Some warn that this will result in a Malthusian population crash.

Many things, including natural factors, could bring on a population crash by breaking the salmon's classic life-cycle chain.

I was specifically asked to predict the possibilities attendant to a global population crash.

Earth was heading into a major population crash.

This helps them to recover rapidly from a population crash.

Once a common sight in both urban and rural areas of Britain, starlings have suffered a dramatic population crash.

During the early 1970s, the value of fisher pelts soared, leading to another population crash in 1976.

In 2003 there was a final population crash in the species.

We are inevitably heading for a massive plantetary population crash.

The further consequences start with starvation, a population crash, and a descent into cannibalism.