James H. Selgeby William E. Jones 1974 The benthos in Lake Oahe, as determined from about 450 bottom samples collected during the open water season in 1968 and 1969, was dominated by oligochaetes and chironomids; Caenis (Ephemeroptera) and Chaoborus (Diptera) were occasionally abundant. Total benthos was estimated at 3,600 organisms/mA? with an ash-free dry weight of about 2.2 g/mA? (about 33 kg/hectare dry weight). Estimated biomass was 1.3 g/mA? (about 18.5 kg/hectare dry weight) and depths of 0.5-10 m and 3.5 g/mA? (about 52.5 kg/hectare dry weight) at greater depths. application/pdf en U.S. Fish and Wildlife Service Invertebrate macrobenthos of Lake Oahe, 1968-69 reports