Perry, Stephen

Riparian Restoration Decision Support Tool: An innovative riparian planting and restoration decision support tool, this user-friendly tool allows managers and decision-makers to rapidly identify and prioritize areas along the banks of rivers, streams, and lakes for restoration, making these ecosystems more resilient to disturbance and future changes in climate.
Located in Science and Data / Data and Brook Trout Decision Support Tools
EBTJV Memorandum of Understanding: EBTJV MOU_2018
Located in About EBTJV / EBTJV Management
Get to Know Your Native Brook Trout Poster: PDF version of a Brook Trout Poster developed by Trout Unlimited's Native Trout Workgroup and was provided funding support by the EBTJV.
Located in Groups / Outreach and Education Committee / Outreach Materials
EBTJV Key Conservation Actions: This documents contains the EBTJV's current key conservation actions.
Located in Projects / … / 2023 Project Application Information / EBTJV Range-wide Habitat Goals, Objectives, and Key Conservation Actions
EBTJV Range-wide Habitat Goals and Objectives: This document contains the EBTJV's current range-wide habitat goals and objectives.
Located in Projects / … / 2023 Project Application Information / EBTJV Range-wide Habitat Goals, Objectives, and Key Conservation Actions
EBTJV Key Conservation Actions: This documents contains the EBTJV's current key conservation actions.
Located in Projects / … / 2024 Project Application Information / EBTJV Range-wide Habitat Goals, Objectives, and Key Conservation Actions
EBTJV Range-wide Habitat Goals and Objectives: This document contains the EBTJV's current range-wide habitat goals and objectives.
Located in Projects / … / 2024 Project Application Information / EBTJV Range-wide Habitat Goals, Objectives, and Key Conservation Actions
The use of environmental (eDNA) to inform fish eradication efforts to restore native aquatic species.: 30 minute webinar
Located in The Story of Wild Brook Trout / Brook Trout Video and Webinar Gallery
Environmental DNA Sampling Informs Fish Eradication Efforts: Case Studies and Lessons Learned: Worldwide, freshwater ecosystems are threatened by invasive species, resulting in adverse effects on infrastructure, economy, recreation, and native aquatic communities. In stream settings, chemical piscicides can be an effective tool for eradicating invasive fishes. However, chemical treatments are expensive and time consuming, and they do not discriminate between invasive and native species in a system. Therefore, managers would ideally limit treatment to only the area occupied by the invasive species. Because traditional survey methods may not accurately detect individuals in low abundance (e.g., at the edge of their distribution, or following an eradication effort), chemical treatments may be applied more broadly and more often than is necessary to ensure complete coverage. Furthermore, inadequate post-treatment sampling can fail to detect survivors of a treatment. As a result, managers may erroneously conclude that eradication was successful, leaving the ecosystem vulnerable to reestablishment by the invader. More sensitive sampling tools should allow for more precise definition of the treatment area and more accurate evaluation of project success. This would reduce project costs and overall effects on native species. Here, we illustrate how environmental DNA (eDNA) sampling addressed these challenges through three case studies, each of which used eDNA sampling to inform the removal of Brook Trout Salvelinus fontinalis in small streams. We found that eDNA methods can be informative throughout all stages of eradication projects in stream settings. It can assist with delimiting the population prior to treatment, provide detailed location data on surviving target individuals, and serve as an efficient and relatively inexpensive monitoring tool to assess long-term treatment efficacy. When combined with traditional survey tools, such as electrofishing, eDNA sampling may help reduce the size and number of treatments that are necessary to reach project goals. This translates directly to increased efficacy of treatments, reduced labor and cost, and reduced adverse effects on the native community.
Located in Science and Data / Brook Trout Related Publications
An updated geographic distribution of Myxobolus cerebralis (Hofer, 1903) (Bivalvulida: Myxobolidae) and the first diagnosed case of whirling disease in wild-caught trout in the south-eastern United States: Myxobolus cerebralis (Bivalvulida: Myxobolidae), the aetiological agent of salmonid whirling disease, was detected in 2 river basins of North Carolina during 2015, which initiated the largest spatial–temporal monitoring project for the disease ever conducted within the south-eastern United States (focused mainly in eastern Tennessee and western North Carolina). A total of 2072 rainbow trout Oncorhynchus mykiss, 1,004 brown trout Salmo trutta and 468 brook trout Salvelinus fontinalis were screened from 113 localities within 7 river basins during June 2017 through October 2019. Infections were detected by pepsin–trypsin digest, microscopy and the species-specific nested polymerase chain reaction (PCR) in 19 localities across 6 river basins. Myxospore morphology was indistinguishable from the published literature. In 2019, five rainbow trout that symptomatic for whirling disease (sloping neurocranium and lordosis) were captured and processed for histopathology. Myxospores were detected in the calvarial cartilage of two deformed trout with associated erosion of the cartilage consistent with reported whirling disease lesions. This is the first report of M. cerebralis in Tennessee and the first histologically confirmed cases of whirling disease in southern Appalachian (south-eastern United States) rivers and streams and expands the distribution of M. cerebralis throughout western North Carolina and eastern Tennessee.
Located in Science and Data / Brook Trout Related Publications

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