Publications

Publications Found: 1373

Characterization Of Radiation Regimes In Nonrandom Forest Canopies: Theory, Measurements, And A Simplified Modeling Approach
Kucharik, C. J., Norman, J. M., Gower, S. T.
We used field measurements and Monte Carlo simulations of canopy gap-size distribution and gap fraction to examine how beam radiation interacts with clumped boreal forest canopies of aspen (Populus tremuloides Michx.), black spruce (Picea mariana (Mill.) B.S.P.) and jack pine (Pinus …


Journal: Tree Physiology, Volume 19 (11): 695-706 (1999), ISBN . DOI: 10.1093/treephys/19.11.695 Sites: CA-Man, CA-Obs, CA-Ojp

Simulated Nitrogen Cycling Response To Elevated CO2 In Pinus Taeda And Mixed Deciduous Forests
Johnson, D. W.

Interactions between elevated CO2 and N cycling were explored with a nutrient cycling model (NuCM, Johnson et al. 1993, 1995) for a Pinus taeda L. site at Duke University, North Carolina, and a mixed deciduous site at Walker Branch, Tennessee. The simulations tested whether N limitation would prevent growth increases …


Journal: Tree Physiology, Volume 19 (4-5): 321-327 (1999), ISBN . DOI: 10.1093/treephys/19.4-5.321 Sites: US-Dk3

Seasonal Gas Exchange Of Black Spruce Using An Automatic Branch Bag System
Rayment, M. B., Jarvis, P. G.

Four large cuvettes were used to measure whole-branch CO2 and H2O vapour exchange at the Boreal Ecosystem-Atmosphere Study, Southern Study Area, Old Black Spruce site. Measurements started before the spring thaw and continued until after the winter freeze-up. Daytime photosynthesis, nighttime respiration, transpiration …


Journal: Canadian Journal Of Forest Research, Volume 29 (10): 1528-1538 (1999), ISBN . DOI: 10.1139/cjfr-29-10-1528 Sites: CA-Obs, CA-SF2, CA-SF3

Water And Carbon Dioxide Exchange At A Boreal Young Jack Pine Forest In The BOREAS Northern Study Area
Joiner, D. W., McCaughey, J. H., Lafleur, P. M., Bartlett, P. A.

Climatological measurements, including carbon dioxide flux density, were made from May to September 1994 and from May to November 1996 at a young jack pine (Pinus banksiana Lamb.) forest near Thompson, …


Journal: Journal Of Geophysical Research: Atmospheres, Volume 104 (D22): 27641-27652 (1999), ISBN . DOI: 10.1029/1999jd900368 Sites: CA-Man

Chemical Processing Of Biogenic Hydrocarbons Within And Above A Temperate Deciduous Forest
Makar, P. A., Fuentes, J. D., Wang, D., Staebler, R. M., Wiebe, H. A.

A one-dimensional canopy model was developed to study photochemical processes inside and above a mixed deciduous forest in southern Ontario. The Eulerian model made use of Lagrangian dispersion principles …


Journal: Journal Of Geophysical Research: Atmospheres, Volume 104 (D3): 3581-3603 (1999), ISBN . DOI: 10.1029/1998jd100065 Sites: CA-Cbo

Diurnal And Annual Exchanges Of Mass And Energy Between An Aspen-Hazelnut Forest And The Atmosphere: Testing The Mathematical Model Ecosys With Data From The BOREAS Experiment
Grant, R. F., Black, T. A., den Hartog, G., Berry, J. A., Neumann, H. H., Blanken, P. D., Yang, P. C., Russell, C., Nalder, I. A.

There is much uncertainty about the net carbon (C) exchange of boreal forest ecosystems, although this exchange may be an important part of global C dynamics. To resolve this uncertainty, net C exchange has …


Journal: Journal Of Geophysical Research: Atmospheres, Volume 104 (D22): 27699-27717 (1999), ISBN . DOI: 10.1029/1998jd200117 Sites: CA-Oas

Environmental Controls Over Net Exchanges Of Carbon Dioxide From Contrasting Florida Ecosystems
Clark, K. L., Gholz, H. L., Moncrieff, J. B., Cropley, F., Loescher, H. W.


Journal: Ecological Applications, Volume 9 (3): 936-948 (1999), ISBN . DOI: 10.2307/2641340 Sites: US-SP1, US-SP2, US-SP3, US-SP4

The Carbon Balance Of Tropical, Temperate And Boreal Forests
Malhi, Y., Baldocchi, D. D., Jarvis, P. G.

Forest biomes are major reserves for terrestrial carbon, and major components of global primary productivity. The carbon balance of forests is determined by a number of component …


Journal: Plant, Cell And Environment, Volume 22 (6): 715-740 (1999), ISBN . DOI: 10.1046/j.1365-3040.1999.00453.x Sites: CA-Obs, US-WBW

Dynamics Of Isotopic Exchange Of Carbon Dioxide In A Tennessee Deciduous Forest
Bowling, D. R., Baldocchi, D. D., Monson, R. K.

The combination of isotopic measurements and micrometeorological flux measurements is a powerful new approach that will likely lead to new insight into the dynamics of CO2 exchange between terrestrial …


Journal: Global Biogeochemical Cycles, Volume 13 (4): 903-922 (1999), ISBN . DOI: 10.1029/1999gb900072 Sites: US-WBW

On The Seasonality Of Isoprene Emissions From A Mixed Temperate Forest
Fuentes, J. D., Wang, D.

Measurements of isoprene concentration and flux were made at a mixed deciduous forest in southern Canada during 1995 to characterize diel and seasonal emissions and thus deduce annual inventories. Isoprene …


Journal: Ecological Applications, Volume 9 (4): 1118-1131 (1999), ISBN . DOI: 10.1890/1051-0761(1999)009[1118:otsoie]2.0.co;2 Sites: CA-Cbo