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Oscillations in large mammal populations: are they related to predation or rainfall?

Cyclic population dynamics is relatively common among populations of small mammals in high latitudes but is not yet established among African savanna ungulates. However, oscillations may be expected in large mammal populations subject to quasi-periodic oscillations in regional rainfall. We evaluated evidence for environmentally entrained oscillations in a large-mammal predator–prey system in Kruger National Park (KNP), South Africa, where rainfall exhibits quasi-periodic oscillations. The evaluation is based on analysis of comparative changes in the abundance of twelve ungulate species throughout

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