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Population Performance Criteria to Evaluate Reintroduction and Recovery of Two Endangered Mussel Species, Epioblasma brevidens and Epioblasma capsaeformis
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Genetic and demographic modeling of two endangered mussel species, Epioblasma brevidens and E. capsaeformis, in the Clinch River, U.S.A., was conducted to determine quantitative criteria to evaluate performance of extant and reintroduced populations. Reintroduction modelling indicated that the initial population size created during a 5 year build-up phase greatly affected final population size at 25 years, being similar to the population size at the end of the build-up phase, especially when population growth rate was low. Excluding age 0 individuals, age 1 juveniles or recruits on average comprised approximately 11% and 15% of a stable population of each species, respectively. Age-class distribution of a stable or growing population was characterized by multiple cohorts, including juvenile recruits, sub-adults, and adults. Because of current barriers to dispersal and the low dispersal capability of some mussel species, reintroductions will play a prominent role in restoring populations in the United States.
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Reports & Documents
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Hydrologic Units within the Tennessee River Basin
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Unit name and total area (square miles) for 2, 4, 6, and 8 digit hydrologic units within the Tennessee River System.
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Reports & Documents
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Using a structured decision making process for strategic conservation of imperiled aquatic species in the Upper Tennessee River Basin
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Development of strategic conservation of imperiled species faces several large challenges, including uncertainty in species response to management actions, budgetary constraints that limit options, and issues with scaling expected conservation benefits from local to landscape levels and from single to multiple species. We used a structured decision making process and a multi-scale approach to identify a cost-effective conservation strategy for the imperiled aquatic species in the Upper Tennessee River Basin (UTRB), which face a variety of threats. The UTRB, which encompasses a landscape of 22,360 square miles primarily in Virginia, North Carolina, and Tennessee, harbors one of the most globally diverse assemblages of freshwater fishes and mussels occurring at temperate latitudes. In developing the strategy, we sought to identify which management actions to emphasize to best achieve recovery of imperiled aquatic species, given costs and uncertainty in management effectiveness. The strategy was developed for conservation implementation over a 20-year period, with periodic review and revision. In this presentation, we describe the ecological significance of the UTRB, the planning process, and the resulting strategy. A strategic emphasis on population management emerged as the optimal approach for achieving conservation of imperiled aquatic species in the UTRB, which aligns well with the goals of existing plans for conserving and recovering imperiled fishes and mussels in the UTRB. The structured planning process and resulting conservation strategy dovetail with the landscape approach to conservation embodied in the USFWS’s strategic habitat conservation approach and network of Landscape Conservation Cooperatives.
The recorded webinar is also available for viewing at the following link: http://www.fws.gov/northeast/science/seminars/July2015.html.
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News & Information
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Webinars and Presentations
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UTRB Imperiled Aquatic Species Conservation Strategy Presentaion - Schulz 2015
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Powerpoint presentation of an overiew of the Imperiled Aquatic Species Strategy for the Upper Tennessee River Basin presented by Cindy Schulz on January 30, 2015.
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News & Information
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Webinars and Presentations
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Upper Tennessee River Basin Strategy Communications Subteam - March 2016 Call
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Notes from the Upper Tennessee River Basin Strategy Communications subteam call on March 7, 2016.
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Team and Partner Workspace
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Communications
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NE CSC Fish Habitat Data Viewer Planning
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The PIs of the NE CSC funded project A Decisions Support Mapper for Conserving Stream Fish Habitats of the NE CSC Region, will be holding a Stakeholder’s webinar: "NE CSC Fish Habitat Data Viewer Planning".
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News & Events
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Events
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Conservation Connect LIVE
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In March we’ll venture underwater to learn about freshwater mussels, American eels, and the electrofishing technology used to study aquatic creatures.
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News & Events
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Events
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Appalachian LCC Research Update: Phase II of Landscape Conservation Design
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Dr. Paul Leonard of Clemson University will provide a research update to the Appalachian LCC Steering Committee and interested partners on the results from Phase II of our Landscape Conservation Design.
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News & Events
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Events
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Southeast Aquatic Resources Conservation Science and Practice Webinar Series
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Sound sheds light: How side scan sonar helps advance the aquatic conservation mission
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News & Events
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Events
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The Southeast Aquatic Conservation Strategy
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The Southeastern Aquatic Biodiversity Conservation Strategy is a joint project of the UGA River Basin Center and the Tennessee Aquarium Conservation Institute to prioritize watersheds within the region to support future conservation investments.
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News & Events
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Events
