Gopher Tortoise Burrow Use, Home Range, Seasonality, and Habitat Fidelity in Scrub and Mesic Flatwoods of Southern Florida

Abstract

Abstract In southern Florida, USA, Gopher Tortoises (Gopherus polyphemus) primarily occupy habitats that are considered suboptimal or unsuitable in other parts of the range. The dominant habitat is mesic flatwoods, which has abundant forage but has high water tables that might hinder burrowing and nesting. In contrast, Florida scrub assemblages on inland ridges have suitable soils but scarce forage. We used radio telemetry to monitor 22 male and 23 female Gopher Tortoises in mesic flatwoods and scrub habitats of southern Florida. Compared to mesic flatwoods, we predicted larger home ranges and more frequent movement among burrows in scrub because of the scarcity of forage, and we predicted possible shifts in home ranges (e.g., from wetter to drier habitats) in response to seasonal rainfall. We found that home ranges in our study area were larger than is typical for higher-quality habitats (e.g., sandhill) in other parts of the range, but we observed little movement between habitats. Male home ranges and b...