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

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  • Collins, O.C.
  • Duffy, K.J.

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.

Suggested Citation

  • Collins, O.C. & Duffy, K.J., 2016. "Consumption threshold used to investigate stability and ecological dominance in consumer-resource dynamics," Ecological Modelling, Elsevier, vol. 319(C), pages 155-162.
    • Handle: RePEc:eee:ecomod:v:319:y:2016:i:c:p:155-162
    DOI: 10.1016/j.ecolmodel.2015.03.021
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    References listed on IDEAS

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    1. Jayanth R. Banavar & Amos Maritan & Andrea Rinaldo, 1999. "Size and form in efficient transportation networks," Nature, Nature, vol. 399(6732), pages 130-132, May.
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