St. Matthew Island
|Area||137.857 sq mi (357.048 km2)|
|Length||51 km (31.7 mi)|
|Highest elevation||1,476 ft (449.9 m)|
St. Matthew Island is a remote island in the Bering Sea in Alaska, 295 km (183 mi) WNW of Nunivak Island. The island has a land area of 137.857 sq mi (357.05 km2), making it the 43rd largest island in the United States. Its most southerly point is Cape Upright which features cliff faces which exceed 1,000 feet (300 m). Similar heights are found at Glory of Russia Cape on the north, and the highest point, 1,476 feet (450 m) above sea level, lies south from the island center.
There is a small island off its northwestern point called Hall Island. The 3.1 miles (5.0 km) wide sound between both islands is called Sarichef Strait. A small rocky islet called Pinnacle Rock lies 9.3 miles (15.0 km) to the south of Saint Matthew Island. The entire island's natural scenery and wildlife is protected as it is part of the Bering Sea unit of the Alaska Maritime National Wildlife Refuge.
Geology and climate 
The climatic conditions in the entire Bering Sea Area, according to National Climatic Data Center (1986) is reported as maritime with "considerable wind and cool, humid and cloudy conditions" with mean annual temperature of 3.2 °C (37.8 °F) and annual precipitation of 389 mm (15.3 in), in the St Mathews Island. The geological formation recorded in St. Mathew Island consists of calc-alkaline volcanic rocks of Late Cretaceous and earliest tertiary age with Pergelic Cryaquolls and Pergelic Cryoborolls soil types.
Human habitation 
In prehistory, the island was inhabited by members of the Aleut tribe. The first recorded attempt at settlement occurred in 1809, when a Russian group led by Demid Ilyich Kulikalov, under the guise of the Russian-American Company, established an experimental outpost.
Presently, arctic foxes and insular voles are the only mammals resident on the island, though polar bears occasionally visit via pack ice. Notably, St. Matthew Island represents the southern limit of the North American range of polar bears.
In 1944, 29 reindeer were introduced to the island by the United States Coast Guard to provide an emergency food source. The coast guard abandoned the island a few years later, leaving the reindeer. Subsequently, the reindeer population rose to about 6,000 by 1963 and then died off in the next two years to 42 animals. A scientific study attributed the population crash to the limited food supply in interaction with climatic factors (the winter of 1963–64 was exceptionally severe in the region). By the 1980s, the reindeer population had completely died out. Environmentalists see this as an issue of overpopulation. For example, Garrett Hardin cited the "natural experiment" of St. Matthew Island of the reindeer population explosion and collapse as a paradigmatic example of the consequences of overpopulation in his essay An Ecolate View of the Human Predicament.
There is a small lake on the island that holds many different fish.
Lichen study 
Lichen studies were conducted on the island in the 1990s to prepare a list of lichens with their habitat, composition and distribution pattern. These studies were considered important for characterizing the eating habits of caribou and air quality. The vegetation of the islands has been classified as wet, moist and alpine tundra, based on landforms and drainage patterns. The plant communities were attributed to five categories. In the area of rock rubble fields and high ridges the vegetation was mainly crustacean lichens. Among the 148 lichen species of the islands, 125 showed the Arctic alpine geographic distribution, 74 boreal, 18 were coastal, 9 amphi-Berengian and 41 widespread, with many species falling into more than one category. The lichen diversity was characterized by wide-ranging Arctic-alpine and boreal species; it was evaluated as luxuriant that was linked to reindeer species disappearing from the area.
|Wikimedia Commons has media related to: St. Matthew Island|
- Stephen S. Talbot, Sandra Looman Talbot, John W. Thomson and Wilfred B. Schofield (2001). "Lichens from St. Mathew and St. Paul Islands, Bearing Sea Alaska". Bryologist 104 (1): 47–58. doi:10.1639/0007-2745(2001)104[0047:LFSMAS]2.0.CO;2. JSTOR 3244914.
- Black, Lydia T. Russians in Alaska: 1732–1867. University of Alaska Press, 2004. pp. 213
- Smithsonian: ''Microtus abbreviatus'' (2008). Mnh.si.edu. Retrieved on 2011-06-25.
- C. Michael Hogan (2008) Polar Bear: Ursus maritimus, Globaltwitcher.com, ed. N. Stromberg
- Alaska Science Forum (2003)''When Reindeer Paradise Turned to Purgatory''. Gi.alaska.edu (2003-11-13). Retrieved on 2011-06-25.
- David R. Klein, ''The Introduction, Increase, and Crash of Reindeer on St. Matthew Island'', Alaska Cooperative Wildlife Research Unit, University of Alaska. Dieoff.org. Retrieved on 2011-06-25.
- Hardin, Garrett (1985). "An Ecolate View of the Human Predicament". The Garrett Hardin Society. Retrieved 2011-02-09.
- St. Matthew Island: Block 1045, Census Tract 1, Bethel Census Area, Alaska United States Census Bureau