Recent studies on the Edwards Aquifer, a karstic formed cavernous system in Texas, indicate an extremely diverse community of aquatic troglobites. Sampling of wells and springs is providing new insight into the dynamics of this fascinating system, which is possibly the most diverse subterranean aquatic ecosystem known in the world today.
The Edwards Aquifer: Earth's most diverse groundwater ecosystem?.
International Journal of Speleology,
Available at: http://scholarcommons.usf.edu/ijs/vol11/iss1/12