A General Consumer-Resource Population Model

Kevin Lafferty, Gulio De Leo, Cheryl Briggs, Andrew Dobson, Thilo Gross, Armand Kuris

Research output: Contribution to journalArticle (Academic Journal)peer-review

41 Citations (Scopus)

Abstract

Food-web dynamics arise from predator-prey, parasite-host, and herbivore-plant interactions. Models for such interactions include up to three consumer activity states (questing, attacking, consuming) and up to four resource response states (susceptible, exposed, ingested, resistant). Articulating these states into a general model allows for dissecting, comparing, and deriving consumer-resource models. We specify this general model for 11 generic consumer strategies that group mathematically into predators, parasites, and micropredators and then derive conditions for consumer success, including a universal saturating functional response. We further show how to use this framework to create simple models with a common mathematical lineage and transparent assumptions. Underlying assumptions, missing elements, and composite parameters are revealed when classic consumer-resource models are derived from the general model.
Original languageEnglish
Article numberaaa6224
Pages (from-to)845-857
Number of pages5
JournalScience
Volume349
Issue number6250
DOIs
Publication statusPublished - 21 Aug 2015

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