Publications

Publications Found: 1437

Assessment of winter fluxes of CO2 and CH4 in boreal forest soils of central Alaska estimated by the profile method and the chamber method: A diagnosis of methane emission and implications for the regional carbon budget
Kim, Y., Ueyama, M., Nakagawa, F., Tsunogai, U., Harazono, Y. and Tanaka, N.


Journal: Tellus, Volume 59B: 223-233 (2007). DOI: Sites: US-Uaf

What The Towers Don'T See At Night: Nocturnal Sap Flow In Trees And Shrubs At Two Ameriflux Sites In California
Fisher, J. B., Baldocchi, D. D., Misson, L., Dawson, T. E., Goldstein, A. H.

At the leaf scale, it is a long-held assumption that stomata close at night in the absence of light, causing transpiration to decrease to zero. Energy balance models and evapotranspiration equations often rely on net radiation as an upper bound, and some models reduce evapotranspiration to zero at night when there is no solar radiation. …


Journal: Tree Physiology, Volume 27 (4): 597-610 (2007). DOI: 10.1093/treephys/27.4.597 Sites: US-Ton

Allometry And Partitioning Of Above- And Belowground Tree Biomass In An Age-Sequence Of White Pine Forests
Peichl, M., Arain, M. A.

The allometry and partitioning of above- and belowground tree biomass was studied in an age-sequence of four eastern white pine (Pinus strobus L.) forests (2-, 15-, 30-, and 65-year-old) in southern Ontario, Canada. Biomass in each tree component, i.e. foliage, …


Journal: Forest Ecology And Management, Volume 253 (1-3): 68-80 (2007). DOI: 10.1016/j.foreco.2007.07.003 Sites: CA-TP1, CA-TP2, CA-TP3, CA-TP4

Postfire Carbon Pools And Fluxes In Semiarid Ponderosa Pine In Central Oregon
Irvine, J., Law, B. E., Hibbard, K. A.

Forest fire dramatically affects the carbon storage and underlying mechanisms that control the carbon balance of recovering ecosystems. In western North America where fire extent has increased in recent years, we measured carbon pools and fluxes in moderately and severely burned forest stands 2 years after a fire to determine the …


Journal: Global Change Biology, Volume 13 (8): 1748-1760 (2007). DOI: 10.1111/j.1365-2486.2007.01368.x Sites: US-Me1

Refining Light-Use Efficiency Calculations For A Deciduous Forest Canopy Using Simultaneous Tower-Based Carbon Flux And Radiometric Measurements
Jenkins, J., Richardson, A., Braswell, B., Ollinger, S., Hollinger, D., Smith, M.

The concept of light-use efficiency (LUE) is the underlying basis for estimating carbon exchange in many ecosystem models, especially those models that utilize remote sensing to constrain estimates of canopy photosynthesis. An understanding of the factors that control the efficiency with which forest canopies harvest available …


Journal: Agricultural And Forest Meteorology, Volume 143 (1-2): 64-79 (2007). DOI: 10.1016/j.agrformet.2006.11.008 Sites: US-Bar

Applications of NOAA/AVHRR and observed fluxes to estimate regional carbon fluxes over black spruce forests in Alaska.
Kitamoto, T., Ueyama, M., Harazono, Y., Iwata, T. and Yamamoto, S.


Journal: J. Agric. Meteorol., Volume 63: 171-183 (2007). DOI: Sites: US-Uaf

Factors Controlling CO2 Exchange On Timescales From Hourly To Decadal At Harvard Forest
Urbanski, S., Barford, C., Wofsy, S., Kucharik, C., Pyle, E., Budney, J., McKain, K., Fitzjarrald, D., Czikowsky, M., Munger, J. W.

We analyzed 13 years (1992−2004) of CO2 flux data, biometry, and meteorology from a mixed deciduous forest in central Massachusetts. Annual net uptake of CO2 ranged from 1.0 to …


Journal: Journal Of Geophysical Research, Volume 112 (G2): (2007). DOI: 10.1029/2006JG000293 Sites: US-Ha1

Temporal Dynamics And Spatial Variability In The Enhancement Of Canopy Leaf Area Under Elevated Atmospheric CO2
McCarthy, H. R., Oren, R., Finzi, A. C., Ellsworth, D. S., Kim, H., Johnsen, K. H., Millar, B.

Increased canopy leaf area (L) may lead to higher forest productivity and alter processes such as species dynamics and ecosystem mass and energy fluxes. Few CO2 enrichment studies have been conducted in closed canopy forests and none have shown a sustained enhancement of L. We reconstructed 8 years (1996–2003) …


Journal: Global Change Biology, Volume 13 (12): 2479-2497 (2007). DOI: 10.1111/j.1365-2486.2007.01455.x Sites: US-Dk3

Regional Carbon Fluxes From An Observationally Constrained Dynamic Ecosystem Model: Impacts Of Disturbance, CO2 Fertilization, And Heterogeneous Land Cover
Desai, A.R., Moorcroft, P.R., Bolstad, P.V., and Davis, K.J.

The Ecosystem Demography (ED) model was parameterized with ecological, forest inventory, and historical land use observations in an intensively managed, wetland-rich forested landscape in the upper midwest United States. Model results were evaluated against a regional network of eddy covariance flux towers and analyzed about the …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 112 (G1): n/a-n/a (2007). DOI: 10.1029/2006JG000264 Sites: US-PFa

Concentrations And Fluxes Of Dissolved Organic Carbon In An Age-Sequence Of White Pine Forests In Southern Ontario, Canada
Peichl, M., Moore, T. R., Arain, M. A., Dalva, M., Brodkey, D., McLaren, J.

We determined concentrations and fluxes of dissolved organic carbon (DOC) in precipitation, throughfall, forest floor and mineral soil leachates from June 2004 to May 2006 across an age-sequence (2-, 15-, 30-, and 65-year-old) of white pine (Pinus strobus L.) forests in southern Ontario, Canada. …


Journal: Biogeochemistry, Volume 86 (1): 1-17 (2007). DOI: 10.1007/s10533-007-9138-7 Sites: CA-TP3, CA-TP4