Download Brook Trout And Climate Change

By Turner Sasina
Brook Trout (Salvelinus fontinalis)
 Stenotherm
 Dark base coloration , scattered small red spots, with
red pectoral, pelvis and anal fins, vermications
Brook Trout Native Range
Habitat
 Prefer clear cold water bodies that are often associated
with mountain streams
Physiological Effects of Warmer
Temperature
 Exotherms, meaning temperature effects many aspects
of a fish’s functions.
 Functions including growth, respiration, reproduction
etc…
Temperature Tolerances
Physiological
Habitat Loss
 Range from roughly 20 to 40% from climate change
alone.
Habitat Loss
Invasive Species
 Stenotherms vs. Eurytherms
 Brown Trout and Rainbow Trout and other piscivorous
fish species
 Invasive species are stocked for sport fishing activities
 Brook Trout are considered invasive
Invasive Species
Current Management
 Some management to reclaim habitat lost from land
changes in the water sheds
 Means include replanting riparian zones, introducing
Brook Trout back to viable habitats that were lost
 Decrease habitat fragmentation
Management for Climate Change
 A more active approach
 Facilitating migration
Management
Future for Brook Trout
 Will more than likely require more active approaches
to preserve the species in the uncertain future of
climate change
 Reduce the stocking of non native species
 More research into methods of management in regard
to climate change and surveys of watersheds.
Sources
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http://www.nativetroutflyfishing.com/brooktrout.htm
Http://www.wildtrout.org/content/trout-facts
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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