Concept

Macaronésie

Résumé

Macaronesia (Macaronésia; Macaronesia) is a collection of four volcanic archipelagos in the North Atlantic, off the coasts of Africa and Europe. Each archipelago is made up of a number of Atlantic oceanic islands, which are formed by seamounts on the ocean floor whose peaks have risen above the ocean's surface. Some of the Macaronesian islands belong to Portugal, some belong to Spain, and the rest belong to Cape Verde. Politically, the islands belonging to Portugal and Spain are part of the European Union. Geologically, Macaronesia is part of the African tectonic plate. Some of its islands – the Azores – are situated along the edge of that plate at the point where it abuts the Eurasian and North American plates. In one biogeographical system, the Cape Verde archipelago is in the Afrotropical realm while the other three archipelagos are in the Palearctic realm. According to the European Environment Agency, the three European archipelagos constitute a unique bioregion, known as the Macaronesian Biogeographic Region. The World Geographical Scheme for Recording Plant Distributions places the whole of Macaronesia in its botanical continent of Africa. Macaronesia has a combined population of 3,222,054 people; 2,172,944 (67%) in the Canary Islands, 561,901 (17%) in Cape Verde, 250,769 (8%) in Madeira and 236,440 (7%) in the Azores. The name Macaronesia is derived from the Greek words meaning 'islands of the fortunate' (μακάρων νήσοι, makárōn nēsoi). The name was first used by ancient Greek geographers to refer to any islands west of the Strait of Gibraltar. Macaronesia is occasionally misspelled Macronesia in false analogy with Micronesia, an unrelated group of archipelagos in the Pacific Ocean whose English name is also derived from Greek. Macaronesia consists of four main archipelagos. From north to south, these are: the Azores, an Autonomous Region of Portugal Madeira (including the Savage Islands), an Autonomous Region of Portugal the Canary Islands, an Autonomous Community of Spain Cape Verde, an independent West African country The islands of Macaronesia are volcanic in origin, and are thought to be the product of several geologic hotspots.

Source officielle

https://fr.wikipedia.org/wiki/Macaronésie

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