Controlling the bison population, however, remains important for Catalina's overall ecological health.

The diversion were having a significant impact on the ecological health of the Murray-Darling river system.

This sacred natural site preserves the natural resources and ecological health of the range.

Human health, ecological health, and environmental health are closely connected.

Much depends on how serious the powerful paper industry is about ecological health.

This is also a positive sign for the country's ecological health generally.

During recent years he has only accepted projects where very strict ecological, health and environmental criteria are always respected.

And the ecological health of the marsh has seriously deteriorated, the experts say.

It described the Waitetuna at its mouth as having moderate ecological health.

Being conspicuous elements of the ecosystem, they have been considered as indicators of ecological health.