Impacts of predator–prey interaction on managing maximum sustainable yield and resilience
Articles
Kanisha Pujaru
Indian Institute of Engineering Science and Technology Shibpur
https://orcid.org/0000-0002-7451-2223
Tapan Kumar Kar
Indian Institute of Engineering Science and Technology Shibpur
https://orcid.org/0000-0001-7723-1489
Published 2020-05-01
https://doi.org/10.15388/namc.2020.25.16657
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Keywords

predator–prey
ecosystem services
maximum sustainable yield
ecological resilience
bifurcation

How to Cite

PujaruK. and KarT. K. (2020) “Impacts of predator–prey interaction on managing maximum sustainable yield and resilience”, Nonlinear Analysis: Modelling and Control, 25(3), pp. 400–416. doi: 10.15388/namc.2020.25.16657.

Abstract

This paper gives a broad outline of some comparative analysis of two ecological services, namely, yield and resilience of a generalist predator–prey system. Although either prey or predator species can be harvested at maximum sustainable yield (MSY) level, yet there is a trade-off between yield and resilience. When both the species are harvested simultaneously, MSY increase by changing catchabilities always increases the system resilience both in prey- and predator-oriented fishery. In particular, a prey-oriented fishery with low prey catchability gives more yield and resilience but in case of predator-oriented fishery with high predator catchability, gives more of these ecological services. Thus to get both the optimum yield and resilience, a balanced harvesting approach is needed between the prey and predator trophic levels. Throughout the analysis, we use both the analytical as well as numerical techniques.  

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