Imperiled Species

The Gulf sturgeon, Acipenser oxyrinchus desotoi, has been listed as Threatened since 1991. Beginning in 1986, USGS has been investigating sturgeon population abundance and ecology throughout its range, but mostly in the Suwannee River.

The USGS is participating in the Louisiana-Trustee Implementation Group Monitoring and Adaptive Management work group to assess the injuries caused by the Deepwater Horizon oil spill and to select the appropriate restoration measures to compensate the public for the injury to coastal and marine resources.

WARC researchers are gathering amphibian data to better understand the impact of natural disasters on treefrog populations and examine post-event processes.

Researchers are developing acceleration data logger pop-off packages that can be affixed to sea turtles to collect behavioral patterns of diving, surfacing, and general activity levels.

Turbid water conditions make the delineation and characterization of benthic habitats difficult by traditional in situ and remote sensing methods. Consequently, only a small fraction of this valuable resource has been mapped or characterized.

Using ecological and geographical data, WARC researchers and their partners are analyzing avian and benthic sampling on Whiskey Island and Caminda Headland to compare pre- and post-restoration aspects of habitat occupancy, habitat availability, habitat use, and kernal density estimation.

To assess use of dredge material areas, avian ecologists from USGS WARC are conducting bird surveys across the annual life cycle.

WARC will assess Cape Sable seaside sparrow population response and viability under different management and habitat change scenarios. The USGS EverSparrow model will be run on future scenarios, and differences in the predicted probability of presence and the efficacy of varying conservation strategies will be evaluated.

Mole skinks that occur on Florida’s islands rely on sand beaches, beach berms, and dunes, making them particularly vulnerable to sea level rise and storm surge. USGS researchers predicted the impacts of sea level rise and storm surge on habitat for the Florida Keys mole skink ( Plestiodon egregius egregius), the Cedar Key mole skink ( P. e. insularis), and the Egmont Key mole skink (known from a...

Researchers at WARC are determining if temporal mismatches between digital elevation models and land cover data can impact estimates of inundation of beach habitat for barrier islands and low-lying beaches off the Gulf Coast of Florida.

The ornate chorus frog, once common throughout its range, appears to be experiencing population declines. USGS has partnered with the Florida Fish and Wildlife Conservation Commission to assess the ornate chorus frog population status across its distribution.

While islands are some of the most biodiverse places on earth, they are also among the most threatened. Researchers from WARC and Florida Fish and Wildlife Conservation Commission are assessing the vulnerability of Florida’s coastal islands to inundation from sea-level rise and estimating potential loss of the terrestrial biodiversity on Florida’s islands.