A special lecture on "Earth's Health is in Our Hands" at Kaliammal College of Education, Karur-Dt. (05.03.2018).

“Keystone Species” are keep the ecosystem in balance. If suppose loss one such species in the eco-system, entirely collapse the total eco-system and further extended to the near eco-system. Keystone species maintain long-term sustainability. Take for example humming birds. It is vital in the pollination processes.  Another good example is Grey wolf. Hence, the present movement is preservation and restoration of keystone species is very essential. Recently, Uma Ramakrishnan, National Centre for Biological Science, Bangalore has pointed out, Pikas are keystone species. Pikas mostly habitat in Himalayan ecosystem. And Black Clam is another keystone species. Black Clam is highly available in Vembanad Lake. Such species indirectly help to the fisheries field. Now, black clam is declined by human activities in the form commercial business. In terrestrial ecosystem, number of animals act as keystone species. Such as butterfly, earthworm, bees, birds and ants etc. Sometime, buffaloes dung are useful to disseminate the rare seeds. Hence, we aware about the Keystone Species for future generation.