Emergenzmessung als neue Methode zur produktionsbiologischen Untersuchung von Fließgewässern. Schlitzer produktionsbiologische Studien (2)

Abstract Quantitative records of the number and biomass of water-insect adults from a given area of running water courses were obtained by setting greenhouses over small streams. Comparing the results of emergence in two brooks one observes an outstanding equality of biomass, i.e. 4.39 resp. 4.53 gram organic matter/year/m