An exploration of ecosystem-based approaches for the management of Red Sea fisheries
Tesfamichael, D. (2016). An exploration of ecosystem-based approaches for the management of Red Sea fisheries, in: Tesfamichael, D. et al. The Red Sea ecosystem and fisheries. Coral Reefs of the World, 7: pp. 111-134. http://dx.doi.org/10.1007/978-94-017-7435-2_9
In: Tesfamichael, D.; Pauly, D. (Ed.) (2016). The Red Sea ecosystem and fisheries. Coral Reefs of the World, 7. Springer Science+Business Media: Dordrecht. ISBN 978-94-017-7433-8. xiii, 203 pp. https://dx.doi.org/10.1007/978-94-017-7435-2, meer
In: Coral Reefs of the World. Springer: Dordrecht. ISSN 2213-719X, meer
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| Author keywords |
Ecosystem based management; Ecosystem modeling; Ecopath with Ecosim; Trophic interactions; Time series fitting |
| Abstract |
The Ecopath with Ecosim (EwE) modelling tool was used to simulate trophic interactions in the Red Sea ecosystem, with emphasis on its fisheries. Time-dynamic simulations were run to quantify the impact of fisheries, which represent the main anthropogenic impact on the ecosystem. The model was fitted to a time series of observed catch and effort data to improve its ability to mimic changes in the Red Sea ecosystem. EwE was also used to predict the consequences of different fishing scenarios: maintaining the status quo, banning all fishing, and projecting into the future at the present growth rate of the fisheries. Monte Carlo simulations were used to examine the sensitivity of the predictions to changes in model input parameters and the risk of fish abundance falling below selected thresholds. Equilibrium surplus-yield analyses were carried out on the major groups affected by the fishery. Finally, the model was used to examine the conflict between artisanal and industrial fisheries in the Red Sea by running scenarios where the fishing effort of each of these sectors was doubled. |
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