Observations on the faunas of two warm streams in the taupo thermal region

Observations were made on the biota of two warm streams in the Taupo thermal region during December 1965 and June 1966. Distribution of the fauna was related to the observed water temperatures, and the possible effects and importance of high temperature are discussed. The principal “thermal” species were Protozoa, larval and adult Hydrophilidae (Coleoptera), larval and pupal Ephydridae (Diptera), Nematoda, and Rotifera.