 enrichment (FACE) technology was used to expose a loblolly pine (Pinus taeda L.) forest to elevated atmospheric CO2 (ambient + 200 µl l–1). After 4 years, basal area …


Journal: Oecologia, Volume 131 (2): 250-260 (2002). DOI: 10.1007/s00442-002-0884-x Sites: US-Dk3

Leaf Area Dynamics Of A Boreal Black Spruce Fire Chronosequence
Bond-Lamberty, B., Wang, C., Gower, S. T., Norman, J.

Specific leaf area (SLA) and leaf area index (LAI) were estimated using site-specific allometric equations for a boreal black spruce (Picea mariana (Mill.) BSP) fire chronosequence in northern Manitoba, Canada. Stands ranged from 3 to 131 years in age and had soils that were categorized as well or poorly drained. The goals …


Journal: Tree Physiology, Volume 22 (14): 993-1001 (2002). DOI: 10.1093/treephys/22.14.993 Sites: CA-Man

Energy Exchange Across A Chronosequence Of Slash Pine Forests In Florida
Gholz, H. L., Clark, K. L.

We measured net atmospheric exchanges of energy and water vapor using eddy covariance along a chronosequence of Pinus elliottii plantations in north Florida: a recent clear-cut, a mid-rotation stand, and a 24-year-old, rotation-aged stand. Reflected energy averaged 0.26 of incoming solar radiation at the clear-cut and 0.18 …


Journal: Agricultural And Forest Meteorology, Volume 112 (2): 87-102 (2002). DOI: 10.1016/s0168-1923(02)00059-x Sites: US-SP1, US-SP2, US-SP3, US-SP4

Carbon Exchange Of An Old-Growth Eastern Hemlock (Tsuga Canadensis) Forest In Central New England
Hadley, J. L., Schedlbauer, J. L.

Carbon (C) exchange of a ∼200-year-old eastern hemlock (Tsuga canadensis L.) forest in central Massachusetts, USA, was estimated from mid-October 2000 through October 2001 based on eddy covariance measurements and statistical modeling from microclimatic data. Measurements were made in 68% of the hours during the year of …


Journal: Tree Physiology, Volume 22 (15-16): 1079-1092 (2002). DOI: 10.1093/treephys/22.15-16.1079 Sites: US-Ha2

Seasonal And Interannual Variation In Carbon Dioxide Exchange And Carbon Balance In A Northern Temperate Grassland
Flanagan, L. B., Wever, L. A., Carlson, P. J.

Net ecosystem carbon dioxide (CO2) exchange (NEE) was measured in a northern temperate grassland near Lethbridge, Alberta, Canada for three growing seasons using the eddy covariance technique. The study objectives were to document how NEE and its major component processes—gross photosynthesis (GPP) and total ecosystem …


Journal: Global Change Biology, Volume 8 (7): 599-615 (2002). DOI: 10.1046/j.1365-2486.2002.00491.x Sites: CA-Let

Carbon Sequestration Studied In Western U.S. Mountains
Schimel, D.S., Kittel, T.G.F., Running, S., Monson, R.K., Turnipseed, A.A., Anderson, D.

The U.S. carbon budget has been the focus of recent scientific debate [Fan et al., 1998; Pacala et al., 2001; Gurney et al., 2002] Even conservative estimates suggest that U.S. …


Journal: EOS, Transactions American Geophysical Union, Volume 83 (40): 445-449 (2002). DOI: 10.1029/2002eo000314 Sites: US-NR1

Seasonal Patterns Of Reflectance Indices, Carotenoid Pigments And Photosynthesis Of Evergreen Chaparral Species
Stylinski, C. D., Gamon, J. A., Oechel, W. C.

This study examined the ability of the Photochemical Reflectance Index (PRI) to track seasonal variations in carotenoid pigments and photosynthetic activity of mature evergreen chaparral shrubs. Our results confirm that PRI scales with photosystem two (PSII) …


Journal: Oecologia, Volume 131 (3): 366-374 (2002). DOI: 10.1007/s00442-002-0905-9 Sites: US-SO2, US-SO3

Measuring Forest Floor CO2 Fluxes In A Douglas-Fir Forest
Drewitt, G., Black, T., Nesic, Z., Humphreys, E., Jork, E., Swanson, R., Ethier, G., Griffis, T., Morgenstern, K.

CO2 exchange was measured on the forest floor of a coastal temperate Douglas-fir forest located near Campbell River, British Columbia, Canada. Continuous measurements were obtained at six locations using an automated chamber system between April and December, 2000. Fluxes were measured every half hour by circulating chamber …


Journal: Agricultural And Forest Meteorology, Volume 110 (4): 299-317 (2002). DOI: 10.1016/s0168-1923(01)00294-5 Sites: CA-Ca1