Consumption threshold used to investigate stability and ecological dominance in consumer-resource dynamics

O.C. Collins and K.J. Duffy

Ecological Modelling, 2016, vol. 319, issue C, 155-162

Abstract: Understanding consumer resource population dynamics can be important to an understanding of the overall ecology of systems. For example, the tree-grass continuum dynamics of savannas, an important ecological biome, is influenced by the population dynamics. Here we investigate herbivory driven population dynamics of a savanna using a simple model of the interactions of the dominant players, namely: trees, grasses, browsers, grazers and mixed browsers-grazers. We introduce a consumption threshold that summarises some of the parameters and this is used as a guide to understanding the dynamics. This number is used in investigating system stability and sensitivity to parameter fluctuations. It is also used to identify degrees of ecological dominance.

Keywords: Wildlife modelling; Herbivory; Simulation; Stability; Hopf bifurcation (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:eee:ecomod:v:319:y:2016:i:c:p:155-162

DOI: 10.1016/j.ecolmodel.2015.03.021

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