Flashcards in Mekong in Depth Deck (57)
Where is the Mekong?
South East Asia
Which counties does the Mekong flow through?
China, Myanmar, Thailand, Laos, Cambodia and Vietnam
Where has most of the development in the Mekong taken place?
The upstream section e.g China
Compared to other large rivers, how clean and natural is the Mekong?
Pristine, little pollution so far
What is the length of the Mekong?
What is the mean annual discharge of the Mekong?
14,800m cubed per second
What is the first 4000km of the river made up of?
Bed rock or thin alluvium above bed rock
Where is the large delta at the end of the Mekong?
What is the average seasonal change in river depth?
10m, can be as high as 20m in lower regions
What are deep river stages important for?
Fish migration and habitation
What features occupy the Mekong midway down its length?
Rock islands which can change and divert flow
Why does the river says ten constantly change?
There is large variations in water output from monsoons and Himalaya summer ice melts
What forms the 4000 Island stage of the Mekong?
Sediment load and bedrock formation
When is the peak of river volume?
Where is most of the Mekong discharge?
Far down the river, the catchment is much larger with more tributaries
What is the Tonle Sap?
A large seasonal lake which alters Mekong flow
Why is Tonle Sap different?
Has reversed flow in different parts of he year
What does flooding in the Tonle Sap create?
Diverse biological floodplain
When does the Tonle Sap flood?
May-October (wet season)
Where does most of the Mekong sediment end up?
Around the Tonle Sap catchment
What is the main Benidorm from the Mekong?
Large fish sticks due to nutrient heavy system
Where does most of the protein come from to the Cambodian diet?
How does the Mekong rate for fish stocks?
Most productive fishery in the world
What has the large food availability led to?
Huge human population boom
What has happened to amount of fish caught per fisherman?
Reduced due to more increased amount of fishermen, from 350-200kg
What is the weight of fish caught in the Mekong?
225000tons, gone up from 125000
What society was set up in 1957 to manage the Mekong river?
The Mekong Comittee
What replaced the Mekong Committee In 1995?
The Mekong River Commission
What was the aim of the Mekong River Commission?
"An economically prosperous, socially just and environmentally sound Mekong river basin"