Publications

Publications Found: 1437

The Legacy Of Harvest And Fire On Ecosystem Carbon Storage In A North Temperate Forest
GOUGH, C. M., VOGEL, C. S., HARROLD, K. H., GEORGE, K., CURTIS, P. S.


Journal: Global Change Biology, Volume 13 (9): 1935-1949 (2007). DOI: 10.1111/j.1365-2486.2007.01406.x Sites: US-UMB

Spatiotemporal Variations In Growing Season Exchanges Of Co2, H2o, And Sensible Heat In Agricultural Fields Of The Southern Great Plains
Fischer, M. L., Billesbach, D. P., Berry, J. A., Riley, W. J., Torn, M. S.

Climate, vegetation cover, and management create finescale heterogeneity in unirrigated agricultural regions, with important but not well-quantified consequences for spatial and temporal variations in surface CO2, water, and heat fluxes. Eddy covariance fluxes were measured in seven agricultural fields—comprising winter wheat, …


Journal: Earth Interactions, Volume 11 (17): 1-21 (2007). DOI: 10.1175/EI231.1 Sites: US-ARM

A Long-Term Record Of Carbon Exchange In A Boreal Black Spruce Forest: Means, Responses To Interannual Variability, And Decadal Trends
Dunn, A. L., Barford, C. C., Wofsy, S. C., Goulden, M. L., Daube, B. C.

We present a decadal (1994–2004) record of carbon dioxide flux in a 160-year-old black spruce forest/veneer bog complex in central Manitoba, Canada. The ecosystem shifted …


Journal: Global Change Biology, Volume 13 (3): 577-590 (2007). DOI: 10.1111/j.1365-2486.2006.01221.x Sites: CA-Man

Use Of Digital Webcam Images To Track Spring Green-Up In A Deciduous Broadleaf Forest
Richardson, A. D., Jenkins, J. P., Braswell, B. H., Hollinger, D. Y., Ollinger, S. V., Smith, M.

Understanding relationships between canopy structure and the seasonal dynamics of photosynthetic uptake of CO2 by forest canopies requires improved knowledge of canopy phenology at eddy covariance flux tower sites. We investigated whether digital …


Journal: Oecologia, Volume 152 (2): 323-334 (2007). DOI: 10.1007/s00442-006-0657-z Sites: US-Bar

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

Modeling Evapotranspiration In Arctic Coastal Plain Ecosystems Using A Modified BIOME-BGC Model
Engstrom, R., Hope, A., Kwon, H., Harazono, Y., Mano, M., Oechel, W.

Modeling evapotranspiration (ET) in Arctic coastal plain ecosystems is challenging owing to the unique conditions present in this environment, including permafrost, nonvascular vegetation, and a large standing dead vegetation component. In this study the ecosystem process model, BIOME-BGC, was adapted to represent these unique conditions …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 111 (G02021): n/a-n/a (2006). DOI: 10.1029/2005JG000102 Sites: US-Brw