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Micronesia

Subregion of Oceania

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  • 7 chapters
Micronesia, a cultural and geographical area in the Pacific.
User:Kahuroa · Public domain

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Through Archipelago

The region has a tropical marine climate and is part of the Oceanian realm. It includes four main archipelagos—the Caroline Islands, the Gilbert Islands, the Mariana Islands, and the Marshall Islands — as well as numerous islands that are not part of any archipelago.

Political control of areas within Micronesia varies depending on the island, and is distributed among six sovereign nations. Some of the Caroline Islands are part of the Republic of Palau and some are part of the Federated States of Micronesia (often shortened to "FSM" or "Micronesia"—not to be confused with the identical name for the overall region). The Gilbert Islands (along with the Phoenix Islands and the Line Islands in Polynesia) comprise the Republic of Kiribati. The Mariana Islands are affiliated with the United States; some of them belong to the U.S. Territory of Guam and the rest belong to the U.S. Commonwealth of the Northern Mariana Islands. The island of Nauru is its own sovereign nation. The Marshall Islands all belong to the Republic of the Marshall Islands. The sovereignty of Wake Island is contested: it is claimed both by the United States and by the Republic of the Marshall Islands. The United States has actual possession of Wake Island, which is under the immediate administration of the United States Air Force.

Notwithstanding the fact that the notion of "Micronesia" has been quite well established since 1832 and has been used ever since, by most popular works, this set does not correspond to any geomorphological, archaeological, linguistic, ethnic or cultural unity, but on the contrary represents a disparate ensemble, with no real deep unity. In fact, "Micronesian people" does not exist as a subset of the sea-migrating Austronesian people, who may also include the Polynesian people and the hypothetical Australo-Melanesian or "Melanesian people".

Human settlement of Micronesia began several millennia ago. Based on the current scientific consensus, the Austronesian peoples originated from a prehistoric seaborne migration, known as the Austronesian expansion, from pre-Han Formosa, at around 3000 to 1500 BCE. Austronesians reached the northernmost Philippines, specifically the Batanes Islands, by around 2200 BCE. Austronesians were the first people to invent oceangoing sailing technologies (notably catamarans, outrigger boats, lashed-lug boat building, and the crab claw sail), which enabled their rapid dispersal into the islands of the Indo-Pacific. From 2000 BCE they assimilated (or were assimilated by) the earlier populations on the islands in their migration pathway.

The earliest known contact of Europeans with Micronesia was in 1521, when the Magellan expedition landed in the Marianas. Jules Dumont d'Urville is usually credited with coining the term "Micronesia" in 1832, but in fact, Louis Domeny de Rienzi used this term a year earlier.

Geography

Micronesia is a region in Oceania that includes approximately 2100 islands, with a total land area of 2,700 km2 (1,000 sq mi), the largest of which is Guam, which covers 582 km2 (225 sq mi). The total ocean area within the perimeter of the islands is 7,400,000 km2 (2,900,000 sq mi).

There are four main island groups in Micronesia:

This does not include the separate island nation of Nauru, along with other distinctly separate islands and smaller island groups.

Caroline Islands

The Caroline Islands are a widely scattered archipelago consisting of about 500 small coral islands, north of New Guinea and east of the Philippines. The Carolines consist of two nations: the Federated States of Micronesia, consisting of approximately 600 islands on the eastern side of the chain with Kosrae being the most eastern; and Palau consisting of 250 islands on the western side.

Gilbert Islands

The Gilbert Islands are a chain of sixteen atolls and coral islands, arranged in an approximate north-to-south line. In a geographical sense, the equator serves as the dividing line between the northern Gilbert Islands and the southern Gilbert Islands. The Republic of Kiribati contains all of the Gilberts, including the island of Tarawa, the site of the country's capital.

Mariana Islands

The Mariana Islands are an arc-shaped archipelago made up by the summits of fifteen volcanic mountains. The island chain rose as a result of the western edge of the Pacific Plate moving westward and plunging downward below the Mariana plate, a region that is the most volcanically active convergent plate boundary on Earth. The Marianas were politically divided in 1898, when the United States acquired title to Guam under the Treaty of Paris, 1898, which ended the Spanish–American War. Spain then sold the remaining northerly islands to Germany in 1899. Germany lost all of her colonies at the end of World War I and the Northern Mariana Islands became a League of Nations Mandate, with Japan as the mandatory. After World War II, the islands were transferred into the United Nations Trust Territory System, with the United States as Trustee. In 1976, the Northern Mariana Islands and the United States entered into a covenant of political union under which commonwealth status was granted the Northern Mariana Islands and its residents received United States citizenship.

Marshall Islands

The Marshall Islands are located north of Nauru and Kiribati, east of the Federated States of Micronesia, and south of the U.S. territory of Wake Island. The islands consist of 29 low-lying atolls and five isolated islands, comprising 1,156 individual islands and islets. The atolls and islands form two groups: the Ratak Chain and the Ralik Chain (meaning "sunrise" and "sunset" chains). All the islands in the chain are part of the Republic of the Marshall Islands, a presidential republic in free association with the United States. Having few natural resources, the islands' wealth is based on a service economy, as well as some fishing and agriculture. Of the 29 atolls, 24 are inhabited.

Bikini Atoll is an atoll in the Marshall Islands. There are 23 islands in the Bikini Atoll. The islands of Bokonijien, Aerokojlol and part of Nam were destroyed during nuclear tests that occurred there. The islands are composed of low coral limestone and sand. The average elevation is only about 2.1 metres (7 ft) above low tide level.

Nauru

Nauru, officially the Republic of Naoero, is an oval-shaped island country in the southwestern Pacific Ocean, 42 km (26 mi) south of the Equator, listed as the world's smallest republic, covering just 21 km2 (8 sq mi). With 12,511 residents, it is the third least-populated country, after Vatican City and Tuvalu. The island is surrounded by a coral reef, which is exposed at low tide and dotted with pinnacles. The presence of the reef has prevented the establishment of a seaport, although channels in the reef allow small boats access to the island. A fertile coastal strip 150 to 300 m (490 to 980 ft) wide lies inland from the beach.

Wake Island

Wake Island is a coral atoll with a coastline of 19 km (12 mi) just north of the Marshall Islands. It is an unorganized, unincorporated territory of the United States. Access to the island is restricted and all activities on the island are managed by the United States Air Force. While geographically adjacent, it is not ethnoculturally part of Micronesia, due to its historical lack of human inhabitation. Micronesians may have possibly visited Wake Island in prehistoric times to harvest fish, but there is nothing to suggest any kind of settlement.

Geology

The majority of the islands in the area are part of a coral atoll. Coral atolls begin as coral reefs that grow on the slopes of a central volcano. When the volcano sinks back down into the sea, the coral continues to grow, keeping the reef at or above water level. One exception is Pohnpei in the Federated States of Micronesia, which still has the central volcano and coral reefs around it.

Some islands, such as Yap, have a more unusual geological history: rather than just being young volcanic sediment, they consist of uplifted volcanic and metamorphic rocks that were deformed and thrust upward during tectonic movement involving the Yap Trench and surrounding plate boundaries.

Fauna

The Yap Islands host a number of endemic bird species, including the Yap monarch and the Olive white-eye, in addition to four other restricted-range bird species. The endangered Yap flying-fox, though often considered a subspecies of the Pelew flying fox or the Mariana fruit bat, is also endemic to Yap.

Climate

The region has a tropical marine climate moderated by seasonal northeast trade winds. There is little seasonal temperature variation. The dry season runs from December or January to June and the rainy season from July to November or December. Because of the location of some islands, the rainy season can also include typhoons. Micronesia has a hot and humid climate, between 30-32 °C with night lows of around 23-25 °C.

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