keystone species and ecological engineers

 Tigers are keystone species and ecological engineers, without them ecosystem may experience a dramatic shift , even though they are a small part of the ecosystem by measures of biomass . As a result, keystone species are important for maintaining the health and stability of the environment they are living in. Since all organisms impact the environment they live in one way or another, it has been proposed that the term “ecosystem engineers” be used only for keystone species whose behavior very strongly affects other organisms. As an experiential yogi and spiritual  being I know that they impact many ways, just take one aspect regulating the environment , which modulate changes in climate and regulate floods, disease, waste, and water quality; for the very people you are trying to help

So ultimately the ecological degradation will lead to declines in the human well-being ..