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Komori :جزر القمر (in Arabic)
Archipel des Comores (in French)
|Major islands||Grande Comore (Ngazidja), Mohéli (Mwali), Anjouan (Nzwani), Mayotte (Maore)|
|Area||2,034 km2 (785 sq mi)|
|Highest elevation||2,361 m (7,746 ft)|
|Islands||Grande Comore (Ngazidja)
|Largest settlement||Moroni (capital) (pop. 60,200)|
|Population||1,008,246 (2016 ets.)|
The Comoro Islands or Comoros (Shikomori Komori; Arabic: جزر القمر, Juzur al-Qomor; French: Les Comores) form an archipelago of volcanic islands situated off the south-east coast of Africa, to the east of Mozambique and north-west of Madagascar. The islands are politically divided between Union of the Comoros (pop. 850,688) and two territories of France: the department of Mayotte (pop. 270,372) and the Glorioso Islands, a part of the Scattered Islands in the Indian Ocean, the 5th district of the French Southern and Antarctic Lands.
The Comoro Islands are located in the Mozambique Channel to the north-west of Madagascar and facing Mozambique. These volcanic islands, covering a total area of 2034 km2, are as follows:
- Ngazidja (also known as Grande Comore): the largest island of the Union of the Comoros, with its capital Moroni
- Ndzuwani (also known as Anjouan): part of the Union of the Comoros
- Mwali (also known as Mohéli): part of the Union of the Comoros
- Mayotte (also known as Maore or Mahori): a French overseas department. with its capital Mamoudzou. Mayotte is composed of two islands, Grande-Terre and Petite-Terre (also known as Pamanzi). where the Dzaoudzi–Pamandzi International Airport is located.
The Glorioso Islands, comprising Grande Glorieuse, Île du Lys and eight little rock islets, were administratively attached to the archipelago before 1975, and, geologically speaking, form a part of the archipelago.
Notable reefs that are part of the archipelago are as follows:
- Banc Vailheu, or Raya, a submerged volcano located 20 km west of Grand Comoro
- Banc du Geyser, a reef measuring 8 by 5 km in area, situated 130 km North-East of Grande-Terre
- Banc du Leven, a former island between Madagascar and Grande-Terre which is now submerged
The Comoros may have been settled as early as the 6th century; among the peoples who crossed the sea to populate the islands are Bantu-speaking peoples, Malagasy, Austronesians, Arabs, Portuguese, French, and Indians. Islam probably arrived during the 10th century. The Comoros islands formed, with Zanzibar, Pemba, Lamu, and the coastal towns of Kenya and Tanzania, a united and prosperous region of Swahili culture, trading in local goods which were exported to the African coast, Madagascar, the Middle East and India. In that period, political power was in the hands of local rulers. During their explorations of the Comoros region, the Portuguese made landfall on the Islands of the Moon, in 1505; kamar is Arabic for moon.
During the colonial period, French settlers established plantations, initially producing sugar, then, in the twentieth century, perfume plants and spices such as ylang ylang, vanilla and cloves as well as copra. In 1946, the became a French overseas territory.
In 1974, France organized a referendum for self-determination in the archipelago in which the population except in Mayotte voted overwhelmingly in favour of independence. Following the unilateral declaration of independence in 1975, France maintained sovereignty over Mayotte. The three remaining islands formed the Etat Comorian, which later became the Federal Islamic Republic of the Comoro Islands and is today the Union of the Comoros.
In 1997, demands for increased autonomy on the islands of Ndzuani (Anjouan) and Mwali (Moheli) led to the breakup of the Federal Islamic Republic. In 2001, the government reformed as the Union of the Comoros under a new constitution which gave each of the three islands more autonomy than had been enjoyed previously. In 2008, President of Anjouan refused to hold free elections. He was forced to flee following military intervention by troops of the Comorian Union and the African Union. The island country continues its present form of confederal government albeit with minor changes approved in referendums in 2009 and 2018.
Mayotte, which had voted to retain French suzerainty in the 1975 referendum, expressed a wish to accede to the status of a département d'outre-mer (DOM) (Overseas Department) following another referendum held on the island on the 29 March 2009. Mayotte officially became France's 101st department on 31 March 2011.
The Comoro Archipelago consists of volcanic islands. These volcanic islands, together with the high mountains in the north of Madagascar, were formed in the Tertiary and Quaternary periods. The island of Mayotte is the oldest one still above sea level and underwent three volcanic phases between 15 million and 500,000 years ago. The ages progressively decrease from east to west. Grande Comore is the youngest island and is still volcanically active. Karthala, a shield volcano occupying some two thirds of the island, rises to 2361 meters. The summit caldera is quite large, being approximately 3 x 4 km (1.9 x 2.5 miles) in size at the rim (2007). 
The Comoro Archipelago enjoys a tropical maritime climate, characterized by slight daytime temperature variations throughout the year of around 26 °C (78.8 °F) at sea-level and by abundant precipitation: 2,679 mm (105.5 in) a year. The average temperature of the sea water is 25 °C (77 °F). There are two seasons in the Comoros: the hot and humid season flowing in from the north-west from November to April and the dry season from May to October. The climate on Mayotte is, nevertheless, noticeably warmer and drier. The climate is also characterized by important local variations in temperature and precipitation according to altitude, relief and the degree of exposure to the elements. Annual precipitation therefore varies in the region of 1,000 to 6,000 mm (39.4 to 236.2 in) and the absolute minimum of 0 °C (32 °F) is reached on the summit of Karthala.
The hot, dry season is caused by a vast low pressure area which extends over a large part of the Indian Ocean and Central Africa. This low pressure favours gusty winds and cyclones. The last cyclone was "Gafilo" which passed close to the Comoros on 5 March 2004 causing great material damage. During the hot and humid season it can rain as much as 200 mm (7.9 in) in twenty-four hours. The dry season is calmer. The low pressure moves towards the continent of Asia (this is the monsoon, the wind blowing from the south-east) and an anticyclone forms below the Comoros. This still does not prevent the islands from having a few gusts of wind, but their intensity is a lot less than during the hot season.
The two winds that bring the two different seasons are called the Kashkasi (in November) and the Kusi.
Flora and fauna
The maki of Mayotte, a type of lemur found on this island, is protected by French law, and by local tradition; it is believed to have been introduced from Madagascar. Several mammals are endemic to the islands. A species of bat discovered by David Livingstone in 1863, previously abundant, has now been reduced to a population of about 1200 specimens, restricted to Anjouan and Moheli. A British preservation group sent an expedition to the Comoros in 1992, with the object of transporting some specimens to Great Britain, in order to form a reproducing colony.
Twenty-two species of birds are endemic to the archipelago, and seventeen of them only live on territories controlled by the Union; especially notable examples of these are the Karthala scops-owl, the Anjouan scops-owl and Humblot's flycatcher.
Partly as a result of international pressure during the 1990s, the government of the Union has begun to take greater care of the environment. Measures have been taken not only to preserve the rare fauna, but also to check the destruction of the environment, especially on Anjouan, which is densely populated. More precisely, in order to minimize the felling of trees for fuel, kerosene has been subsidized, and efforts are underway to replace the lost forest cover caused by the distillation of Ylang-ylang for perfume. The Fund for the Support of Community Development, sponsored by the International Development Association (IDA, a subsidiary of the World Bank) and the Comorian government, is applying itself to improving the water supply on the islands.
Like other islands in the region, these islands possess numerous endemic species; here are some of the most notable species:
- Livingstone's fruit bat, a very large endemic daytime bat, which eats fruit.
- The common brown lemur, a type of small lemur (Kima in Shikomori)
- Scolopendra, venomous centipedes that can reach up to 25 centimetres long.
- The coelacanth, a bony fish, known from fossils over 300 million years old.
- The gecko, a small lizard that feeds off insects, and is often found spotted on the ceilings of houses.
- The beaked dolphin; one pod is visible, most mornings, from the beach at Itsandra, close to Moroni, but there are also many others.
- The green turtle, most abundantly on Mohéli and Mayotte where they still come to lay eggs.
- The tailless tenrec, similar to a hedgehog but belonging to a different family of insectivores, the Tenrecidae, whose main stronghold is Madagascar.
On the Comoros there are numerous tropical ecosystems that are primarily dependent on the altitude. There you can find many kinds of tropical plants, large numbers of which are endemic. Like most islands, the diversity of the local flora suffers from two pressures, on the one hand the reduction of available space caused by the reduction of biotopes due to the invasion of humans in what used to be the wildest areas and on the other hand the invasion of exotic plant species such as guava trees. The flora has only been poorly studied, France has however been made attempts on Mayotte to fill in the gaps. Efforts to preserve species are still not enough to save the richest zones, and disturbances of biotopes are expected to take place for many years to come.
The Comoro Archipelago is divided between:
- The Union of the Comoros, a sovereign nation formed by the three islands of Grande Comore, Anjouan and Mohéli.
- Mayotte, an Overseas Department of the French Republic (département d'outre-mer). This island is also claimed by the Union of the Comoros according to Article 1 of its Constitution.
The United Nations General Assembly continued to condemn the French presence in Mayotte until 1994. France, however, used its power of veto in the UN to prevent the Security Council from passing a resolution condemning France.
The African Union judged the French presence on Mayotte to be illegal.
Mayotte became a French Department on 31 March 2011.
The Comoros underwent a political crisis that started off in 1997 with the separatism on Anjouan. The political authorities on the island had turned the population of the island against the central government, advocating at first reunification with France, and later a greater autonomy bordering on independence.
Since 2006, the Ex-President of the Union of the Comoros Ahmed Abdallah Sambi, who is originally from the island of Anjouan, has been in open conflict with the authorities of Anjouan, a conflict which ended in a military landing of the National Army of Development in order to re-establish the authority of the Union on the island.
- GlobalVolcanism Program: Karthala
- Esson J., M.F.J., Flower, D.F. Strong, B.G.J. Upton, and W.J. Wadsworth, Geology of the Comores archipelago western Indian Ocean Geological Magazine 107 (6) 549-557 1970 Flower, M.F.J., Evidence for the role of phlogopite in the genesis of alkali basalts Contrib. Mineral. Petrol. 32 (2) 126-137 1971 Flower, M.F.J., Rare earth element distribution in lavas and ultramafic xenoliths from the Comores archipelago, western Indian Ocean Contributions to Mineralogy and Petrology 31 (4) 335-346 1971 Flower, M.F.J., R N Thompson, One-atmosphere melting and crystallization relations of lavas from Anjouan Comores Archipelago western Indian Ocean Earth and Planetary Science Letters 12 (1) 97-107 1971 Flower, M.F.J., Petrology of volcanic rocks from Anjouan Comores archipelago, Bull, volcanol., 36 (1) 238-250 1973 Flower, M.F.J., Evolution of basaltic and differentiated lavas from Anjouan Comores Archipelago, Contrib. Mineral. Petrol., 38 (3) 237-260 1973 Flower, M.F.J., Trace-element distribution in lavas from Anjouan and Grande Comore western Indian Ocean Chem. Geol., 12 (2) 81-98 1973
- Russell Mittermeier; et al. (2006). Lemurs of Madagascar (2nd ed.). pp. 272–274. ISBN 1-881173-88-7.
- # ↑ document de l'Union africaine [archive]
- Esson J., M.F.J., Flower, D.F. Strong, B.G.J. Upton, and W.J. Wadsworth, Geology of the Comores archipelago western Indian Ocean Geological Magazine 107 (6) 549-557 1970
- Flower, M.F.J., Evidence for the role of phlogopite in the genesis of alkali basalts Contrib. Mineral. Petrol. 32 (2) 126-137 1971
- Flower, M.F.J., Rare earth element distribution in lavas and ultramafic xenoliths from the Comores archipelago, western Indian Ocean Contributions to Mineralogy and Petrology 31 (4) 335-346 1971
- Flower, M.F.J., R N Thompson, One-atmosphere melting and crystallization relations of lavas from Anjouan Comores Archipelago western Indian Ocean Earth and Planetary Science Letters 12 (1) 97-107 1971
- Flower, M.F.J., Petrology of volcanic rocks from Anjouan Comores archipelago, Bull, volcanol., 36 (1) 238-250 1973
- Flower, M.F.J., Evolution of basaltic and differentiated lavas from Anjouan Comores Archipelago, Contrib. Mineral. Petrol., 38 (3) 237-260 1973
- Flower, M.F.J., Trace-element distribution in lavas from Anjouan and Grande Comore western Indian Ocean Chem. Geol., 12 (2) 81-98 1973
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