Publications

Publications Found: 1437

Carbon Dioxide And Energy Fluxes From A Boreal Mixedwood Forest Ecosystem In Ontario, Canada
McCaughey, J., Pejam, M., Arain, M., Cameron, D.

A long-term flux measurement station has been established in a 74-year-old mixedwood forest ecosystem, located approximately 80 km west of Timmins in northern Ontario, as part of the Fluxnet-Canada Research Network (FCRN). Measurements of energy, water vapour, and carbon …


Journal: Agricultural And Forest Meteorology, Volume 140 (1-4): 79-96 (2006). DOI: 10.1016/j.agrformet.2006.08.010 Sites: CA-Gro

Upscaling Fluxes From Tower To Landscape: Overlaying Flux Footprints On High-Resolution (IKONOS) Images Of Vegetation Cover
Kim, J., Guo, Q., Baldocchi, D., Leclerc, M., Xu, L., Schmid, H.

In this paper, we describe the process of assessing tower footprint climatology, spatial variability of site vegetation density based on satellite image analysis, and sensor location bias in scaling up to 1 km × 1 km patch. Three flat sites with different vegetation …


Journal: Agricultural And Forest Meteorology, Volume 136 (3-4): 132-146 (2006). DOI: 10.1016/j.agrformet.2004.11.015 Sites: US-SP1, US-Ton, US-Var

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). DOI: 10.1111/j.1365-2486.2006.01158.x Sites: US-Dk3

Nocturnal Cold Air Drainage And Pooling In A Tropical Forest
Goulden, M. L., Miller, S. D., da Rocha, H. R.

The usefulness of eddy covariance for understanding terrestrial carbon exchange has been hampered by uncertainty over the magnitude and causes of a systematic underestimation of CO2 efflux on calm nights. We combined in situ measurements of the temperature, wind and CO2 profile with nocturnal Land Surface Temperature …


Journal: Journal Of Geophysical Research, Volume 111 (D8): n/a-n/a (2006). DOI: 10.1029/2005jd006037 Sites: BR-Sa3

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: US-CMW, US-LS1, US-LS2

Temporal and spatial differences of methane flux at arctic tundra in Alaska
Harazono Y, Mano M, Miyata A, Yoshimoto M, Zulueta RC, Vourlitis V, Kwon H, Oechel W


Journal: emoirs of National Institute of Polar Research. Special issue, Volume 59: 79-95 (2006). DOI: Sites: US-Cms, US-HVs, US-Sag

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). DOI: 10.1016/j.agrformet.2006.03.018 Sites: CA-Ca1, CA-Ca2, CA-Ca3

Impact Of Changing Soil Moisture Distribution On Net Ecosystem Productivity Of A Boreal Aspen Forest During And Following Drought
Krishnan, P., Black, T. A., Grant, N. J., Barr, A. G., Hogg, E. (., Jassal, R. S., Morgenstern, K.

The interannual and seasonal variability of gross ecosystem photosynthesis (P), ecosystem respiration (R) and evapotranspiration
(E), and their relationships to environmental factors were used to explain changes in net ecosystem productivity (FNEP) at the
onset of, during, and following a 3-year-long (2001–2003) drought in a …


Journal: Agricultural And Forest Meteorology, Volume 139 (3-4): 208-223 (2006). DOI: DOI:10.1016/j.agrformet.2006.07.002 Sites: CA-Oas

Seasonality Of Photosynthetic Parameters In A Multi-Specific And Vertically Complex Forest Ecosystem In The Sierra Nevada Of California
Misson, L., Tu, K. P., Boniello, R. A., Goldstein, A. H.

Understanding seasonal variations of photosynthetic parameters is critical for accurate modeling of carbon dioxide (CO2) uptake by ecosystems. Maximum carboxylation velocity (Vcmax), maximum rate of electron transport (Jmax), leaf respiration in the light (Rday), …


Journal: Tree Physiology, Volume 26 (6): 729-741 (2006). DOI: 10.1093/treephys/26.6.729 Sites: US-Blo

Environmental Control Of Net Ecosystem Co2 Exchange In A Treed, Moderately Rich Fen In Northern Alberta
Syed, K. H., Flanagan, L. B., Carlson, P. J., Glenn, A. J., Van Gaalen, K. E.

Peatlands cover about 21% of the landscape and contain about 80% of the soil carbon stock in western Canada. However, the current rates of carbon accumulation and the environmental controls on ecosystem photosynthesis and respiration in peatland ecosystems are poorly understood. …


Journal: Agricultural And Forest Meteorology, Volume 140 (1-4): 97-114 (2006). DOI: 10.1016/j.agrformet.2006.03.022 Sites: CA-WP1