2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/21/2018 | 9:15 AM - 9:30 AM | APPLICATION OF BIOTIC METRICS IN AQUATIC ECOSYSTEM: IMPLICATIONS TO RIVER HEALTH ASSESSMENT FOR SUSTAINABLE WATER RESOURCE MANAGEMENT IN WESTERN NEPAL | 410 A
APPLICATION OF BIOTIC METRICS IN AQUATIC ECOSYSTEM: IMPLICATIONS TO RIVER HEALTH ASSESSMENT FOR SUSTAINABLE WATER RESOURCE MANAGEMENT IN WESTERN NEPAL
Sustainable water resource management has become a key challenge in this 21st century. Ever-going demands of water supplies for domestic consumption, irrigation and energy have stressed river ecosystems immensely than ever before worldwide. In Neal, amongst others, mountain headwaters are highly threatened due to constructions of multiple irrigation channels along their water courses. Many of the springs and streams have been dried before they get confluence to main river channel. The consequences might be enormous for mobility of aquatic organisms and overall biodiversity. However, study on impacts of irrigational water abstraction in river ecosystems and biodiversity are largely lacking. This study aims to (i) assess the impact of altered flow regimes on benthic macroinvertebrates communities downstream of water diversion and (ii) identify sensitive biotic metrics for assessing the impact of altered flow regimes. Over 1100 benthic macroinvertebrates samples were collected from middle mountain rivers in Mahakali and Karnali river basins of western Nepal during post-monsoon, baseflow and pre-monsoon seasons in the years 2016 and 2017. Multiple water diversion projects in a single river have worsened river health, which is very well reflected in the altered benthic macroinvertebrates’ abundance and composition.
- Bioassessment
- Bioindicators
- Dams
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Presenters/Authors
Ram Devi Tachamo Shah
(), Kathmandu University, ramdevi.env@gmail.com;
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