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approved: Redacted for Privacy /Dr. Douglas F. Markle Microhabitat use by adult speckled dace (Rhinichthys osculus), adult longnose dace (R. cataractae), and juvenile dace (R. spp.) was investigated during the summer of 1992 in an Oregon Cascades stream. Selected areas were snorkeled day and night in order to evaluate differential use of habitat resources both temporally and spatially. Speckled dace were active both day and night but longnose dace were only observed at night when they weredoi:10.2307/2426359 fatcat:zaotaxd54nbtbdajnvafzqrism