Barbara H. Lidz 2000 Environmental Quality and Preservation-Bedrock Beneath Reefs: the Importance of Geology in Understanding Biological Decline in a Modern Ecosystem' is a four-page and one-plate full-color discussion of the geologic framework and evolutionary history of the coral reef ecosystem that lines the outer shelf off the Florida Keys. application/pdf 10.3133/ofr0046 en U.S. Dept. of the Interior, U.S. Geological Survey, Environmental quality and preservation; bedrock beneath reefs; the importance of geology in understanding biological decline in a modern reef ecosystem reports