Publications

Publications Found: 1437

Partitioning Interannual Variability In Net Ecosystem Exchange Between Climatic Variability And Functional Change
Hui, D., Luo, Y., Katul, G.
Interannual variability (IAV) in net ecosystem exchange of carbon (NEE) is a critical factor in projections of future ecosystem changes. However, our understanding of IAV is limited because of the difficulty in isolating its numerous causes. We proposed that IAV in NEE is primarily caused by climatic variability, …


Journal: Tree Physiology, Volume 23 (7): 433-442 (2003). DOI: 10.1093/treephys/23.7.433 Sites: US-Dk3

Interannual Variability In Net CO2 Exchange Of A Native Tallgrass Prairie
Suyker, A. E., Verma, S. B., Burba, G. G.

Year-round eddy covariance flux measurements were made in a native tallgrass prairie in north-central Oklahoma, USA during 1997–2000 to quantify carbon exchange and its interannual …


Journal: Global Change Biology, Volume 9 (2): 255-265 (2003). DOI: 10.1046/j.1365-2486.2003.00567.x Sites: US-Shd

Temperature As A Control Over Ecosystem CO2 Fluxes In A High-Elevation, Subalpine Forest
Huxman, T. E., Turnipseed, A. A., Sparks, J. P., Harley, P. C., Monson, R. K.

We evaluated the hypothesis that CO2 uptake by a subalpine, coniferous forest is limited by cool temperature during the growing season. Using the eddy covariance approach we conducted observations of net ecosystem CO2 exchange (NEE) across two growing seasons. When pooled for the entire growing season during …


Journal: Oecologia, Volume 134 (4): 537-546 (2003). DOI: 10.1007/s00442-002-1131-1 Sites: US-NR1

Minimizing Artifacts And Biases In Chamber-Based Measurements Of Soil Respiration
Davidson, E., Savage, K., Verchot, L., Navarro, R.

Soil respiration is one of the largest and most important fluxes of carbon in terrestrial ecosystems. While eddy covariance methods are becoming widely used to measure nighttime total ecosystem respiration, the use of chambers placed over the soil is the most direct way of measuring respiration occurring within the soil and litter …


Journal: Agricultural And Forest Meteorology, Volume 113 (1-4): 21-37 (2002). DOI: 10.1016/s0168-1923(02)00100-4 Sites: US-Ho1

Effects Of Aggregated Classifications Of Forest Composition On Estimates Of Evapotranspiration In A Northern Wisconsin Forest
Mackay, D. S., Ahl, D. E., Ewers, B. E., Gower, S. T., Burrows, S. N., Samanta, S., Davis, K. J.

Forest management presents challenges to accurate prediction of water and carbon exchange between the land surface and atmosphere, due to its alteration of forest structure …


Journal: Global Change Biology, Volume 8 (12): 1253-1265 (2002). DOI: 10.1046/j.1365-2486.2002.00554.x Sites: US-PFa

Atmospheric Methyl Tertiary Butyl Ether (MTBE) At A Rural Mountain Site In California
Schade, G. W., Dreyfus, G. B., Goldstein, A. H.

Methyl tertiary butyl ether (MTBE) was measured in air samples collected at hourly intervals near Blodgett Forest Research Station on the western slope of the Sierra Nevada, California, in July 1997, October 1998, and June through September 1999. Mixing ratios ranged from below the detection limit (< approximately 0.01 ppbv) to …


Journal: Journal Of Environment Quality, Volume 31 (4): 1088-1094 (2002). DOI: 10.2134/jeq2002.1088 Sites: US-Blo

Observational Constraints On The Contribution Of Isoprene Oxidation To Ozone Production On The Western Slope Of The Sierra Nevada, California
Dreyfus, G. B., Schade, G. W., Goldstein, A. H.

Observations of isoprene and its oxidation products methacrolein (MACR) and methyl vinyl ketone (MVK) are used to quantify the impact of isoprene oxidation on ozone production along the western slope of the Sierra Nevada mountains. Regular daytime up-slope wind flow patterns transport anthropogenic volatile organic compounds (VOC) …


Journal: Journal Of Geophysical Research, Volume 107 (D19): n/a-n/a (2002). DOI: 10.1029/2001jd001490 Sites: US-Blo

Estimation Of Tropical Forest Structural Characteristics Using Large-Footprint Lidar
Drake, J. B., Dubayah, R. O., Clark, D. B., Knox, R. G., Blair, J., Hofton, M. A., Chazdon, R. L., Weishampel, J. F., Prince, S.

Quantification of forest structure is important for developing a better understanding of how forest ecosystems function. Additionally, estimation of forest structural attributes, such as aboveground biomass (AGBM), is an important step in identifying the amount of carbon in terrestrial vegetation pools and is central to global carbon …


Journal: Remote Sensing Of Environment, Volume 79 (2-3): 305-319 (2002). DOI: 10.1016/s0034-4257(01)00281-4 Sites: CR-Lse

Comparative Measurements Of Carbon Dioxide Fluxes From Two Nearby Towers In A Central Amazonian Rainforest: The Manaus Lba Site
Araújo, A. C., Nobre, A. D., Kruijt, B., Elbers, J. A., Dallarosa, R., Stefani, P., von Randow, C., Manzi, A. O., Culf, A. D., Gash, J. H. C., Valentini, R., Kabat, P.

Forests around Manaus have staged the oldest and the longest forest-atmosphere CO2 exchange studies made anywhere in the Amazon. Since July 1999 the exchange of CO2, water, and energy, as well as weather variables, have been measured almost continuously over two forests, 11 km apart, in the Cuieiras reserve near Manaus, Brazil. This …


Journal: Journal Of Geophysical Research, Volume 107 (D20): (2002). DOI: 10.1029/2001JD000676 Sites: BR-Ma2

Evapotranspiration And Soil Water Content In A Scrub-Oak Woodland Under Carbon Dioxide Enrichment
Hungate, B. A., Reichstein, M., Dijkstra, P., Johnson, D., Hymus, G., Tenhunen, J. D., Hinkle, C., Drake, B. G.

Leaf conductance often decreases in response to elevated atmospheric CO2 concentration (Ca) potentially leading to changes in hydrology. We describe the hydrological responses of Florida scrub oak to elevated Ca during an eight-month period two years after Ca


Journal: Global Change Biology, Volume 8 (3): 289-298 (2002). DOI: 10.1046/j.1365-2486.2002.00468.x Sites: US-KS2