There are many different food chains in my ecosystem because it is so vast and there is so many different animals. A food chain is energy flow through all ecosystems. An example of a food chain is the sun goes to grass. The deer goes and eats the grass, and a Royal Bengal Tiger will eat the deer. Therefore, overpopulation of animals like deer, rabbits, and buffalo's. This would cause many problems, like the need for food, it would also drive the ecosystem crashing down.
There are probably many different species in the Sunderbans that we have not yet found. This is just one question but there are many more questions for many different ecosystems. In conclusion, if the Royal Bengal Tiger would be removed from the Sunderbans there would be overpopulation and too much competition for food leading to the ecosystem get overrun by animals like deer, rabbits, and wild boar.