The woodlands ecoregion occupies two separate highland regions, covering portions of northern Chad, southwestern Egypt, southern Libya, and northwestern Sudan.

[2] The Tibesti (and to a lesser extent the Jebel Uweinat massif) foster higher, more regular rainfall and cooler temperatures than the surrounding Sahara.

The northern slopes are humid enough to support wetland species such as Juncus maritimus, Typha dominguensis, Scirpus holoschoenus, Phragmites australis and Equisetum ramosissimum.

[2] In habitats dominated by Schouwia and Tribulus terrestris in the wadis of this region, have an important role in the life cycle of the desert locust.

In some years, if conditions are right they can amass into large swarms, eventually becoming a plague which can reach distant areas of Africa and Europe, and have a huge economic impact by destroying crops.