The researchers consider the public trust doctrine to be a duty that compels states to ensure a sustainable population of wolves or, indeed, any species.

Captive breeding, laboratory stress tests, and restoration back to native conditions are just a few ways that humans have helped to manage sustainable populations.

It is no longer permitted that visitors feed wildlife and as a result the populations have dropped to a sustainable and natural population.

The goal is to obtain an optimum sustainable population within the carrying capacity of the habitat.

But sustainability in such arid circumstances depends on sustainable populations which do not exceed the resources.

He was a keen supporter of Australia having an ecologically, socially sustainable population.

Much larger areas are required to maintain a sustainable population.

We do not know if this is a sustainable population that can survive on its own without being fed by people.

This can have implications for conservation, where genetic equilibrium can be used as a marker of a healthy and sustainable population.

The town had reached such sustainable population that a municipal water supply was incorporated.