Question: The Everglades & Dry Tortugas Biosphere Reserve encompasses Everglades National Park and which national park in the United States about 68 mi west of Key West in the Gulf of Mexico?

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Cape Horn Biosphere Reserve: The Cape Horn Biosphere Reserve (Cabo de Hornos Biosphere Reserve) is located in the extreme south of Chile and comprises marine areas, islands, fjords, channels, forests and moorland.  It covers an area of approximately 49000 km2 .  All biosphere reserves include core zones (no significant infrastructure development), buffer zones (light development) and transition zones (more traditional development under a sustainable rubric).  In the case of Cape Horn Biosphere Reserve, the core zone is constituted of Alberto de Agostini National Park and Cabo de Hornos National Park, which are strictly protected under Chilean law and under the biosphere reserve status cannot have infrastructure for lodging.

Ciénaga de Zapata Biosphere Reserve: The Ciénaga de Zapata Biosphere Reserve (established 2000) is a UNESCO Biosphere Reserve situated on the southern coast of Cuba at Matanzas province.  The 628,171 ha reserve encompasses the Zapata Swamp and is one of the largest and most important wetlands in the Caribbean region with a marine southern borderline.  Ciénaga de Zapata was designated a Ramsar site in 2001.  This area is a cluster biosphere reserve with several core areas, highly valuable for conservation located in the Ciénaga de Zapata National Park.

Riding Mountain Biosphere Reserve: Riding Mountain Biosphere Reserve (RMBR) is a UNESCO World Biosphere Reserve designated by the United Nations Educational, Scientific and Cultural Organization (UNESCO) in 1986 as part of its Man and the Biosphere Programme.  The RMBR, which encompasses Riding Mountain National Park and twelve surrounding municipalities in the province of Manitoba, is one of 16 Biosphere Reserves in Canada.  Ecologically sensitive ecosystems include the grasslands, deciduous forest and boreal forest.  Although grasslands occupy only 7,400 of the total 1,331,800 hectares, they are considered of national importance since they exist as discrete units and the rare climax rough fescue community represents the eastern extent of its range.  The Biosphere Reserve extends the protection of these ecosystems outside of park boundaries.  Municipalities in the Riding Mountain Biosphere Reserve include Clanwilliam – Erickson, Dauphin, Gilbert Plains, Grandview, Harrison Park, Lakeshore, McCreary, Rosedale, St. Rose, Riding Mountain West, Rossburn, and Yellowhead.  First Nations in the Biosphere Reserve include Rolling River First Nation, Keeseekoowenin First Nation, Waywayseecappo First Nation, and Tootinaowaziibeeng First Nation.  Asessippi Provincial Park and Duck Mountain Provincial Forest also border the Biosphere Reserve.

Everglades &amp; Dry Tortugas Biosphere Reserve: The Everglades & Dry Tortugas Biosphere Reserve (established 1976) is a UNESCO Biosphere Reserve in Florida and the Gulf of Mexico.  The 636,411 ha reserve encompasses Everglades National Park and Dry Tortugas National Park, including historic Fort Jefferson and the seven Dry Tortugas islands.

Dry Tortugas National Park: Dry Tortugas National Park is a national park in the United States about 68 mi west of Key West in the Gulf of Mexico.  The park preserves Fort Jefferson and the seven 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.

Dry Tortugas Ferry to Fort Jefferson: The Dry Tortugas Ferry to Fort Jefferson is a visitor attraction in Key West, Florida.  Service is provided by the "Yankee Freedom III", a high-speed Incat-designed catamaran that takes visitors on the almost 70 mi trip out to Fort Jefferson in the Dry Tortugas National Park.  The service is a licensed National Park Service concessioner, and the only provider of scheduled ferry access to the Dry Tortugas for a ten-year term through 2020.

Dry Tortugas: The Dry Tortugas are a small group of islands, located in the Gulf of Mexico at the end of the Florida Keys, United States, about 67 mi west of Key West, and 37 mi west of the Marquesas Keys, the closest islands.  Still further west is the Tortugas Bank, which is submerged.  The first Europeans to discover the islands were the Spanish in 1513, led by explorer Juan Ponce de León.  They are an unincorporated area of Monroe County, Florida, and belong to the Lower Keys Census County Division.  With their surrounding waters, they constitute the Dry Tortugas National Park.

Mapimí Biosphere Reserve: The Mapimí Biosphere Reserve (Spanish: "Reserva de la Biósfera de Mapimí" ) (established 1977) is a UNESCO Biosphere Reserve located in the state of Durango in northern Mexico.  It is one of three biosphere reserves representing the Chihuahuan Desert (along with Big Bend Biosphere Reserve and National Park in western Texas and Jornada Biosphere Reserve in New Mexico).  The 342,388 ha reserve is situated between the Neotropical and Neartic biogeographical regions, in the Bolsón de Mapimí 1,150 m above sea level.  It contains three core areas in the "Sierra de la Campana", the "Laguna de las Palomas", a salt lagoon, and a desert habitat called "Dunas de la Soledad".  It comprises fragile warm desert and semi-desert ecosystems and rich, highly adapted but vulnerable plant systems, mainly xerophytic matorral scrub, and animal species such as the puma ("Puma concolor"), mule deer ("Odocoileus hemionus"), sandhill crane ("Grus canadensis") and the kit fox or "zorrita del desiert" ("Vulpes macrotis") along with scrub and desert grasslands.

Fort Jefferson (Florida): Fort Jefferson is a massive but unfinished coastal fortress.  It is the largest brick masonry structure in the Americas, and is composed of over 16 million bricks.  Among United States forts, only Fort Monroe in Virginia and Fort Adams in Rhode Island are larger.  The fort is located on Garden Key in the lower Florida Keys within the Dry Tortugas National Park, about 70 mi west of the island of Key West.  The Dry Tortugas are part of Monroe County, Florida, United States.

Everglades National Park: Everglades National Park is a U.S. National Park in Florida that protects the southern 20 percent of the original Everglades.  In the United States, it is the largest tropical wilderness, the largest wilderness of any kind east of the Mississippi River, and is visited on average by one million people each year.  It is the third-largest national park in the lower 48 states after Death Valley and Yellowstone.  It has been declared an International Biosphere Reserve, a World Heritage Site, and a Wetland of International Importance, one of only three locations in the world to appear on all three lists.

Supporting paragraphs: Everglades &amp; Dry Tortugas Biosphere Reserve Dry Tortugas National Park
Answer: Dry Tortugas National Park