However, as shown above, these costs may come along with some negative environmental effects on native ecosystems.

Climate change is starting to have major impacts on ecosystems.

Current research focuses on managing ecosystems in a rapidly changing world.

She is a world expert on fresh water issues and related ecosystems.

Students will identify the potential implications of this scientific data on natural ecosystems and human society.

Derec still had his files on ecosystems, and now the central computer did, too.

The problem is the overall pressure on ecosystems and the natural resource base.

The net effect could be negative, some scientists say, especially on natural ecosystems.

What studies have there been into nano-technology and the effects of these products on ecosystems?

Agriculture has always been a strong human impact on ecosystems.