Publications

Publications Found: 1437

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

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

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

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

Carbon Dioxide And Water Vapor Exchange By Young And Old Ponderosa Pine Ecosystems During A Dry Summer
Law, B. E., Goldstein, A. H., Anthoni, P. M., Unsworth, M. H., Panek, J. A., Bauer, M. R., Fracheboud, J. M., Hultman, N.

We investigated key factors controlling mass and energy exchange by a young (6-year-old) ponderosa pine (Pinus ponderosa Laws.) plantation on the west side of the Sierra Nevada Mountains and an old-growth ponderosa pine forest (mix of 45- and 250-year-old trees) on the east side of the Cascade Mountains, from June through …


Journal: Tree Physiology, Volume 21 (5): 299-308 (2001). DOI: 10.1093/treephys/21.5.299 Sites: US-Me4, US-Me5

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). DOI: 10.1046/j.1365-2486.2001.00398.x Sites: CA-SF2, CA-SF3

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). DOI: 10.1093/treephys/21.5.309 Sites: US-Blo