Assessment and management of effects of large hydropower projects on aquatic ecosystems in British Columbia, Canada

摘要: Most of the hydropower generated in Canada’s western province British Columbia is by a small number large storage or diversion projects that impound rivers. All but one were built between 1950 and 1985; period when environmental considerations for evolving to present-day social, political regulatory standards. Large result ecosystem transformations; river valleys are converted reservoirs, release water power generation results highly altered flow regimes downstream dams. I describe effects three on aquatic ecosystems measures have been taken over past 60 years monitor mitigate those effects, with an emphasis fish populations. briefly review methods used predict particularly key species, consider role adaptive management its alternatives resolving uncertainties about ecological hydroelectric projects.