Brook Trout And Climate Change
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Transcript of Brook Trout And Climate Change
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Brook Trout And Climate Change
By Turner Sasina
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Brook Trout (Salvelinus fontinalis)
StenothermDark base coloration , scattered small red
spots, with red pectoral, pelvis and anal fins, vermications
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Brook Trout Native Range
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HabitatPrefer clear cold water bodies that are often
associated with mountain streams
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Physiological Effects of Warmer TemperatureExotherms, meaning temperature effects
many aspects of a fish’s functions.Functions including growth, respiration,
reproduction etc…
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Temperature Tolerances
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Physiological
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Habitat LossRange from roughly 20 to 40% from climate
change alone.
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Habitat Loss
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Invasive SpeciesStenotherms vs. Eurytherms Brown Trout and Rainbow Trout and other
piscivorous fish speciesInvasive species are stocked for sport fishing
activitiesBrook Trout are considered invasive
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Invasive Species
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Current Management Some management to reclaim habitat lost
from land changes in the water shedsMeans include replanting riparian zones,
introducing Brook Trout back to viable habitats that were lost
Decrease habitat fragmentation
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Management for Climate ChangeA more active approachFacilitating migration
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Management
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Future for Brook TroutWill more than likely require more active
approaches to preserve the species in the uncertain future of climate change
Reduce the stocking of non native speciesMore research into methods of management
in regard to climate change and surveys of watersheds.
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Sources http://www.nativetroutflyfishing.com/brooktrout.htm Http://www.wildtrout.org/content/trout-facts EBTJV Roadmap to Restoration — EBTJV. Available from:
http://easternbrooktrout.org/reports/ebtjv-roadmap-to-restoration/view Ficke AD, Myrick CA, Hansen LJ. 2007. Potential impacts of global climate change on freshwater
fisheries. Reviews in Fish Biology and Fisheries 17:581–613. Rahel FJ, Bierwagen B, Taniguchi Y. 2008. Managing aquatic species of conservation concern in
the face of climate change and invasive species. Conservation Biology 22:551–561. O’Neal K. 2002. Effects of global warming on trout and salmon in US streams. Defenders of
Wildlife. Poplar-Jeffers IO, Petty JT, Anderson JT, Kite SJ, Strager MP, Fortney RH. 2009. Culvert
replacement and stream habitat restoration: implications from brook trout management in an Appalachian watershed, USA. Restoration Ecology 17:404–413.
Anon. Brook Trout - Shenandoah National Park (U.S. National Park Service). Available from: http://www.nps.gov/shen/naturescience/brook-trout.htm
Wenger SJ, Isaak DJ, Luce CH, Neville HM, Fausch KD, Dunham JB, Dauwalter DC, Young MK, Elsner MM, Rieman BE. 2011. Flow regime, temperature, and biotic interactions drive differential declines of trout species under climate change. Proceedings of the National Academy of Sciences 108:14175–14180.
http://www.dec.ny.gov/outdoor/7739.html https://www.fhwa.dot.gov/engineering/hydraulics/pubs/07033/1.cfm