Some of the Nation's most extensive complexes of salt marshes and mud flats occur along the coasts of the Beaufort Sea, Chukchi Sea, Bering Sea and the Gulf of Alaska. Rich calcareous fen at the base of Vortex Ridge, a large Limestone outcrop near Hoonah, Alaska. Vigorous plant growth reflects neutral soil pH and high nutrient levels. Riverine system along Glenn Highway between Tok and Gulkana, Alaska. Thaw lakes and wet tundra near Prudhoe Bay, North Slope.
Tidal mud flats near Anchorage, Alaska.
Tidal ranges exceeds 30 ft in this area. Salt water marsh in southeast Alaska near Juneau. Temporarily flooded riparian shrubs along Tanana River, interior Alaska. Moist and wet tundra complex on Yukon - Kuskokwin Delta. Poor fen - bog complex in southeast Alaska near Juneau.