Publications

Filters: Sites: CA-Man
Clear Filters
Publications Found: 29

Boreas Flight Measurements Of Forest-Fire Effects On Carbon Dioxide And Energy Fluxes
Amiro, B., MacPherson, J. I., Desjardins, R. L.

Fire is the dominant stand-replacing agent in the Canadian boreal forest, but few quantitative measurements are available on the micrometeorological effects of fire. Airborne flux measurements during the BOREAS experiment were referenced to age of burn along a 500-km transect …


Journal: Agricultural And Forest Meteorology, Volume 96 (4): 199-208 (1999). DOI: 10.1016/s0168-1923(99)00050-7 Sites: CA-Man

An Approach To Spatially Distributed Modeling Of Net Primary Production (NPP) At The Landscape Scale And Its Application In Validation Of EOS NPP Products
Reich, P. B., Turner, D. P., Bolstad, P.

Substantial research seeks to improve estimates of ecosystem processes and fluxes at a range of scales, notably from the stand scale (<1 km2) using ecosystem physiology and eddy covariance techniques, to the landscape (∼102 km2) and …


Journal: Remote Sensing Of Environment, Volume 70 (1): 69-81 (1999). DOI: 10.1016/s0034-4257(99)00058-9 Sites: CA-Man, US-KFB, US-Kon

Vertical Gradients In Photosynthetic Gas Exchange Characteristics And Refixation Of Respired CO2 Within Boreal Forest Canopies
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). DOI: 10.1093/treephys/17.1.1 Sites: CA-Man, CA-Oas, CA-Obs, CA-Ojp

Simulating Forest Productivity And Surface-Atmosphere Carbon Exchange In The BOREAS Study Region
Kimball, J. S., Thornton, P. E., White, M. A., Running, S. W.

A process-based, general ecosystem model (BIOME–BGC) was used to simulate daily gross primary production, maintenance and heterotrophic respiration, net primary production and net ecosystem carbon exchange of boreal aspen, jack pine and black spruce stands. Model simulations of daily net carbon exchange of the ecosystem (NEE) explained …


Journal: Tree Physiology, Volume 17 (8-9): 589-599 (1997). DOI: 10.1093/treephys/17.8-9.589 Sites: CA-Man, CA-Oas, CA-Obs, CA-Ojp

Root Mass, Net Primary Production And Turnover In Aspen, Jack Pine And Black Spruce Forests In Saskatchewan And Manitoba, Canada
Steele, S. J., Gower, S. T., Vogel, J. G., Norman, J. M.

Root biomass, net primary production and turnover were studied in aspen, jack pine and black spruce forests in two contrasting climates. The climate of the Southern Study Area (SSA) near Prince Albert, Saskatchewan is warmer and drier in the summer and milder in the winter than the Northern Study Area (NSA) near Thompson, Manitoba, …


Journal: Tree Physiology, Volume 17 (8-9): 577-587 (1997). DOI: 10.1093/treephys/17.8-9.577 Sites: CA-Man, CA-Oas, CA-Obs, CA-Ojp

Growth And Maintenance Respiration Rates Of Aspen, Black Spruce And Jack Pine Stems At Northern And Southern BOREAS Sites
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). DOI: 10.1093/treephys/17.8-9.543 Sites: CA-Man, CA-Oas, CA-Obs, CA-Ojp

Regulation Of Branch-Level Gas Exchange Of Boreal Trees: Roles Of Shoot Water Potential And Vapor Pressure Difference
Dang, Q., Margolis, H. A., Coyea, M. R., Sy, M., Collatz, G. J.

Effects of shoot water potential (Ψ) and leaf-to-atmosphere vapor pressure difference (VPD) on gas exchange of jack pine (Pinus banksiana Lamb.), black spruce (Picea mariana (Mill.) B.S.P.), and aspen (Populus tremuloides Michx.) were investigated at the northern edge of the boreal forest in Manitoba, …


Journal: Tree Physiology, Volume 17 (8-9): 521-535 (1997). DOI: 10.1093/treephys/17.8-9.521 Sites: CA-Man

A Physiological Basis For Biosphere-Atmosphere Interactions In The Boreal Forest: An Overview
Margolis, H. A., Ryan, M. G.
Interdisciplinary field experiments for global change research are large, intensive efforts that study the controls on fluxes of carbon, water, trace gases, and energy between terrestrial ecosystems and the atmosphere at a range of spatial scales. Forest ecophysiology can make significant contributions to …


Journal: Tree Physiology, Volume 17 (8-9): 491-499 (1997). DOI: 10.1093/treephys/17.8-9.491 Sites: CA-Man, CA-Oas, CA-Obs, CA-Ojp

Carbon Distribution And Aboveground Net Primary Production In Aspen, Jack Pine, And Black Spruce Stands In Saskatchewan And Manitoba, Canada
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). DOI: 10.1029/97jd02317 Sites: CA-Man