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Trout Unlimited Brook Trout Atlas
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The following interactive atlases provide a means to explore mapped data related to brook trout populations, habitats, and threats in local watersheds and across their eastern range.
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Learning & Tech Transfer
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Apps, Maps, & Data
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Brook Trout Conservation Portfolio and Range-wide Assessment
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Interactive webmap and visualization tools.
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Learning & Tech Transfer
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Apps, Maps, & Data
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Brook Trout Thermal Habitat Forecasts Catoctin Mountain Park, Maryland & Shenandoah Valley, Virginia
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Users can zoom-in to an area of interest and then compare current conditions against various future scenarios (3 levels of air temperature change x 3 levels of GW sensitivity to air temperature change). The interpretation is simple: red sites are too warm (MWAT > 23 C) and blue sites have suitable temperatures.
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Learning & Tech Transfer
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Apps, Maps, & Data
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Reintroduction of Native Brook Trout into Indian Flats Prong, Great Smoky Mountains National Park
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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.
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Resources
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Whitewater to Bluewater W2B
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Central Appalachian Climate Change Vulnerability Species Assessments
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These results are a compilation of climate change vulnerability assessments in the northern-most portion of the LCC, covering the area from New York south to West Virginia and Virginia, west to Pennsylvania and eastern Ohio.
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Vulnerability
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Climate Change Vulnerability
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Vulnerability Assessment Foundational Data by Subregion
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Central Appalachian subregion climate change vulnerability species assessments Excel Spreadsheet
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These results are a compilation of climate change vulnerability assessments in the northern-most portion of the LCC, covering the area from New York south to West Virginia and Virginia, west to Pennsylvania and eastern Ohio. Results included are Byers and Norris 2011 (West Virginia); Furedi et al. 2011 (Pennsylvania), Ring et al. 2013 (New Jersey), Schlesinger et al. 2011 (New York); Virginia Division of Natural Heritage 2010 (Virginia). It also includes the results from species assessed as part of the current study (Sneddon et al. 2015).
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Vulnerability
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Climate Change Vulnerability
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Vulnerability Assessment Foundational Data by Subregion
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Sour Streams in Appalachia: Mapping Nature’s Buffer Against Sulfur Deposition
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Sulfur emissions are regulated by the Environmental Protection Agency, but sulfuric acid that has
leached into soil and streams can linger in the environment and harm vegetation and aquatic life. Some
watersheds are better able to buffer streams against acidification than others; scientists learned why in
southern Appalachia.
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Resources
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Climate Science Documents
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Accounting for groundwater in stream fish thermal habitat responses to climate change
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Forecasting climate change effects on aquatic fauna and their habitat requires an understanding of how water temperature responds to changing air temperature (i.e., thermal sensitivity). Previous efforts to forecast climate effects on brook trout (Salvelinus fontinalis) habitat have generally assumed uniform air–water temperature relationships over large areas that cannot account for groundwater inputs and other processes that operate at finer spatial scales. We developed regression models that accounted for groundwater influences on thermal sensitivity from measured air–water temperature relationships within forested watersheds in eastern North America (Shenandoah National Park, Virginia, USA, 78 sites in nine watersheds). We used these reach-scale models to forecast climate change effects on stream temperature and brook trout thermal habitat, and compared our results to previous forecasts based upon large-scale models. Observed stream temperatures were generally less sensitive to air temperature than previously assumed, and we attribute this to the moderating effect of shallow groundwater inputs. Predicted groundwater temperatures from air–water regression models corresponded well to observed groundwater temperatures elsewhere in the study area. Predictions of brook trout future habitat loss derived from our fine-grained models were far less pessimistic than those from prior models developed at coarser spatial resolutions. However, our models also revealed spatial variation in thermal sensitivity within and among catchments resulting in a patchy distribution of thermally suitable habitat. Habitat fragmentation due to thermal barriers therefore may have an increasingly important role for trout population viability in headwater streams. Our results demonstrate that simple adjustments to air–water temperature regression models can provide a powerful and cost-effective approach
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Resources
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Climate Science Documents
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Literature by Brook Trout Modeling Group
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Literature
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News & Events
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Brook Trout and Stream Temperature Workshop Information
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April 2015 Workshop Materials & Logistical Information
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A New Way to Support EBTJV-Shop Select RepYourWater Merchandise to Further our Brook Trout Conservation Efforts
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Shop Select RepYourWater Merchandise to Further our Brook Trout Conservation Efforts-The Eastern Brook Trout Joint Venture (EBTJV) is excited to announce its collaboration with RepYourWater, Beyond the Pond, and the Atlantic Coastal Fish Habitat Partnership (ACFHP) to further support fish habitat conservation from whitewater to bluewater.
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News & Events
