Conclusion

Physico-chemical and biological characterization carried out in lakes located all over the city shows that large number of lakes in Bangalore are polluted mainly due to sewage from domestic and industrial sectors. Detailed quantitative investigation involving physical, chemical parameters and statistical analysis of selected parameters indicate that the Yediur lake has higher degree of pollution compared to Sankey tank. The socio-economic surveys carried out in region surrounding Hebbal lake showed high level of dependency for ground water, fodder, fish etc. Higher level of dependency on wetlands and its poor quality calls for an immediate restoration of degraded lakes and appropriate measures for conservation and management in order to maintain ecological balance in the region. Various policy measures including the creation of regional conservation form represented by network of education institution, researchers, NGO's are suggested in this regard to restore already degraded lakes, conservation and management.

Acknowledgements:

This research was supported by the Ministry of Environment and Forests , Government of India and The Ministry of Science and Technology, Government of India.