Macrophytes plays important role in balancing Lake Ecosystem. They have capacity to improve
the water quality by absorbing nutrients, with their effective root system. At the same time death & decay of the
macrophytes increases nutrient concentration, this leads to eutrophication. A rational setup between these two
simultaneous activities is required to maintain the water quality of an aquatic ecosystem. The objective of the study is
to evaluate the usefulness of different macrophytic species (Bio-filters) in reducing the nutrient content of the water
i.e. to reduce the pollution level of water. The paper is the outcome of ex–situ experiments conducted on samples
collected from Shahpura Lake, Bhopal. Two macrophyteic Species
Eicchornia crassipes
&
Hydrilla verticillata
were
selected for ex-situ study. Both the plant species indicates that macrophytes are capable in improving water quality by
reducing nutrient concentration.
