KEYS: #mayfly #sedge #caddis #stonefly #nymph #European #streams
The focus of this research is on small streams.
The lack or scarcity of insects is not necessarily a symptom of human-induced pollution, although there is a clear indication of a direct relationship between
the poorness of macrobenthos diversity
and anthropization. The gradation used is derived from the Trent Biotic Index.
Water (region, country) |
Click here for color explained
Blue: clean stream |