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...Billions of these tiny plastic pellets are floating in the ocean, causing as much damage as oil spills, yet they are still not classified as hazardous
When the X-Press Pearl container ship caught fire and sank in the Indian Ocean in May, Sri Lanka was terrified that the vessel’s 350 tonnes of heavy fuel oil would spill into the ocean, causing an environmental disaster for the country’s pristine coral reefs and fishing industry.
Classified by the UN as Sri Lanka’s “worst maritime disaster”, the biggest impact was not caused by the heavy fuel oil. Nor was it the hazardous chemicals on board, which included nitric acid, caustic soda and methanol. The most “significant” harm, according to the UN, came from the spillage of 87 containers full of lentil-sized plastic pellets: nurdles.
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...The farmers, mostly women, once grew enough but must now buy imported rice as the climate crisis edges them into poverty
In the sweltering heat of the late-morning west African sun, Aminata Jamba slashes at golden rice stalks with a sickle. “The rice is lovely,” she says, music playing in the background as her son, Sampa, silently harvests the grain. But even if the quality is high, the quantity is not.
While once Jamba could have expected to harvest enough rice to last the whole year, this year she reckons it will last three to four months. After that, she will have to look elsewhere for a way to feed her family and make enough money to live.
Continue reading...As well as floods, sewage and crocodiles, those living in Banjul’s slums face the effects of a climate crisis they did little to cause
Yedel Bah would move home if she could, but she can’t. With no income of her own, four children to feed and a husband who just about manages, her family lives from day to day, and from flood to flood, on the banks of a litter-strewn, stagnant canal.
Every rainy season, the neighbourhood of Tobacco Road in the Gambian capital, Banjul, braces for downpours of such intensity that the canal overflows, spilling its murky, pungent depths into the slum-like homes that run alongside it.
Continue reading...Faced with extreme weather, voters in the 1970s responded to a government call to move to drier land. The same spirit of innovation is needed today
What should governments – and people – do, confronted by the terrifying force of nature? It is the question of our age. But one answer, found on mainland Europe, serves as a reminder of human ingenuity in the face of adversity. The Netherlands offers perhaps the most astonishing example of government intervention in the 20th century: acting to deal with North Sea surges, which not only cost lives but threatened food production. The project involved the damming of the Zuiderzee – a large, shallow North Sea inlet – and the reclamation of land in the newly enclosed water. What has been created since 1972 is a new region to the east of Amsterdam, called Flevoland, out of the sea in the form of two great polders – essentially flat fields of reclaimed marshland which together are about the size of the English county of Dorset.
These days Flevoland is a busy place: containing the country’s fastest growing city of Almere, the regional capital of Lelystad, and a vast nature reserve, Oostvaardersplassen. Half a century ago, all were submerged metres below sea level. The country’s youngest province is living proof of how humankind can live with the ever-changing elements. Michel van Hulten, one of Flevoland’s architects and a former Dutch minister, says some of the success of the area is down to the collectivist spirit of the early 1970s when voters instinctively trusted government. He points out that there were no tax incentives or state subsidies for people to move to what were then empty new towns. The public simply answered the government’s call as part of a national mission. The Low Countries remain ideologically and historically close to the UK. The problem is that today’s politics is marked by polarisation rather than solidarity.
Continue reading...The number of nesting sites on the archipelago has risen dramatically, but global heating sees male population plummet
It’s nearly midnight as Delvis Semedo strolls along an empty beach on the Cape Verdean island of Maio. Overhead, the dense Milky Way pierces the darkness. A sea turtle emerges from the crashing waves and lumbers up the shore. Then another. And another.
Semedo is one of about 100 local people who patrol Maio’s beaches each night during nesting season to collect data on the turtles and protect them from poachers. This year has been busier than usual. Sea turtle nests on the islands of Sal, Maio and Boa Vista – the primary nesting grounds for loggerheads in Cape Verde – have soared in the last five years. Cape Verde’s environment ministry puts nest numbers in 2020 across all 10 islands at almost 200,000, up from 10,725 in 2015.
Continue reading...Researchers estimate 1m sq km of seascape globally has been modified by coastal structures which bring in invasive species and damage habitat
Artificial structures have replaced more than half of the coastline of 30 cities around the world, according to new research suggesting coastal infrastructure will have a significant ecological impact if not well managed.
“Coastal hardening” – replacing natural coastal habitats with seawalls, breakwalls, wharves and other structures – is “consistently extensive” across cities in North America, the UK, Australia and New Zealand, finds a study published on Friday.
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Continue reading...ICJ ruling aggravates fractious relations between two countries and threatens to destabilise restive region
Kenya’s president, Uhuru Kenyatta, has rejected a decision by the UN’s highest court to grant Somalia control of disputed waters in the Indian Ocean, saying it would “strain relations” between the neighbouring countries.
The president accused the international court of justice of imposing its authority on a dispute “it had neither jurisdiction nor competence” to oversee after it delineated a new boundary that gives Somalia territorial rights over a large portion of the ocean, which is thought to be rich in oil and gas reserves. According to the new maritime border, Somalia has gained several offshore oil exploration blocks previously claimed by Kenya.
Continue reading...‘Shark calling’, an ancient custom of hunters singing to sharks then catching them by hand, is under threat and locals blame deep-sea disturbances
More in this series
• Race to the bottom: the disastrous, blindfolded rush to mine the deep sea
• ‘False choice’ – is deep sea mining required for an electric vehicle revolution?
• Covid tests and superbug killers: how the deep sea is key to fighting pandemics
To catch a shark in the waters off Papua New Guinea, first the men sing.
They sing the names of their ancestors and their respects to the shark. They shake a coconut rattle into the sea, luring the animals from the deep, and then catch them by hand.
Continue reading...Discovery made by a local girl comes decades after the bottle was put into the sea by schoolchildren as part of an experiment to monitor ocean currents
A glass bottle that was released into the sea 37 years ago by high school students in Japan has been found on the island of Hawaii, about 6,000km away.
Students of the natural science club at Choshi High School in the eastern prefecture of Chiba released the bottle in 1984 as part of a project to investigate ocean currents, Japanese newspaper Mainichi reported.
Continue reading...The space cemetery, named for the fictional captain in 20,000 Leagues Under the Sea, is where the International Space Station is likely to end up
At the furthest point from any landmass on earth, and 4km under the sea, lies the space cemetery.
When their outer space journeys come to an end, old satellites, rocket parts and space stations are sent to this desolate spot in the Pacific Ocean to rest on the dark seabed forever.
Continue reading...Officials in Turkish-occupied northern Cyprus say 20,000 tonnes of oil is approaching its coastline
Turkish Cypriot authorities have taken emergency action to stop an oil slick blamed on a faulty power plant in Syria from wreaking environmental havoc along some of the island’s finest unspoilt coastline.
Officials in the war-partitioned country’s breakaway north erected what local media described as a 400 metre barrier off the Karpas peninsula to prevent the slick reaching its pristine shores.
Continue reading...Trillions of metallic nodules on the sea floor could help stop global heating, but mining them may damage ocean ecology
In a display cabinet in the recently opened Our Broken Planet exhibition in London’s Natural History Museum, curators have placed a small nugget of dark material covered with faint indentations. The blackened lump could easily be mistaken for coal. Its true nature is much more intriguing, however.
The nugget is a polymetallic nodule and oceanographers have discovered trillions of them litter Earth’s ocean floors. Each is rich in manganese, nickel, cobalt and copper, some of the most important ingredients for making the electric cars, wind turbines and solar panels that we need to replace the carbon-emitting lorries, power plants and factories now wrecking our climate.
Continue reading...Some experts fear climate crisis is leading creatures back to area where they were hunted almost to extinction
Blue whales, the world’s largest mammals, are returning to Spain’s Atlantic coast after an absence of more than 40 years.
The first one was spotted off the coast of Galicia in north-west Spain in 2017 by Bruno Díaz, a marine biologist who is head of the Bottlenose Dolphin Research Institute in O Grove, Galicia.
Continue reading...A shutdown would have devastating global impacts and must not be allowed to happen, researchers say
Climate scientists have detected warning signs of the collapse of the Gulf Stream, one of the planet’s main potential tipping points.
The research found “an almost complete loss of stability over the last century” of the currents that researchers call the Atlantic meridional overturning circulation (AMOC). The currents are already at their slowest point in at least 1,600 years, but the new analysis shows they may be nearing a shutdown.
Continue reading...This is the moment a house fell into the sea in the resort town of Mar del Tuyú in Argentina. The footage, captured by a neighbour on 28 July, shows waves crashing against the property as part of it breaks away and falls into the water. The owners of the property were not at home when the incident occurred
Continue reading...Carbon emissions, ocean acidification, Amazon clearing all hurtling toward new records
A new study tracking the planet’s vital signs has found that many of the key indicators of the global climate crisis are getting worse and either approaching, or exceeding, key tipping points as the earth heats up.
Overall, the study found some 16 out of 31 tracked planetary vital signs, including greenhouse gas concentrations, ocean heat content and ice mass, set worrying new records.
Continue reading...Conservationists demand killer is found after creature harpooned from close range
An orphaned monk seal known as Kostis, who had become a local celebrity in Greece after being rescued by fishers three years ago, has been found harpooned from close range, prompting outrage from conservationists and demands to find his killer.
MOm, the Hellenic Society for the Study and Protection of the Monk Seal, a not-for-profit group that works to protect the endangered species, said Kostis had been deliberately killed in the waters near Alonnisos, in the northern Sporades islands.
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.
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