
Record frost in the United States have destroyed coral reefs in the usually warm waters off the Florida Keys archipelago.
In January and February in Miami, the thermometer regularly fell below 1.6 degrees Celsius, which has not been since 1970. According to employees of the University of Miami, because of the cold weather the temperature of water in south Florida fell below 15 degrees, and in such circumstances, corals can not develop.
A sudden cold snap has also led to "bleaching" of corals - they have lost their pigmentation and eventually died.
Scientists say that the destruction of coral has a negative impact on the sensitive tropical ecosystems of the region. For example, macroalgae, corals living in the body, forced to change the habitat due to lack of food resources. Most other species have suffered from cold-water corals mozgoviki and star-shaped corals, which may take several hundred years to grow in an underwater colony.
In addition, the cold had a negative impact on tropical animals. For example, cold-blooded iguana, for which the norm is 23-35 "overboard" degrees Celsius, are immobile, if the temperature drops below 15 degrees. And when it drops to 5 ° C or below, and blood flow in iguanas almost stops, the animal falls into suspended animation and falls from the trees, which often leads to death.