Long-term dynamics in a metapopulation of the American pika.

摘要: ABSTRACT A 20‐yr study of a metapopulation the American pika revealed regional decline in occupancy one part large network habitat patches. We analyze possible causes this using spatially realistic model, incidence function model. The is best‐known mammalian example classical with significant population turnover, and it satisfies closely assumptions which was parameterized data on patch occupancy. model‐predicted incidences are consistent observed incidences, model predicts well turnover rate between four censuses. According to predictions, where has been relatively unstable prone oscillations occupancy, whereas other predicted be persistent. These results demonstrate how extinction‐coloni...