Journal of Applied Probability, Vol. 26, No. 4 (Dec., 1989), pp. 685-694 (10 pages) We obtain an approximation to the mean time to extinction and to the quasi-stationary distribution for the standard ...
We develop a new discrete-time model, called the boundary-layer model, to describe the dynamics of single species that have a capacity for fast growth at very low population densities. The model ...