Optimizing the management of cascades or systems of reservoirs at catchment level (MK3)

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    Creating wetlands within reservoirs
    (Report, 2012-07-12) Meynell, Peter-John; Hoanh, Chu Thai
    This field trip and feasibility study follows on from an initial concept paper for creating wetlands in reservoirs that have a large draw down. The guiding hypothesis is that such reservoirs often have relatively limited diversity of aquatic habitats and their productivity is limited by the rather barren shoreline areas in the drawdown. The idea of developing permanent wetlands within the drawdown area through the construction of small dykes below the Full Supply Level that would retain water as the water level falls and be recharged with water during the wet season filling of the reservoir. Such created wetlands would contribute to greater habitat diversity and allow areas for fish spawning and growth and hence increase the productivity of the reservoir. Such created wetlands could also be used as more conventional fishponds for enhancing livelihood opportunities.
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    Fish and Fisheries in the Sesan River Basin
    (Report, 2011-12) Baran, Eric; Saray, Samadee; Teoh, Shwu Jiau; Tran, Thanh Cong
    The present component of the project focussing on i) the Sesan Basin and ii) fisheries will: ‐ establish a fisheries baseline for the Sesan catchment, focussing on fish biodiversity, fish production, fisheries zoning, resource use and the fisheries sector; ‐ Identify ecological flows suitable for fish in the Sesan catchment (how much flow should be left for downstream fish production); ‐ contribute to the identification of a set of ecological sustainability principles which will guide multiple uses of water resources and riverine systems; ‐ assess the impacts of dam development on the fisheries sector (how much capture fish will be lost due to dam construction, how this loss can be mitigated, and how much fish can be produced from reservoirs).