Midwestern and Eastern lakes such as Lakes Michigan, Huron, Erie, and Ontario demonstrate the consequences of excess inputs of nutrients and toxic contaminants, as well as non-native species introductions and over-fishing (BOX 3).
Midwestern and Eastern lakes such as Lakes Michigan, Huron, Erie, and Ontario demonstrate the consequences of excess inputs of nutrients and toxic contaminants, as well as non-native speciesintroductions and over-fishing (BOX 3).