1. PRELIMINARY DATA ON ALGAL, MACROINVERTEBRATE AND FISH COMMUNITIES FROM THE ARIEŞ CATCHMENT AREA, TRANSYLVANIA, ROMANIA. Authors: A. AVRAM, I. STOICA, D. URECHE, M. CÎMPEAN, KARINA PAULA BATTES, F. PRICOPE, KLAUS W. BATTES, L. MOMEU.