Publications

Publications Found: 1437

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

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

Responses Of Net Ecosystem Exchanges Of Carbon Dioxide To Changes In Cloudiness: Results From Two North American Deciduous Forests
Gu, L., Fuentes, J. D., Shugart, H. H., Staebler, R. M., Black, T. A.

We analyzed half-hourly tower-based flux measurements of carbon dioxide (CO2) from a boreal aspen forest and a temperate mixed deciduous forest in Canada to examine the influences of clouds on forest carbon uptake. We showed that the presence of clouds consistently and significantly increased the net ecosystem exchanges …


Journal: Journal Of Geophysical Research: Atmospheres, Volume 104 (D24): 31421-31434 (1999). DOI: 10.1029/1999jd901068 Sites: CA-Cbo

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). DOI: 10.1093/treephys/19.4-5.321 Sites: US-Dk3

Seasonal Course Of Isoprene Emissions From A Midlatitude Deciduous Forest
Goldstein, A. H., Goulden, M. L., Munger, J. W., Wofsy, S. C., Geron, C. D.

Continuous measurements of whole canopy isoprene emissions over an entire growing season are reported from Harvard Forest (42°32′N, 72°11′W). Emissions were calculated from the ratio of observed CO2


Journal: Journal Of Geophysical Research: Atmospheres, Volume 103 (D23): 31045-31056 (1998). DOI: 10.1029/98jd02708 Sites: US-Ha1

Relationship Between Ecosystem Productivity And Photosynthetically Active Radiation For Northern Peatlands
Frolking, S. E., Bubier, J. L., Moore, T. R., Ball, T., Bellisario, L. M., Bhardwaj, A., Carroll, P., Crill, P. M., Lafleur, P. M., McCaughey, J. H., Roulet, N. T., Suyker, A. E., Verma, S. B., Waddington, J. M., Whiting, G. J.

We analyzed the relationship between net ecosystem exchange of carbon dioxide (NEE) and irradiance (as photosynthetic photon flux density or PPFD), using published and unpublished data that have been collected during midgrowing season for carbon balance studies at seven peatlands in North America and Europe. NEE measurements included …


Journal: Global Biogeochemical Cycles, Volume 12 (1): 115-126 (1998). DOI: 10.1029/97gb03367 Sites: CA-Mer

Contributions Of Interacting Biological Mechanisms To Soil Aggregate Stabilization In Restored Prairie
Jastrow, J., Miller, R., Lussenhop, J.

A better understanding of the soil aggregation process is needed to address a variety of concerns, including soil quality and erosion, agricultural sustainability, soil C sequestration, the mobility of hazardous chemicals and remediation of contaminated sites. We used data …


Journal: Soil Biology And Biochemistry, Volume 30 (7): 905-916 (1998). DOI: 10.1016/s0038-0717(97)00207-1 Sites: US-IB1, US-IB2

On Using Eco-Physiological, Micrometeorological And Biogeochemical Theory To Evaluate Carbon Dioxide, Water Vapor And Trace Gas Fluxes Over Vegetation: A Perspective
Baldocchi, D., Meyers, T.

How eco-physiological, biogeochemical and micrometeorological theory can be used to compute biosphere–atmosphere, trace gas exchange rates is discussed within the framework of a process model. The accuracy of the theory is tested by comparing computations of mass and energy flux densities (water vapor, sensible heat, CO2


Journal: Agricultural And Forest Meteorology, Volume 90 (1-2): 1-25 (1998). DOI: 10.1016/s0168-1923(97)00072-5 Sites: US-WBW

Relationships Of Leaf Dark Respiration To Leaf Nitrogen, Specific Leaf Area And Leaf Life-Span: A Test Across Biomes And Functional Groups
Reich, P. B., Walters, M. B., Ellsworth, D. S., Vose, J. M., Volin, J. C., Gresham, C., Bowman, W. D.

Based on prior evidence of coordinated multiple leaf trait scaling, we hypothesized that variation among species in leaf dark respiration rate (Rd) should scale with variation in traits such as leaf nitrogen (N), leaf life-span, specific leaf area (SLA), and net photosynthetic capacity …


Journal: Oecologia, Volume 114 (4): 471-482 (1998). DOI: 10.1007/s004420050471 Sites: US-NR1

Climatology Of Gravity Waves In A Forest
Lee, X., Barr, A. G.

The objectives of this study are to establish a climatology of gravity waves in a forest and to gain insights into the dynamics of this motion type. The site is part of the BOREAS (Boreal Ecosystem—Atmosphere Study) flux monitoring network. The analysis relies mainly on 5 Hz temperature time series observed with two arrays of fine-wire …


Journal: Quarterly Journal Of The Royal Meteorological Society, Volume 124 (549): 1403-1419 (1998). DOI: 10.1002/qj.49712454904 Sites: CA-Cbo