Chironomidae (Diptera) community response to improved oxygen conditions in a naturally recovering lake ( kuk Wielki, northeast Poland)

A Study of the chironomid community was undertaken in Lake kuk Wielki during the 1997-1999 period. Twenty six taxon belonging to the subfamilies Tanypodinae and Chironomini were identified. Taxonomic diversity decreased with increasing depth in the lake, but the occurrence of Chironomidae larvae was noted even in the deepest part of the lake. Chironomidae clearly indicated that Lake kuk Wielki is recovering.