Over time, they reproduce and form vast beds and gummy carpets along the river’s edges. A good mussel population, therefore, is regarded as an indicator of the ecosystem’s health. So when a ...

A first-of-its-kind project seeking to restore river ecosystems along 39 miles of the Lower Mississippi River has federal approval to move forward — if it can secure a slice of the federal bankroll.

River dolphins are crucial indicators of a healthy river ecosystem, and their dwindling numbers have raised concerns about pollution and habitat destruction.