How is red tide formed?

Red tide is a natural disaster, which is a phenomenon of discoloration of the water caused by a large number of explosive reproduction or high aggregation of certain tiny plankton in the sea, and it has many colors, including red, green and brown. The mechanism of red tide formation is very complex, which is the result of a combination of biological, meteorological, hydrological and other factors.

With the development of urbanization and agriculture, many industrial and agricultural wastewater and domestic sewage are discharged into the ocean with a large amount of organic matter and rich nutrients, these substances lead to eutrophication of the water body, pollutants are difficult to be diluted and diffused, resulting in the formation of red tide. In addition, many areas with high density of mariculture, because of its own pollution, there will also be eutrophication of water bodies, may also form red tide.

In addition, there are more than 330 kinds of plankton that can form red tide in the ocean, and there are about 150 kinds of plankton in our coastal waters.

The reason for the formation of red tide is also related to water temperature and salinity, different sea areas and different types of red tide, its outbreak of water temperature and salinity requirements are different, in general, the sudden increase in surface water temperature and salinity suddenly lower, will lead to the occurrence of red tide. If it is some more closed bays, whose water exchange is weak, then usually red tide will appear after the rain.

In addition to these causes of red tide formation, red tide can also be formed by suitable ocean currents and weather conditions. Red tide can damage the ecological balance of the ocean and is a type of natural disaster. You can also learn more about the mystery of oceanic red tide.