Evaluating and Reintroducing Local Turtle Populations
Toledo Zoo’s Conservation Department conducts vital research in local woodlands and marshes using mark-recapture techniques to monitor turtle populations. Species studied include Spotted turtles, Blanding’s turtles, Woodland box turtles, Painted turtles and Common snapping turtles. By collecting data on size, weight and the number of individuals at each site, conservation biologists can estimate overall population health and size.
In addition, our team uses radio telemetry to better understand turtle movements and habitat use. Turtles are safely fitted with a small radio transmitter—harmlessly attached with removable epoxy—and tracked weekly after release. These studies help inform conservation strategies and guide recommendations for our partners.
Most recently, staff began releasing captive-reared Blanding’s turtles into Northwest Ohio wetlands where wild populations are in steep decline. Over the past four years, 311 turtles have been released, with more planned each season.
Community Efforts
Community science empowers individuals to actively participate in data collection, share unique perspectives and engage with neighbors—fostering a meaningful connection to environmental research.
Toledo Zoo’s long-term Blanding’s Turtle Community Science Program, launched in 2014, features a community scientist lead who coordinates the collection of turtle plastron photos in their neighborhood. These plastron patterns, similar to fingerprints, are analyzed using pattern-recognition software. Over time, these unique markings help researchers track population histories and guide future conservation planning.
Anyone can be a community scientist! Upload photos of reptiles or amphibians you encounter during your outdoor adventures.
Have you seen a Blanding’s, Spotted, or Box turtle? If so, please send picture and location to: turtles@toledozoo.org
