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- W1969735529 abstract "In ecology, prey switching refers to a predator's adaptive change of habitat or diet in response to prey abundance. In this paper, we study piecewise-smooth models of predator-prey interactions with a linear trade-off in a predator's prey preference. We consider optimally foraging predators and derive a model for a 1 predator-2 prey interaction with a tilted switching manifold between the two sides of discontinuous vector fields. We show that the 1 predator-2 prey system undergoes a novel adding-sliding-like (center to two-part periodic orbit; C2PO) bifurcation in which the prey ratio transitions from constant to time-dependent. Further away from the bifurcation point, the period of the oscillating prey ratio period doubles, suggesting a possible cascade to chaos. We compare our model predictions with data and demonstrate that we successfully capture the periodicity in the ratio between the predator's preferred and alternative prey types in data on freshwater plankton. Our study suggests that it is useful to investigate prey ratio as a possible indicator of how population dynamics can be influenced by ecosystem diversity." @default.
- W1969735529 created "2016-06-24" @default.
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- W1969735529 creator A5058684689 @default.
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- W1969735529 date "2014-01-01" @default.
- W1969735529 modified "2023-10-05" @default.
- W1969735529 title "Prey Switching with a Linear Preference Trade-Off" @default.
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- W1969735529 doi "https://doi.org/10.1137/130910920" @default.
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