Divers captured the spawning of soft corals on Moore Reef with researchers to analyse next generation
Annual coral spawning has begun on the outer Great Barrier Reef, with researchers set to analyse the next generation of corals.
Divers captured the spawning of soft corals on Moore Reef, 47km east of Cairns, on Thursday night.
Continue reading...Scientists stunned by unprecedented heat-stress event say they can only hope it ‘motivates and unites people’
Corals across several countries are bleaching and dying en masse from unprecedented levels of heat stress, prompting fears that an unfolding tragedy in Central America, North America and the Caribbean could become a global event.
US government scientists have confirmed reefs in Panama, Colombia, El Salvador, Costa Rica, Mexico and six countries in the Caribbean, including the Bahamas and Cuba, are suffering significant bleaching, alongside corals in Florida that began turning white almost a month ago.
Continue reading...Diving to 600m, researchers find reefs full of octopus, lobster and fish, raising hopes for corals’ survival amid rising sea temperatures
Scientists operating a submersible have discovered deep-sea coral reefs in pristine condition in a previously unexplored part of the Galápagos marine reserve.
Diving to depths of 600 metres (1,970ft), to the summit of a previously unmapped seamount in the central part of the archipelago, the scientists witnessed a breathtaking mix of deep marine life. This has raised hopes that healthy reefs can still thrive at a time when coral is in crisis due to record sea surface temperatures and ocean acidification. It also showed the effectiveness of conservation actions and effective management, they said.
Continue reading...Almost two-thirds of sharks and rays living on world’s coral reefs at risk, with 14 of 134 species reviewed critically endangered
Almost two-thirds of sharks and rays that live around the world’s coral reefs are threatened with extinction with potentially dire knock-on effects for ecosystems and coastal communities, according to new research.
Overfishing was the main cause of the declines over the past half a century, with larger sharks and rays being particularly hard hit.
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Continue reading...Every photograph of bleached corals a reminder we’re not doing enough to tackle climate crisis, conservationists say
Conservationists say they have have recorded evidence of coral bleaching under way at Ningaloo off Western Australia’s north-west coast.
It comes just as the Great Barrier Reef on the other side of the country undergoes another devastating mass bleaching event.
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Continue reading...Aerial surveys show almost no reefs across a 1,200km stretch escaping the heat, prompting scientists to call for urgent action on climate crisis
The Great Barrier Reef has been hit with a sixth mass coral bleaching event, the marine park’s authority has confirmed, with aerial surveys showing almost no reefs across a 1,200km stretch escaping the heat.
The Guardian understands a United Nations mission currently under way to check the health and management of the reef will be briefed on the initial findings of the surveys as early as Friday in Townsville.
Continue reading...Few corals are safe from warming oceans, a new study warns, but studies are finding surprisingly hardy corals, natural sunscreens and how coral ‘IVF’ can regrow reefs
In Puerto Viejo, scuba diving was once just for tourists, but a centre is training young people with few opportunities to care for the ocean on their doorstep
“I put fresh almond leaves in your underwater masks as anti-fogging – a way to avoid using chemicals. You can remove them once in the water, just before diving,” says Salim Vasquez, 14, pushing her dreadlocks away from her mask.
She distributes the equipment to her fellow divers, who are aged between 14 and 24, and Ana María Arenas, a group coordinator. It is 8am on a cloudy Sunday morning in Puerto Viejo, a Jamaican-inspired city in the south of Costa Rica. The young conservationists are preparing to dive into the Caribbean water for their weekly reef monitoring.
Continue reading...Vibrant soundscape shows Indonesian reef devastated by blast fishing is returning to health
From whoops to purrs, snaps to grunts, and foghorns to laughs, a cacophony of bizarre fish songs have shown that a coral reef in Indonesia has returned rapidly to health.
Many of the noises had never been recorded before and the fish making these calls remain mysterious, despite the use of underwater speakers to try to “talk” to some.
Continue reading...Portfolio selection rules on evaluating risk used to pick 50 reefs as ‘arks’ best able to survive climate crisis and revive coral elsewhere
A Nobel prize-winning economic theory used by investors is showing early signs of helping save threatened coral reefs, scientists say.
Researchers at Australia’s University of Queensland used modern portfolio theory (MPT), a mathematical framework developed by the economist Harry Markowitz in the 1950s to help risk-averse investors maximise returns, to identify the 50 reefs or coral sanctuaries around the world that are most likely to survive the climate crisis and be able to repopulate other reefs, if other threats are absent.
Continue reading...Scientists have carefully collected spawn bundles by moonlight in a bid to help save the reef
It’s nearing 10pm, and Dr Kate Quigley is still waiting. Using red lights to minimise disruption to the animals’ behaviour, she is inspecting corals.
Quigley, who studies reef restoration at the Australian Institute of Marine Science, is looking for “little red dots all over the surface”. A pimply appearance is a hallmark sign that a coral is about to spawn, releasing sperm and eggs in bundles resembling small bubbles.
Continue reading...Overfishing, a heating planet, pollution and habitat destruction have devastated reefs, scientists warn
The world’s coral reef cover has halved since the 1950s, ravaged by global heating, overfishing, pollution and habitat destruction, according to an analysis of thousands of reef surveys.
From the 1,430-mile (2,300km) Great Barrier Reef in Australia to the Saya de Malha Bank in the Indian Ocean, coral reefs and the diversity of fish species they support are in steep decline, a trend that is projected to continue as the planet continues to heat in the 21st century.
Continue reading...Researchers find ‘significant relationship’ between stony coral tissue loss disease and nearby shipping
A virulent and fast-moving coral disease that has swept through the Caribbean could be linked to waste or ballast water from ships, according to research.
The deadly infection, known as stony coral tissue loss disease (SCTLD), was first identified in Florida in 2014, and has since moved through the region, causing great concern among scientists.
Continue reading...Tian Xuejun rejects Australia’s ‘groundless accusations’ that China influenced the finding to score political points
The Chinese host of a United Nations world heritage committee has defended a proposal to label the Great Barrier Reef as “in danger”, and rejected Australian government suspicion that China influenced the finding for political reasons.
It came as the Morrison government sought to use a new report by Australia’s marine science agency to argue there had been widespread coral recovery on the reef.
Continue reading...Group of reef and climate scientists say world heritage warning merited and Australia has not ‘pulled its weight on emissions’
Five of the world’s leading reef and climate scientists have thanked Unesco for recommending the Great Barrier Reef be listed as world heritage “in danger”, saying it was the right decision in part because Australia had not “pulled its weight” in reducing emissions.
The group of scientists, including the Australian professors Ove Hoegh-Guldberg and Terry Hughes, wrote to the UN body on Thursday saying the recommendation to downgrade the 2,300-km reef system’s world heritage status was “the right decision”.
Continue reading...Descend through the different zones of the ocean to discover its mesmerising marine life, how human pollutants are interfering – and what we can still do about it
Continue reading...From the final verdict on George Pell to devastating Great Barrier Reef bleaching, here’s our roundup of important stories
As Australia’s coronavirus outbreak continues, a lot of important news has slipped under the radar.
Here are the most important stories you may have missed over the past week. From the statement of George Pell’s accuser to the worst coral bleaching the Great Barrier Reef has ever seen.
Continue reading...Exclusive: Mass bleaching seen along Great Barrier Reef could mark start of global-scale event, expert warns
Rising ocean temperatures could have pushed the world’s tropical coral reefs over a tipping point where they are hit by bleaching on a “near-annual” basis, according to the head of a US government agency program that monitors the globe’s coral reefs.
Dr Mark Eakin, coordinator of Coral Reef Watch at the National Oceanic and Atmospheric Administration, told Guardian Australia there was a risk that mass bleaching seen along the length of the Great Barrier Reef in 2020 could mark the start of another global-scale bleaching event.
Continue reading...Severity of damage has increased, with areas spared in previous years experiencing moderate or severe bleaching
The government agency responsible for the Great Barrier Reef has confirmed the natural landmark has suffered a third mass coral bleaching episode in five years, describing the damage as “very widespread”.
The Great Barrier Reef Marine Park Authority said the assessment was based on information from in-water and aerial observations, and built on the best available science and technology to understand current conditions.
Continue reading...Renowned scientist Terry Hughes says huge swathes of reef have been affected in a ‘severe’ situation
The Great Barrier Reef has experienced a third mass coral bleaching event in five years, according to the scientist carrying out aerial surveys over hundreds of individual reefs.
With three days of a nine-day survey to go, Prof Terry Hughes told Guardian Australia: “We know this is a mass bleaching event and it’s a severe one.”
Continue reading...