Oases in the context of "Toubou"

In Egypt, the Western Desert is an area of the Sahara that lies west of the river Nile, up to the Libyan border, and south from the Mediterranean Sea to the border with Sudan. It is named in contrast to the Eastern Desert which extends east from the Nile to the Red Sea, although both are part of the broader Libyan desert in North Africa. The Western Desert is mostly rocky desert, save for an area of sandy desert, known as the Great Sand Sea, lying to the west and extending across the Libyan border.The desert covers an area of 680,650 km (262,800 sq mi) which is two-thirds of the land area of the country. Its highest elevation is 1,000 m (3,300 ft) in the Gilf Kebir plateau to the far south-west of the country, on the Egypt-Sudan-Libya border.The Western Desert is barren and uninhabited save for a chain of oases which extend in an arc from Siwa, in the north-west, to Kharga in the south.It has been the scene of conflict in modern times, particularly during the Second World War.

Administratively the Western Desert is divided between various governorates; in the north and west, the Matrouh Governorate administers the area from the Mediterranean south to approx 27°40' N latitude, and the New Valley Governorate from there to the Sudan border, while in the east parts of the Western Desert lie in the Giza, Fayyum, Beni Suef, and Minya Governorates.

Kufra, Kufrah or Kofra (Arabic: الكفرة Al Kufra), also spelled Cufra in Italian, is the largest district of Libya and the second largest such district in Africa. It is slightly smaller than the country of Turkmenistan. Its capital is Al Jawf, one of the oases in Kufra basin. There is a very large oil refinery near the capital. In the late 15th century, Leo Africanus reported an oasis in the land of the Berdoa, visited by a caravan coming from Awjila. It is possible that this oasis in question was either the Al Jawf or the Taiserbo oasis, and on early modern maps, the Al Kufra region was often labelled as Berdoa based on this report.

Hotan Prefecture (see also § Etymology) is located in the Tarim Basin region of southwestern Xinjiang, China, bordering the Tibet Autonomous Region to the south and Union Territory of Ladakh and Gilgit-Baltistan to the west. The vast majority of the Aksai Chin region which is disputed between China and India is administered as part of Hotan Prefecture. The seat of Hotan Prefecture is Hotan and its largest county by population is Karakax County. The vast majority of the residents of the prefecture are Muslim Uyghurs and live around oases situated between the desolate Taklamakan Desert and Kunlun Mountains.

The region was the center of the ancient Iranian Saka Buddhist Kingdom of Khotan. Later, the region was part of the Kara-Khanid Khanate, followed by the Qara Khitai, Chagatai Khanate, Moghulistan and the Dzungar Khanate, which was conquered by the Qing dynasty of China. Hotan became part of Xinjiang under Qing rule. In the 1930s, the Khotan Emirate declared independence from China. The People's Liberation Army entered Hotan in 1949.

The Toubou or Tubu (from Old Tebu, meaning "rock people") are an ethnic group native to the Tibesti Mountains that inhabit the central Sahara in northern Chad, southern Libya, northeastern Niger, and northwestern Sudan. They live either as herders and nomads or as farmers near oases. Their society is clan-based, with each clan having certain oases, pastures and wells.

The Toubou are generally divided into two closely related groups: the Teda (or Tuda, Téda, Toda, Tira) and the Daza (or Dazzaga, Dazagara, Dazagada). They are believed to share a common origin and speak the Tebu languages, which are from the Saharan branch of the Nilo-Saharan language family. Tebu is divided further into two closely related languages, called Tedaga (Téda Toubou) and Dazaga (Daza Toubou). Of the two groups, the Daza, found to the south of the Teda, are more numerous.

Insular biogeography or island biogeography is a field within biogeography that examines the factors that affect the species richness and diversification of isolated natural communities. The theory was originally developed to explain the pattern of the species–area relationship occurring in oceanic islands. Under either name it is now used in reference to any ecosystem (present or past) that is isolated due to being surrounded by unlike ecosystems, and has been extended to mountain peaks, seamounts, oases, fragmented forests, and even natural habitats isolated by human land development. The field was started in the 1960s by the ecologists Robert H. MacArthur and E. O. Wilson, who coined the term island biogeography in their inaugural contribution to Princeton's Monograph in Population Biology series, which attempted to predict the number of species that would exist on a newly created island.

Hotan County (also known as Gosthana, Gaustana, Godana, Godaniya, Khotan, Hetian, Hotien) is a county in the southwest of the Xinjiang Uyghur Autonomous Region and is under the administration of the Hotan Prefecture. Almost all the residents of the county are Uyghurs and live around oases situated between the desolate Taklamakan Desert and Kunlun Mountains. Hotan County is the southernmost county-level division of Xinjiang. The county borders Karakax / Moyu County to the northwest, Hotan City and Lop County to the northeast, Qira County to the east, Pishan County to the west, and (in Aksai Chin) Rutog County, Tibet to the southeast. Hotan County administers most of Aksai Chin, an area disputed between China and India. The Line of Actual Control divides the India-controlled part of Ladakh union territory from the Aksai Chin area administered as part of southwest Hotan County.

The Faiyum Oasis (Arabic: واحة الفيوم Wāḥat al-Fayyum) is a depression or basin in the desert immediately west of the Nile river, 62 miles south of Cairo, Egypt. The extent of the basin area is estimated at between 1,270 km (490 mi) and 1,700 km (656 mi). The basin floor comprises fields watered by a channel of the Nile, the Bahr Yussef, as it drains into a desert hollow to the west of the Nile Valley. The Bahr Yussef veers west through a narrow neck of land north of Ihnasya, between the archaeological sites of El Lahun and Gurob near Hawara; it then branches out, providing agricultural land in the Faiyum basin, draining into the large saltwater Lake Moeris (Birket Qarun). In prehistory it was a freshwater lake, but is today a saltwater lake. It is a source for tilapia and other fish for the local area.

Differing from typical oases, whose fertility depends on water obtained from springs, the cultivated land in the Faiyum is formed of Nile mud brought by the Bahr Yussef canal, 24 km (15 miles) in length. Between the beginning of Bahr Yussef at El Lahun to its end at the city of Faiyum, several canals branch off to irrigate the Faiyum Governorate. The drainage water flows into Lake Moeris.