Since zebra mussels became established in Lake Erie, water clarity has increased from 6 inches to 30 feet in some areas. … One drastic impact of the zebra

Since zebra mussels became established in Lake Erie, water clarity has increased from 6 inches to 30 feet in some areas. … One drastic impact of the zebra mussel invasion is the near extinction of native American unionid clams in Lake St. Clair and in the western basin of Lake Erie. http://www.glsc.usgs.gov/_files/factsheets/2000-6%20Zebra%20Mussels.pdf http://www.glsc.usgs.gov/_files/factsheets/2000-6%20Zebra%20...