A general consumer-resource population model

Science
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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.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title A general consumer-resource population model
Series title Science
DOI 10.1126/science.aaa6224
Volume 349
Issue 6250
Year Published 2015
Language English
Publisher American Association for the Advancement of Science
Publisher location New York, NY
Contributing office(s) Western Ecological Research Center
Description 4 p.
First page 854
Last page 857
Online Only (Y/N) N
Additional Online Files (Y/N) N