Publications

Publications Found: 1373

The Use Of Relaxed Eddy Accumulation To Measure Biosphere-Atmosphere Exchange Of Isoprene And Other Biological Trace Gases
Bowling, D. R., Turnipseed, A. A., Delany, A. C., Baldocchi, D. D., Greenberg, J. P., Monson, R. K.

The micrometeorological flux measurement technique known as relaxed eddy accumulation (REA) holds promise as a powerful new tool for ecologists. The more popular eddy covariance (eddy correlation) technique requires the use of sensors that can respond at fast rates (10 Hz), and these are unavailable for many ecologically relevant …


Journal: Oecologia, Volume 116 (3): 306-315 (1998), ISBN . DOI: 10.1007/s004420050592 Sites: US-WBW

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), ISBN . DOI: 10.1016/s0168-1923(97)00072-5 Sites: US-WBW

How Environmental Conditions Affect Canopy Leaf-Level Photosynthesis In Four Deciduous Tree Species
Bassow, S. L., Bazzaz, F. A.


Journal: Ecology, Volume 79 (8): 2660-2675 (1998), ISBN . DOI: 10.2307/176508 Sites: US-Ha1

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), ISBN . 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), ISBN . DOI: 10.1029/97gb03367 Sites: CA-Mer

Estimating Clear-Sky Regional Surface Fluxes In The Southern Great Plains Atmospheric Radiation Measurement Site With Ground Measurements And Satellite Observations
Gao, W., Coulter, R. L., Lesht, B. M., Qiu, J., Wesely, M. L.

The authors compared methods for estimating surface fluxes under clear-sky conditions over a large heterogeneous area from a limited number of ground measurements and from satellite observations using data obtained from the southern Great Plains Cloud and …


Journal: Journal Of Applied Meteorology, Volume 37 (1): 5-22 (1998), ISBN . DOI: 10.1175/1520-0450(1998)037<0005:ECSRSF>2.0.CO;2 Sites: US-Wlr

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), ISBN . DOI: 10.1016/s0038-0717(97)00207-1 Sites: US-IB1, US-IB2

Characteristics Of Energy And Water Budgets Over Wet Sedge And Tussock Tundra Ecosystems At North Slope In Alaska
Harazono, Y., Yoshimoto, M., Mano, M., Vourlitis, G. L., Oechel, W. C.

Energy budgets were measured at Arctic tundra ecosystems in Alaska, USA. Measurements were carried out over coastal tundra at Prudhoe Bay in 1994, and at wet sedge, moist and dry tussock tundra around Happy Valley in 1995. Sensible heat flux, H, and latent heat flux, lE, were determined by an eddy correlation technique.

Over …


Journal: Hydrological Processes, Volume 12 (13-14): 2163-2183 (1998), ISBN . DOI: 10.1002/(SICI)1099-1085(19981030)12:13/14<2163::AID-HYP727>3.0.CO;2-Y Sites: US-HVa

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), ISBN . DOI: 10.1007/s004420050471 Sites: US-NR1

Simple And Fast Technique To Measure CO2 Profiles In Soil
Fang, C., Moncrieff, J.

We describe a simple method for sampling soil gas at different profile depths and analyzing CO2 concentration in the gas sample. Soil gas samples were taken on the soil surface from each chosen depth through a gas circulation system and analyzed in situ


Journal: Soil Biology And Biochemistry, Volume 30 (14): 2107-2112 (1998), ISBN . DOI: 10.1016/s0038-0717(98)00088-1 Sites: US-SP1, US-SP2