Impact of oil and gas development on the blunt-nosed leopard lizards

"The impact of oil and gas development on blunt-nosed leopard lizards (Gambelia silus) was studied in the southerm San Joaquin Valley, California, during May-July 1979. Ecological features on 14 study sites were described. Relative densities of lizards on all 14 sites were estimated and absolute densities on 5 intensive study sites were determined. Increased oil and gas development decreased the number of lizards present on a site"--from Abstract.