Trends of fish resources in the Tonle Sap basin ‐ their correlation with the hydrological conditions of the Mekong river

Sokhem Pech “Sustainable Water Policy Scenarios” Project, Researcher, Japan Science and Technology Agency, Takeda 4–3‐11, Kofu, Yamanashi, 400–8511, Japan E-mail: [email protected]@hatfieldgroup.com

Kengo Sunada Professor, Civil and Environmental Engineering Department, University of Yamanashi, Takeda 4–3‐11, Kofu, Yamanashi, 400–8511, Japan

Satoru Oishi Associate Professor, Civil and Environmental Engineering Department, University of Yamanashi, Takeda 4–3‐11, Kofu, Yamanashi, 400–8511, Japan

Naoki Miyazawa Research Associate, Civil and Environmental Engineering Department, University of Yamanashi, Takeda 4–3‐11, Kofu, Yamanashi, 400–8511, Japan

Daisuke Tanaka Engineer, Masaru Corporation, Saga 1–9‐14, Koto‐Ku, Tokyo, 135–8432, Japan

Abstract

By using a simple ecosystem model, the study grasps the relationship between the change in inundated areas (water level and flood extends) and the level of fish production in the Tonle Sap Basin (TSB). The model produces the fish production trends that can reflect the changes in key parameters such as flood extent and relative fish area density. The results show the continued dominance of the opportunist/white migratory species in the TSB's fish composition. It reconfirms the hydrological and biological linkages between the TSB and the Mekong River that require a cross‐sectoral and cross‐boundary integrated planning and development.

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Trends of fish resources in the Tonle Sap basin ‐ their correlation with the hydrological conditions of the Mekong river

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Trends of fish resources in the Tonle Sap basin ‐ their correlation with the hydrological conditions of the Mekong river

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