Incorporating economics into fishery policies: Developing integrated ecological-economics harvest control rules

Rosa, Renato; Costa, Tiago; Mota, Rui

doi:10.1016/j.ecolecon.2022.107418

Cited by 5 publications

(1 citation statement)

References 42 publications

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“…Modern bioeconomic fishery received global attention as it can give insights into how to deal with the multi-difficulties of fisheries [12,58] and prescribe suitable protective measures that could be ecologically and economically viable [67]. However, it is shown that a conflict exists between conservation policy and socio-economic objectives [19].…”

Section: Introductionmentioning

confidence: 99%

Dynamic behaviour of a single-species nonlinear fishery model with infection: the role of fishing tax and time-dependent market price

Sarkar,

Bhattacharya,

Bairagi

2023

J. Nonlinear Sci. Appl.

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Taxation policy for fishing received global consent to protect fisheries from drastic harvesting. Still, it should be applied sustainably for a greater ecological and economic benefit because over-taxation may impair fishers' earnings and reduce the overall societal revenue. The fish disease may alter the system dynamics and reduce the revenue generation from the fishery. This paper proposes a nonlinear bioeconomic harvesting model of a single-species fishery with infection, variable market price, and nonlinear demand to explore taxation's ecological and economic effects. We provide the stability results of the system's different ecological and economic equilibrium points. The analytical conditions for the existence of transcritical bifurcation are also established. The computational results show that the system exhibits three dynamical regimes depending on the fishing tax. Taxation might control intensive harvesting but augment disease spreading and price hiking. Higher regulatory tax may even cause a regime shift, where the system enters into a non-harvesting regime from the harvesting one, causing an ecological and economic imbalance. Using Pontryagin's maximum principle, we decipher that some optimal fishing tax exists for the maximum societal benefit in a disease-induced fishery.

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Section: Introductionmentioning

confidence: 99%

Dynamic behaviour of a single-species nonlinear fishery model with infection: the role of fishing tax and time-dependent market price

Sarkar,

Bhattacharya,

Bairagi

2023

J. Nonlinear Sci. Appl.

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Habitat considerations in optimal fisheries recovery

Mota,

Nichols

2023

Ecological Economics

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Identifying limit reference points for robust harvest control rules in fisheries management

Da-Rocha,

García-Cutrín,

Gutiérrez

2024

Front. Mar. Sci.

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Risk and uncertainty are intrinsic characteristics of natural resources that must be taken into account in their management. Harvest control rules (HCR) used to be the central management tool to control stock fisheries in an uncertain context. A typical HCR determines fishing mortality as a linear relationship of the biomass binding only when the biomass is above a critical risk value. Choosing the linear relationship and the risk value is a complex task when there is uncertainty because it requires a high level of data and an in-deep knowledge of the stock. This paper fully characterizes robust HCRs that explicitly include scientific uncertainty using the robust control theory approach. Our theoretical findings show that under uncertainty: i) Constant HCRs are not robust; ii) Robust HCRs show a steeper linear relationship between fishing mortality and biomass and a higher value of biomass to be consider at risk than non-robust HCRs. From the implementation viewpoint, we assume a three-sigma rule and show that robustness is achieved by selecting a fishing mortality such that its deviation from the fishing mortality target is twice the deviation of the biomass from the biomass target, and the critical value of the biomass (the point below which fishing should cease, or become as close to zero as possible) is half of the biomass associated with the maximum sustainable yield when this is the target.

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Incorporating economics into fishery policies: Developing integrated ecological-economics harvest control rules

Cited by 5 publications

References 42 publications

Dynamic behaviour of a single-species nonlinear fishery model with infection: the role of fishing tax and time-dependent market price

Dynamic behaviour of a single-species nonlinear fishery model with infection: the role of fishing tax and time-dependent market price

Habitat considerations in optimal fisheries recovery

Identifying limit reference points for robust harvest control rules in fisheries management

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