R.E. Stevenson
Pennsylvania State University
7 Papers
64 Citations
R.E. Stevenson is an academic researcher from Pennsylvania State University. The author has contributed to research in topics: Stomatal conductance & Prunus serotina. The author has an hindex of 7, co-authored 7 publications.
Chat about Author
Papers
Physiological and foliar symptom response in the crowns of Prunus serotina, Fraxinus americana, and Acer rubrum canopy trees to ambient ozone under forest conditions
Marcus Schaub,John M. Skelly,J. Zhang,J.A. Ferdinand,J.E. Savage,R.E. Stevenson,Donald D. Davis,K.C. Steiner +7 more
TL;DR: The inconsistent differences in gas exchange response within the same crowns of ash and the uncoupling relationship between g(wv) and P(n) demonstrate the strong influence of heterogeneous environmental conditions within forest canopies.
62
A multi-variate statistical model integrating passive sampler and meteorology data to predict the frequency distributions of hourly ambient ozone (O3) concentrations.
TL;DR: A multi-variate, non-linear statistical model is described to simulate passive O3 sampler data to mimic the hourly frequency distributions of continuous measurements using climatologic O3 indicators and passive sampler measurements, which can lead to the first order approximation of atmospheric O3 flux and plant stomatal uptake.
50
Use of bioindicators and passive sampling devices to evaluate ambient ozone concentrations in north central Pennsylvania.
TL;DR: Ambient concentrations of tropospheric ozone and ozone-induced injury to black cherry and common milkweed were determined in north central Pennsylvania and a significant positive relationship showed that injury toblack cherry was a function of cumulative ozone concentrations and available soil moisture.
28
Influence of light fleck and low light on foliar injury and physiological responses of two hybrid poplar clones to ozone
C. Wei,John M. Skelly,S.P. Pennypacker,J.A. Ferdinand,J.E. Savage,R.E. Stevenson,Donald D. Davis +6 more
TL;DR: Results indicate that not only the integral, but also the pattern of photo flux density, may affect carbon gain in plants.
20
Responses of hybrid poplar clones and red maple seedlings to ambient O(3) under differing light within a mixed hardwood forest.
C. Wei,John M. Skelly,S.P. Pennypacker,J.A. Ferdinand,J.E. Savage,R.E. Stevenson,Donald D. Davis +6 more
TL;DR: The studies suggest that plant physiological responses to O(3) exposure are likely complicated due to multiple factors under natural forest conditions.
18