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Conserving Imperiled Aquatic Species in the UTRB
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A team of U.S. Fish and Wildlife Service scientists, with assistance from U.S. Geological Survey, have developed a collaborative conservation strategy examining cost-effective approaches for efforts to conserve and manage 36 imperiled freshwater fish and mussel species in the 22,360 square-mile Upper Tennessee River Basin.
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Training
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Videos and Webinars
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Biodiversity Hotspots and the UTRB
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Map depicting biodiversity hotspots in the eastern United States along with the boundary of the Upper Tennessee River Basin and USFWS National Wildlife Refuge locations.
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Maps
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Map of Federally Listed Aquatic Species in Virginia Portion of UTRB
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Map depicting listed and candidate aquatic species in the Upper Tennessee hydrologic sub-unit of Virginia.
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Maps
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Map of Federally Listed Species within the UTRB in Tennessee
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Map of Listed and candidate aquatic species in the Upper Tennessee hydrologic sub-unit of Tennessee.
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Maps
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Map of Federally Listed Species within the UTRB in North Carolina
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Map of Listed and candidate aquatic species in the Upper Tennessee hydrologic sub-unit of North Carolina.
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Maps
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Map of Listed, Proposed, and Candidate Fish in the UTRB
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Map depicting the number of listed, proposed, and candidate fish species within each 12-digit HUC within the Upper Tennessee River Basin. Occurrences include extant and historical records. Areas within the UTRB boundary not shaded by a color denoted in the key have no records of imperiled fish species occurrences.
Located in
Maps
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Map of Listed, Proposed, and Candidate Mussels in the UTRB
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Map depicting the number of listed, proposed, and candidate mussel species within each 12-digit HUC within the Upper Tennessee River Basin. Occurrences include extant and historical records. Areas within the UTRB boundary not shaded by a color in the key have no records of imperiled mussel species occurrences.
Located in
Maps
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Map of Listed, Proposed, and Candidate Fish and Mussels in the UTRB
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Map depicting the number of listed, proposed, and candidate fish and mussel species within each 12-digit HUC within the Upper Tennessee River Basin. Occurrences include extant and historical records. Areas within the UTRB boundary not shaded by a color in the key have no records of imperiled fish and mussel species occurrences.
Located in
Maps
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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.
Located in
Reports & Documents
