The aquarium also features exhibits detailing the local Korean river ecosystems.

Are we to ignore the fact that the floodwater is an integral part of three river ecosystems?

This project aims at restoring the river ecosystems for sustainable development.

The system focuses around a main character Betty, who has asked the students to teach her about river ecosystems.

In the Desert Southwest, dams can change the nature of the river ecosystem.

The whole river ecosystem is going down the tubes in the name of rampant economic development.

There will also be a discussion of the river ecosystem with a chance to view bald eagles.

The river was once one of the richest river ecosystems in California.

The river ecosystem is important for many species of animals.

The flood pulse concept is one of three primary models describing large river ecosystems.