EBTJV

Lynn Camp Prong, Tennessee: One of the top stressors to thriving brook trout populations is their inability to successfully compete for food and space with other, non-native (exotic) trout species such as brown and rainbow trout and warm water species such as small mouth bass. Balancing the needs of multiple fish user groups presents a unique set of challenges in developing strategies to address declines in brook trout populations due to competition from these species. Steve Moore, Fishery Biologist for the National Park Service is leading a partnership to eliminate non-native trout species from Lynn Camp Prong in the Great Smoky Mountains State Park. This effort focuses on the use of chemical means to eliminate rainbow trout from the stream. A natural barrier at the lower end of Lynn Camp Prong will exclude rainbow trout from stream. Approximately 8 miles of stream will be restored allowing brook trout to re-inhabit the stream without the challenge of competing trout species.
Located in Projects / 2006 - 2018 Projects / 2007 Projects
Lynn Camp Prong, Tennessee: One of the top stressors to thriving brook trout populations is their inability to successfully compete for food and space with other, non-native (exotic) trout species such as brown and rainbow trout and warm water species such as small mouth bass. Balancing the needs of multiple fish user groups presents a unique set of challenges in developing strategies to address declines in brook trout populations due to competition from these species. Steve Moore, Fishery Biologist for the National Park Service is leading a partnership to eliminate non-native trout species from Lynn Camp Prong in the Great Smoky Mountains State Park. This effort focuses on the use of chemical means to eliminate rainbow trout from the stream. A natural barrier at the lower end of Lynn Camp Prong will exclude rainbow trout from stream. Approximately 8 miles of stream will be restored allowing brook trout to re-inhabit the stream without the challenge of competing trout species.
Located in Funded Projects / EBTJV Projects
Oyster Reef Shoreline Restoration and Stabilization, MacDill AFB, FL: Over the past decade, the eastern shoreline of MacDill AFB has eroded, resulting in loss of native plant species such as black mangroves, palms, and 100-year-old live oaks. A five-phase project to stabilize the shoreline is creating a series of oyster reefs along undeveloped shoreline. The resultant oyster and mussel colonies will filter water and provide valuable habitat for fish and other aquatic resources. The reduced wave energy and accumulated sediment will encourage growth of native marsh grasses and mangroves, which will further stabilize the shoreline and improve the habitat.
Located in Funded Projects / SARP Projects W2B
Population Response to Habitat Fragmentation in a Stream-Dwelling Brook Trout Population: Fragmentation can strongly influence population persistence and expression of life-history strategies in spatially-structured populations. In this study, we directly estimated size-specific dispersal, growth, and survival of stream-dwelling brook trout in a stream network with connected and naturally-isolated tributaries. We used multiple-generation, individual-based data to develop and parameterize a size-class and location-based population projection model, allowing us to test effects of fragmentation on population dynamics at local (i.e., subpopulation) and system-wide (i.e., metapopulation) scales, and to identify demographic rates which influence the persistence of isolated and fragmented populations. In the naturally-isolated tributary, persistence was associated with higher early juvenile survival (,45% greater), shorter generation time (one-half) and strong selection against large body size compared to the open system, resulting in a stage-distribution skewed towards younger, smaller fish. Simulating barriers to upstream migration into two currently-connected tributary populations caused rapid (2–6 generations) local extinction. These local extinctions in turn increased the likelihood of system-wide extinction, as tributaries could no longer function as population sources. Extinction could be prevented in the open system if sufficient immigrants from downstream areas were available, but the influx of individuals necessary to counteract fragmentation effects was high (7–46% of the total population annually). In the absence of sufficient immigration, a demographic change (higher early survival characteristic of the isolated tributary) was also sufficient to rescue the population from fragmentation, suggesting that the observed differences in size distributions between the naturally-isolated and open system may reflect an evolutionary response to isolation. Combined with strong genetic divergence between the isolated tributary and open system, these results suggest that local adaptation can ‘rescue’ isolated populations, particularly in one-dimensional stream networks where both natural and anthropogenically-mediated isolation is common. However, whether rescue will occur before extinction depends critically on the race between adaptation and reduced survival in response to fragmentation.
Located in Science and Data / Brook Trout Related Publications
Raven Rock Dam Removal, Maryland: This project will remove the Raven Rock Dam in Maryland to restore brook trout access to nearly 1 mile of habitat in Raven Rock Creek. Removal of the dam will provide ecological benefits by restoring the connectivity and improving the quality of aquatic resources in Raven Rock Creek. The project will also provide economic benefits by increasing valuable recreational fishing opportunities.
Located in Projects / 2006 - 2018 Projects / 2007 Projects
Raven Rock Dam Removal, Maryland: This project will remove the Raven Rock Dam in Maryland to restore brook trout access to nearly 1 mile of habitat in Raven Rock Creek. Removal of the dam will provide ecological benefits by restoring the connectivity and improving the quality of aquatic resources in Raven Rock Creek. The project will also provide economic benefits by increasing valuable recreational fishing opportunities.
Located in Funded Projects / EBTJV Projects
Reintroduction of Native Brook Trout into Indian Flats Prong, Great Smoky Mountains National Park: Brook trout, the only salmonid native to the southeast, have lost about 75% of their historic range due to past logging activities and introduction of non-native trout. In 1993, the National Park Service identified 10 streams that can support native southern Appalachian brook trout (Salvelinus fontinalis). The long term goal is to restore historic range of habitat for this native species.
Located in Funded Projects / SARP Projects W2B
Restoration of Critical Habitat for LIsted Mussels and Fish, Big South Fork NRRA, TN/KY: The Big South Fork National River and Recreation Area is a focus for major conservation efforts due to the outstanding aquatic features found in the Big South Fork of the Cumberland River. The park is also a favorite location for equestrian riders, cyclists, and hikers. Managing a park for such multiple uses, while conserving biodiversity, is wrought with challenges.
Located in Funded Projects / SARP Projects W2B
Restoring Brook Trout to Aaron Run, Maryland: Project will remediate chronic habitat and water quality problems resulting from historic acid mine drainage (AMD) sources and agricultural practices in four miles of Aaron Run, allowing for the reestablishment of an extirpated native brook trout population. Remediation will also benefit brook trout habitat in the lower Savage River and the upper North Branch Potomac River, and reestablish historic population connections.
Located in Projects / 2006 - 2018 Projects / 2007 Projects
Restoring Brook Trout to Aaron Run, Maryland: Project will remediate chronic habitat and water quality problems resulting from historic acid mine drainage (AMD) sources and agricultural practices in four miles of Aaron Run, allowing for the reestablishment of an extirpated native brook trout population. Remediation will also benefit brook trout habitat in the lower Savage River and the upper North Branch Potomac River, and reestablish historic population connections.
Located in Funded Projects / EBTJV Projects

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