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Saugier, B., Granier, A., Pontailler, J. Y., Dufrene, E., Baldocchi, D. D.
Three independent methods were used to evaluate transpiration of a boreal forest: the branch bag, sap flow and eddy covariance methods. The branch bag method encloses several thousand needles and gives a continuous record of branch transpiration. The sap flow method provides a continuous record of sap velocity and an estimate of …
Journal: Tree Physiology, Volume 17 (8-9): 511-519 (1997), ISBN . DOI: 10.1093/treephys/17.8-9.511 Sites: CA-Obs
Blanken, P. D., Black, T. A., Yang, P. C., Neumann, H. H., Nesic, Z., Staebler, R., den Hartog, G., Novak, M. D., Lee, X.
The energy balance components were measured throughout most of 1994 in and above a southern boreal aspen (Populus tremuloides Michx.) forest (53.629°N 106.200°W) with a hazelnut (Corylus cornuta Marsh.) understory as part of the Boreal Ecosystem-Atmosphere Study. The turbulent fluxes were measured at both levels …
Journal: Journal Of Geophysical Research: Atmospheres, Volume 102 (D24): 28915-28927 (1997), ISBN . DOI: 10.1029/97jd00193 Sites: CA-Oas
Lavigne, M. B., Ryan, M. G.
We measured stem respiration rates during and after the 1994 growing season of three common boreal tree species at sites near the northern and southern boundaries of the closed-canopy boreal forest in central Canada. The growth respiration coefficient (rg; carbon efflux per μmole of carbon incorporated in structural …
Journal: Tree Physiology, Volume 17 (8-9): 543-551 (1997), ISBN . DOI: 10.1093/treephys/17.8-9.543 Sites: CA-Man, CA-Oas, CA-Obs, CA-Ojp
Jarvis, P. G., Massheder, J. M., Hale, S. E., Moncrieff, J. B., Rayment, M., Scott, S. L.
Measurements of the fluxes of latent heat λE, sensible heat H, and CO2 were made by eddy covariance in a boreal black spruce forest as part of the Boreal Ecosystem-Atmosphere Study (BOREAS) for 120 days through the growing season in 1994. BOREAS is a multiscale study in which satellite, airborne, stand-scale, …
Journal: Journal Of Geophysical Research: Atmospheres, Volume 102 (D24): 28953-28966 (1997), ISBN . DOI: 10.1029/97jd01176 Sites: CA-Obs
Margolis, H. A., Ryan, M. G.
Journal: Tree Physiology, Volume 17 (8-9): 491-499 (1997), ISBN . DOI: 10.1093/treephys/17.8-9.491 Sites: CA-Man, CA-Oas, CA-Obs, CA-Ojp
Gower, S. T., Vogel, J. G., Norman, J. M., Kucharik, C. J., Steele, S. J., Stow, T. K.
The objectives of this study are to (1) characterize the carbon (C) content, leaf area index, and aboveground net primary production (ANPP) for mature aspen, black spruce, and young and mature jack pine stands …
Journal: Journal Of Geophysical Research: Atmospheres, Volume 102 (D24): 29029-29041 (1997), ISBN . DOI: 10.1029/97jd02317 Sites: CA-Man
Brooks, J. R., Flanagan, L. B., Varney, G. T., Ehleringer, J. R.
We compared vertical gradients in leaf gas exchange, CO2 concentrations, and refixation of respired CO2 in stands of Populus tremuloides Michx., Pinus banksiana Lamb. and Picea mariana (Mill.) B.S.P. at the northern and southern boundaries of the central Canadian boreal forest. Midsummer …
Journal: Tree Physiology, Volume 17 (1): 1-12 (1997), ISBN . DOI: 10.1093/treephys/17.1.1 Sites: CA-Man, CA-Oas, CA-Obs, CA-Ojp
Hogg, E. H., Hurdle, P. A.
We monitored sap flow and estimated diurnal changes in transpiration rates of two trembling aspen (Populus tremuloides Michx.) stands, located in the southern boreal forest and aspen parkland of Saskatchewan, Canada. In both stands during the peak growing season (June and July), sap flow during the day (0700–1700 h local …
Journal: Tree Physiology, Volume 17 (8-9): 501-509 (1997), ISBN . DOI: 10.1093/treephys/17.8-9.501 Sites: CA-Oas
Moore, K. E., Fitzjarrald, D. R., Sakai, R. K., Goulden, M. L., Munger, J. W., Wofsy, S. C.
Temperate deciduous forests exhibit dramatic seasonal changes in surface exchange properties following on the seasonal changes in leaf area index. Nearly continuous measurements of turbulent and radiative fluxes above and below the canopy of a red oak forest in central Massachusetts have been ongoing since the summer of 1991. Several …
Journal: Journal Of Applied Meteorology, Volume 35 (1): 122-134 (1996), ISBN . DOI: 10.1175/1520-0450(1996)035<0122:SVIRAT>2.0.CO;2 Sites: US-Ha1
Goulden, M. L., Munger, J. W., Fan, S., Daube, B. C., Wofsy, S. C.
The turbulent exchanges of CO2 and water vapour between an aggrading deciduous forest in the north-eastern United States (Harvard Forest) and the atmosphere were measured from 1990 to 1994 using the eddy covariance technique. We present a detailed description of the methods used and a rigorous evaluation of the precision …
Journal: Global Change Biology, Volume 2 (3): 169-182 (1996), ISBN . DOI: 10.1111/j.1365-2486.1996.tb00070.x Sites: US-Ha1