Publications

Publications Found: 1437

Estimating Components Of Forest Evapotranspiration: A Footprint Approach For Scaling Sap Flux Measurements
Oishi, A. C., Oren, R., Stoy, P. C.

Forest evapotranspiration (ET) estimates that include scaled sap flux measurements often underestimate eddy covariance (EC)-measured latent heat flux (LE). We investigated potential causes for this bias using 4 years of coupled sap flux and LE measurements from a mature oak-hickory forest in North Carolina, USA. We focused on accuracy …


Journal: Agricultural And Forest Meteorology, Volume 148 (11): 1719-1732 (2008). DOI: 10.1016/j.agrformet.2008.06.013 Sites: US-Dk2

Long-Term Impact Of A Stand-Replacing Fire On Ecosystem CO2 Exchange Of A Ponderosa Pine Forest
Dore, S., Kolb, T. E., Montes-Helu, M., Sullivan, B. W., Winslow, W. D., Hart, S. C., Kaye, J. P., Koch, G. W., Hungate, B. A.

Ponderosa pine (Pinus ponderosa) forests of the southwestern United States are a mosaic of stands where undisturbed forests are carbon sinks, and stands recovering from wildfires may be sources of carbon to the atmosphere for decades after the fire. However, the relative magnitude of these sinks and sources has never been …


Journal: Global Change Biology, Volume 14 (8): 1801-1820 (2008). DOI: 10.1111/j.1365-2486.2008.01613.x Sites: US-Fuf, US-Fwf

The 2007 Eastern Us Spring Freeze: Increased Cold Damage In A Warming World?
Gu, L., Hanson, P. J., Post, W. M., Kaiser, D. P., Yang, B., Nemani, R., Pallardy, S. G., Meyers, T.


Journal: Bioscience, Volume 58 (3): 253-262 (2008). DOI: 10.1641/B580311 Sites: US-MOz, US-WBW

Environmental And Biological Controls On Water And Energy Exchange In Florida Scrub Oak And Pine Flatwoods Ecosystems
Bracho, R., Powell, T. L., Dore, S., Li, J., Hinkle, C. R., Drake, B. G.

Scrub oak and pine flatwoods are two contrasting ecosystems common to the humid subtropical climate of Florida. Scrub oak forests are short in stature (<2 m) and occur on well-drained sandy soils, and pine flatwoods are much taller and occur in areas with poorly drained soils. Eddy covariance measurements were made from January …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 113 (G02004): n/a-n/a (2008). DOI: 10.1029/2007jg000469 Sites: US-KS1, US-KS2

Environmental And Biological Controls On Water And Energy Exchange In Florida Scrub Oak And Pine Flatwoods Ecosystems
Bracho, R., Powell, T. L., Dore, S., Li, J., Hinkle, C. R., Drake, B. G.

Scrub oak and pine flatwoods are two contrasting ecosystems common to the humid
subtropical climate of Florida. Scrub oak forests are short in stature (<2 m) and occur on
well-drained sandy soils, and pine flatwoods are much taller and occur in areas with
poorly drained soils. Eddy covariance measurements were made from January …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 113 (G2): n/a-n/a (2008). DOI: 10.1029/2007JG000469 Sites: US-KL2, US-KS1

Thinning Reduces Soil Carbon Dioxide But Not Methane Flux From Southwestern Usa Ponderosa Pine Forests
Sullivan, B., Kolb, T., Hart, S., Kaye, J., Dore, S., Montes-Helu, M.

Forest soils are important components of the global carbon cycle because they both store and release carbon. Carbon dioxide is released from soil to the atmosphere as a result of plant root and microbial respiration. Additionally, soils in dry forests are often sinks of methane from the atmosphere. Both carbon dioxide and methane …


Journal: Forest Ecology And Management, Volume 255 (12): 4047-4055 (2008). DOI: 10.1016/j.foreco.2008.03.051 Sites: US-Fmf, US-Fuf

Interannual Variation In Soil CO2 Efflux And The Response Of Root Respiration To Climate And Canopy Gas Exchange In Mature Ponderosa Pine
Irvine, J., Law, B. E., Martin, J. G., Vickers, D.

We examined a 6-year record of automated chamber-based soil CO2 efflux (Fs) and the underlying processes in relation to climate and canopy gas …


Journal: Global Change Biology, Volume 14 (12): 2848-2859 (2008). DOI: 10.1111/j.1365-2486.2008.01682.x Sites: US-Me2

Canopy Structure And Atmospheric Flows In Relation To The δ13c Of Respired Co2 In A Subalpine Coniferous Forest
Schaeffer, S. M., Anderson, D. E., Burns, S. P., Monson, R. K., Sun, J., Bowling, D. R.

Stable isotopes provide insight into ecosystem carbon cycling, plant physiological processes, atmospheric boundary-layer dynamics, and are useful for the integration of processes over multiple scales. Of particular interest is the carbon isotope content (δ13C) of nocturnal ecosystem-respired CO2 (δR). Recent advances in technology …


Journal: Agricultural And Forest Meteorology, Volume 148 (4): 592-605 (2008). DOI: 10.1016/j.agrformet.2007.11.003 Sites: US-NR1

Effect Of Remote Sensing Spatial Resolution On Interpreting Tower-Based Flux Observations
Li, F., Kustas, W. P., Anderson, M. C., Prueger, J. H., Scott, R. L.

Validation comparisons between satellite-based surface energy balance models and tower-based flux measurements over heterogeneous landscapes can be strongly influenced by the spatial resolution of the remote sensing inputs. In this paper, a two-source energy balance model developed to use thermal and visible /near-infrared remotely …


Journal: Remote Sensing Of Environment, Volume 112 (2): 337-349 (2008). DOI: 10.1016/j.rse.2006.11.032 Sites: US-Whs, US-Wkg

Factors Controlling The Interannual Variability In The Carbon Balance Of A Southern Boreal Black Spruce Forest
Krishnan, P., Black, T. A., Barr, A. G., Grant, N. J., Gaumont-Guay, D., Nesic, Z.

Factors controlling the seasonal and interannual variability of net ecosystem
productivity (FNEP), gross ecosystem photosynthesis (Pg), ecosystem respiration (Re) and
evapotranspiration (E) of a mature boreal black spruce forest in central Saskatchewan,
Canada were investigated using eight years (1999–2006) of continuous eddy …


Journal: Journal Of Geophysical Research, Volume 113 (D9): (2008). DOI: doi:10.1029/2007JD008965 Sites: CA-Obs