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Hydrogeology of brook trout (Salvelinus fontinalis) spawning and incubation habitats: implications for forestry and land use development
- Curry, R.A., Devito, K.J.
- Canadian journal of forest research = 1996 v.26 no.5 pp. 767-772
- Salvelinus fontinalis, habitats, spawning, incubation, watershed hydrology, land use, resource management, Ontario
- We demonstrated that nearshore spawning and incubation habitats of brook trout (Salvelinus fontinalis) are manifestations of lenses of coarse overburden materials underlying the nearshore zone. Lenses directed and accelerated groundwater flow into the habitats. They were < 17 m wide, > 1 m thick, and could be restricted to the nearshore zone or extend at least 20 m into the terrestrial catchment. Recharge areas necessary to sustain discharge in the habitats were estimated to encompass 3-10 ha, or 1-97%, of the associated terrestrial catchment. A 90-m buffer zone adjacent to the shoreline protected only 9-55% of the required recharge area. A hydrological approach to defining habitat protection measures is suggested.