Aerial maps reveal how huge swathes of Hawaii's reefs were bleached in 2019 marine heatwave
2 years, 7 months ago

Aerial maps reveal how huge swathes of Hawaii's reefs were bleached in 2019 marine heatwave

Daily Mail  

In 2019, a marine heatwave hit the Hawaiian Islands, causing a huge expanse of unusually warm water to build up in the area. The maps reveal how reefs near heavily developed coasts were more susceptible to bleaching during the marine heatwave. 'Repeat coral mapping with the GAO revealed how Hawaii's coral reefs responded to the 2019 mass bleaching event,' said Greg Asner, lead author of the study. The maps reveal more than 10 potential habitats that may offer a safe haven for corals – called 'coral refugia' Previous studies have shown that when water is too warm, corals expel the algae living in their tissues and turn completely white – a process known as coral bleaching In contrast, the maps showed that coral mortality was highest along highly developed coasts. 'This study supports Hawaii's Holomua Marine 30x30 Initiative by not only identifying areas impacted by ocean heat waves, but also areas of refugia,' said Mr Neilson.

Heatwave Water Coral Reefs Marine Areas Hawaii Maps Reveal Coral Reefs Gao Corals Coral Mortality  heatwave  bleached  reveal  coral  marine  hawaiis  aerial  areas  water  huge  reefs  corals  swathes  maps

History of this topic

Parts of Great Barrier Reef record highest coral deaths due to heat, storms
1 month ago

Parts of Great Barrier Reef record highest coral deaths due to heat, storms

Al Jazeera  

Up to 72 percent of coral found dead on 12 of 19 surveyed reefs in the north of the world’s largest living structure. Recent mass bleaching, two cyclones and flooding have left parts of the Great Barrier Reef with “significant coral mortality”, according to new data from the Australian Institute of Marine Science. In one northern section of the reef, …

Over 60% of world's coral reefs likely bleached in just the past year
7 months, 1 week ago

Over 60% of world's coral reefs likely bleached in just the past year

India Today  

In a dire warning about the escalating threat to the world's coral reefs, the US-based National Oceanic and Atmospheric Administration has revealed that nearly two-thirds of these vital marine ecosystems have experienced heat stress severe enough to trigger bleaching over the past year. "I am very worried about the state of the world's coral reefs," said Derek Manzello, coordinator of …

Experts say coral reef bleaching near record level globally because of ‘crazy’ ocean heat
7 months, 1 week ago

Experts say coral reef bleaching near record level globally because of ‘crazy’ ocean heat

Associated Press  

Ocean temperatures that have gone “crazy haywire” hot, especially in the Atlantic, are close to making the current global coral bleaching event the worst in history. That’s nearing the record of 65.7% in 2017, when from 2009 to 2017 about one-seventh of the world’s coral died, said Derek Manzello, coordinator of the National Oceanic and Atmospheric Administration Coral Reef Watch …

Lakshadweep in ecological crisis: Researchers find widespread bleaching of coral reefs due to marine heatwaves
7 months, 2 weeks ago

Lakshadweep in ecological crisis: Researchers find widespread bleaching of coral reefs due to marine heatwaves

India TV News  

Kochi: In a disturbing development, researchers have found that marine heatwaves are causing widespread bleaching of coral reefs in the Lakshadweep Sea, causing them to lose their colours due to stress, according to a study by the ICAR-Central Marine Fisheries Research Institute. According to the National Oceanic and Atmospheric Administration, this level of Degree Heating Week poses a substantial risk …

Widespread coral bleaching recorded in Lakshadweep Sea: CMFRI report
7 months, 2 weeks ago

Widespread coral bleaching recorded in Lakshadweep Sea: CMFRI report

Hindustan Times  

Owing to heatwaves this year, widespread bleaching event is being recorded in the Lakshadweep Sea, the ICAR-Central Marine Fisheries Research Institute said in a statement on Monday. “Marine heatwaves are rare extreme weather events that involve prolonged periods of abnormally high ocean temperatures. “The primary cause of these marine heatwaves are excessive heat atmospheric transfer coupled with shifts in ocean …

All is not well in Lakshadweep. Why the island could be in big trouble
7 months, 2 weeks ago

All is not well in Lakshadweep. Why the island could be in big trouble

India Today  

Lakshadweep renowned for its pristine atolls, breathtaking reefs, and idyllic inhabited islands is currently grappling with an unprecedented crisis as widespread coral bleaching has been recorded due to marine heatwaves. Marine heatwaves are extreme weather events that involve prolonged periods of abnormally high ocean temperatures, often exceeding the 90th percentile of typical regional ocean temperatures based on historical data. The …

Global coral bleaching event called by US climate agency for the fourth time in history after year of extreme ocean heat
8 months, 1 week ago

Global coral bleaching event called by US climate agency for the fourth time in history after year of extreme ocean heat

ABC  

The Ribbon Reef, on the northern side of the Great Barrier Reef, before coral bleaching occurred. Short window, massive change From above, aerial surveys of the Great Barrier Reef revealed a "mass coral bleaching event" was unfolding across the world-heritage site. This photo of Ribbon Reef, on the northern side of the Great Barrier Reef, was taken before coral bleaching …

Scientists say coral reefs around the world are experiencing mass bleaching in warming oceans
8 months, 1 week ago

Scientists say coral reefs around the world are experiencing mass bleaching in warming oceans

Associated Press  

Coral reefs around the world are experiencing global bleaching for the fourth time, top reef scientists declared Monday, a result of warming ocean waters amid human-caused climate change. Coral reef bleaching across at least 53 countries, territories or local economies has been confirmed from February 2023 to now, scientists from the National Oceanic and Atmospheric Administration and International Coral Reef …

Coral reefs undergoing fourth global bleaching event, say US scientists
8 months, 1 week ago

Coral reefs undergoing fourth global bleaching event, say US scientists

India Today  

Many of the world's colourful coral reefs along coastlines from Australia to Kenya to Mexico have turned white in what scientists said is the fourth global bleaching event in the last three decades. Since the last mass global bleaching event in 2016, ocean temperatures have risen so much that NOAA had to introduce three new heat alert levels. Ongoing episodes …

Coral bleaching: Ocean heat is driving a mass bleaching event, and it could be the worst on record
8 months, 1 week ago

Coral bleaching: Ocean heat is driving a mass bleaching event, and it could be the worst on record

CNN  

CNN — Coral reefs around the world are experiencing a mass bleaching event as the climate crisis drives record-breaking ocean heat, two scientific bodies announced Monday — with some experts warning this could become the worst bleaching period in recorded history. NOAA predicts La Niña, El Niño’s cooler counterpart, could arrive between June and August this year, which provides “a …

Coral reefs around the world experiencing mass bleaching, scientists say
8 months, 1 week ago

Coral reefs around the world experiencing mass bleaching, scientists say

Al Jazeera  

Scientists warn that many of the world’s reefs may not recover from the intense, prolonged heat stress. Along coastlines from Australia to Kenya to Mexico, many of the world’s colourful coral reefs have turned a ghostly white in what scientists say has amounted to the fourth global bleaching event in the last three decades. At least 54 countries and territories …

Scientists detect coral bleaching in Great Barrier Reef's far north
9 months, 1 week ago

Scientists detect coral bleaching in Great Barrier Reef's far north

Hindustan Times  

Australian researchers have found coral bleaching around six islands in the far northern parts of the Great Barrier Reef, after a government agency said last week a major bleaching event was unfolding across the world's most extensive reef ecosystem. Great Barrier Reef Scientists at the James Cook University said on Friday they found only a few relatively healthy areas, mostly …

NOAA extends coral reef alert scale after extreme coral heat stress
10 months, 2 weeks ago

NOAA extends coral reef alert scale after extreme coral heat stress

CNN  

CNN — With water temperatures climbing to unprecedented heights, the National Oceanic and Atmospheric Administration has added new levels to its alert system to account for increasingly severe coral bleaching and higher mortality rates. Alert Level 5, the new highest level classified as “near complete mortality,” means “greater than 80 percent of corals in the highlighted area are at risk …

Cuban scientists hunt for clues to save coral reefs as ocean temperatures soar
1 year, 3 months ago

Cuban scientists hunt for clues to save coral reefs as ocean temperatures soar

The Hindu  

Cuban marine biologist Ariandy Gonzalez emerges uneasy from the sun-speckled Caribbean sea off a remote stretch of Cuba's south coast. The ongoing "Bojeo a Cuba" study is a snapshot in time of the health of Cuba's reef, fish and sea life, the first of its kind across such a large area of the island's waters, said Dr. Fabian Pina, a …

Sea temperatures lead to unprecedented, dangerous bleaching of Florida's coral reef, experts say
1 year, 4 months ago

Sea temperatures lead to unprecedented, dangerous bleaching of Florida's coral reef, experts say

The Independent  

For free real time breaking news alerts sent straight to your inbox sign up to our breaking news emails Sign up to our free breaking news emails Please enter a valid email address Please enter a valid email address SIGN UP I would like to be emailed about offers, events and updates from The Independent. Please try again later {{ …

Scientists say Florida Keys coral reefs are already bleaching as water temperatures hit record highs
1 year, 5 months ago

Scientists say Florida Keys coral reefs are already bleaching as water temperatures hit record highs

Associated Press  

FORT LAUDERDALE, Fla. — Some Florida Keys coral reefs are losing their color weeks earlier than normal this summer because of record-high water temperatures, meaning they are under stress and their health is potentially endangered, federal scientists said. Surface temperatures around the Keys have been averaging about 91 degrees, well above the normal mid-July average of 85 degrees, said Jacqueline …

It's so hot, heatwaves are underwater
1 year, 5 months ago

It's so hot, heatwaves are underwater

BBC  

There's a heatwave in the sea and scientists are worried European Union/Copernicus Sentinel-2 Sea temperatures around Florida have exceeded the normal range by more than 2C in July, leading to coral bleaching Could warmer ocean temperatures be a sign climate change has progressed further than we thought? European Union/Copernicus The northern Atlantic Ocean and Mediterranean Sea have experienced record-breaking sea …

Florida coral reefs risk ‘nasty bleaching’ as temperatures reach 90F: ‘We’re in unchartered territories’
1 year, 5 months ago

Florida coral reefs risk ‘nasty bleaching’ as temperatures reach 90F: ‘We’re in unchartered territories’

The Independent  

Sign up to the Independent Climate email for the latest advice on saving the planet Get our free Climate email Get our free Climate email SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy policy Florida coral reefs are facing an unprecedented threat from a sudden marine heat wave that …

To restore reefs dying in warming seas, UAE turns to coral nurseries
1 year, 6 months ago

To restore reefs dying in warming seas, UAE turns to coral nurseries

The Independent  

For free real time breaking news alerts sent straight to your inbox sign up to our breaking news emails Sign up to our free breaking news emails Sign up to our free breaking news emails SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy policy On a boat off the …

Great Barrier Reef suffers widespread coral bleaching
2 years, 9 months ago

Great Barrier Reef suffers widespread coral bleaching

The Hindu  

Australia’s Great Barrier Reef is suffering widespread and severe coral bleaching due to high ocean temperatures two years after a mass bleaching event, a government agency said on Friday. The report by the Great Barrier Reef Marine Authority, which manages the world’s largest coral reef ecosystem, comes three days before a United Nations delegation is due to assess whether the …

Great Barrier Reef suffers widespread coral bleaching
2 years, 9 months ago

Great Barrier Reef suffers widespread coral bleaching

The Independent  

Sign up to the Independent Climate email for the latest advice on saving the planet Get our free Climate email Get our free Climate email SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy policy Australia’s Great Barrier Reef is suffering widespread and severe coral bleaching due to high ocean …

The Planet Lost 14% Of Coral Reefs In 10-Year Period, Startling Report Finds
3 years, 2 months ago

The Planet Lost 14% Of Coral Reefs In 10-Year Period, Startling Report Finds

Huff Post  

LOADING ERROR LOADING The planet lost about 14% of its coral reefs between 2009 and 2018, a startling figure that reflects the dire threats to the iconic creatures as climate change continues to ravage sensitive ecosystems around the globe. A new report, released Monday by the Global Coral Reef Monitoring Network, found mass coral bleaching events linked to warmer temperatures …

Corals Can Still Bounce Back from Bleaching Even During Heatwaves if Humans Don't Interfere: Study
4 years ago

Corals Can Still Bounce Back from Bleaching Even During Heatwaves if Humans Don't Interfere: Study

News 18  

Some corals can recover from bleaching even in long heatwaves as long as humans don’t interfere, scientists said Tuesday, raising hopes for the endangered underwater ecosystems essential to much marine life. “We found that corals were only able to recover from bleaching while at elevated temperatures if they were not also exposed to other strong local stressors,” Baum said. Recent …

Global heating kills half the corals on the Great Barrier Reef
4 years, 2 months ago

Global heating kills half the corals on the Great Barrier Reef

Al Jazeera  

New research finds corals on vast Australian reef increasingly unable to recover from heat-caused bleaching. Half the corals on Australia’s Great Barrier Reef have died over the past 25 years, scientists said Wednesday, warning that climate change is irreversibly destroying the World Heritage-listed underwater ecosystem. “They’re typically depleted by 80 or 90 percent compared to 25 years ago,” report co-author …

Discover Related