Mr. Hitt said excessive wood gathering had upset a delicate ecology.

The newly introduced livestock had a negative effect on the area's delicate ecology.

When crowds form around his work, he uses the opportunity to remind his audience of the delicate ecology of the oceans and seashores.

Vital bays and wetlands could be devastated, their delicate marine ecology disrupted.

It is a delicate ecology that works as a village-type community.

But drilling is certain to disrupt the delicate ecology of the Arctic tundra.

Over time, every pit develops a delicate ecology of relationships that new technology is bound to upset.

But a museum is a delicate ecology.

Florida protested that lower river levels might upset the delicate ecology of Apalachicola bay, and sink the area's oyster industry.

Those are new ecologies, still delicate and poorly understood.