Why is the otter sighting in the Adyar River significant?

The otter sighting is significant as smooth-coated otters indicate a healthy, unpolluted river system.

What improvements led to otters returning to the Adyar River?

Recent dredging for flood mitigation and improved river management practices are credited with enhancing the Adyar's ecosystem.

Are smooth-coated otters rare in urban rivers like the Adyar?

Yes, smooth-coated otters are classified as 'vulnerable' and their presence in an urban river like the Adyar is a rare and positive sign.

Home / Environment / Otter Sighting Surprises Chennai Urbanites

Otter Sighting Surprises Chennai Urbanites

10 Jan

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Summary

A smooth-coated otter was spotted in the Adyar River eco-park.
The sighting suggests improved river health due to recent dredging.
Otters are vulnerable species and indicators of clean waterways.

Otter Sighting Surprises Chennai Urbanites

A recent sighting of a smooth-coated otter in the Adyar River's Tholkappia Poonga has marked a significant ecological event in the urban landscape of Chennai. Birdwatcher Indou Theagarajan made the discovery on December 28, noting it as a surprising yet welcome addition to the area's biodiversity, which already boasts around 70 bird species.

Experts like naturalist Yuvan Aves view this otter's appearance as a positive trophic cascade effect, signaling improved river conditions. Dredging efforts for flood mitigation are believed to have revitalized the Adyar estuary, contributing to its rise as a prominent citizen science birding platform hotspot and supporting aquatic life.

Smooth-coated otters, listed as vulnerable on the IUCN Red List, are crucial indicators of river system health. Ecologist Albert Peter notes that their presence suggests that certain stretches of the Adyar River are now free from pollutants and sludge, fostering a healthier environment for various aquatic species.