![]() NPS photo The sandy keys of Dry Tortugas National Park are in a state of constant change, subject to the influences of a full suite of environmental processes. Geology, tides and currents, water and air quality, weather, and climate are but a few of the many natural factors that help shape the development of land and waterscapes in the Dry Tortugas. The actions of humans also have had, and still have, a strong influence. Construction of Fort Jefferson and the structures on Loggerhead Key, the disturbance of natural processes, climate change, the introduction of nonnative species, and air, water, light, and noise pollution have all worked to undermine the integrity of the natural ecosystem. Learn about specific environmental factors at the links below. ![]() NPS photo The seven islands of Dry Tortugas National Park are just a tiny fraction of the park's geologic resources, most of which are submerged beneath the surrounding waters. ![]() NPS photo Management of invasive exotic plant and animal species became a priority in 1992 when Dry Tortugas National Park was established. |
Last updated: July 29, 2015