Everything in the environment are inter- connected. The loss of one species will affect the other species.
Tiger is a top predator which is at the apex of the food chain and keeps the population of wild ungulates in check, thereby maintaining the balance between prey herbivores and the vegetation upon which they feed.
Therefore, the presence of tigers in the forest is an indicator of the well being of the ecosystem. If tiger is not there, it’s prey- Chital, Sambar etc., will grow in numbers and will eat more grass and leaves, which will affect the forest. Tigers help in maintaining the ecological balance.
Thus, conserving tiger habitat is crucial for conserving tiger and through these protection measures, the forests are being conserved, which in turn help in regulating rainwater run-off, preventing soil erosion, recharging ground water and minimising local climatic fluctuations.
Saving the tiger is Saving the whole ecosystem!