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Elevated summer temperatures delay spawning reduce redd construction for resident brook trout (Salvelinus fontinalis)
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Redd (nest) surveys for resident brook trout (Salvelinus fontinalis) were conducted annually in a mountain lake in northern New York for 11 years with multiple surveys conducted during the spawning season in eight of those years. Elevated temperatures in summer were correlated with a delay in spawning and a reduction in the total number of redds constructed. Increasing the summer mean of maximum daily air temperatures by 1 °C delayed spawning by approximately 1 week and
decreased the total number of redds constructed by nearly 65.
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Brook Trout Related Publications
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New review of genetic rescue
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Is now the time? Shannon White, Jacob Rash, and David Kazyak review the application of genetic rescue to brook trout conservation.
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Reflections on Brook Trout Conservation over the past 6 years
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Nat Gillespie talks about the state of brook trout conservation. Nat is the Assistant National Fish Program Leader for the US Forest Service in their Washington, DC headquarters. He served as the EBTJV Steering Committee Chair from 2017-2022.
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Seasonal streamflow extremes are key drivers of Brook Trout young-of-the-year abundance
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Based on counts of Brook Trout (Salvelinus fontinalis) collected over 28 yr at 115 sites in Shenandoah National Park, we developed mixed-effects models to (1) assess how well extreme streamflow, as compared to mean flows and total precipitation, can explain young-of-the-year (YOY) abundance, (2) identify potential nonlinear relationships between seasonal environmental covariates and abundance using nonlinear generalized additive mixed models, and (3) explore likely impacts of expected future weather and streamflow conditions.
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Brook Trout Related Publications
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See our videos from the recent EBTJV annual meeting!
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in April 2022 EBTJV had a membership meeting at NCTC. Videos are now on YouTube.
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Sharing from NPS: Researchers see startling brook trout declines in Shenandoah streams
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Land use and pollution used to be brook trout’s biggest problems. But our latest research shows that being a cold-water fish in a warming world might be its greatest challenge yet. By Jeb Wofford and Evan Childress
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Small Grant Program now open
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2023 Small grant program for outreach and education.
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