USING MACROINVERTEBRATES AS THE BIO-INDICATORS TO MONITOR THE WATER QUALITY OF HAN RIVER, DANANG CITY, VIETNAM

Abstract

Using macro invertebrates as the bio-indicators to monitor the river water quality has been applied in several countries in the world and in some provinces in Vietnam. This method has many advantages such as simplicity, quantitative collection, easy maintenance, cheapness, especially convenience for monitoring. The result of monitoring the water quality of Han River  based on macro invertebrates from November 2010 to March 2011 at 6 locations on the Han River in Da Nang city (from Red Bridge to Tuyen Son Bridge) shows that the river water quality is at the average pollution level of α  (α-mesosaprobe). This result is consistent with the results of monitoring the water quality through the physical and chemical indicators by Ministry of Natural Resources and Environment. It can be confirmed that using large macro-invertebrates as the bio-indicators to monitor the water quality is suitable for the conditions in Da Nang city, contributing to supporting programs of monitoring the integrated environment as well as  the environmental quality systematically and sustainably.