From UPSC perspective, the following things are important :
Prelims level : Gangetic Dolphin
Mains level : Conservation of Gangetic Dolphin
- The annual Ganges river dolphin census site has begun.
Annual Ganges River Dolphin Census
- It is undertaken by World Wide Fund for Nature-India in collaboration with the Uttar Pradesh Forest Department.
- It is being held along the 250-km-long riverine stretch of Upper Ganga between Hastinapur Wildlife Sanctuary and Narora Ramsar.
- Unlike previous years, when direct counting method was used, this year the tandem boat survey method is being used.
What is Tandem Boat Survey Method?
- Here the officials use two inflated boats which move in tandem to count the dolphins.
- After collating the data, statistical tools are employed to arrive at the final count.
- The method is developed by the renowned river and marine ecologist Gill Braulik, provides a more accurate count of the endangered species.
- This new method is likely to yield more accurate count of the endangered species
- Gangetic river dolphins fall under Schedule I of the Indian Wildlife (Protection) Act.
- It has been declared an endangered species by the International Union for Conservation of Nature (IUCN).
- The Gangetic river species found in India, Bangladesh and Nepal is almost completely blind.
- It finds its way and prey using echoes with a peculiar ‘su-su’ sound being everything for them to navigate, feed, escape danger, find mates, breed, nurse babies and play.
- Like bats, they produce high-frequency sounds which help them ‘see’ objects when the sound waves bounce off them.