Elizabeth (Betty) Walter-Shea
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- My Story
- Publications & Presentations
- Expertise & Interests
- Courses Taught
|Title||Environmental Biophysicist with emphasis in Remote Sensing|
803 Hardin Hall
3310 Holdrege Street
Hi, I'm Betty Walter-Shea, professor in the School of Natural Resources. I've been on the University of Nebraska-Lincoln faculty since 1989 as a researcher and instructor.
My area of interest is in the study of light interactions in vegetative canopies and how this relates to plant functioning. I've also been interested in relating the light, which is reflected from vegetation, to plant status and using those relations to infer the status of plants from the reflected signal (field-based remote sensing). The light interaction in vegetation is highly dependent on the direction and quality of the light, the angle of view and the amount and display of leaf material. Critical variables are the time of day, viewing direction (relative to the sun), sky condition and the type and condition of vegetation.
My recent research has been on the study of remote sensing estimates of photosynthetically active radiation absorbed by maize and soybean crops, as part of a carbon-sequestration (storage) program. I have been involved in several experiments in which the common goal was to understand the interactions between the vegetative surface and the atmosphere (including ultraviolet-light penetration into vegetative canopies) and their role in global environmental change.
Remotely sensed data are widely used to monitor land surfaces and provide input data for climate models. Information on the relation between remote-sensing signals and the land surface is vital in interpreting images from satellite and aircraft. The interaction of sunlight with leaves, stems and soil can be quite complex, making interpretation challenging. I bring these interests into my classes, which include NRES 208, Introduction to Applied Climate Science; NRES 408/808, Microclimate: The Biological Environment; and NRES 908, Solar Radiation Interactions with the Earth's Surface.
I received my bachelor's degree from the University of Central Arkansas, my master's degree from Texas A & M University and my Ph.D. from the University of Nebraska-Lincoln.
|Zygielbaum, A.I., T.J. Arkebauer, E.A. Walter-Shea, and D. L. Scoby. 2012. Detection and measurement of vegetation photoprotection stress response using PAR reflectance. Israel Journal of Plant Sciences 60: 37-48.|
|Arkebauer, T.J., E.A. Walter-Shea, M.A. Mesarch, A.E. Suyker, and S.B. Verma. 2009. Scaling up of CO2 fluxes from leaf to canopy in maize-based agroecosystems. Agricultural and Forest Meteorology.doi: 10.1016/j.agrformet.2009.04.013|
|Hanan, N.P., J.A. Berry, S.B. Verma, E.A. Walter-Shea, A.E. Suyker, G.G. Burba and A.S. Denning. 2005. Model analyses of biosphere-atmosphere exchanges of CO2, water and energy from Great Plains tallgrass prairie and wheat sites, Agricultural and Forest Meteorology 131: 162-179.|
|Verma, S.B., A. Dobermann, K.G. Cassman, D.T. Walters, J.M.H. Knops, T.J. Arkebauer, A.E. Suyker, G.G. Burba, B. Amos, H. Yang, D. Ginting, K.G. Hubbard, A.A. Gitelson, and E.A. Walter-Shea. 2005. Annual carbon dioxide exchange in irrigated and rainfed maize-based agroecosystems. Agricultural and Forest Meteorology 131:77-96.|
|Walter-Shea, E.A., J.L. Privette, D. Cornell, M.A. Mesarch and C.J. Hays, 1997. Relations between directional spectral vegetation indices and leaf area and absorbed radiation in alfalfa. Remote Sensing of Environment 61:162-177.|
|Deering, D.W., E.M. Middleton, B.L. Blad, E.A. Walter-Shea, J. Irons, C.L. Walthall and C.J. Hays, 1992. Prairie grassland bidirectional reflectances measured by different instruments at the FIFE site. Journal of Geophysical Research 97:18,887-18,904.|
|Walter-Shea, E.A., J.M. Norman and B.L. Blad, 1989. Leaf bidirectional reflectance and transmittance in corn and soybean. Remote Sensing of Environment. 29(2):161-174.|
- BS - University of Central Arkansas, Geography (1978)
- MS - Texas A & M University, Geography (1981)
- PhD - University of Nebraska-Lincoln, Agronomy with Agricultural Meteorology emphasis (1987)
- Applied Climate and Spatial Science
American Association for the Advancement of Science
American Society of Agronomy
Field-based Remote Sensing, Environmental Biophysics, Agricultural Meteorology, Bio-atmospheric Interactions
Master of Science in Natural Resource Sciences
including specializations in
Doctor of Philosophy in Natural Resource Sciences
including specializations in
|Course Number||Course Title||Fall Even Years||Fall Odd Years||Spring Even Years||Spring Odd Years||Summer Session||Cross Listing|
|GEOG 408||Microclimate: The Biological Environment||X||X||AGRO/GEOG/HORT/METR/NRES/WATS 408/808|
|GEOG 808||Microclimate: The Biological Environment||X||X||AGRO/GEOG/HORT/METR/NRES/WATS 408/808|
|NRES 208||Applied Climate Sciences||X||X||n/a|
|NRES 408||Microclimate: The Biological Environment||X||X||AGRO/GEOG/HORT/METR/NRES/WATS 408/808|
|NRES 808||Microclimate: The Biological Environment||X||X||AGRO/GEOG/HORT/METR/NRES/WATS 408/808|
|NRES 908||Solar Radiation Interactions at Earth's Surface||AGRO/HORT/METR/NRES 908|
|WATS 408||Microclimate: The Biological Environment||X||X||AGRO/GEOG/HORT/METR/NRES/WATS 408/808|