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Dynamics of starvation and recovery predict extinction risk and both Damuth’s law and Cope’s rule [Nature Communications]

Keywords : evolutionary theory, population dynamics

par Frédéric Magné - publié le

The eco-evolutionary dynamics of species are fundamentally linked to the energetic constraints of their constituent individuals. Of particular importance is the interplay between reproduction and the dynamics of starvation and recovery. To elucidate this interplay, here we introduce a nutritional state-structured model that incorporates two classes of consumers : nutritionally replete, reproducing consumers, and undernourished, nonreproducing consumers. We obtain strong constraints on starvation and recovery rates by deriving allometric scaling relationships and find that population dynamics are typically driven to a steady state.(...)

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