As you may know, we’ve been monitoring local wildlife to learn about where they are moving well across the landscape, and where they aren’t. Remember our beloved coyote and badger video? We captured the candid footage of this playful pair as part of our study — in partnership with Pathways for Wildlife — to better understand how animals make their way between local mountain ranges. These unlikely companions sparked our imaginations and warmed our hearts. We know that their presence here is key to our regional biodiversity.
The Santa Cruz Mountains, Gabilan Range and Diablo Range each provide critical habitat for local plants and animals. When wildlife can move freely between the ranges, they thrive. However, traveling throughout our populous region is no easy feat.
All across California, roads, vehicles and human development make safe passage between habitats a life-threatening challenge for animals looking for new territory, food and mates. If they become isolated, we face the possibility that some species might become locally extinct. This would have a profound impact, not only for individual creatures, but entire ecosystems. So, connecting and restoring fragmented habitats is a top priority.
For three years, POST has worked with Pathways for Wildlife — a research organization specializing in animal tracking and movement — to assess connectivity between the mountain ranges in Santa Clara, San Benito, Santa Cruz and Monterey Counties.
Our research focused on the major roads of this region. We paid special attention to the Aromas Hills and Upper Pajaro Valley, where the four counties and three mountain ranges converge. The goals: to understand where wildlife can currently travel safely via culverts (undercrossings beneath roads) and bridge underpasses, and to identify hotspots where animal and vehicle collisions happen most frequently. Our findings are already informing work by us and our partners to improve transportation infrastructure, buy land in key locations, restore habitat and more. Here are just a few things we discovered.
Data collected by Pathways for Wildlife for POST for this study. Clockwise: deer, bobcat, raccoon, heron, coyote, squirrel.
The study found that 19 locations offer the most promising opportunities to reduce wildlife-vehicle collisions and improve wildlife movement throughout the region.
These opportunities include protecting and restoring habitat, maintaining or improving existing culverts and bridge underpasses, and constructing new crossing structures in key locations where possible. These ambitious recommendations will take years — and decades — to put in place, and we can’t do it alone. We’ll work with local partners to implement the study recommendations.
For more than 45 years, POST has focused our efforts on the Peninsula and the South Bay. Our keen understanding is that our projects will have impacts beyond our working area. This study confirmed our hunch that it’s important for us to expand our wildlife connectivity work even further south where the mountain ranges come together to connect northern California to the Central Coast, and east to the interior mountain ranges. Unless we take action, the Santa Cruz Mountains are at risk of becoming isolated — their stunning biodiversity is an asset we can’t afford to put on the line. We’re excited to explore the opportunities presented in the study and to build a more interconnected region so close to home.
Peninsula Open Space Trust (POST) protects open space on the Peninsula and in the South Bay for the benefit of all. Since its founding in 1977, POST has been responsible for saving more than 87,000 acres as permanently protected land in San Mateo, Santa Clara and Santa Cruz counties. Learn more