Biosciences Division

Staff

Michael G. Ryon

Michael G. Ryon

Biological Monitoring Group
Environmental Sciences Division
Oak Ridge National Laboratory
Oak Ridge, TN 37831-6351
Phone:  (865)574-7430
Fax:  (865)576-9938
ryonmg@ornl.gov

Education

  • M.S., Ecology, University of Tennessee, Knoxville TN, 1981
  • B.S., Zoology/Biochemistry, University of Tennessee, Knoxville TN, 1975

Research Interests

  • Stream restoration and recovery
  • Fish ecology
  • Conservation of rare and endangered fishes
  • Biological monitoring
  • Impact of hydropower on fish communities
  • Restoration of native grass communities
  • Management and reduction of invasive exotic plants

Research Projects

  • Fish community monitoring of East Fork Poplar Creek, White Oak Creek, and Mitchell Branch
  • Impacts of urbanization in the Hinds Creek watershed (Anderson County, TN) over the past decade
  • Factors controlling localized distribution of the striped shiner (Luxilus chrysocephalus) in streams of the ridge and valley province of Tennessee
  • Patterns of fish distribution, range expansion, and population dynamics as indicated by long-term monitoring of streams in Tennessee and Kentucky
  • Protection and restoration of Turkey Creek watershed (Knox County, TN): A community action project
  • Patterns of recovery of stream fish communities and populations in Tennessee streams
  • Life history parameters of the Tennessee Dace (Phoxinus tennesseensis)
  • Use of fish behavior to evaluate the effect of hydropower turbulence on survival of migrating fish
  • Re-introduction of native fish into streams to accelerate recovery
  • Restoration of native warm season grasses on the Oak Ridge Reservation
  • Use of native grass and wildflower communities in urban stream detention basins

Publications

Journals:

Bryant, R., J. Beets, and M. G. Ryon. 1979. Rediscovery of the sharphead darter, Etheostoma acuticeps, in North Carolina. Brimleyana 2:137-140.

Bryant, R., B. Bauer, M. G. Ryon, and W. Starnes. 1979. Distributional notes on fishes from Northern Georgia with comments on status of rare species. Southeastern Fishes Council Proceedings 2(4).

Ryon, M. G. 1986. The life history and ecology of Etheostoma trisella (Pisces: Percidae). American Midland Naturalist 115:73-86.

Ryon, M. G., and J. M. Loar. 1988. Checklist of fishes on the Department of Energy Oak Ridge Reservation. J. TN Acad. Sci. 63:97-102.

Adams, S. M., K. Shepard, M. Greeley, Jr., B. Jimenez, M. G. Ryon, L. R. Shugart, and J. F. McCarthy. 1989. “The use of bioindicators for assessing the effects of pollutant stress on fish.” Mar. Environ Res. 28:459-464.

Ryon, M. G., and R. H. Ross. 1990. Water quality criteria for 2,4,6-trinitrotoluene. Regulatory Toxicology and Pharmacology 11:104-113.

Adams, S., W. Crumby, M. Greeley, Jr., M. G. Ryon, and E. Schilling. 1992. Relationships between physiological and fish population responses in a contaminated stream. Environmental Toxicology and Chemistry 11:1549-1557.

Adams. S. M., and M. G. Ryon. 1994. A comparison of health assessment approaches for evaluating the effects of contaminant-related stress on fish populations. J. Aquatic Ecosystem Health 3:15-25.

Hill, W. R., M. G. Ryon, and E. M. Schilling. 1995. Light limitation in a stream ecosystem: responses by primary producers and consumers. Ecology 76(4):1297-1309.

Ryon, M. G., and B. A. Carrico. 1998. Distributional records for fishes of the coastal plain province, Ballard and McCracken counties, in Western Kentucky. J. Kentucky Academy of Sciences 59(1):51-63

Ryon, M. G., J. J. Beauchamp, W. K. Roy, E. Schilling, B. A. Carrico, and R. L. Hinzman. 2000. Stream dispersal of dead fish and survey effectiveness in a simulated fish kill. Trans. Amer. Fish. Soc. 129:89-100.

Adams, S. M., M. S. Greeley, Jr., and M. G. Ryon. 2000. “Evaluating effects of contaminants on fish health at multiple levels of biological organization: extrapolating from lower to higher levels”. Human Ecolog. Risk Assess. 6:15-27.

Southworth, G. R., R. R. Turner, M. J. Peterson, M. A. Bogle, and M. G. Ryon. 2000. “Response of mercury contamination in fish to decreased aqueous concentrations and loading of inorganic mercury in a small stream.” Environ. Monitor. Assess. 63:481-494.

Southworth, G. R., M. J. Peterson, and M. G. Ryon. 2000. “Long-term increased bioaccumulation of mercury in largemouth bass follows reduction of waterborne selenium.” Chemosphere 21:1101-1105.

Ryon, M. G., A. J. Stewart, L. A. Kszos, and T. L. Phipps. “Impacts on streams from the use of sulfur-based compounds for dechlorinating industrial effluents”. Water, Air and Soil Pollution (In press).

Carrico, B. A., and M. G. Ryon. “Introduction of banded sculpin into a coal fly ash impacted stream: a case study on the use of fish introductions in the rehabilitation of aquatic systems.” Environ Manage. (In press).

ORNL Reports:

Ross, R., M. G. Ryon, M. Daugherty, J. Drury, J. Ensminger and V. Cone. 1980. Scientific Rationale for the Selection of Toxicity Testing Methods: Human Health Assessment. ORNL/EIS-151. EPA-560/1-80-001. 413 pp.

Ryon, M. G., P. Voytek, and W. Galbraith, (eds). 1982. Assessment of Risks to Human Reproduction and to Development of the Human Conceptus from Exposure to Environmental Substances. Proceedings of USEPA Workshops. ORNL/EIS-197; EPA-600/9-82-001. 159 pp.

Ryon, M. G., B. Pal, S. Talmage, and R. Ross. 1984. Database Assessment of the Health and Environmental Effects of Munition Production Waste Products. ORNL-6018.

Ryon, M. G., and D. Sawhney, (eds). 1985. Scientific Rationale for the Selection of Toxicity Testing Methods II. Teratology, Immunotoxicology, and Inhalation Toxicology. ORNL-6094; EPA-560/6-84-004. 243 pp.

Ryon, M. G. 1986. Water Quality Criteria for Nitrocellulose. ORNL-6179. 80 pp.

Ryon, M. G. (ed). 1990. Evaluation of Fish Kills Occurring During November 1986 and July 1987 in Upper East Fork Poplar Creek near the Y-12 Plant. ORNL/TM-11578.

Ryon, M. G. 1992. "Fishes" and "Habitat (substrate and cover)". In: G. R. Southworth (ed), Ecological Effects of Contaminants and Remedial Actions in Bear Creek. ORNL/TM-11977.

Ryon, M. G. (ed.). 1992. Ecological Effects of Contaminants in McCoy Branch, 1989-1990. ORNL/TM-11926.

Ryon, M. G. 1993. "Instream ecological monitoring (fishes)" and “Habitat (substrate and cover)”. In: R. Hinzman (ed.). Second Report on the Oak Ridge Y-12 Plant Biological Monitoring and Abatement Program for East Fork Poplar Creek. Y/TS-888.

Ryon, M. G. 1993. "Instream ecological monitoring (fishes)". In: J. G. Smith (ed.), First Report on the Oak Ridge K-25 Site Biological Monitoring and Abatement Program for Mitchell Branch. ORNL/TM-11073.

Pounds, L., P. Parr, and M. G. Ryon. 1993. Resource Management Plan for the Oak Ridge Reservation, Volume 30. ORNL/NERP-8.

Ryon, M. G. 1994. "Instream ecological monitoring (fishes)" and “Habitat (substrate and cover)”. In: J. M. Loar (ed), Third Annual Report on the ORNL Biological Monitoring and Abatement Program. ORNL/TM-11358.

Ryon, M. G. 1994. "Ecological monitoring studies (fishes)". In: Kszos, L. A., R. L. Hinzman, M. J. Peterson, M. G. Ryon, J. G. Smith, and G. R. Southworth. Report on the Biological Monitoring Program at Paducah Gaseous Diffusion Plant, December 1992 to December 1993. ORNL/TM-12716.

Ryon, M. G. 1994. "Instream ecological monitoring (fishes)". In: J. G. Smith (ed.), Second Report on the Oak Ridge K-25 Site Biological Monitoring and Abatement Program for Mitchell Branch. ORNL/TM-12150.

Ryon, M. G. 1994. "Ecological monitoring studies (fishes)". In: L. A. Kszos (ed.). Report on the Biological Monitoring Program at Paducah Gaseous Diffusion Plant, December 1990 to November 1992. ORNL/TM-12338/R1.

Samples, B. E., T. L. Ashwood, B. A. Carrico, L. A. Kszos, M. S. Nazerias, T. L. Phipps, W. K. Roy, M. G. Ryon, E. M. Schilling, M. Smith, A. J. Stewart, G. W. Suter Jr., and L. F. Wicker. 1994. Methods for Assessing Ecological Risks of Smokes and Obscurants to Threatened and Endangered Species. ORNL/M-4042.

Ryon, M. G. 1994. “Appendix C. Technical Memorandum for the Portsmouth Baseline Ecological Risk Assessment: Fall (1993) and Summer (1994) Fish Community Surveys”. In: D. M. Steinhauff et al., Baseline Ecological Risk Assessment, Portsmouth Gaseous Diffusion Plant, Piketon, Ohio. Volume 3. DOE/OR/11-1316/V3&D1/.

Carrico, B. A., and M. G. Ryon. 1996. An Ecological Study on the Introduction of the Banded Sculpin into a Coal Flyash Impacted Stream. ORNL/TM-13175.

Ryon, M. G. 1996. "Ecological monitoring studies (fishes)". In: L. A. Kszos (ed.). Report on the Biological Monitoring Program at Paducah Gaseous Diffusion Plant, December 1993 to December 1994. ORNL/TM-12942.

Ryon, M. G. 1996. "Ecological monitoring studies (fishes)". In: L. A. Kszos (ed.). Report on the Biological Monitoring Program at Paducah Gaseous Diffusion Plant, January-December 1995. ORNL/TM-13190.

Roy, W., M. G. Ryon, R. Hinzman, J. Smith, J. Beauchamp. M. Smith, B. Carrico, R. Hoffmeister, M. McCracken, and R. Norman. 1996. Thermal Discharges from Paducah Gaseous Diffusion Plant Outfalls: Impacts on Stream Temperatures and Fauna of Little Bayou and Big Bayou Creeks. ORNL/TM-13183.

Ryon, M. G. (ed.). 1996. Ecological Effects of Contaminants in McCoy Branch, 1991-1993. ORNL/TM-13125.

Smith, J. G., M. J. Peterson, and M. G. Ryon. 1996. An Ecological Investigation of a Vanadium and Uranium Mill Tailings Site. ORNL/TM-13249.

Ryon, M. G. 1997. "Ecological monitoring studies (fishes)". In: L. A. Kszos (ed.). Report on the Biological Monitoring Program at Paducah Gaseous Diffusion Plant, January-December 1996. ORNL/TM-13377.

Mulholland, P., D. Awl, M. Harvey, J. Mitchell, L. Pounds, B. Rosensteel, W. Roy, M. Ryon, E. Schilling, J. Smith, J. Webb, and D. West. 1997. Parcel ED-1 Mitigation Action Plan Implementation, Annual Report ORNL/TM-13613.

Adams, S., C. Brandt, S, Cicerone, S. Christensen, M. Greeley, Jr., W. Hill, M. Huston, L. Kszos, J. McCarthy, M. Peterson, M. Ryon, J. Smith, G. Southworth, and A. Stewart. 1998. Oak Ridge Y-12 Plant Biological Monitoring and Abatement Program (BMAP) Plan Y/TS-1613/R1.

Kszos, L., M. Peterson, M. G. Ryon, J. Smith, and G. Southworth. 1998. Report on the Biological Monitoring Program at Paducah Gaseous Diffusion Plant, January - December 1997. ORNL/TM-13592.

Ryon, M. G. 1998. Evaluation of Protected, Threatened, and Endangered Fish Species in Upper Bear Creek Watershed. ORNL/M-6567.

Ryon, M. G., A. J. Stewart, W. K. Roy, J. G. Smith, N. E. Korte, and M. Stites. 2000. Habitat, Water Quality, and Aquatic Community Assessment of Indian Creek and Blue River at the U.S. Department of Energy’s Kansas City Plant. ORNL/TM-2000/79. Oak Ridge National Laboratory.

Other Links