A Florida Sea Turtle Study

Summary

Florida is an important area for sea turtle research. Nesting-beach surveys provide valuable information about adult females, but reveal less about adult males and juvenile or sub-adult turtles. In 2014, researchers began studying turtles in the Chassahowitzka National Wildlife Refuge to learn how they use local habitat and to track population trends.

The study combines surveys and individual-animal tracking:

• Transect surveys: Researchers travel set lines by boat and record each turtle’s species, age class, distance, and angle from the vessel. These observations help estimate relative abundance.
• Capture and tagging: Green and Kemp’s ridley turtles are captured for satellite tracking. Researchers measure their carapaces, apply identifying flipper tags, and attach satellite tags with epoxy before releasing them at the capture site.
• Satellite data: Tags record GPS locations, dives, and water temperature. Tracking indicates that turtles use the area through fall and leave as the water cools. One green turtle returned to the same area the following year, suggesting that some turtles may return seasonally.
• Tissue sampling: Samples from loggerhead and green turtles are used for genetic analysis, helping identify the nesting-beach populations the turtles came from.

Together, abundance, movement, habitat-use, and genetic data can help NOAA Fisheries assess sea turtle populations and inform conservation and management decisions.

Researchers and Sources Featured

• Chris Sasso — Researcher featured in the video
• NOAA Fisheries — Agency conducting the research and using its findings to inform management decisions