Publications

Publications Found: 1373
Leaf Area Index Measurements At Fluxnet-Canada Forest Sites
Chen, J. M., Govind, A., Sonnentag, O., Zhang, Y., Barr, A., Amiro, B.

Leaf area index (LAI) measurements made at 17 forest sites of the Fluxnet Canada Research Network are reported here. In addition to LAI, we also report other major structural parameters including the effective LAI, element clumping index, needle-to-shoot area ratio, and …


Journal: Agricultural And Forest Meteorology, Volume 140 (1-4): 257-268 (2006), ISBN . DOI: 10.1016/j.agrformet.2006.08.005 Sites: CA-Ca2, CA-Ca3, CA-Gro, CA-Na1, CA-Oas, CA-Ojp, CA-Qfo, CA-SJ1, CA-SJ3, CA-TP2, CA-TP3, CA-TP4

Ecosystem-Level CO2 Fluxes From A Boreal Cutover In Eastern Canada Before And After Scarification
Giasson, M., Coursolle, C., Margolis, H. A.

Carbon (C) cycling in the boreal forest is driven by both natural and human disturbances, but there is little information on the impact of forest management practices on ecosystem-level C balance. We evaluated the C balance of a recently harvested boreal site in eastern …


Journal: Agricultural And Forest Meteorology, Volume 140 (1-4): 23-40 (2006), ISBN . DOI: 10.1016/j.agrformet.2006.08.001 Sites: CA-Qcu

Influences Of Biomass Heat And Biochemical Energy Storages On The Land Surface Fluxes And Radiative Temperature
Gu, L., Meyers, T., Pallardy, S. G., Hanson, P. J., Yang, B., Heuer, M., Hosman, K. P., Liu, Q., Riggs, J. S., Sluss, D., Wullschleger, S. D.

The interest of this study was to develop an initial assessment on the potential importance of biomass heat and biochemical energy storages for land-atmosphere interactions, an issue that has been largely neglected so far. We conducted flux tower observations and model simulations at a temperate deciduous forest site in central Missouri …


Journal: Journal Of Geophysical Research: Atmospheres, Volume 112 (D2): n/a-n/a (2006), ISBN . DOI: 10.1029/2006jd007425 Sites: US-MOz

Canopy Leaf Area Constrains [Co2]-Induced Enhancement Of Productivity And Partitioning Among Aboveground Carbon Pools
McCarthy, H. R., Oren, R., Finzi, A. C., Johnsen, K. H.

Net primary productivity (NPP) is enhanced under future atmospheric [CO2] in temperate forests representing a broad range of productivity. Yet questions remain in regard to how elevated [CO2]-induced NPP enhancement may be affected by climatic variations and limiting nutrient resources, as well as how this additional …


Journal: Proceedings Of The National Academy Of Sciences, Volume 103 (51): 19356-19361 (2006), ISBN . DOI: 10.1073/pnas.0609448103 Sites: US-Dk3

Multiscale Model Intercomparisons Of CO2 And H2O Exchange Rates In A Maturing Southeastern US Pine Forest
Siqueira, M. B., Katul, G. G., Sampson, D. A., Stoy, P. C., Juang, J., Mccarthy, H. R., Oren, R.

We compared four existing process-based stand-level models of varying complexity (physiological principles in predicting growth, photosynthesis and evapotranspiration, biogeochemical …


Journal: Global Change Biology, Volume 12 (7): 1189-1207 (2006), ISBN . DOI: 10.1111/j.1365-2486.2006.01158.x Sites: US-Dk2

Comparison Of Ecosystem Water-Use Efficiency Among Douglas-Fir Forest, Aspen Forest And Grassland Using Eddy Covariance And Carbon Isotope Techniques
Ponton, S., Flanagan, L. B., Alstad, K. P., Johnson, B. G., Morgenstern, K., Kljun, N., Black, T. A., Barr, A. G.

Comparisons were made among Douglas-fir forest, aspen (broad leaf deciduous) forest and wheatgrass (C3) grassland for ecosystem-level water-use efficiency (WUE). WUE was defined as the ratio of photosynthetic CO2 assimilation rate and evapotranspiration (ET) rate. The ET data measured by eddy covariance were …


Journal: Global Change Biology, Volume 12 (2): 294-310 (2006), ISBN . DOI: 10.1111/j.1365-2486.2005.01103.x Sites: CA-Ca1, CA-Let, CA-Oas

Carbon Dioxide Fluxes In Coastal Douglas-Fir Stands At Different Stages Of Development After Clearcut Harvesting
Humphreys, E. R., Black, T. A., Morgenstern, K., Cai, T., Drewitt, G. B., Nesic, Z., Trofymow, J.

Forests play a significant role in the global carbon (C) cycle. Variability in weather, species, stand age, and current and past disturbances are some of the factors that control stand-level C dynamics. This study examines the relative roles of stand age and associated structural …


Journal: Agricultural And Forest Meteorology, Volume 140 (1-4): 6-22 (2006), ISBN . DOI: 10.1016/j.agrformet.2006.03.018 Sites: CA-Ca1, CA-Ca2, CA-Ca3

Woody Debris Contribution To The Carbon Budget Of Selectively Logged And Maturing Mid-Latitude Forests
Liu, W. H., Bryant, D. M., Hutyra, L. R., Saleska, S. R., Hammond-Pyle, E., Curran, D., Wofsy, S. C.

Woody debris (WD) is an important component of forest C budgets, both as a C reservoir and source of CO2 to the atmosphere. We used an infrared gas analyzer and closed dynamic chamber to measure CO2 efflux from downed coarse WD (CWD; diameter≥7.5 cm) and fine WD (FWD; 7.5 cm>diameter≥2 cm) to assess …


Journal: Oecologia, Volume 148 (1): 108-117 (2006), ISBN . DOI: 10.1007/s00442-006-0356-9 Sites: US-Ha1

Vertical Partitioning Of CO2 Production Within A Temperate Forest Soil
Davidson, E. A., Savage, K. E., Trumbore, S. E., Borken, W.

The major driving factors of soil CO2 production – substrate supply, temperature, and water content – vary vertically within the soil profile, with the greatest …


Journal: Global Change Biology, Volume 12 (6): 944-956 (2006), ISBN . DOI: 10.1111/j.1365-2486.2005.01142.x Sites: US-LPH

Characteristics Of Fine Particle Growth Events Observed Above A Forested Ecosystem In The Sierra Nevada Mountains Of California
Lunden, M. M., Black, D. R., McKay, M., Revzan, K. L., Goldstein, A. H., Brown, N. J.

Atmospheric aerosols from natural and anthropogenic processes have both primary and secondary origins, and can influence human health, visibility, and climate. One key process affecting atmospheric concentrations of aerosols is the formation of new particles and their subsequent growth to larger particle sizes. A field study was …


Journal: Aerosol Science And Technology, Volume 40 (5): 373-388 (2006), ISBN . DOI: 10.1080/02786820600631896 Sites: US-Blo