Strong Allee effect results in:
A strong Allee effect creates a critical abundance or density at which population growth changes sign. Above the threshold, births can exceed deaths and recovery is possible; below it, mate limitation, inbreeding, or failure of cooperation makes growth negative and drives further decline. The threshold is therefore an unstable equilibrium with direct importance for conservation and biological invasions. Density dependence is identified by a change in a per-capita demographic rate as abundance changes. Negative density dependence restrains growth and can regulate abundance; positive density dep
Ref: Ecology: From Individuals to Ecosystems, Begon et al., 5th Ed., Ch. 5