Simulated effects of reduced spring flow from the Edwards Aquifer on population size of the fountain darter (Etheostoma fonticola)
The Edwards Aquifer in south-central Texas, U.S.A. is recognized worldwide for its aquatic species of flora and fauna, many of which are endangered or threatened, and also is the sole water source supporting the industrial, agricultural, municipal, and recreational needs of nearly 2 million people. Because it is generally the first species affected by low spring flows, the endangered fountain darter (Etheostoma fonticola) has been a focal point for controversies involving the endangered species act, state of Texas groundwater law, and private property rights.