92-7 Sat Jan 2 Longitudinal study of sea turtle nesting behavior on a large Gulf of Mexico rookery Lasala, JA*; Bernhard, MC; Mazzarella, KT; Mote Marine Laboratory, Sarasota, FL; Mote Marine Laboratory, Sarasota, FL; Mote Marine Laboratory, Sarasota, FL jlasala@mote.org https://mote.org/research/program/sea-turtle-conservation-research
Longitudinal data sets are essential to the study of imperiled organisms. This is especially true for species that have long life history stages that are largely difficult to study due to their location, such as marine turtles. Examining trends over time can reveal changes that might not be evident from a standard census. These data are critical for conservation managers to properly assess recovery. For marine turtles, one of the best ways to estimate population size is to examine nesting numbers and extrapolate how many individuals are actively nesting within a community. Further productivity metrics examine nest success (successful nests / not-successful attempts), nest hatch success (number of eggs hatched) and emergence success (number of hatchlings leaving the nest). These values frequently fluctuate from year to year due to nest placement, predation, and storm activity. The Sea Turtle Conservation and Research Program of Mote Marine Laboratory has been monitoring nesting turtles on 35 miles of coastline on five islands off the Florida Gulf coast since 1982. They have documented close to 120,000 turtle crawls and almost three million hatchlings leaving the beach. In this talk, we will compare nesting success and nest productivity across the five islands over this thirty-nine-year dataset and discuss how nesting trends in this region are actively contributing to this imperiled population.