| http://www.w3.org/ns/prov#value | - Habitat degradation, including loss of aquatic vegetation and sedimentation of streambeds.Spawning failures due to cold water releases from dams.Predation by, and competition with, introduced fish such as redfin perch and gambusia.Construction of weirs, dams and other barriers to fish passage, which have fragmented populations and prevented re-colonisation of areas.
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