Introduction / Jason F. Shogren -- The Evolution of the Endangered Species Act / Stanley H. Anderson -- Judicial application of the Endangered Species Act and the implications for takings of protected species and private property / Murray D. Feldman and Michael J. Brennan -- Biological effectiveness and economic impacts of the Endangered Species Act / Jason F. Shogren and Patricia H. Hayward -- The intent and implementation of the Endangered Species Act : a matter of scale / Jeffrey A. Lockwood -- The private lands challenge : integrating biodiversity conservation and private property / John F. Turner and Jason C. Rylander -- Principles to measure the Endangered Species Act Reauthorization Debate / Policy Board of the Institute for Environment and Natural Resources.