Beringia

Quick Facts: Who was Beringia?

Subject:

Beringia

Known for:

Prehistoric land bridge connecting Asia and North America, crucial for biological dispersal.

Verified Source:

2Day Chrono-Wiki & Primary Historical Archives

Origins & Early Life

Beringia is a prehistoric geographical region, defined as the land and maritime area bounded on the west by the Lena River in Russia; on the east by the Mackenzie River in Canada; on the north by 72° north latitude in the Chukchi Sea; and on the south by the tip of the Kamchatka Peninsula. It includes the Chukchi Sea, the Bering Sea, the Bering Strait, the Chukchi and Kamchatka peninsulas in Russia as well as Alaska in the United States and Yukon in Canada. The area includes land lying on the North American plate and Siberian land east of the Chersky Range. At various times, it formed a land bridge referred to as the Bering land bridge or the Bering Strait land bridge that was up to 1,000 km (620 mi) wide at its greatest extent and which covered an area as large as British Columbia and Alberta together, totaling about 1.6 million km2 (620,000 sq mi), allowing biological dispersal to occur between Asia and North America. Today, the only land that is visible from the central part of the Bering land bridge are the Diomede Islands, the Pribilof Islands of St. Paul and St. George, St. Lawrence Island, St. Matthew Island, and King Island.

Career & Major Achievements

It is believed that a small human population of at most a few thousand arrived in Beringia from eastern Siberia during the Last Glacial Maximum before expanding into the settlement of the Americas sometime before 23,000 and 21,000 years before present (YBP). This would have occurred as the American glaciers blocking the way southward melted but before the bridge was covered by the sea about 11,000 YBP. The remains of Late Pleistocene mammals that had been discovered on the Aleutians and islands in the Bering Sea at the close of the 19th century indicated that a past land connection might lie beneath the shallow waters between Alaska and Chukotka. The underlying mechanism was first thought to be plate tectonics, but by 1930 changes in the ice mass balance which led to global sea-level fluctuations were viewed as the cause of the Bering land bridge. In 1937, Eric Hultén proposed that around the Aleutians and the Bering Strait region were tundra plants that had originally dispersed from a now-submerged plain between Alaska and Chukotka, which he named Beringia after Vitus Bering who had sailed into the strait in 1728.

Enduring Legacy & Impact

The distribution of plants in the genera Erythranthe and Pinus are good examples of this, as very similar genera members are found in Asia and the Americas. American arctic geologist David Hopkins redefined Beringia to include portions of Alaska and Northeast Asia. Beringia was later regarded as extending from the Verkhoyansk Mountains in the west to the Mackenzie River in the east. During the Pleistocene epoch, global cooling led periodically to the expansion of glaciers and the lowering of sea levels; these processes created land connections in various regions around the globe. Today, the average water depth of the Bering Strait is 40–50 m (130–160 ft); therefore the land bridge opened when the sea level was more than 50 m (160 ft) below the current level.

Chronological Milestones & Life Events

1. 1930: 1930 Milestone — The underlying mechanism was first thought to be plate tectonics, but by 1930 changes in the ice mass balance which led to global sea-level fluctuations were viewed as the cause of the Bering land bridge.
2. 1937: 1937 Milestone — In 1937, Eric Hultén proposed that around the Aleutians and the Bering Strait region were tundra plants that had originally dispersed from a now-submerged plain between Alaska and Chukotka, which he named Beringia after Vitus Bering who had sailed into the strait in 1728.

Historical Fact-Check Quiz: Beringia

True or False: “The Bering Land Bridge was only visible today at the Diomede Islands and other small points.”

Answer (TRUE ⭕): The land bridge covered an area as large as British Columbia and Alberta together, totaling about 1.6 million km2 at its greatest extent.

Contemporary Figures & Related Historical Timelines

• Adolf Wölfli — Historical peer (Died in 1930) (1930): Swiss outsider artist known for meticulous, symbolic, and autobiographical works.
• Adonis (poet) — Historical peer (Born in 1930) (1930): Pioneering Syrian poet, essayist, and translator who revolutionized modern Arabic verse.
• Abdelaziz Bouteflika — Historical peer (Born in 1937) (1937): Algerian politician who served as the seventh President of Algeria from 1999 to 2019.
• Alain Badiou — Historical peer (Born in 1937) (1937): Influential French philosopher known for 'Being and Event' and universalism.
• Anton Raphael Mengs — Historical peer (Born in 1728) (1728): Pioneering Czech-born German Neoclassical painter of Danish descent.
• Chevalière d'Éon — Historical peer (Born in 1728) (1728): French diplomat, spy, and soldier known for her espionage and military service.

Frequently Asked Questions about Beringia