Levins model: colonization-extinction dynamics across habitat patches
Occupied: 0/0 | p* = — | Status: —
Levins (1969) metapopulation model: dp/dt = cp(1−p) − ep. The equilibrium fraction p* = 1 − e/c exists only when c > e (persistence condition). Spatially explicit versions show that patch connectivity and area determine local colonization rates. Click patches to toggle habitat quality. Rescue effect: occupied patches have reduced extinction risk from immigration.