New Study Warns Of Extinction Threat For Southern California's Mountain Lions.
Two populations of mountain lions in Southern California face a significant threat of extinction if actions aren’t taken to protect their environment and safeguard animal transit routes through increasingly developed areas, a new study warns.
The mountain lions face increasing dangers from highway accidents, as well as death by rat poison, wildfires and shooting if an animal attack pets or livestock. But the biggest danger over the long term is a dwindling genetic pool as their territories are carved up and movements blocked by roads and development, the study warns. Yet judicious changes, particularly concerning protections of travel routes, could save the animals.
Researchers, including from the University of California at Los Angeles, UC Davis and the National Park Service, analyzed DNA samples and 15 years of data from both areas to create population viability models to predict extinction based on genetic and environmental risk factors. The “greatest long-term threat to both populations appears to be the rapid loss of genetic diversity associated with their isolation from mountain lions in surrounding areas,” the study concludes.
Earlier this month, the Ventura County Board of Supervisors passed a groundbreaking new law protecting “wildlife corridors” and other land use restrictions to safeguard movement of the animals through the region. The wildlife passages are now part of the zoning law in the area next to Los Angeles County.
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