Ecology
The Dry Tortugas are classified as a borderline sub-tropical-tropical ecosystem, hosting species that do not breed or are uncommon anywhere else in the continental United States.
Read more about this topic: Dry Tortugas National Park
Famous quotes containing the word ecology:
“... the fundamental principles of ecology govern our lives wherever we live, and ... we must wake up to this fact or be lost.”
—Karin Sheldon (b. c. 1945)