Preventing ecological tipping in drylands

Many pastoral communities depend on drylands, together with their livestock, but these areas are highly susceptible for droughts and overgrazing. Drylands are characterized by several ecological tipping points that can cause land degradation. We will study decisions of pastoral communities about the number of livestock, grazing time and fire frequency to prevent the grazing systems to collapse. This will be done by investigating (1) how socially optimal policies affect these tipping points, (2) the effects of absence of cooperation between different pastoral communities, and (3) how stable coalitions can prevent collapse.