18 Emerging Issues Affecting Functional Connectivity Within and Among Riverine, Lacustrine, and Marine Fish Populations - Day 2

Tuesday, September 14, 2010: 8:00 AM-12:00 PM
403 (Convention Center)
The theme of the 140th meeting of AFS, “Merging our Deeper Currents”, reminds us that fundamental connections exist between the physical and biotic processes characterizing aquatic systems or populations. Organisms are often studied and managed without an understanding of the spatial and temporal scales over which connections exist.  Natural physical and biotic processes affect the degree of connectivity among populations and can impose barriers to dispersal or reproduction.  Human-imposed alterations of aquatic systems have effects on natural patterns and the permeability of seemingly contiguous aquatic habitats.  In addition, systems are often segmented to simplify inherent complexities in order to understand and manage systems.  Imposed segmentation is reflected in broad divisions such as separating freshwater and marine environments, or in finer divisions like defining populations or management units.  However, as divisions become established, the understanding of connectivity among the separate parts can be obscured or lost.  Individuals can move between environments and populations, blurring predefined boundaries.  Molecular genetic techniques have been used as a tool by fisheries researchers and managers for investigating causal relationships between natural processes, human actions, and the spatial structuring of aquatic organisms, often across geographic, political, or species boundaries.  Management issues addressed by papers in this symposium include: a) management to maintain population structure and long-term viability, b) developing strategies for restoring lost or impacted populations, c) assessing the effect of sport and commercial fisheries, d) measuring the extent and effects of human-induced versus natural processes on individual or species distributions, e) maintaining population adaptive potential for future conditions, and f) incorporating uncertainty when management decisions must be made with limited data.  This symposium will provide a valuable review of the current uses of genetic, demographic, and hydrogeomorphological data to connect sources of knowledge to increase the ability of managers to provide science-based stewardship of fish resources.
William D. Templin and Ron Essig
Kim Scribner, PhD , Ron Essig , Joe Margraf, PhD , Meredith Bartron, PhD and William D. Templin
8:00 AM
Effects of dams, reservoirs, and tailwaters on functional connectivity in the upper Tennessee River basin
James H. Roberts, Virginia Tech; Eric M. Hallerman, Virginia Tech; Jess W. Jones, U.S. Fish and Wildlife Service, Virginia Field Office; Paul L. Angermeier, PhD, U.S. Geological Survey, Virginia Cooperative Fish and Wildlife Research Unit
8:20 AM
Fine-scale landscape genetic structure of brook trout in headwater stream networks in Connecticut
Yoichiro Kanno, University of Connecticut; Jason C. Vokoun, PhD, University of Connecticut; Benjamin Letcher, PhD, U.S. Geological Survey
8:40 AM
Combining ecological and genetic studies to inform brook trout restoration
J. Todd Petty, Ph.D., West Virginia University; Tim L. King, Ph.D., U.S. Geological Survey; Patricia M. Mazik, PhD, U.S. Geological Survey, West Virginia University
9:00 AM
Natural selection for better or worse: Selection analyses as a tool for endangered fish restoration
Michael M. Bailey, PhD, U.S. Fish and Wildlife Service; Michael T. Kinnison, PhD, University of Maine
9:20 AM
Modeling brook trout genetic response to population isolation
Meredith Bartron, PhD, U.S. Fish and Wildlife Service; John Sweka, U.S. Fish and Wildlife Service; Shannon Julian, U.S. Fish and Wildlife Service; Jeff Kalie, U.S. Fish and Wildlife Service; Jason Detar, Pennsylvania Fish and Boat Commission
9:40 AM
Islands in the stream: Genetic analysis of brook trout population structure and demographics reveals a high degree of population fragmentation and prodigious differentiation within and among streams
Tim L. King, Ph.D., U.S. Geological Survey; S. Moore, National Park Service; J. Wofford, National Park Service; M. Kulp, National Park Service; J. Todd Petty, Ph.D., West Virginia University; R. Morgan, University of Maryland
10:00 AM
10:20 AM
Temporal and spatial connectivity and divergence among river and reef spawning groups of walleye: Patterns across 15 years
Carol A. Stepien, Ph.D., University of Toledo's Lake Erie Center; JoAnn Banda, University of Toledo's Lake Erie Center; Douglas J. Murphy, M.S., University of Toledo; Amanda Haponski, University of Toledo's Lake Erie Center
10:40 AM
Genetic structure between isolated populations of the federally endangered amber darter (Percina antesella)
Beth Dakin, PhD, Duquesne University; Byron Freeman, PhD, University of Georgia; Brady Porter, PhD, Duquesne University
11:00 AM
Genetic assessment of dispersal rates for wild and hatchery lake sturgeon and occupancy of riverine habitats during non-spawning periods
Jared J. Homola, Michigan State University; Kim T. Scribner, PhD, Michigan State University; Robert F. Elliott, U.S. Fish and Wildlife Service; Michael C. Donofrio, Wisconsin Department of Natural Resources; Edward A. Baker, PhD, Michigan Department of Natural Resources and Environment; Nancy A. Auer, PhD, Michigan Technological University
11:20 AM
Invasion genetics of the blue catfish (Ictalurus furcatus) range expansion into large river ecosystems of the Chesapeake Bay watershed
Colleen B. Higgins, M.S., Virginia Commonwealth University; Bonnie L. Brown, PhD, Virginia Commonwealth University
11:40 AM
Range-wide population structure in a long-lived species and implications for management
Michael E. Douglas, PhD, Illinois Natural History Survey; Marlis R. Douglas, Illinois Natural History Survey; Matthew Hopken, MS, Illinois Natural History Survey
See more of: Symposium Submissions