Publications

Publications Found: 1371
Integration Of CO2 Flux And Remotely-Sensed Data For Primary Production And Ecosystem Respiration Analyses In The Northern Great Plains: Potential For Quantitative Spatial Extrapolation
Gilmanov, T. G., Tieszen, L. L., Wylie, B. K., Flanagan, L. B., Frank, A. B., Haferkamp, M. R., Meyers, T. P., Morgan, J. A.

Aim  Extrapolation of tower CO2 fluxes will be greatly facilitated if robust relationships between flux components and remotely sensed factors are established. Long-term measurements at five Northern Great Plains locations were used to obtain relationships between CO2 fluxes and photosynthetically active …


Journal: Global Ecology And Biogeography, Volume 14 (3): 271-292 (2005), ISBN . DOI: 10.1111/j.1466-822x.2005.00151.x Sites: CA-Let, US-Bkg

Spatial Analysis Of Growing Season Length Control Over Net Ecosystem Exchange
Churkina, G., Schimel, D., Braswell, B. H., Xiao, X.

Using data from 28 flux measurement sites, we performed an analysis of the relationship between annual net ecosystem exchange (NEE) and the length of the carbon uptake period …


Journal: Global Change Biology, Volume 11 (10): 1777-1787 (2005), ISBN . DOI: 10.1111/j.1365-2486.2005.001012.x Sites: US-NR1

Observations Of Oxidation Products Above A Forest Imply Biogenic Emissions Of Very Reactive Compounds
Holzinger, R., Lee, A., Paw, K. T., Goldstein, A. H.

Vertical gradients of mixing ratios of volatile organic compounds have been measured in a Ponderosa pine forest in Central California (38.90° N, 120.63° W, 1315m). These measurements reveal large quantities of previously unreported oxidation products of short lived biogenic precursors. The emission of biogenic precursors must be …


Journal: Atmospheric Chemistry And Physics, Volume 5 (1): 67-75 (2005), ISBN . DOI: 10.5194/acp-5-67-2005 Sites: US-Blo

The Influence Of Light Environment On Photosynthesis And Basal Methylbutenol Emission From Pinus Ponderosa
Gray, D. W., Goldstein, A. H., Lerdau, M. T.

Methylbutenol is a 5-carbon alcohol that is produced and emitted by several species of pine in western North America, and may have important impacts on the tropospheric chemistry …


Journal: Plant, Cell And Environment, Volume 28 (12): 1463-1474 (2005), ISBN . DOI: 10.1111/j.1365-3040.2005.01382.x Sites: US-Blo

An Analysis Of Soil Respiration Across Northern Hemisphere Temperate Ecosystems
Hibbard, K. A., Law, B. E., Reichstein, M., Sulzman, J.

Over two-thirds of terrestrial carbon is stored belowground and a significant amount of atmospheric CO2 is respired by roots and microbes in soils. For this analysis, soil respiration (Rs) data were assembled from 31 AmeriFlux and CarboEurope sites representing deciduous broadleaf, evergreen needleleaf, grasslands, mixed …


Journal: Biogeochemistry, Volume 73 (1): 29-70 (2005), ISBN . DOI: 10.1007/s10533-004-2946-0 Sites: US-Dk3, US-Ho1, US-Me2, US-Me4, US-Me5, US-NR1, US-Ton, US-UMB, US-WCr

Effects Of Climate Variability On Carbon Sequestration Among Adjacent Wet Sedge Tundra And Moist Tussock Tundra Ecosystems
Kwon, H.J., Oechel, W.C., Zulueta, R.C., Hastings, S.J.

Temporal and spatial variability in the Arctic introduces considerable uncertainty in the estimation of the current carbon budget and Arctic ecosystem response to climate change. Few representative measurements are available for land-surface parameterization of the Arctic tundra in regional and global climate models. In this study, …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 111 (G3): 2005-2012 (2005), ISBN . DOI: 10.1029/2005JG000036 Sites: US-Atq, US-Brw

Evapotranspiration Models Compared On A Sierra Nevada Forest Ecosystem
Fisher, J. B., DeBiase, T. A., Qi, Y., Xu, M., Goldstein, A. H.

Evapotranspiration, a major component in terrestrial water balance and net primary productivity models, is difficult to measure and predict. This study compared five models of potential evapotranspiration (PET) applied to a ponderosa pine forest ecosystem at an AmeriFlux …


Journal: Environmental Modelling & Software, Volume 20 (6): 783-796 (2005), ISBN . DOI: 10.1016/j.envsoft.2004.04.009 Sites: US-Blo

Effects Of Elevated Atmospheric CO2 On Soil Microbial Biomass, Activity, And Diversity In A Chaparral Ecosystem
Lipson, D. A., Wilson, R. F., Oechel, W. C.

This study reports the effects of long-term elevated atmospheric CO2 on root production and microbial activity, biomass, and diversity in a chaparral ecosystem in southern California. The free air CO2 enrichment (FACE) ring was located in a stand dominated by the woody shrub Adenostoma fasciculatum. …


Journal: Applied And Environmental Microbiology, Volume 71 (12): 8573-8580 (2005), ISBN . DOI: 10.1128/aem.71.12.8573-8580.2005 Sites: US-SO2, US-SO3

Predicting The Onset Of Net Carbon Uptake By Deciduous Forests With Soil Temperature And Climate Data: A Synthesis Of FLUXNET Data
Baldocchi, D. D., Black, T. A., Curtis, P. S., Falge, E., Fuentes, J. D., Granier, A., Gu, L., Knohl, A., Lee, X., Pilegaard, K., Schmid, H. P., Valentini, R., Wilson, K., Wofsy, S., Xu, L., Yamamoto, S.

We tested the hypothesis that the date of the onset of net carbon uptake by temperate deciduous forest canopies corresponds with the time when the mean daily soil temperature equals the mean annual air temperature. The hypothesis was tested using over 30 …


Journal: International Journal Of Biometeorology, Volume 49 (6): 377-387 (2005), ISBN . DOI: 10.1007/s00484-005-0256-4 Sites: US-MMS

Climatic Influences On Net Ecosystem CO2 Exchange During The Transition From Wintertime Carbon Source To Springtime Carbon Sink In A High-Elevation, Subalpine Forest
Monson, R. K., Sparks, J. P., Rosenstiel, T. N., Scott-Denton, L. E., Huxman, T. E., Harley, P. C., Turnipseed, A. A., Burns, S. P., Backlund, B., Hu, J.

The transition between wintertime net carbon loss and springtime net carbon assimilation has an important role in controlling the annual rate of carbon uptake in coniferous forest ecosystems. We studied the contributions of springtime carbon assimilation …


Journal: Oecologia, Volume 146 (1): 130-147 (2005), ISBN . DOI: 10.1007/s00442-005-0169-2 Sites: US-NR1