A5000390276- Plant Water Relations and Carbon Dynamics
- Aeolian processes and effects
- Hydrology and Sediment Transport Processes
- Tree-ring climate responses
- Fluid Dynamics and Turbulent Flows
- Plant responses to elevated CO2
- Meteorological Phenomena and Simulations
- Atmospheric and Environmental Gas Dynamics
- Wind and Air Flow Studies
- Climate variability and models
- Fire effects on ecosystems
- Remote Sensing and LiDAR Applications
- Forest ecology and management
- Tree Root and Stability Studies
- Photosynthetic Processes and Mechanisms
- Fluid Dynamics and Vibration Analysis
- Solar Radiation and Photovoltaics
- Peatlands and Wetlands Ecology
- Model Reduction and Neural Networks
- Flow Measurement and Analysis
- Irrigation Practices and Water Management
- Cryospheric studies and observations
- Ecology and Vegetation Dynamics Studies
- Aerodynamics and Fluid Dynamics Research
- Energy Load and Power Forecasting
East Carolina University
2004-2023
Indiana University Bloomington
2003-2013
Piedmont International University
2004
University of California, Davis
1995-2000
Our objective was to gain a detailed understanding of how photosynthetically active radiation (PAR), vapor pressure deficit (D) and soil water interact control transpiration in the dominant canopy species mixed hardwood forest northern Lower Michigan. An improved these environmental factors affect whole-tree use unmanaged ecosystems is necessary assessing consequences climate change on terrestrial cycle. We used continuously heated sap flow sensors measure mature trees four during two...
We report results from the first 3 years (1999–2001) of long‐term measurements net ecosystem exchange (NEE) at an AmeriFlux site over a mixed hardwood forest in northern lower Michigan. The primary measurement methodology uses eddy covariance systems with closed‐path infrared gas analyzers two heights (46 and 34 m) above (canopy height is ∼22 m). One objective to contribute more firmly established estimating annual production (NEP), by systematically examining consequences several variations...
• Quantitative assessment of carbon (C) storage by forests requires an understanding climatic controls over respiratory C loss. Ecosystem respiration can be estimated biometrically as the sum (RΣ) soil (Rs), leaf (Rl) and wood (Rw) respiration, meteorologically measuring above-canopy nocturnal CO2 fluxes (Fcn). Here we RΣ 5 yr in a forest Michigan, USA, compared Fcn on turbulent nights. We also evaluated carbon-use efficiency (Ec = PNP/PGP) using biometric estimates net primary production...
Abstract Clouds can exert strong effects on ecosystem CO2 and water vapor fluxes may be important determinants of terrestrial primary production. We used three years eddy-covariance meteorological data from an aspen-dominated northern hardwood forest in Michigan to investigate how canopy photosynthesis (P), evapotranspiration (E), use efficiency (WUE) responded changes cloud cover, or the proportion diffuse (If) total (It) photosynthetically active radiation (PAR). Canopy quantum (the...
A numerical scheme was developed to couple a multilayer canopy radiation model, photosynthesis model for C3 species, and leaf stomatal conductance with single-leaf energy balance equation. This coupled used simulate the responses of horizontally uniform forest its ambient microenvironment, using micrometeorological data collected from field measurements in canopy. Emphasis placed on issues associated modeling transient plant leaves. For example, thermal storage found be important transience...