Yangtze River in China saw a stretch of it, turning red around the area of Chongquin city. While some are concerned, others are interested in knowing why the Chinese River turned red, looking like the color of a tomato sauce on Thursday September 06, 2012.
The Yangtze River is the longest river in Asia and the third longest river in the world. Inhabitants were seen collecting the red water in bottles to show off later while others were recording the event in their mobile phone cameras.
Emily Stanley, the scientist who studies limnology, the study of inland waters, at the University of Wisconsin, put the cause to microorganisms for turning the color of the river red. She said that it is not necessarily red tide because the algae that causes red-tide is a marine(sea) group and not a freshwater group.
Emily Stanley added that there are other microorganisms that can turn freshwater like lakes and rivers red due to inadequate supply of oxygen. She said that industrial pollutants can also be the reason for Yangtze to turn red.
In December 2011, the Jian River had turned red after two garment factories had dumped tons of red dye into the river. The government had investigated the issue and shut down operations of those two companies. Emily Stanley also said the silt or clay from an upstream river can also be possible cause of the Chinese River turning red.