6Th Symposium Proceedings (1995)
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HELD AT BRANDONSPRING GROUP CAMP LANDBETWEEN THE L-s MARCH 3 AND 4,1995 Sponsored by: The Center for Field Biology Austin Peay State University, Clarksville, Tennessee and Center for Reservoir Research Murray State University, Murray, Kentucky and Tennessee Valley Authority - Land Between The Lakes Golden Pond, Kentucky EDITED BY: Steven W. ~amilton',David S. white2, Edwaid W. Chester1, and A. Floyd Scott1 'The Center of Field Biology 2 Center for Reservoir Research Published by and available from: The Center for Field Biology, Austin Peay State University, Clarksville, Tennessee 37044 Price: $5.00 SUGGESTED CITATION Hamilton, S.W., D. S. White, E.W. Chester and A.F. Scott. 1995. Proceedings of the sixth symposium on the natural history of lower Tennessee and Cumberland River Valleys. The Center for Field Biology, Austin Peay State University, Clarksville, Tennessee. Published November, 1995 PREFACE The Sixth Symposium on the Natural EWory of Lower Te~esseeand Cumberland River Valleys was held at Brandon Spring Group Camp in TVA's Land Between The Lakes on 3 and 4 March 1995. This biennial gathering of naturalists, field biologists, and others interested in related topics was sponsored by The Center for Field Biology at Austin Peay State University, the Center for Reservoir Research at Murray State University, and Land Between The Lakes. The symposium begau Friday afternoon with brief welcoming comments from representative of the three sponsoring institutions. Representing Austin Peay State University and The Center for Field Biology was its Director, Dr. Beqjamin P. Stone. Dr. David White, Director of the Hancock Biological Station, spoke on behalf of Dr. Gary Bogess, Dean of the College of Arts and Sciences at Murray State University. Mr. Richard Lowe, Specialist and Team Leader, represented LBL General Manager Ms. AM Wright. Three invited presentations related to the theme "Water Quality and the Exotic Biota" followed. The fmt speaker, Dr. John Barko, U.S. Army Corps of Engineers, Waterways Experiment Station, Vicksburg, Mississippi, treated the importance of nutrients to growth of submersed aquatic vegetation and the impact of that vegetation on nutrient transport from sediments to the water column. Besides effects of submersed vegetation on nutrient dynamics, Dr. Barko also spoke about the importance of these plants on the hydrology of aquatic ecosystems and their effect on sediment transport. Invasion of Lk7phni.a hmhohzi into Norris Reservoir in east Tennessee was the topic of the second report, presented :a :a by Dr. Ciyde Gulden. Dr. GouMe~f,Pbhlelphia Academy of Sciences, described the rapsd invasion of this exotic cladoceran in resemoirs across the southern United States and the concern over its potential impact on the rest of the zooplankton community and other aquatic communities dependent on zooplankton. According to Dr. Goulden, success of D. lumhohzi as an invader appears to be related to its ability at predator avoidance. This exotic daphniid does not appear to be affecting other daphniids adversely. The final presentation Friday afternoon, given by Dr. Gerald Mackie of the University of Guelph, Ontario, was an evaluation of the 23 species of exotic mollusks introduced to North American. This review included a comprehensive overview of the biological, chemical, and physical requirements of these species and the potential impact they have on the ecology and distribution of native species. Dr. Mackie evaluated adaptive features of the exotic species that might influence their success in regulated streams which have physical, chemical, and biological characteristics that are markedly different from unregulated streams and natural lakes. Written reports of all three presentations are included in these proceedings. Friday evening Dr. George Folkerts, Auburn University, gave an excellent lecture entitled "Aquatic and Wetland Habitats of the World: Fate and Future." While most were enthralled with the lecture content, the beautiful photographs illustrahg it, and the style and charisma of Dr. Folkerts, most admitted to a sense of sadness and foreboding at seeingthe precatious nature of these habitats. Dr. Folkerts illustrated this precarious situation with numerous species of plants and animals from around the world that are at the very brink of extinction due to habitat destruction. That it will take only a single disturbance event such as a toxic spill, a drainage canal or a dam to destroy some of these special ecosystems is deeply disturbing to most people. Dr. Folkerts left us with a powefi message, to be ever vigilant of political, economic and personal agendas that can lead rapidly to further losses of these habitats. It only takes one time to destroy forever what has required millions of years to evolve. Contributed papers were read Saturday morning. The large number of contributions necessitated holding three sessions. Session I, entitled "Aquatic Biology and Water Quality" had 11 presentations and was moderated by Dr. Steven Hamilton, Austin Peay State University. Session 11, "Aquatic Biology and Zoology," with 12 talks, was moderated by Dr. James Sickle, Murray State University. Moderating the 14 reports in Session III, "Botany ," was Dr. Edward W. Chester, Austin Peay State University. Contributors were invited to publish an abstract, short communication, or full paper in these proceedings. While most opted to publish only an abstract, nine full length papers are presented in these proceedings, two from Session I and seven from Session III. The style and format of these proceedings follow that established in previous proceedings of these symposia. Drs. White and Hamilton organized and edited the Invited Papers; Dr. Hamilton edited abstracts and papers from Session I; Dr. Scott, The Center for Field Biology, edited abstracts in session II; and Dr. Chester edited abstracts and papers from Session lII. Dr. Hamilton brought all these papers together into the fmal format. ACKNOWLEDGMENTS The editors thank Ms. Marilyn Griffy and Ms. Natasha Emmons for assistance in organizing and coordinating activities leading up to and throughout the symposium. We also recognize the participation of many APSU Center for Field Biology undergraduate and graduate research assistants for their help before and during this biennial event. Many abstracts and manuscripts were typed and corrected by Ms. Griffy, who also saw to details of the proceedings front matter. Ms. Laurina Lyle provided assistance with the proceedings cover. The help of these individuals and others forgotten was critical to the success of this symposium and completion of these pmu&ings. All complete manuscripts were reviewed fully. We appreciate the comments of all reviewers as this process greatly enhances the quality of these proceedings. While we (the editors) would wish this publication to be error free, most likely it is not and for this we assume responsibility. SYMPOSIUM REGISTRANTS Following, in alphabetical order, is a list of those individuals who registered at the 1995 symposium. Institutional affiliation (when available), city (of the person's institution or home), and state are also given. Buford Anderson, Murray State University, Murray, Kentucky; Mariselva Avila, Kentucky Wesleyan College, Owensboro, Kentucky; E. A. Babunmi, Lagos State University, Nigeria; Brainard Palmer-Ball, Kentucky Nature Preserves, Fraddort, Kentucky; John Barko, U.S. Army Corps of Engineers, Vicksburg, Mississippi; Joseph Bmes, Vanderbilt University, Nashville, Tennessee; Randall Barnes, Austin Peay State University, Clarksville, Tennessee; Andrew Barrass, Tennessee Department of Environment and Conservation, Nashville, TN; Carol Baskin, University of Kentucky, Lexington, Kentucky; Jerry Baskin, University of Kentucky, Lexington, Kentucky; Randy Bassett, Kentucky Wesleyan College, Owensboro, Kentucky; Paul Bates, Kentucky Wesleyan College, Owenboro, Kentucky; Jeanne Beals, Austin Peay State University, Clarksville, Tennessee; Jane Bensen, Murray State University, Murray, Kentucky; George Benz, Tennessee Aquarium, Chattanooga, Tennessee; Holly Blalock, Murray State University, Murray, Kentucky; Alan Bottomlee, Austin Peay State University, Clarksville, Tennessee; Richard Brown, Austin Peay State University, Clarksville, Tennessee; Kevin Buchanan, Austin Peay State University, Clarksville, Tennessee; Angelo Bufalino, Austin Peay State University, Clarksville, Tennessee; Willodean Burton, Austin Peay State University, Clarksville, Tennessee; John Butler, Aush Peay Slate University, Clarksville, Tennessee; David Campbell, The Nature Conservancy, Nashville, Tennessee; Edward W. Chester, Austin Peay State University, Clarksville, Tennessee; David Close, Southern Illinois University, Carbondale, IL; Dave Collins, Tennessee Aquarium, Chattanooga, TN; Michelle Costner, Austin Peay State University, Clarksville, TN; C. R. Crossett, Union University, Jackson, Tennessee; Dylan Crouch, Kentucky Wesleyan College, Owensboro, Kentucky; Allen Culp, The Nature Conservancy, Nashville, Tennessee; Don Dailey, Austin Peay State University, Clarksville, Tennessee; Hal DeSelm, University of Tennessee, Knoxville, Tennessee; Mike - DiEmo, Murray State University, Murray, Kentucky; L. Dubonis-Gray; Murray State University, Murray, Kentucky; Agnes Ellis, Clarksville High School, Clarksville, Tennessee; William Ellis, Austin Peay State University, Clarksvitle, Tennessee; Natascha Emmons, Austin Peay State University, Clarksville, Tennessee; Jeremy Faulk, Austin Peay State University, Clarksville,