Bioeconomic Impact of Nutrient Pollution in Freshwater Fisheries: The Case of Yellow Perch in the St. Lawrence River, Quebec, Canada

Michelan Wilson (), Edward Barbier () and Marc Mingelbier ()
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Michelan Wilson: Colorado College
Edward Barbier: Colorado State University
Marc Mingelbier: Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs

Eastern Economic Journal, 2025, vol. 51, issue 4, No 3, 583-626

Abstract: Abstract This paper develops a bioeconomic model to analyze the impact of nutrient concentration on a freshwater fishery in Lac Saint-Pierre. It considers both direct and indirect effects of nutrients on fish stock through submerged aquatic vegetation. Findings suggest that nutrient reduction policies should consider nitrogen-phosphorus ratios as a limiting factor in fish production. Numerical simulations show potential profit gains from nitrogen-phosphorus reduction of up to 24.5% for Lac Saint-Pierre. The study emphasizes the importance of holistic environmental policies that account for complex interactions between nutrients, fish stock, and habitat quality to sustainably manage freshwater ecosystems and mitigate ecological disturbances caused by nutrient pollution.

Keywords: Fishery; Nutrient pollution; Submerged aquatic vegetation; St. Lawrence River; Q51; Q57; Q58 (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1057/s41302-025-00306-8

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