IMPLICATIONS FOR PREDICTING HIGHER MORTALITY RATES OF AMPHIBIAN ROAD KILLS, TARICHA TOROSA AND OTHER SPECIES

Robert A Shields; Live Oak Associates; rshields@loainc.com;

Adult migrating newts and metamorphs are at risk of becoming road-kill when they are moving to and from their aquatic breeding waters. Roads that bisect a migration route can accumulate high numbers of mortalities throughout the season. We setup a walking survey of 1.8 kilometers of road in southern Santa Clara County. Over the course of the winter and early spring of 2009 & 2010, we conducted 14 surveys and collected data on 626 Taricha torosa mortalities. The carcasses of other amphibians and reptiles disappeared from the survey area quite quickly, while the carcasses of the newts remained on the road for longer periods of time. With the longevity of the newt carcasses and the locating of new mortalities, hotspots of mortality should be able to be determined and compared to topographical draw features and aid in the placement of suitable amphibian crossing structures.

Poster Session