Tennessee Staff Member
Dr. James Layzer
Unit Leader
Phone: (931) 372 - 3032
Email: jim_layzer@tntech.edu
Education
- Ph D Oklahoma State University 1982
- MS University of Massachusetts 1974
- BS University of Massachusetts 1971
Biography
BS and MS degrees, University of Massachusetts; PhD, Oklahoma State University. Curently holds the rank of Professor in the Department of Biology and Unit Leader of the Tennessee Unit.. Ecology of mussels and restoration of imperiled fish and mussels in regulated rivers. Environmental flows.. Malacology
Research Publications | Publication Date |
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Weber, A.S. and J.B. Layzer. 2011. A comparison of turtle sampling methods in a small lake in Standing Stone State Park, Overton County, Tennessee. Journal of the Tennessee Academy of Science. | January 2011 |
Strayer, D. L., J. A. Downing, W. R. Haag, T. L. King, J. B. Layzer, T. J. Newton, and S. J. Nichols. 2004. Changing perspectives on pearly mussels, North America's most imperiled animals. Bioscience 54:429-439. | May 2004 |
Simmons, J. W., and J. B. Layzer. 2004. Spawning behavior and habitat of the endangered bluemask darter, Etheostoma (Doration) sp. Copeia 2004(2):412-417. | May 2004 |
Simmons, J. W., J. B. Layzer, and D. D. Smith. 2008. Age-class structure and variability of two populations of the Bluemask darter Etheostoma (Doration) sp. American Midland Naturalist. 160:300-309 | May 2008 |
Saha, S., and J. B. Layzer. 2008. Evaluation of a nonlethal technique for determining sex of freshwater mussels. Journal of the North American Benthological Society, 27(1):84-89 | March 2008 |
Moles, K. R., and J. B. Layzer 2008. Reproductive ecology of Actinonaias ligamentina (Bivalvia: Unionidae) in a regulated river. Journal of the North American Benthological Society, 27(1):212-222. | January 2008 |
Moles, K. R., N. T. Welte, and J. B. Layzer. 2007. The mussel fauna of the Wolf River, Fentress and Picket Counties, Tennessee. Journal of the Tennessee Academy of Science. 82:77-82. | September 2007 |
Life history of the fluted kidneyshell Ptychobranchus subtentum. American Midland Naturalist 167:79-95. | January 2012 |
Layzer, J. B., and T. R. Brady. 2003. Summer microhabitat of the endangered bluemask darter Etheostoma (Doration) sp. Journal of the Tennessee Academy of Science 78(2):55-57. | October 2003 |
Layzer, J. B., and J. R. Khym. 2005. Fish hosts for glochidia of the pheasantshell (Actinonaias pectorosa). Walkerana. 14(31):79-85. | May 2005 |
Layzer, J. B., and J. R. Heinricher. 2004. Coded wire tag retention in ebonyshell mussels Fusconaia ebena. North American Journal of Fisheries Management 24:228-230. | January 2004 |
Layzer, J. B., B. Adair, S. Saha, and L. M. Woods. 2003. Glochidial hosts and other aspects of the life history of the Cumberland pigtoe (Pleurobema gibberum). Southeastern Naturalist 2(1):73-84. | January 2003 |
Layzer, J. B. 2002. Status of the Freshwater Mussel Fauna in the Green River within the Mammoth Cave National Park - A preliminary Assessment. Pages 51-53 in:9th Mammoth Cave Science Conference, Mammoth Cave, KY. October 10-11. | October 2002 |
Layzer, J. B. 2001. Status of the freshwater mussel fauna in the Green River within Mammoth Cave National Park - A preliminary assessment. Proceedings of the 9th Mammoth Cave Science Conference | September 2002 |
Khym, J. R., and J. B. Layzer. 2000. Host fish suitability for glochidia of Ligumia recta. American Midland Naturalist. 143:178-184 | January 2000 |
J. B. Layzer and E. M. Scott, Jr. 2006. Restoration and colonization of freshwater mussels and fish in a southeastern United States tailwater. River Research & Applications. 22:475-491 | May 2006 |
Hersey, K.A., J.D. Clark, and J.B. Layzer. Consumption of freshwater bivalves by muskrats in the Green River, Kentucky. | September 2013 |
Hardison, B. S., and J. B. Layzer. 2001. Relations between complex hydraulics and the localized distribution of mussels in three regulated rivers. Regulated Rivers: Research & Management 17:77-84 | January 2001 |
Gore, J. A., J. B. Layzer, and J. Mead. 2001. Macroinvertebrate instream flow studies after 20 years; a role in stream management and restoration. Regulated Rivers: Research & Management 17:527-542 | September 2001 |
Ehlo, C. A. and J. B. Layzer. Population demographics and life history of the round hickorynut Obovaria subrotunda in the Duck River, Tennessee. American Midland Naturalist. | July 2013 |
Eads, C. B., and J. B. Layzer. 2002. How to pick your mussels out of a crowd: using fluorescence to mark juvenile mussels. J. N. Am. Benthol. Soc. 21:476-486 | September 2002 |
Ashton, M.J. and J.B. Layzer. 2010. Summer microhabitat use by adult and young-of-year snail darters (Percina tanasi) in two rivers. Ecology of Freshwater Fish. doi:10.1111/j.1600-0633.2010.00442.x | July 2010 |
Ashton, M., and J. B. Layzer. 2008. Distribution of the threatened snail darter (Percina tanasi) in the upper Tennessee River drainage. Journal of the Tennessee Academy of Science 83:52-56. | July 2008 |
Presentations | Presentation Date |
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Life History of the Cumberland Papershell Anodontoides denigrata. Tyler R. Hern and James B. Layzer. Freshwater Mollusk Conservation Society Symposium. Guntersville, Alabama. | March 2013 |
Kendall R.Moles and James B. Layzer. Reintroduction of mussels into the Calderwood bypass of the Little Tennessee River. A case of fraternizing with the enemy? . Freshwater Mollusk Conservation Society Symposium. Guntersville, Alabama. | March 2013 |
Foley, R. P. and J. B. Layzer. 2013. ANNULUS DEPOSITION AND INTRA-ANNULAR GROWTH OF Epioblasma ahlstedti AND Lemiox rimosus IN THE DUCK RIVER, TENNESSEE. Freshwater Mollusk Conservation Society Symposium. Guntersville, Alabama. | March 2013 |
Technical Publications | Publication Date |
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Smith, E.K., J. Gunderson, and J.B. Layzer. 2006. Gene flow among seemingly isolated populations of the endangered bluemask darter, Etheostoma (Doration) sp. Final Report, Tennessee Wildlife Resources Agency, Nashville, Tennessee. 61pp. | September 2006 |
S.L. Surgenor and J.B. Layzer. 2003. Survival of artificially propagated juvenile mussels. Final Report, Tennessee Wildlife Resources Agency, Nashville, TN. 52pp. | December 2003 |
Martin, R. and J.B. Layzer. 2001. Movements, habitat use, and survival of captive-reared lake sturgeon (Acipenser fulvescens) released into the upper Tennessee river system. Final Report submitted to USGS, Biological Resources Division. 68p | December 2001 |
Layzer, J.B., T.R. Brady, and L.M. Madison. 2002. Propagation of endangered mussels at fish hatcheries. Final Report, U.S. Fish and Wildlife Service. 78pp. | September 2006 |
Layzer, J.B., E.M. Scott, Jr., J.M. Howard, and J.K. Farmer. 2004. Reintroduction of freshwater mussels into the Tennessee River and its major tributaries. Final Report, U.S. Geological Survey, Tennessee Cooperative Fishery Research Unit, Cookeville, Tennessee. 157pp. | January 2004 |
Layzer, J.B., D.L. Ragland, and L.M. Madison. 2004. Reintroduction of endangered mussels and perfection of methods for the establishment of experimental populations. Final Report, Alabama Department of Conservation and Natural Resources. 49pp. | September 2006 |
Layzer, J.B., B. Adair, S. Saha, LM. Woods, and T.R. Brady. 2002. Life history of the Bluemask darter and the Cumberland pigtoe, Phase I: Microhabitats and Host Identification. Final Report submitted to U.S. Fish and Wildlife Service, Cookeville, TN. 31p | June 2002 |
Layzer, J.B. and K. Moles. 2009. Reintroduction of the rayed bean (Villosa fabalis) into the Duck River. U.S. Fish and Wildlife Service. College Station, PA. | September 2009 |
Layzer, J.B. and K. Moles. 2009. Assessment of the fish and mussel communities in the Glenview Nature Preserve on the Green River. Green County, KY. | September 2009 |
Layzer, J.B. and J.W. Simmons. 2004. Structure and stability of bluemask darter populations. Final report, U.S. Fish and Wildlife Service. 60pp. | September 2006 |
Layzer, J.B. 2004. Enhancement of endangered mussels in Horse Lick Creek. Final Report, Kentucky Department of Fish and Wildlife Resources. 15pp. | September 2006 |
Layzer, J.B. 2000. Book Review - Instream flow protection: Seeking a balance in western water use. By D.M. Gillilan and T.C. Brown. Island Press, Washington, DC. 1997. 410pp. In: Fisheries 25(1):42 | August 2001 |
Layzer, J.B. 2009. Relationship between stream discharge and recruitment of the Cumberland Elktoe (Alasmidonta atropurpurea). The Nature Conservancy. Tennessee. | September 2009 |
Layzer, J.B. 2004. Recovery of the endangered Ringpink Obovaia retusa. Final Report, U.S. Army Corps of Engineers. 4p. | September 2006 |
Layzer, J.B. 2004. Maintenance of captive populations of endangered freshwater mussels. Final Report, Tennessee Wildlife Resources Agency, Nashville, Tennessee. 5p. | September 2006 |
Brady, T.R., A.L. Currie, and J.B. Layzer. 2003. Development and transfer of technology to propagate and culture mussels at the Dale Hollow and Wolf Creek National Fish Hatcheries. Final Report, U.S. Fish and Wildlife Service, Cookeville, Tennessee. 15pp. | February 2003 |
Role and Organization | Individual | Start Date | End Date |
---|---|---|---|
Tennessee Academy of Science - Member | Layzer | January 1990 | Present |
Other - Program Committee | Layzer | January 2008 | July 2009 |
Other - Invited member to the Scientific Advisory Committee for the 3rd Biennial Symposium of International Society for River Science to be held August 5- 9, 2013 in Beijing, China | Layzer | October 2012 | Present |
North American Benthological Society - Member | Layzer | January 1993 | Present |
Freshwater Mollusk Conservation Society - Member | Layzer | January 2004 | Present |
American Society of Ichthyologists and Herpetologists - Member | Layzer | January 1981 | December 2010 |
American Malacological Society - Member | Layzer | January 1996 | January 2003 |
American Fisheries Society - President, Tennessee Chapter | Layzer | March 2004 | March 2005 |
American Fisheries Society - Member | Layzer | January 1970 | Present |