AmeriFlux Publications from the Community

Contrasting Soil Respiration In Young And Old-Growth Ponderosa Pine Forests
Irvine, J., Law, B. E.

Three years of fully automated and manual measurements of soil CO₂ efflux, soil moisture and temperature were used to explore the diel, seasonal and inter-annual patterns of soil efflux in an old-growth (250-year-old, O site) and recently regenerating (14-year-old, Y site) ponderosa pine forest in central …

Journal: Global Change Biology, Volume 8 (12): 1183-1194 (2002), ISBN . DOI: 10.1046/j.1365-2486.2002.00544.x Sites: US-Me4, US-Me5

Effects Of Spatial Variability In Light Use Efficiency On Satellite-Based NPP Monitoring
Turner, D. P., Gower, S. T., Cohen, W. B., Gregory, M., Maiersperger, T. K.

Light use efficiency (LUE) algorithms are a potentially effective approach to monitoring global net primary production (NPP) using satellite-borne sensors such as the Moderate Resolution Imaging Spectroradiometer (MODIS). However, these algorithms are applied at relatively coarse spatial resolutions (≥1 km), which may subsume significant …

Journal: Remote Sensing Of Environment, Volume 80 (3): 397-405 (2002), ISBN . DOI: 10.1016/s0034-4257(01)00319-4 Sites: US-Bo1

Inversion Of Net Ecosystem CO2 Flux Measurements For Estimation Of Canopy PAR Absorption
Hanan, N. P., Burba, G., Verma, S. B., Berry, J. A., Suyker, A., Walter-Shea, E. A.

The fractional absorption of photosynthetically active radiation (f_PAR) is frequently a key variable in models describing terrestrial ecosystem–atmosphere interactions, carbon uptake, growth and biogeochemistry. We present a novel approach to the estimation of the fraction of incident photosynthetically active …

Journal: Global Change Biology, Volume 8 (6): 563-574 (2002), ISBN . DOI: 10.1046/j.1365-2486.2002.00488.x Sites: US-Pon, US-Shd

Carbon Sequestration In A High-Elevation, Subalpine Forest
Monson, R. K., Turnipseed, A. A., Sparks, J. P., Harley, P. C., Scott-Denton, L. E., Sparks, K., Huxman, T. E.

We studied net ecosystem CO₂ exchange (NEE) dynamics in a high-elevation, subalpine forest in Colorado, USA, over a two-year period. Annual carbon sequestration for the forest was 6.71 mol C m⁻²(80.5 g C m⁻²) for the year between November 1, 1998 and October 31, 1999, and 4.80 mol C m⁻²(57.6 g C m⁻²) …

Journal: Global Change Biology, Volume 8 (5): 459-478 (2002), ISBN . DOI: 10.1046/j.1365-2486.2002.00480.x Sites: US-NR1

Comparing The Carbon Budgets Of Boreal And Temperate Deciduous Forest Stands
Barr, A. G., Griffis, T. J., Black, T. A., Lee, X., Staebler, R. M., Fuentes, J. D., Chen, Z., Morgenstern, K.

Boreal and temperate deciduous forests at northern mid-latitudes play an important role in the global carbon cycle. We analyze 3 years (1996-1998) of eddy-covariance carbon dioxide flux measurements from two contrasting deciduous forest ecosystems in the boreal and temperate regions of central Canada. The two forest stands have similar …

Journal: Canadian Journal Of Forest Research, Volume 32 (5): 813-822 (2002), ISBN . DOI: 10.1139/x01-131 Sites: CA-Cbo, CA-Oas

Biometric And Eddy-Covariance Based Estimates Of Annual Carbon Storage In Five Eastern North American Deciduous Forests
Curtis, P. S., Hanson, P. J., Bolstad, P., Barford, C., Randolph, J., Schmid, H., Wilson, K. B.

Quantifying net carbon (C) storage by forests is a necessary step in the validation of carbon sequestration estimates and in assessing the possible role of these ecosystems in offsetting fossil fuel emissions. In eastern North America, five sites were established in deciduous …

Journal: Agricultural And Forest Meteorology, Volume 113 (1-4): 3-19 (2002), ISBN . DOI: 10.1016/s0168-1923(02)00099-0 Sites: US-Ha1, US-MMS, US-UMB, US-WCr

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), ISBN . DOI: 10.2134/jeq2002.1088 Sites: US-Blo

Elevated Atmospheric CO2 Lowers Herbivore Abundance, But Increases Leaf Abscission Rates
Stiling, P., Cattell, M., Moon, D. C., Rossi, A., Hungate, B. A., Hymus, G., Drake, B.

Increased levels of atmospheric carbon dioxide (CO₂) are likely to affect the trophic relationships that exist between plants, their herbivores and the herbivores’ …

Journal: Global Change Biology, Volume 8 (7): 658-667 (2002), ISBN . DOI: 10.1046/j.1365-2486.2002.00501.x Sites: US-KS2

An Initial Intercomparison Of Micrometeorological And Ecological Inventory Estimates Of Carbon Exchange In A Mid-Latitude Deciduous Forest
Ehman, J. L., Schmid, H. P., Grimmond, C. S., Randolph, J. C., Hanson, P. J., Wayson, C. A., Cropley, F. D.

The role of mid-latitude forests in the sequestration of carbon (C) is of interest to an increasing number of scientists and policy-makers alike. Net CO₂ exchange …

Journal: Global Change Biology, Volume 8 (6): 575-589 (2002), ISBN . DOI: 10.1046/j.1365-2486.2002.00492.x Sites: US-MMS

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), ISBN . DOI: 10.1093/treephys/22.14.993 Sites: CA-Man

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