AmeriFlux Publications from the Community

Relationship Between Soil CO2 Concentrations And Forest-Floor CO2 Effluxes
Jassal, R., Black, A., Novak, M., Morgenstern, K., Nesic, Z., Gaumont-Guay, D.

To better understand the biotic and abiotic factors that control soil CO₂ efflux, we compared seasonal and diurnal variations in simultaneously measured forest-floor CO₂effluxes and soil CO₂ concentration profiles in a 54-year-old Douglas fir forest on the east coast of Vancouver Island. …

Journal: Agricultural And Forest Meteorology, Volume 130 (3-4): 176-192 (2005), ISBN . DOI: 10.1016/j.agrformet.2005.03.005 Sites: CA-Ca1

Respiratory Carbon Losses And The Carbon-Use Efficiency Of A Northern Hardwood Forest, 1999-2003
Curtis, P. S., Vogel, C. S., Gough, C. M., Schmid, H. P., Su, H. B., Bovard, B. D.

Quantitative assessment of carbon (C) storage by forests requires an understanding of climatic controls over respiratory C loss. Ecosystem respiration can be estimated biometrically as the sum (R_Σ) of soil (R_s), leaf (R_l) and wood (R_w) …

Journal: New Phytologist, Volume 167 (2): 437-456 (2005), ISBN . DOI: 10.1111/j.1469-8137.2005.01438.x Sites: US-UMB
Posted: January 31, 2017

Interacting Effects Of Temperature, Soil Moisture And Plant Biomass Production On Ecosystem Respiration In A Northern Temperate Grassland
Flanagan, L. B., Johnson, B. G.

Chamber measurements of total ecosystem respiration (TER) in a native Canadian grassland ecosystem were made during two study years with different precipitation. The growing season (April–September) precipitation during 2001 was less than one-half of the 30-year mean (1971–2000), while 2002 received almost double the normal growing …

Journal: Agricultural And Forest Meteorology, Volume 130 (3-4): 237-253 (2005), ISBN . DOI: 10.1016/j.agrformet.2005.04.002 Sites: CA-Let

Forest Soil Respiration Across Three Climatically Distinct Chronosequences In Oregon
Campbell, J., Law, B.

To assess the relative influence of edaphoclimatic gradients and stand replacing disturbance on the soil respiration of Oregon forests, we measured annual soil respiration at 36 independent forest plots arranged as three replicates of four age classes in …

Journal: Biogeochemistry, Volume 73 (1): 109-125 (2005), ISBN . DOI: 10.1007/s10533-004-5165-9 Sites: US-Me2, US-Me3, US-Me4, US-Me5

Processing Of Yield Map Data
Ping, J. L., Dobermann, A.

Yield maps reflect systematic and random sources of yield variation as well as numerous errors caused by the harvest and mapping procedures used. A general framework for processing of multi-year yield map data was developed. Steps included (1) raw data screening, …

Journal: Precision Agriculture, Volume 6 (2): 193-212 (2005), ISBN . DOI: 10.1007/s11119-005-1035-2 Sites: US-Ne1, US-Ne2, US-Ne3

Annual Soil Respiration In Broadleaf Forests Of Northern Wisconsin: Influence Of Moisture And Site Biological, Chemical, And Physical Characteristics
Martin, J. G., Bolstad, P. V.

Soil temperature and moisture influence soil respiration at a range of temporal and spatial scales. Although soil temperature and moisture may be seasonally correlated, intra and inter-annual variations in soil moisture do occur. There are few direct observations …

Journal: Biogeochemistry, Volume 73 (1): 149-182 (2005), ISBN . DOI: 10.1007/s10533-004-5166-8 Sites: US-WCr

Modeling Gross Primary Production Of An Evergreen Needleleaf Forest Using Modis And Climate Data
Xiao, X., Zhang, Q., Hollinger, D., Aber, J., Moore, B.

Forest canopies are composed of photosynthetically active vegetation (PAV, chloroplasts) and nonphotosynthetic vegetation (NPV, e.g., cell wall, vein, branch). The fraction of photosynthetically active radiation …

Journal: Ecological Applications, Volume 15 (3): 954-969 (2005), ISBN . DOI: 10.1890/04-0470 Sites: US-Ho1, US-Ho2, US-Ho3

Net Ecosystem Production In A Temperate Pine Plantation In Southeastern Canada
Arain, M. A., Restrepo-Coupe, N.

Eddy covariance measurements of carbon dioxide (CO₂) and water vapour fluxes were made from June 2002 to May 2003 over a 65-year-old temperate conifer plantation forest in southern Ontario, Canada. This site is part of a newly initiated long-term tower flux measurement …

Journal: Agricultural And Forest Meteorology, Volume 128 (3-4): 223-241 (2005), ISBN . DOI: 10.1016/j.agrformet.2004.10.003 Sites: CA-Ca1, CA-TP1, CA-TP2, CA-TP3, CA-TP4, US-Dk3, US-GLE, US-Ho1, US-Me4, US-Me5, US-NR1

A Comparison Of New Measurements Of Total Monoterpene Flux With Improved Measurements Of Speciated Monoterpene Flux
Lee, A., Schade, G. W., Holzinger, R., Goldstein, A. H.

Many monoterpenes have been identified in forest emissions using gas chromatography (GC). Until now, it has been impossible to determine whether all monoterpenes are appropriately measured using GC techniques. We used a proton transfer reaction mass spectrometer (PTR-MS) coupled with the eddy covariance (EC) technique to measure …

Journal: Atmospheric Chemistry And Physics, Volume 5 (2): 505-513 (2005), ISBN . DOI: 10.5194/acp-5-505-2005 Sites: US-Blo

Importance Of Changing CO2, Temperature, Precipitation, And Ozone On Carbon And Water Cycles Of An Upland-Oak Forest: Incorporating Experimental Results Into Model Simulations
Hanson, P. J., Wullschleger, S. D., Norby, R. J., Tschaplinski, T. J., Gunderson, C. A.

Observed responses of upland-oak vegetation of the eastern deciduous hardwood forest to changing CO₂, temperature, precipitation and tropospheric ozone (O₃) were derived from field studies and interpreted with a stand-level model for an 11-year range of environmental variation upon which scenarios of future …

Journal: Global Change Biology, Volume 11 (9): 1402-1423 (2005), ISBN . DOI: 10.1111/j.1365-2486.2005.00991.x Sites: US-WBW

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