OUT LIMITS: THE SPATIAL USE PATTERNS OF A TRANSLOCATED AQUATIC REPTILE

Laura Van Vranken; University of California Merced; lvanvranken@ucmerced.edu; Jessica Blois, Ninette Daniele, Rob Grasso

With effects from anthropogenic forces compounding to influence species presence and distributions, conservation efforts are pushing to preserve vulnerable species through proactive efforts. This study was part of a larger conservation effort to restore the western pond turtle, Emys marmorata to Yosemite Valley (Yosemite National Park), which was previously part of their historical range. We leveraged the efforts of this pilot translocation study of E. marmorata to determine habitat use and selection of this species in a previously undescribed portion of their range. We calculated average home range sizes and described hibernation use and patterns in a novel environment. Using Manly selection ratios, we identified habitat features of aquatic and terrestrial importance for pond turtles. While filling a knowledge gap in spatial use patterns at the range edge of this threatened species, this study also provides a conservation framework as the first translocation for western pond turtles, and can ultimately inform future conservation and restoration efforts.

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