Modelling plant compensatory effects in plant-insects dynamics

Modelling plant-pest interactions is not an obvious task since the involved processes are numerous and complex. We propose a minimal model based on trophic relations and the concept of plant compensation capacity. We only consider three main components in our system: the plant foliar biomass, the co...

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Main Authors: Lebon, Audrey, Dumont, Yves, Grognard, Frederic, Mailleret, Ludovic
Format: Conference Proceeding
Language:English
Subjects:
bifurcation diagram
crop protection
Mathematical modelling
plant compensation
plant-insect interactions
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Dumont, Yves
Grognard, Frederic
Mailleret, Ludovic
description Modelling plant-pest interactions is not an obvious task since the involved processes are numerous and complex. We propose a minimal model based on trophic relations and the concept of plant compensation capacity. We only consider three main components in our system: the plant foliar biomass, the compensation capacity, and the pest population. We prove that there exist two threshold parameters, N 1 and N 2 , and show that the system admits different equilibria, which are locally asymptotically stable or unstable, depending on the value of the previous threshold parameters. Finally, we summarize our theoretical results in a bifurcation diagram that allows to discuss possible control strategies to lower the impacts of the pest or even to obtain a better biomass yield.
doi_str_mv 10.1109/PMA.2012.6524836
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subjects bifurcation diagram
crop protection
Mathematical modelling
plant compensation
plant-insect interactions
title Modelling plant compensatory effects in plant-insects dynamics
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