Maximum sustainable yield and species extinction in ecosystems

Legović, Tarzan; Klanjšček, Jasminka; Geček, Sunčana

doi:10.1016/j.ecolmodel.2010.03.024

Cited by 74 publications

(29 citation statements)

References 13 publications

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“…This prey-predator model is simple in the sense that the predator consumes the prey population according to a linear functional response and the intraspecific competition of the predator is not taken into account. Introducing proportional harvesting to either any one species or both the species with a combined harvesting effort, we have the following results proposed by Legovic et al [1]:…”

Section: Effect Of the Msy Policy In A Traditional Prey-predator Systemmentioning

confidence: 90%

“…It is observed that harvesting of the prey species at the MSY level preserves both the species. Legovic et al [1] proposed that in traditional prey-predator systems, fishing to reach MSY of the prey population only will cause extinction of the predator population. However, in the case of our HollingTanner prey-predator system, fishing of the prey species at the MSY level may be a sustainable fishing policy.…”

Section: Resultsmentioning

confidence: 99%

“…It is a well-established result that for model (1) the MSY occurs at e = r/2 and MSY = rk/4. To study the consequences of the MSY policy in a more general framework, Legovic et al [1] considered the following prey-predator system:…”

Section: Effect Of the Msy Policy In A Traditional Prey-predator Systemmentioning

confidence: 99%

“…How the above ecological differences affect the persistence of the entire system for fishing at the MSY or MSTY level is the main theme in this research. Hence we choose the Holling-Tanner prey-predator system and compare the results with recent literature [1] for a traditional prey-predator system.…”

mentioning

confidence: 99%

“…However, for a large number of independent populations, fishing to reach MSTY may cause the overfishing or extinction of some species. Legovic et al [1] demonstrated that the MSY (MSTY for multispecies harvesting) policy in an ecosystem will lead to the extinction of a large number of populations and they generalized the result in a food-chain and foodweb model. Recently, Legovic and Gecek [7] studied the impact of the MSY policy in a cooperative system and interestingly noticed that harvesting of all the species at the MSTY level will drive to extinction of the species with lower biotic potential and carrying capacity.…”

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confidence: 99%

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Maximum sustainable yield and species extinction in a prey–predator system: some new results

Ghosh

Kar

2013

J Biol Phys

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Though the maximum sustainable yield (MSY) approach has been legally adopted for the management of world fisheries, it does not provide any guarantee against from species extinction in multispecies communities. In the present article, we describe the appropriateness of the MSY policy in a Holling-Tanner prey-predator system with different types of functional responses. It is observed that for both type I and type II functional responses, harvesting of either prey or predator species at the MSY level is a sustainable fishing policy. In the case of combined harvesting, both the species coexist at the maximum sustainable total yield (MSTY) level if the biotic potential of the prey species is greater than a threshold value. Further, increase of the biotic potential beyond the threshold value affects the persistence of the system.

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Section: Effect Of the Msy Policy In A Traditional Prey-predator Systemmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Effect Of the Msy Policy In A Traditional Prey-predator Systemmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Maximum sustainable yield and species extinction in a prey–predator system: some new results

Ghosh

Kar

2013

J Biol Phys

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Sustainability of exploited ecologically interdependent species

2014

Self Cite

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This paper examines the application of maximum sustainable yield (MSY) policy in ecosystem and indicates when the ecosystem based fisheries management approach is required for conservation purpose. To describe the possible impacts of applying global MSY policy in an ecosystem, we have considered both specialist and generalist prey-predator models with different fishing efforts. It is found that harvesting both prey and predator species in specialist prey-predator systems, to achieve global maximum sustainable total yield (MSTY) under independent efforts, will cause the extinction of the predator species. In contrast, the global MSTY may exist in a generalist preypredator system. If global MSTY does not exist, then it is due to the extinction of predator species. Hence, the prey species never goes to extinction under independent efforts and this scenario is quite different from the one found under combined harvesting effort.

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Optimal Harvesting Policies Threaten Biodiversity in Mixed Fisheries

Tromeur

Doyen

2018

Environ Model Assess

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Maximum sustainable yield and species extinction in ecosystems

Cited by 74 publications

References 13 publications

Maximum sustainable yield and species extinction in a prey–predator system: some new results

Maximum sustainable yield and species extinction in a prey–predator system: some new results

Sustainability of exploited ecologically interdependent species

Optimal Harvesting Policies Threaten Biodiversity in Mixed Fisheries

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