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Chance of extinction of populations in food chain model under demographic stochasticity

Dept. of Mathematics, Govt. College of Engg. & Textile Technology, Berhampore, Murshidabad, West Bengal, PIN-742101 MO +919339831862, India

Special Issues: Mathematical Modeling to Solve the Problems in Life Sciences

The extinction of different species from the earth is increasing at an alarming rate. So, assessment of probability of extinction of different important species in our ecosystem could help us to take proper conservation policy for those population whose chance of extinction is high. In this paper a method is developed to find the probability of extinction of populations in a general n-trophic food chain model under demographic stochasticity. The birth-death process is used to incorporate the demographic stochasticity and the necessary mathematical expressions are obtained. The theoretical finding is validated by numerical simulation for a two dimensional predator-prey system.
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Keywords extinction probability; food chain; prey-predator model; population size; random variable; birth-death process

Citation: Bapi Saha. Chance of extinction of populations in food chain model under demographic stochasticity. Mathematical Biosciences and Engineering, 2019, 16(5): 3537-3560. doi: 10.3934/mbe.2019177


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