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.