Publications

Publications Found: 1437

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). DOI: 10.1073/pnas.0609448103 Sites: US-Dk3

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). DOI: 10.1080/02786820600631896 Sites: US-Blo

Separating The Effects Of Climate And Vegetation On Evapotranspiration Along A Successional Chronosequence In The Southeastern US
Stoy, P. C., Katul, G. G., Siqueira, M. B., Juang, J., Novick, K. A., Mccarthy, H. R., Christopher Oishi, A., Uebelherr, J. M., Kim, H., Oren, R.

We combined Eddy-covariance measurements with a linear perturbation analysis to isolate the relative contribution of physical and biological drivers on evapotranspiration (ET) …


Journal: Global Change Biology, Volume 12 (11): 2115-2135 (2006). DOI: 10.1111/j.1365-2486.2006.01244.x Sites: US-Dk3

Ecohydrological Impacts Of Woody-Plant Encroachment: Seasonal Patterns Of Water And Carbon Dioxide Exchange Within A Semiarid Riparian Environment
SCOTT, R. L., HUXMAN, T. E., WILLIAMS, D. G., GOODRICH, D. C.

Across many dryland regions, historically grass‐dominated ecosystems have been encroached upon by woody‐plant species. In this paper, we compare ecosystem water and carbon dioxide (CO2) fluxes over a grassland, a grassland–shrubland mosaic, and a fully developed woodland to evaluate potential consequences of woody‐plant encroachment …


Journal: Global Change Biology, Volume 12 (2): 311-324 (2006). DOI: 10.1111/j.1365-2486.2005.01093.x Sites:

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). 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

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). DOI: 10.1007/s00442-006-0356-9 Sites: US-Ha1

Evaluation Of Remote Sensing Based Terrestrial Productivity From MODIS Using Regional Tower Eddy Flux Network Observations
F. A. Heinsch, M. S. Zhao, S. W. Running, J. S. Kimball, R. R. Nemani, K. J. Davis, P. V. Bolstad, B. D. Cook, A. R. Desai, D. M. Ricciuto, B. E. Law, W. C. Oechel, H. Kwon, H. Luo, S. C. Wofsy, A. L. Dunn, J. W. Munger, D. D. Baldocchi, L. Xu, D. Y. Hollinger, A. D. Richardson, P. C. Stoy, M. B. S. Siqueira, R. K. Monson, S. P. Burns, L. B. Flanagan

The Moderate Resolution Spectroradiometer (MODIS) sensor has provided near real-time estimates of gross primary production (GPP) since March 2000. We compare four years (2000 to 2003) of satellite-based calculations of GPP with tower eddy CO2 flux-based estimates across diverse land cover types and climate regimes. We …


Journal: IEEE Transactions On Geoscience And Remote Sensing, Volume 44 (7): 1908-1925 (2006). DOI: 10.1109/tgrs.2005.853936 Sites: US-Me4, US-Me5

Late-Summer Carbon Fluxes From Canadian Forests And Peatlands Along An East-–West Continental Transect
Coursolle, C., Margolis, H. A., Barr, A. G., Black, T. A., Amiro, B. D., McCaughey, J. H., Flanagan, L. B., Lafleur, P. M., Roulet, N. T., Bourque, C. P., Arain, M. A., Wofsy, S. C., Dunn, A., Morgenstern, K., Orchansky, A. L., Bernier, P. Y., Chen, J. M., Kidston, J., Saigusa, N., Hedstrom, N.

Net ecosystem productivity (NEP) during August 2003 was measured by using eddy covariance above 17 forest and 3 peatland sites along an east–west continental-scale transect in …


Journal: Canadian Journal Of Forest Research, Volume 36 (3): 783-800 (2006). DOI: 10.1139/x05-270 Sites: CA-Ca1, CA-Ca2, CA-Ca3, CA-Let, CA-Man, CA-SJ2, CA-TP1, CA-TP3, CA-TP4, CA-WP1

A Distinct Seasonal Pattern Of The Ratio Of Soil Respiration To Total Ecosystem Respiration In A Spruce-Dominated Forest
Davidson, E. A., Richardson, A. D., Savage, K. E., Hollinger, D. Y.

Annual budgets and fitted temperature response curves for soil respiration and ecosystem respiration provide useful information for partitioning annual carbon budgets of ecosystems, …


Journal: Global Change Biology, Volume 12 (2): 230-239 (2006). DOI: 10.1111/j.1365-2486.2005.01062.x Sites: US-Ho1, US-Ho2, US-Ho3

Combining Meteorology, Eddy Fluxes, Isotope Measurements, And Modeling To Understand Environmental Controls Of Carbon Isotope Discrimination At The Canopy Scale
Aranibar, J. N., Berry, J. A., Riley, W. J., Pataki, D. E., Law, B. E., Ehleringer, J. R.

Estimates of terrestrial carbon isotope discrimination are useful to quantify the terrestrial carbon sink. Carbon isotope discrimination by terrestrial ecosystems may vary on seasonal and interannual time frames, because it is affected by processes (e.g. photosynthesis, stomatal conductance, and respiration) that respond to variable …


Journal: Global Change Biology, Volume 12 (4): 710-730 (2006). DOI: 10.1111/j.1365-2486.2006.01121.x Sites: US-Me4