Freshwater - 4.3, 4.4 - IDBM & Wetlands

Which river is this?

(a)  

What does 'IDBM' stand for?

• Integrated Drainage Basin Management

• Internal Drain Bleaching Mechanism

• International Drainage Basin Movement

• International Dam Building Management

What is the MRC?

• Mekong River Confluence

• Mekong River Commission

• Mekong River Company

• My Romantic Comedy

Which nations are a part of the Mekong River Commission?

• Vietnam, Cambodia, Laos

• Vietnam, Cambodia, Laos, Myanmar, Thailand

• Vietnam, Cambodia, China

• China and Laos

Why does the Mekong River Commission exist?

• To develop a co-operation between multiple nations and their F-E-W needs

• To control the flow of water

• To actively manage each nation's water demands

• To forge a retaliatory stance on dam building

What is the Laos government doing on the Mekong?

(a)  

Why is the Laos government building dams on the Mekong?

• To interfere with the migratory patterns of the riverine fish species.

• To generate hydro-electric energy and to export the excess.

• To control the flow of water downstream and hold power over the Cambodian and Vietnamese people

• To cooperate with the Chinese government and help in their building abundant energy in the region.

What is the impact of dam building on river sediment?

• It slows the rivers flow rate

• There is a build-up of sediment up stream, behind dams.

• It adds sediment to the river system

• It removes sediment from the river

What are the effects of sediment build up behind dams on a river's lower course?

• A loss of nutrient rich sediment starves the river's wildlife reducing biodiversity.

• A reduction in sediment transport and the eventual erosion of lower course landforms like levees and deltas.

• A growth in a delta formation as more sediment reaches that part of the river.

• Floods

How could this impact a Wetland Ecosystem like the Mekong Delta?

• An increase in flow rate and sediment could see a wetland ecosystem flourish

• An increase in wildlife

• A loss in flow rate and sediment could see a wetland ecosystem disappear

• A decrease in wildlife