Hence, we did not use release calling to determine sex. Amphibians collected for contaminant analyses should be placed in the cooler with ice packs and then transfered to a freezer upon your return to the laboratory. At the end of the night driving survey, record air temperature, wind speed, sky code, and time. In 1998, we found interesting distribution patterns of amphibians along the night driving road sections. Below are shown the locations of red-spotted toads, Texas toads, Rio Grande leopard frogs, and couch's spadefoots documented between Panther Junction and Rio Grande Village over the course of five night drive surveys.
Larger dots represent greater numbers of individuals recorded at that location.
We will be analyzing the distributions of amphibians along the road stretches in relation to various factors such as elevation, soil types, and distance to drainages.