This article was accepted into the corpus but its outbound wikilinks were never NER-processed — typical at the deepest BFS hop or when the run's entity cap was reached. No expansion funnel to show.
| Atlantic islands | |
|---|---|
| Name | Atlantic islands |
| Location | Atlantic Ocean |
| Total islands | Hundreds |
| Major islands | Iceland, Greenland, Sicily, Great Britain, Ireland, Madeira Islands, Azores, Canary Islands |
| Area km2 | Varies |
| Highest m | Varies |
| Population | Varies |
| Density km2 | Varies |
Atlantic islands are the archipelagos, island groups, and continental islands located within or bordering the Atlantic Ocean. They span from the Arctic margins around Greenland and the Svalbard archipelago to subantarctic features near South Georgia and the South Sandwich Islands, linking diverse geological provinces such as the Mid-Atlantic Ridge, passive margins off West Africa, and volcanic hotspots like the Azores triple junction and the Canary hotspot. These islands have played pivotal roles in navigation, colonization, trade, and scientific exploration involving actors such as Christopher Columbus, Vasco da Gama, Ferdinand Magellan, and institutions like the Royal Society.
The Atlantic islands encompass continental fragments like Great Britain, Ireland, and Newfoundland and Labrador alongside volcanic chains such as the Azores, Canary Islands, and Madeira Islands, and coral atolls in the Bahamas and Bermuda. Plate tectonics involving the North American Plate, Eurasian Plate, and African Plate shape features like the Mid-Atlantic Ridge and the Gibraltar Arc, while hotspot volcanism produces edifices tied to the Iceland plume and the Canary hotspot. Glacial history related to the Last Glacial Maximum sculpted fjords in Greenland and Norway and formed raised beaches on islands like Shetland and Faroe Islands. Oceanographic dynamics including the Gulf Stream, North Atlantic Drift, and the Benguela Current influence sedimentation patterns, erosion, and coastal morphology around islands such as Cape Verde and Sao Tome and Principe.
Islands like Madagascar (Indian Ocean proximate but biogeographically compared in literature), Galápagos Islands (Pacific analogue), and Atlantic islands display high endemism evident in taxa on Iberian Peninsula-derived islands, the Macaronesia groups (Azores, Madeira Islands, Canary Islands', Cape Verde), and subpolar flora on Iceland and Svalbard. Bird migration corridors connecting North America and Europe involve stopovers at islands including Iceland, Greenland, Azores, and Bermuda with species studied by organizations like the Royal Society for the Protection of Birds and research programs at Cornell Lab of Ornithology. Marine ecosystems adjacent to islands host faunal assemblages such as North Atlantic right whale populations near Newfoundland and Sable Island and coral communities in the Caribbean Sea and Bahamas Bank, monitored by groups including the National Oceanic and Atmospheric Administration and the International Union for Conservation of Nature.
Atlantic islands were integral to prehistoric dispersals and historic maritime expansion: Norse colonization reached Greenland and parts of the North Atlantic from Iceland and influenced contact with Western Europe; Phoenician and Roman maritime activity touched islands near Iberia; the Age of Discovery saw Christopher Columbus, backed by the Catholic Monarchs, use islands like the Canary Islands and Madeira as waypoints. Colonial empires—Portuguese Empire, Spanish Empire, British Empire, French colonial empire, and Dutch Empire—established settlements and plantation economies on islands such as Cape Verde, São Tomé and Príncipe, Bermuda, Barbados, and Jamaica. Conflicts including the Seven Years' War, Napoleonic Wars, and Spanish–American War affected island sovereignty and trade, while movements like Abolitionism and treaties such as the Treaty of Tordesillas reshaped demographic and legal regimes.
Sovereignty across the Atlantic island realm is divided among states and overseas territories: examples include sovereign states Iceland, Ireland, Portugal (governing the Azores and Madeira Islands), Spain (administering the Canary Islands), and the United Kingdom (holding territories such as Bermuda, Falkland Islands, and Saint Helena, Ascension and Tristan da Cunha). The United States governs insular areas like Puerto Rico and the U.S. Virgin Islands, while France administers Guadeloupe and Martinique. International law frameworks, including the United Nations Convention on the Law of the Sea and adjudications by the International Court of Justice, have mediated maritime boundaries involving islands such as Rockall and disputes involving Ildefonso Islands-type claims. Regional organizations like the European Union, Caribbean Community (CARICOM), and the African Union include island members or partners shaping policy and aid.
Atlantic island economies depend variably on tourism in destinations like Canary Islands, Madeira, and Bermuda; fisheries off Newfoundland and Labrador, Iceland, and Mauritania; agriculture on islands such as São Miguel (Azores) and Madeira Island; and extractive resources including offshore hydrocarbons near Celtic Sea and minerals in sectors influenced by corporations from United States, United Kingdom, and Norway. Renewable resources—namely offshore wind projects in the North Sea margins, tidal projects near France and Portugal, and geothermal exploitation in Iceland—are increasingly significant, involving firms like Siemens Gamesa and institutions such as the International Renewable Energy Agency. Trade routes through chokepoints like the Strait of Gibraltar and ports such as Lisbon, Kingston, Jamaica, and Reykjavík connect island economies to continents.
Maritime and aviation links underpin island connectivity: shipping lanes managed by organizations like the International Maritime Organization and airlines such as Iberia, British Airways, and TAP Air Portugal operate routes between island hubs including Madeira Airport, Gander International Airport, and Reykjavík Airport. Submarine cable systems traverse the Atlantic—examples include historic transatlantic telegraph cables culminating in networks operated by consortia like AE Connect—and satellite services provided by firms such as Eutelsat and SpaceX enhance telecommunications. Lighthouses associated with maritime safety, exemplified by those on Shetland and Cape Verde, complement search and rescue coordinated by agencies like Coast Guard (United States) and national coast guard services.
Atlantic islands face challenges from sea-level rise linked to Intergovernmental Panel on Climate Change assessments, extreme storms like Hurricane Katrina analogues affecting the Caribbean, invasive species as documented in case studies on Galápagos analogues and Shetland ecosystems, and overfishing impacting stocks assessed by the International Council for the Exploration of the Sea. Conservation responses include protected areas under designations from the International Union for Conservation of Nature and UNESCO World Heritage Sites such as Giant's Causeway and cultural landscapes in Madeira, alongside scientific research by institutions like Scripps Institution of Oceanography and Woods Hole Oceanographic Institution. Multilateral initiatives—climate action commitments under Paris Agreement and regional marine protection agreements—seek to reconcile development with resilience for island communities.
Category:Islands of the Atlantic Ocean