Assessment of Wildlife Crossing Sites for the Interstate 15 and Highway 101 Freeways in Southern California

2018
Riley, Seth P. D.; Smith, Trish; Vickers, T. Winston
PublisherThe Nature Conservancy
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Total Pages34 pages
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Publication DateMarch 2018
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AbstractFreeways are barriers to wildlife passage and gene exchange. In Southern California, mountain lion movement has been severely restricted due to this infrastructure. As a result, the mountain lions in the Santa Ana and Santa Monica Mountains have become severely inbred, threatening their long-term health and viability. Additional wildlife crossings are needed to improve connectivity across the region. This assessment uses landscape characteristics and wildlife data to evaluate and prioritize possible locations and concepts for wildlife crossings along two major freeways that bisect regional wildlife movement, Interstate 15 at the Riversided-San Diego County border and U.S. 101 in northern Los Angeles County. By combining expert opinion and connectivity science, the authors aim to bridge the gap between science and conservation practice.
Created: 1/4/2019 4:35 PM (ET)
Modified: 1/4/2019 4:35 PM (ET)
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