Joint impact of fishing and ecotourism in the Sundarbans: a theoretical perspective

被引：0
作者：
Kar T.K. [1 ]
Das D. [2 ]
Pujaru K. [1 ]
机构：
[1] Department of Mathematics, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, 711103, West Bengal
[2] Department of Mathematics, B.P. Poddar Institute of Management and Technology, Kolkata, 700052, West Bengal
来源：
International Journal of Dynamics and Control | 2020年 / 8卷 / 03期
关键词：
Ecotourism; Fisheries; Harvesting; Maximum sustainable yield; Predator prey; Sundarbans;
D O I：
10.1007/s40435-019-00597-8
中图分类号：
X17 [环境生物学];
学科分类号：
071012 ; 0713 ;
摘要：
Using a generalist predator–prey system, we describe a theoretical aspect of economic and sustainability issues in the context of a complex ecosystem of Sundarbans coastal area, with a larger part located in Bangladesh and a smaller part in India. Predator species are considered only for the purpose of ecotourism and prey species are subject to fishing only. First we have studied the relevance of tourist entrance fee on total income gained from ecotourism and fishing. It is found that the total rent increases with the increase of entrance fee up to a certain threshold and then it decreases. Next the impact of fishing effort is studied on maximizing the total rent, and similar qualitative behavior is found as in the case of tourist entrance fee. Following this, the total rent is optimized in respect to both tourist entrance fee and fishing effort with three different level of tourists sensitivity on predator population. Result show that maximum total rent is always higher if more importance is given to ecotourism than fishing. Finally, MSY policy and its consequences on ecotourism and fishing are also studied. It is observed that MSY approach is a sustainable management policy to protect both the species even if the ecotourism is implemented along with fishing. This model can be used to determine the optimal choice of tourist entrance fee and fishing effort when the real data are available for the Sundarbans. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
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页码：792 / 804
页数：12
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  • [1] Myers R.A., Baum J.K., Shepherd T.D., Powers S.P., Peterson C.H., Cascading effects of the loss of apex predatory sharks from a coastal ocean, Science, 315, 5820, pp. 1846-1850, (2007)
  • [2] Kar T., Conservation of a fishery through optimal taxation: a dynamic reaction model, Commun Nonlinear Sci Numer Simul, 10, 2, pp. 121-131, (2005)
  • [3] Chakraborty K., Kar T., Economic perspective of marine reserves in fisheries: a bioeconomic model, Math Biosci, 240, 2, pp. 212-222, (2012)
  • [4] Ghosh B., Pal D., Kar T., Valverde J.C., Biological conservation through marine protected areas in the presence of alternative stable states, Math Biosci, 286, pp. 49-57, (2017)
  • [5] Paul P., Ghosh B., Kar T., Impact of species enrichment and fishing mortality in three species food chain models, Commun Nonlinear Sci Numer Simul, 29, 1-3, pp. 208-223, (2015)
  • [6] Ghosh B., Kar T., Sustainable use of prey species in a prey–predator system: jointly determined ecological thresholds and economic trade-offs, Ecol Model, 272, pp. 49-58, (2014)
  • [7] Schaefer M.B., Some aspects of the dynamics of populations important to the management of the commercial marine fisheries, Inter-Am Trop Tuna Comm Bull, 1, 2, pp. 23-56, (1954)
  • [8] Clark C.W., The worldwide crisis in fisheries: economic models and human behavior, (2006)
  • [9] Legovic T., Klanjscek J., Gecek S., Maximum sustainable yield and species extinction in ecosystems, Ecol Model, 221, 12, pp. 1569-1574, (2010)
  • [10] Kar T., Ghosh B., Impacts of maximum sustainable yield policy to prey–predator systems, Ecol Model, 250, pp. 134-142, (2013)
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