Geography | |
---|---|
Location | Dry Tortugas at the end of Florida Keys, United States |
Coordinates | 24°37′57″N82°55′14″W / 24.6323745°N 82.9206767°W [1] |
Archipelago | Florida Keys |
Adjacent to | Gulf of Mexico |
Total islands | 7 |
Major islands | Garden Key |
Area | 49 acres (20 ha) |
Highest elevation | 10 ft (3 m) [2] |
Administration | |
United States | |
State | Florida |
County | Monroe County |
Census County Division | Lower Keys |
Demographics | |
Population |
|
Additional information | |
Time zone | |
• Summer (DST) |
Loggerhead Key is an uninhabited tropical island within the Dry Tortugas group of islands in the Gulf of Mexico. [3] At approximately 49 acres (19.8 hectares) in size, it is the largest island of the Dry Tortugas. [3] [4] [5] Despite being uninhabited, the island receives visitors, such as day visitors and campers. [3] The island only has a few built structures, including the Dry Tortugas Light and a lightkeeper's house that was constructed in the 1920s. [3] The island has drinking water derived using desalination technology and solar power. The drinking water is not available for the public and used exclusively by researchers who temporarily reside on the island for short periods of time. [3] The Carnegie Marine Biological Laboratory operated on Loggerhead Key from 1904 to 1939.
Loggerhead Key has a tropical savannah climate (Aw). Summers are long, hot and year round. The rainy season lasts from June to October with light rainfall when compared to the rest of Florida. Loggerhead Key is likely the driest place in Florida with the lowest amount of precipitation inches and precipitation days, being far from the Florida mainland where afternoon thunderstorms form with ease over the land.
Climate data for Loggerhead Key | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Mean daily maximum °F (°C) | 74 (23) | 76 (24) | 78 (26) | 83 (28) | 86 (30) | 90 (32) | 91 (33) | 92 (33) | 90 (32) | 85 (29) | 79 (26) | 76 (24) | 83 (28) |
Daily mean °F (°C) | 69.5 (20.8) | 70.5 (21.4) | 72.5 (22.5) | 77 (25) | 80 (27) | 83.5 (28.6) | 84.5 (29.2) | 85.5 (29.7) | 83.5 (28.6) | 80 (27) | 74.5 (23.6) | 71.5 (21.9) | 77.7 (25.4) |
Mean daily minimum °F (°C) | 65 (18) | 65 (18) | 67 (19) | 71 (22) | 74 (23) | 77 (25) | 78 (26) | 79 (26) | 77 (25) | 75 (24) | 70 (21) | 67 (19) | 72 (22) |
Average precipitation inches (mm) | 2.7 (69) | 1.8 (46) | 2 (51) | 1.9 (48) | 1.9 (48) | 3.3 (84) | 2.8 (71) | 3.7 (94) | 6 (150) | 4.6 (120) | 1.9 (48) | 2.1 (53) | 34.7 (882) |
Average precipitation days | 5 | 3 | 3 | 2 | 4 | 6 | 6 | 8 | 9 | 7 | 3 | 4 | 60 |
[ citation needed ] |
Loggerhead Key is named after the loggerhead sea turtle, an endangered marine reptile and species of sea turtle with a cosmopolitan distribution throughout the world. [3]
The Little Africa coral reef is located at Loggerhead Key. [4] The reef is home to various species of tropical fish, spiny lobster and several juvenile game fish. [4] Coral types include "various species of stony and gorgonian coral". [4]
The flora of Loggerhead Key includes mangrove, coconut palms, geiger trees, morning glory, sea lavender and cactus. [3] In the 1840s, the island was covered with white buttonwood trees, which were burned or cut down by island inhabitants. [6] Bay cedar existed on the island in the early 1900s. [6]
Fauna of Loggerhead Key includes sea turtles, which are monitored by park rangers with the Dry Tortugas National Park to document nesting and hatching rates. [7] The loggerhead sea turtle is also present on the island. [8] In August 2016, a National Park marine biologist stated that 113 loggerhead turtle nests existed on the island at that time. [8] This was the highest recorded nest rate compared previous years. [8]
The island also has brown pelicans. [7]
In 1972, hundreds of rhesus macaque monkeys were brought from India to Loggerhead Key by Charles River Laboratories. [9] [10] This was done to provide the monkeys a place to breed, to supply the animals for medical research laboratory experiments. [9] [10] Around 1,322 of the monkeys existed on the island between 1987 and 1990. [10]
The Dry Tortugas Light is a lighthouse located on Loggerhead Key. [4] [11] It began operations in 1858 and was decommissioned in 2014. [7] [12]
The Carnegie Marine Biological Laboratory, also referred to as the Tortugas Laboratory, was a marine biology laboratory and research facility constructed on the northern end of Loggerhead Key that operated from 1904 to 1939. [4] [13] [6] It was constructed and operated by the Carnegie Institution of Washington. [4] [14] [15] The Carnegie Marine Biological Laboratory performed some of the first research on Western hemisphere mangroves and coral reefs, marine life at the Loggerhead Key coral reefs, other marine life, and also performed underwater color and black-and-white photography there. [14] [15] Due to safety concerns regarding the hurricane season, research only occurred in the late spring and summer months. [6]
Biscayne National Park is an American national park located south of Miami, Florida in Miami-Dade County. The park preserves Biscayne Bay and its offshore barrier reefs. Ninety-five percent of the park is water, and the shore of the bay is the location of an extensive mangrove forest. The park covers 172,971 acres and includes Elliott Key, the park's largest island and northernmost of the true Florida Keys, formed from fossilized coral reef. The islands farther north in the park are transitional islands of coral and sand. The offshore portion of the park includes the northernmost region of the Florida Reef, one of the largest coral reefs in the world.
The Florida Keys are a coral cay archipelago off the southern coast of Florida, forming the southernmost part of the continental United States. They begin at the southeastern coast of the Florida peninsula, about 15 miles (24 km) south of Miami and extend in a gentle arc south-southwest and then westward to Key West, the westernmost of the inhabited islands, and on to the uninhabited Dry Tortugas. The islands lie along the Florida Straits, dividing the Atlantic Ocean to the east from the Gulf of Mexico to the northwest, and defining one edge of Florida Bay. The southern part of Key West is 93 miles (150 km) from Cuba. The Keys are located between about 24.3 and 25.5 degrees North latitude.
Dry Tortugas National Park is an American national park located about 68 miles (109 km) west of Key West in the Gulf of Mexico, in the United States. The park preserves Fort Jefferson and the several Dry Tortugas islands, the westernmost and most isolated of the Florida Keys. The archipelago's coral reefs are the least disturbed of the Florida Keys reefs.
The Florida Keys National Marine Sanctuary is a U.S. National Marine Sanctuary in the Florida Keys. It includes the Florida Reef, the only barrier coral reef in North America and the third-largest coral barrier reef in the world. It also has extensive mangrove forest and seagrass fields. The Florida Keys National Marine Sanctuary, designated in 1990, is the ninth national marine sanctuary to be established in a system that comprises 13 sanctuaries and two marine national monuments. The Florida Keys National Marine Sanctuary protects approximately 2,900 square nautical miles of coastal and ocean waters from the estuarine waters of south Florida along the Florida Keys archipelago, encompassing more than 1,700 islands, out to the Dry Tortugas National Park, reaching into the Atlantic Ocean, Florida Bay and the Gulf of Mexico.
The loggerhead sea turtle is a species of oceanic turtle distributed throughout the world. It is a marine reptile, belonging to the family Cheloniidae. The average loggerhead measures around 90 cm (35 in) in carapace length when fully grown. The adult loggerhead sea turtle weighs approximately 135 kg (298 lb), with the largest specimens weighing in at more than 450 kg (1,000 lb). The skin ranges from yellow to brown in color, and the shell is typically reddish brown. No external differences in sex are seen until the turtle becomes an adult, the most obvious difference being the adult males have thicker tails and shorter plastrons than the females.
The Federal Dependencies of Venezuela encompass most of Venezuela's offshore islands in the Caribbean Sea and the Gulf of Venezuela, excluding those islands that form the State of Nueva Esparta and some Caribbean coastal islands that are integrated with nearby states. These islands, with a total area of 342 square kilometres, are sparsely populated – according to the preliminary results of the 2011 Census only 2,155 people live there permanently, with another hundred from Margarita Island who live there seasonally to engage in fishing. Local government is officially under the authority of Central government in Caracas, although de facto power is often held by the heads of the sparse and somewhat isolated communities that decorate the territories.
The green sea turtle, also known as the green turtle, black (sea) turtle or Pacific green turtle, is a species of large sea turtle of the family Cheloniidae. It is the only species in the genus Chelonia. Its range extends throughout tropical and subtropical seas around the world, with two distinct populations in the Atlantic and Pacific Oceans, but it is also found in the Indian Ocean. The common name refers to the usually green fat found beneath its carapace, due to its diet strictly being seagrass, not to the color of its carapace, which is olive to black.
Mote Marine Laboratory is an independent, nonprofit, marine research organization based on City Island in Sarasota, Florida, with additional campuses in eastern Sarasota County, Boca Grande, Florida, and the Florida Keys. Founded in 1955 by Eugenie Clark in Placida, Florida, it was known as the Cape Haze Marine Laboratory until 1967. The laboratory aims to advance marine science and education, supporting conservation and sustainable use of marine resources. A public aquarium and associated education program interpret its research for the public.
Lady Elliot Island is the southernmost coral cay of the Great Barrier Reef, Australia. The island lies 46 nautical miles north-east of Bundaberg and covers an area of approximately 45 hectares. It is part of the Capricorn and Bunker Group of islands and is owned by the Commonwealth of Australia. The island is home to a small eco resort and an airstrip, which is serviced daily by flights from Bundaberg, Hervey Bay, Brisbane and the Gold Coast.
The Los Roques Archipelago is a federal dependency of Venezuela consisting of approximately 350 islands, cays, and islets in a total area of 40.61 square kilometers. The archipelago is located 128 kilometers (80 mi) directly north of the port of La Guaira, in the Caribbean Sea.
The Key West National Wildlife Refuge is a 189,497 acre (766.867 km2) National Wildlife Refuge located in Monroe County, Florida, between Key West, Florida and the Dry Tortugas. Only 2,019 acres (8.171 km2) of land are above sea level, on several keys within the refuge. These keys are unpopulated and are also designated as Wilderness within the Florida Keys Wilderness. The refuge was established to provide a preserve and breeding ground for native birds and other wildlife as well as to provide habitat and protection for endangered and threatened fish, wildlife, plants and migratory birds.
Bahia Honda is an island in the lower Florida Keys.
The Tortugas Banks are coral reefs that developed on a foundation of Pleistocene karst limestone at depths of 20 to 40 m. The banks are extensive with low coral diversity, but high coral cover. The most conspicuous coral is Montastraea cavernosa, and black coral (Antipatharia) are common on the outer bank edges. The banks are also used by groupers and snappers that support a major fishery. The banks lie within the Florida Keys National Marine Sanctuary.
The hawksbill sea turtle is a critically endangered sea turtle belonging to the family Cheloniidae. It is the only extant species in the genus Eretmochelys. The species has a global distribution that is largely limited to tropical and subtropical marine and estuary ecosystems.
The Florida Reef is the only living coral barrier reef in the continental United States. It lies a few miles seaward of the Florida Keys, is about 4 miles wide and extends 270 km (170 mi) from Fowey Rocks just east of Soldier Key to just south of the Marquesas Keys. The system encompasses more than 6,000 individual reefs. Florida waters are home to over 500 marine fish and mammal species along with more than 45 species of stony corals and 35 species of octocorals.
The Arrecifes de Cozumel National Park is off the coast of the island of Cozumel in the state of Quintana Roo, Mexico. The Cozumel reef system is part of the Mesoamerican Barrier Reef System, the second largest coral reef system in the world. Even though almost the entire island of Cozumel is surrounded by coral reefs, the park only encompasses the reefs on the south side of the island. It begins just south of the International Pier and continues down and around Punta Sur and up just a small portion of the east side of the island. The park contains both shallow and mesophotic coral reefs and extends to the 100 m depth isobar.
The St. Croix East End Marine Park (STXEEMP) was established to "protect territorially significant marine resources, and promote sustainability of marine ecosystems, including coral reefs, sea grass beds, wildlife habitats and other resources, and to conserve and preserve significant natural areas for the use and benefit of future generations." It is the U.S. Virgin Islands’ first territorially designated and managed marine protected area (MPA).
The Everglades & Dry Tortugas Biosphere Reserve is a UNESCO Biosphere Reserve in Florida and the Gulf of Mexico. The 636,411 hectares (2,457.20 sq mi) reserve encompasses Everglades National Park and Dry Tortugas National Park, including historic Fort Jefferson and the seven Dry Tortugas islands.
The East African coral coast is a marine ecoregion along the eastern coast of Africa. It extends along the coasts of Kenya, Tanzania, and northern Mozambique, from Lamu in Kenya to Angoche in Mozambique. It adjoins the Northern Monsoon Current Coast ecoregion to the north, and the Bight of Sofala/Swamp Coast ecoregion to the south.
The Northern Monsoon Current coast is a marine ecoregion along the eastern coast of Africa. It extends along a portion of the coasts of Somalia and Kenya, from south of Lamu in Kenya to north of Mogadishu in Somalia. It adjoins the Central Somali coast ecoregion to the north, and the East African coral coast ecoregion to the south.
This article incorporates public domain material from websites or documents of the National Park Service .