Estudio de la incidencia de una piscifactoria en las comunidades de macroinvertebrados acuáticos

Abstract

The effect of a troutfarm on the rnacroinvertebrate populations of a strearn was studied and sorne biotic indices were used. It was concluded that the effect altought slight was clearly detected by the macroinvertebrates, increasing or decreasing their populations. Likewise a habitat transposition was observed. On the other hand both E.B.I. (Woodiwiss, 1978) and Hellawell's (1978) index were most suitable for testing the fishfarm effect on the stream dueto the good water quality interpretation ofthe first one and easy use and sensivity on the second.