2008-10-30T17:09:56+00:00 84 Tim 5 Grab your binoculars and pull on your wading boots as American Field Guide introduces you to some of America's most fascinating places. Learn about the importance of healthy Ecosystems and the interdependence of life in these delicate natural communities. Check out the featured video clips for a peek at some of our most intriguing segments on Ecosystems; or dig deeper into the collection by browsing the subtopic categories. 2008-10-30T17:09:56+00:00 10 69