Unpacking the Allee effect: determining individual-level mechanisms that drive global population dynamics
Nabil T Fadai, Stuart T Johnston, Matthew J Simpson
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences | Royal Society, The | Published : 2020
We present a solid theoretical foundation for interpreting the origin of Allee effects by providing the missing link in understanding how local individual-based mechanisms translate to global population dynamics. Allee effects were originally proposed to describe population dynamics that cannot be explained by exponential and logistic growth models. However, standard methods often calibrate Allee effect models to match observed global population dynamics without providing any mechanistic insight. By introducing a stochastic individual-based model, with proliferation, death and motility rates that depend on local density, we present a modelling framework that translates particular global Alle..View full abstract
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Awarded by Australian Research Council
This work is supported by the Australian Research Council (DP170100474, DE200100988). M.J.S. is also supported by the University of Canterbury Erskine Fellowship.