and L.D. Corkum. 1996. Assemblage structure of freshwater mussels (Bivalvia: Unionidae) in rivers with grassy and forested riparian zones. Journal of the North American Benthological Society 15: 576-586. Mueller, J.E. 1975. Restless River. Texas Western Press, El Paso. 153 pp. Nagel, K.-O. 1987. Untersuchungen an einer Najadenpopulation (Bivalvia:Unionidae) in einem Baggersee bei Kassel (Nordhessen). Philippia 5: 383-395. Nagel, K.-O. 1992. Das Schalenwachstum dreier Muschelarten (Bivalvia: Unionidae) in der Schwalm, einem nordhessischen Mittelgebirgsfluß. Decheniana 145: 165-176. Neck, R.W. and R.G. Howells. 1994. Status survey of Texas heelsplitter, Potamilus amphichaenus (Frierson, 1898). Unpublished report, Texas Parks and Wildlife Department, Resource Protection Division and Inland Fisheries Division, Austin. 47 pp. Neel, J.K. 1963. Impact of Reservoirs. Pages 575593. In: Frey, D.G. (editor): Limnology in North America. University of Wisconsin Press, Madison. 734 pp. Nelson, K.L. 1993. Instream sand and gravel mining. Pages 189-196, In: C.F. Bryan and D.A. Rutherford (editors), Impacts on warmwater streams: guidelines for evaluation. Southern Division, American Fisheries Society, Little Rock, Arkansas. 285 pp. Nelson, R.W., Dwyer, J.R., and W.E. Greenberg. 1987. Regulated flushing in a gravel-bed river for channel habitat maintenance: a Trinity River case study. Environmental Management 11: 479-493. Ortmann, A.E. 1918. The nayades (freshwater mussels) of the Upper Tennessee drainage. With notes on synonymy and distrbution. Proceedings of the American Philosophical Society 57: 521626. Ortmann, A.E. 1925. The naiad-fauna of the Tennessee River system below Walden Gorge. American Midland Naturalist 9(7): 321-372. Osborne, L.L. and D.A. Kovacic. 1993. Riparian vegetated buffer strips in water-quality restoration and stream management. Freshwater Biology 29: 243-258. Parmalee, P.W. and M.H. Hughes. 1993. Freshwater mussels
and L.D. Corkum. 1996. Assemblage structure of freshwater mussels (Bivalvia: Unionidae) in rivers with grassy and forested riparian zones. Journal of the North American Benthological Society 15: 576-586. Mueller, J.E. 1975. Restless River. Texas Western Press, El Paso. 153 pp. Nagel, K.-O. 1987. Untersuchungen an einer Najadenpopulation (Bivalvia:Unionidae) in einem Baggersee bei Kassel (Nordhessen). Philippia 5: 383-395. Nagel, K.-O. 1992. Das Schalenwachstum dreier Muschelarten (Bivalvia: Unionidae) in der Schwalm, einem nordhessischen Mittelgebirgsfluß. Decheniana 145: 165-176. Neck, R.W. and R.G. Howells. 1994. Status survey of Texas heelsplitter, Potamilus amphichaenus (Frierson, 1898). Unpublished report, Texas Parks and Wildlife Department, Resource Protection Division and Inland Fisheries Division, Austin. 47 pp. Neel, J.K. 1963. Impact of Reservoirs. Pages 575593. In: Frey, D.G. (editor): Limnology in North America. University of Wisconsin Press, Madison. 734 pp. Nelson, K.L. 1993. Instream sand and gravel mining. Pages 189-196, In: C.F. Bryan and D.A. Rutherford (editors), Impacts on warmwater streams: guidelines for evaluation. Southern Division, American Fisheries Society, Little Rock, Arkansas. 285 pp. Nelson, R.W., Dwyer, J.R., and W.E. Greenberg. 1987. Regulated flushing in a gravel-bed river for channel habitat maintenance: a Trinity River case study. Environmental Management 11: 479-493. Ortmann, A.E. 1918. The nayades (freshwater mussels) of the Upper Tennessee drainage. With notes on synonymy and distrbution. Proceedings of the American Philosophical Society 57: 521626. Ortmann, A.E. 1925. The naiad-fauna of the Tennessee River system below Walden Gorge. American Midland Naturalist 9(7): 321-372. Osborne, L.L. and D.A. Kovacic. 1993. Riparian vegetated buffer strips in water-quality restoration and stream management. Freshwater Biology 29: 243-258. Parmalee, P.W. and M.H. Hughes. 1993. Freshwater mussels