John F. Schalles
Professor, Director of the Environmental Science Program
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Courses Offered
- BIO 335 - Zoology
- BIO 390 - Environmental Science
- BIO 435 - Field Biology in the Southeastern United States
- BIO 485 - Marine and Freshwater Ecology
- BIO 486 - Freshwater Ecology Laboratory
- BIO 487 - Marine Ecology Laboratory
- BIO 523 - Environmental Toxicology and Risk Assessment
Research Interests
- Ecological Remote Sensing
- Algorithms for Chlorophyll Retrieval in Turbid Coastal and Inland Waters
- Wetland Vegetation - Community Composition and Biomass
- CDOM in Estuarine and Shelf waters
- Coral Reef and Seagrass Community Assessments
- Suspended Sediments and Littoral Benthos
- Sensors
- Marine Ecology
- Estuarine Mixing Gradients and Material Transformations
- Salt Marsh Community Structure and Production
- General Limnology
- Eutrophication in Midwestern Lakes and Reservoirs
- Spatial Gradients in Reservoir Systems
- Littoral-Pelagic Zone Interactions
- Wetland and Lake Littoral Ecosystems
- Plant and Invertebrate Production
- Trophic Structure and Efficiencies
- Biogeochemistry
- Regional Comparisons
- Hydrologic Control
Recent Publications:
Wang, H., C.M. Hladik, H. Wuang, K. Milla, L. Edmiston, M. Harwell, and J. Schalles. Mapping Chlorophyll-a and TSS in Apalachicola Bay, Florida Using MODIS Terra 250 m Imagery. (submitted to International Journal of Ecology & Development)
Gilerson, A., J. Zhou, S. Hlaing, I. Ioannou, J. Schalles, B. Gross, F. Moshary, and S. Ahmed. 2007. Fluorescence component in the reflectance spectra from coastal waters. Dependence on water composition. Optics Express 15(24): 15702-15721.
Gitelson, A.A., J.F. Schalles, and C.M. Hladik. 2007. Remote chlorophyll-a retrieval in turbid, productive estuarine waters: Chesapeake Bay Case Study. Remote Sensing of the Environment 109(4): 464-472.
Schalles, J.F., C.M. Hladik, L. Whitehurst, and P. Merani. 2006. Hyperspectral imaging of wetlands and estuarine waters of National Estuarine Research Reserves in the Southeastern and Mid-Atlantic Regions of the United States. Extended Abstract. Ocean Optics 18 Conference, Montreal, Canada. (14 p)
Schalles, J. F. 2006. Optical remote sensing techniques to estimate phytoplankton chlorophyll a concentrations in coastal waters with varying suspended matter and CDOM concentrations. In:
(L. Richardson and E. Ledrew, editors) Remote Sensing of Aquatic Coastal Ecosystem Processes: Science and Management Applications. Springer. pp. 27-79.Takacs, M. , J.J. Alberts, and J.F. Schalles. 2004. Ultaviolet-visible and fluorescence spectral evidence of natural organic matter (NOM) changes along an estuarine salinity gradient. Estuaries 27: 297-311.
Schalles, John F., and C.M. Hladik. 2004. Remote chlorophyll estimation in coastal waters with tripton and CDOM interferences. Extended abstract. Ocean Optics XVII. Freemantle, Australia.Schalles, J.F. J.A. Maeder, D.C. Rundquist, S. Narumalani, and J. Keck. 2003. Close range, hyperspectral reflectance measurements of corals and other reef substrates. Proceedings of the 9th International Coral Reef Symposium, Bali, Indonesia. International Society for Reef Studies. V. 2: 1017-1024.
Maeder, J., S. Narumalani, J. Schalles, D. Rundquist, K. Hutchins, and W. Bradley. 2003. Remote sensing of coral reefs using high-resolution satellite data. Proceedings of the 9th International Coral Reef Symposium, Bali, Indonesia International Society for Reef Studies. V. 2: 1007-1016.
Maeder, J., S. Narumalani, D. Rundquist, R. Perk, J. Schalles, K. Hutchins, and J. Keck. 2002. Classifying and mapping general coral reef structure using Ikonos data. Photogrammetric Engineering and Remote Sensing 68(12): 1297-1305.
Schalles, J.F., D.C. Rundquist, and F.R. Schiebe. 2001. The influence of suspended clays on phytoplankton reflectance signatures and the remote estimation of chlorophyll. Vehrein Internationale Verein Limnologie Vehr. Internat. Verein. Limnol. 27: 3619-3625.
Schalles, J.F., and Y.Z. Yacobi. 2000. Remote detection and seasonal patterns of phycocyanin, carotenoid, and chlorophyll pigments in eutrophic waters. Archives fur Hydrobiologia - Special Issues Advancements in Limnology, 55: 153-168.
Gitelson, A.A., Y.Z. Yacobi, J.F. Schalles, D.C. Rundquist, L. Han, R. Stark, and D. Etzion. 2000. Remote estimation of phytoplankton density in productive waters. Archives fur Hydrobiologia - Special Issues Advancements in Limnology, 55: 121-136.
Schalles, J.F. , D.C. Rundquist, A. Gitelson, and J. Keck. 2000. Close range hyperspectral reflectance measurements of healthy Indo-Pacific and Caribbean corals. Proceedings of the Sixth International Conference on Remote Sensing for Marine and Coastal Environments. University of Michigan Press, Ann Arbor, Vol. I: 431-439.
Last modified: March 20, 2008
