Geodesic
Nutrient-phytoplankton-zooplankton interaction with variable yields
Joydeb Bhattacharyya 1   ; Samares Pal 1
1 Department of Mathematics University of Kalyani Kalyani 741235, India
Applicationes Mathematicae, Tome 40 (2013) no. 3, pp. 327-349 Cet article a éte moissonné depuis la source Institute of Mathematics Polish Academy of Sciences

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A three dimensional predator-prey-resource model is proposed and analyzed to study the dynamics of the system with resource-dependent yields of the organisms. Our analysis leads to different thresholds in terms of the model parameters acting as conditions under which the organisms associated with the system cannot thrive even in the absence of predation. Local stability of the system is obtained in the absence of one or more of the predators and in the presence of all the predators. Under appropriate circumstances global stability of the system is obtained in the absence of the predator at the highest trophic level. Moreover, it is shown that the system undergoes Hopf bifurcation if the break-even concentration crosses a certain critical value. Computer simulations have been carried out to illustrate various analytical results.
DOI : 10.4064/am40-3-5
Keywords: three dimensional predator prey resource model proposed analyzed study dynamics system resource dependent yields organisms analysis leads different thresholds terms model parameters acting conditions under which organisms associated system cannot thrive even absence predation local stability system obtained absence predators presence predators under appropriate circumstances global stability system obtained absence predator highest trophic level moreover shown system undergoes hopf bifurcation break even concentration crosses certain critical value computer simulations have carried out illustrate various analytical results

Joydeb Bhattacharyya  1   ; Samares Pal  1

1 Department of Mathematics University of Kalyani Kalyani 741235, India 
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Joydeb Bhattacharyya; Samares Pal. Nutrient-phytoplankton-zooplankton interaction with variable yields. Applicationes Mathematicae, Tome 40 (2013) no. 3, pp. 327-349. doi: 10.4064/am40-3-5

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