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Published on: September 5, 2018
Is feedback control effective for ecosystem-based fisheries management?
Hiroyuki Matsuda1, Peter A Abrams
1Yokohama National University, Yokohama, Japan.
Journal of Theoretical Biology
|June 25, 2013
Summary
Feedback control of fishing effort can lead to predator extinction, even when prey populations are managed. Robust strategies are elusive due to ecosystem complexity and errors.
Area of Science:
- Ecology
- Fisheries Science
- Population Dynamics
Background:
- Species interactions significantly influence ecosystem stability and resource management.
- Feedback control mechanisms are employed in fisheries to manage harvesting and maintain prey populations.
Purpose of the Study:
- To investigate how species interactions affect the robustness of feedback control in prey harvesting.
- To analyze the consequences of feedback control on fishing effort and predator-prey dynamics.
Main Methods:
- Modeling ecosystem dynamics under different feedback control scenarios for fishing effort.
- Analyzing the impact of harvesting on predator and prey populations.
- Evaluating system stability and dynamic behaviors under controlled fishing pressure.
Main Results:
- Feedback control of fishing effort can result in predator extinction, irrespective of prey population control.
- Coexistence of fisheries and predators is challenging, often leading to complex dynamic behaviors.
- When coexistence occurs, systems may exhibit stable equilibria or complex cyclical patterns.
Conclusions:
- Effective and robust strategies for managing harvested prey are difficult to achieve due to ecosystem complexity and inherent errors.
- Predator-prey interactions introduce significant challenges to the stability of controlled fisheries.
- Further research is needed to develop resilient management approaches in complex ecological systems.
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