Falling water tables caused by over irrigation posed a long-term ecological threat.

It is currently in danger due to illegal crops and other ecological threats.

Their research addresses ecological threats associated with global climate change, natural resource extraction and habitat fragmentation.

Furthermore, the disused mines present a serious ecological threat to water supplies in the region.

It can pose an ecological threat due to its invasive nature, with potential to crowd out native species.

The ecological threat has caused a public outcry.

They devoted a third of their communique to the urgency of ecological threats, but set no program.

The next part of the job was to film mink where they are most likely to be an ecological threat - the Outer Hebrides.

The global ecological threat to our lives is greater than the need for tobacco.

The ecological threat goes well beyond the overfishing of the sea cucumbers.