Thursday, October 25, 2018

Balicasag Island, Philippines.

9.5161° N, 123.6833° E













Ideas without precedent are generally looked upon with disfavour.
and men are shocked if their conceptions of an orderly world are challenged.
Bretz, J Harlen 1928.


We have always been led to believe that bleaching of the world's coral reefs is final proof of global warming. Not quite according to the NOAA:

When corals are stressed by changes in conditions such as temperature, light, or nutrients, they expel the symbiotic algae living in their tissues, causing them to turn completely white.

Warmer water temperatures can result in coral bleaching. When water is too warm, corals will expel the algae (zooxanthellae) living in their tissues causing the coral to turn completely white. This is called coral bleaching. When a coral bleaches, it is not dead. Corals can survive a bleaching event, but they are under more stress and are subject to mortality.

In 2005, the U.S. lost half of its coral reefs in the Caribbean in one year due to a massive bleaching event. The warm waters centered around the northern Antilles near the Virgin Islands and Puerto Rico expanded southward. Comparison of satellite data from the previous 20 years confirmed that thermal stress from the 2005 event was greater than the previous 20 years combined.

Not all bleaching events are due to warm water.

In January 2010, cold water temperatures in the Florida Keys caused a coral bleaching event that resulted in some coral death. Water temperatures dropped 12.06 degrees Fahrenheit lower than the typical temperatures observed at this time of year. Researchers will evaluate if this cold-stress event will make corals more susceptible to disease in the same way that warmer waters impact corals.

The Great Barrier Reef at 18.2871° S is hitting the news with much bleaching. 


Tioman Island vs The Great Barrier Reef!


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