Editing Oasis (section)

==Distressed systems==
Many historic oases have struggled with drought and inadequate maintenance.

According to a United Nations report on the future of oases in the Sahara and [[Sahel]], "Increasingly{{nbsp}}... oases are subject to various pressures, heavily influenced by the effects of [[climate change]], decreasing groundwater levels and a gradual loss of cultural heritage due to a fading historical memory concerning traditional water management techniques. These natural pressures are compounded by demographic pressures and the introduction of modern water pumping techniques that can disrupt traditional resource management schemes, particularly in the North Saharan oases."<ref name="fao" />

For example, five historic oases in the [[Western Desert (Egypt)|Western Desert of Egypt]] ([[Kharga Oasis|Kharga]], [[Dakhla Oasis|Dakhla]], [[Farafra, Egypt|Farafra]], [[Bahariya Oasis|Baharyia]], and [[Siwa Oasis|Siwa]]) once had "flowing spring and wells" but due to the decline of groundwater heads because of overuse for land reclamation projects those water sources are no more and the oases suffer as a result.<ref>{{Cite journal |last1=Aziz |first1=Ameer |last2=Sabet |first2=Hassan S. |last3=Ghoubachi |first3=Saad Y. |last4=Abu Risha |first4=Usama A. |date=2022-07-01 |title=The origin and recharge conditions of groundwater in Farafra Oasis, Western Desert, Egypt |journal=Scientific African |language=en |volume=16 |pages=e01179 |doi=10.1016/j.sciaf.2022.e01179|bibcode=2022SciAf..1601179A |s2cid=248041232 |doi-access=free }}</ref>

Morocco has lost two-thirds of its oasis habitat over the last 100 years due to heat, drought, and [[water scarcity]].<ref name="Yale" /> The [[Ferkla Oases]] in Morocco once drew on water from the Ferkla, Sat and Tangarfa Rivers but they are now dry but for a few days a year.<ref name="Yale" />