A mathematical model between keystone species: Bears, salmon and vegetation
Christopher Middlebrook,
Xiaoying Wang
Abstract:<abstract><p>We study an ecosystem of three keystone species: salmon, bears and vegetation. Bears consume salmon and vegetation for energy and nutrient intake, but the food quality differs significantly due to the nutritional level difference between salmon and vegetation. We propose a stoichiometric predator-prey model that not only tracks the energy flow from one trophic level to another but also nutrient recycling in the system. Analytical results show that bears may coexist with salmon and vege… Show more
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