What is coral bleaching? - NOAA's National Ocean Service
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 …
Everything You Need to Know about Coral Bleaching—And …
Coral bleaching impacts peoples’ livelihoods, food security, and safety. Coral reefs are natural barriers that absorb the force of waves and storm surges, keeping coastal communities safe. Without them, we must rely on manmade seawalls that are expensive, less effective, and environmentally damaging to construct.
Over a year of astonishing ocean heat has given way to the largest ...
1 天前 · The NOAA coral reef authority declared the global bleaching event in April 2024, making it the fourth of its kind since 1998. The previous record from the 2014 to 2017 mass bleaching affected just ...
NOAA confirms 4th global coral bleaching event
2024年4月15日 · NOAA Coral Reef Watch's global 5km-resolution satellite Coral Bleaching Alert Area Maximum map, for January 1, 2023 to April 10, 2024. This figure shows the regions, around the globe, that experienced high levels of marine heat stress (Bleaching Alert Levels 2-5) that can cause reef-wide coral bleaching and mortality. (Image credit: NOAA)
Coral bleaching | Definition, Causes, Consequences, & Facts
1 天前 · Coral bleaching, whitening of coral resulting from loss of symbiotic algae or degradation of the algae’s photosynthetic pigment. Bleaching is associated with the devastation of coral reefs, which are home to approximately 25 percent of all marine species.
The world’s corals are bleaching. Here’s why and what it ... - UNEP
2024年6月6日 · Like a wildfire moving through brush, the ocean heat wave has ravaged corals. Scientists recorded bleaching in 53 countries from February 2023 to April 2024, according to the United States' National Oceanic and Atmospheric Administration and the International Coral Reef Initiative, which is supported by UNEP.
A global coral-bleaching database, 1980–2020 | Scientific Data
2022年1月20日 · The GCBD provides vital information on the presence or absence of coral bleaching along with site exposure, distance to land, mean turbidity, cyclone frequency, and a suite of sea-surface ...
Global coral bleaching event expands, now the largest on record
2 天之前 · The NOAA coral reef authority declared the global bleaching event in April 2024, making it the fourth of its kind since 1998. The previous record from the 2014 to 2017 mass bleaching affected just ...
NOAA Coral Reef Watch Research - National Oceanic and …
2024年8月20日 · Bleaching-level heat stress, as remotely monitored and predicted by NOAA Coral Reef Watch (CRW), has been -- and continues to be -- extensive across the Atlantic, Pacific and Indian Ocean basins. Since January 1, 2023, mass coral bleaching has been confirmed on reefs in at least 70 countries and territories around the world.
NOAA Confirms Fourth Global Coral Bleaching Event
2024年4月26日 · The world is currently experiencing a global coral bleaching event, according to NOAA scientists. This is the fourth global event on record and the second in the last 10 years. Bleaching-level heat stress, as remotely monitored and predicted by NOAA’s Coral Reef Watch (CRW), has been—and continues to be—extensive across the Atlantic ...