The Bioscan, 2 (2) 109-112,2007
An International Quarterly Journal of Life Sciences
web site: www.thebioscan.in 
MODERN TRENDS FOR ASSESSMENT OF FOREST STREAMS AND RIVERS OF
SOUTHERN WESTERN GHATS USING CADDISFLIES
S.DINAKARAN* AND S.ANBALGAN
Centre for Research in Aquatic Entomology, Department of Zoology, The Madura College(Autonomous), Madurai - 625 011, Tamil Nadu, India E-mail : dinkarji@gmail.com

KEY WORDS

Water quality
Streams/rivers
Caddisflies
Southern Western
Ghats



Received on: 25.10.2006

Accepted on: 11.02.2007


*Corresponding
 Author

ABSTRACT

Larvae of caddisflies have been used as biosensors in the assessment of water quality of any riverine habitats. Caddisflies were collected in twenty-nine streams across three states of Southern Western Ghats between May 2006 and April 2007. Two types of assessments were carried out, one is concerned with general assessment condition and the other flow-related impacts. Results of the present investigation reveals that streams of Tamilnadu are moderately un-impaired when compared to the streams sampled in Kerala and Karnataka. Our aim is to refer the impacts of forest covered streams and rivers with natural and near-natural conditions of the southern Western Ghats. The general trend observed in this study was that lower reaches of the Ghats are greatly impaired than the higher reaches. In particular, Kurusedi stream of Palni hills is un-impaired and have less anthropogenic modifications and maintain natural/near-natural condition.