Posts in oceans
The deal that saved Seychelles’ troubled waters

BBC Future

August 3, 2020
After defaulting on its substantial national debt, the Seychelles was offered an unusual deal.

Located around 1,600 kilometres (994 miles) off the coast of East Africa, the Seychelles is an ecological paradise. The archipelago of 115 lush and rocky islands sits amongst vast swathes of ocean, covering some 1.35 million square kilometres (521,000 square miles). They’re home to some of the world’s last pristine coral reefs and are teeming with endangered species, including the southern fin whale and the Indian Ocean’s only dugongs – large marine mammals also known as “sea cows”.

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Ocean likely to heat up at 7 times its current rate, new study finds

WEF Blog

June 1, 2020
The depths of the oceans are heating up more slowly than the surface and the air, but that will undergo a dramatic shift in the second half of the century, according to a new study. Researchers expect the rate of climate change in the deep parts of the oceans could accelerate to seven times their current rate after 2050, as The Guardian reported.

The study, published in the journal Nature Climate Change, found that different parts of the ocean undergo change at different rates as the extra heat from increasing levels of greenhouse gases moved through the vast ocean depths, making it increasingly tricky for marine life to adapt, according to The Guardian.

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New High Seas Treaty Could Be a Gamechanger for the Ocean

The Revelator

May 7, 2020
Most of us have never been to the world’s immense last wilderness and never will. It’s beyond the horizon and often past the limits of our imaginations. It contains towering underwater mountain ranges, ancient corals, mysterious, unknown forms of life and the largest seagrass meadow in the world.

Yet it begins just 200 nautical miles off our shores. Technically referred to as “areas beyond national jurisdiction,” these remote expanses are known to most people simply as “the high seas.”

Their vast, dark waters encompass roughly two-thirds of the ocean and half the planet and are the last great global commons. Yet just 1% are protected, leaving these vital but relatively lawless expanses open to overfishing, pollution, piracy and other threats.

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Great Barrier Reef suffers third mass bleaching event in five years

CNN

April 7, 2020
Australia's Great Barrier Reef has experienced its most widespread bleaching event on record, with the south of the reef bleaching extensively for the first time, a new survey has found.

This marks the third mass bleaching event on the reef in just the last five years and scientists say that the rapid warming of the planet due to human emissions of heat-trapping gases are to blame.

Aerial analysis conducted by Terry Hughes, director of the ARC Center of Excellence for Coral Reef Studies at James Cook University, and others from the Great Barrier Reef Marine Park Authority, found that coastal reefs along the entire length of the iconic reef -- a stretch of about 1,500 miles (2,300 kilometers) from the Torres Strait in the north, right down to the reef's southern boundary -- have been severely bleached.

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Marine life in the world's oceans can recover to healthy levels by 2050, researchers say

CNN

April 2, 2020
Marine life in the world's oceans could recover to healthy levels in the next thirty years if decisive and urgent action is taken, an international review has found.

A team of scientists from around the world found marine life to be "remarkably resilient" despite damage caused by human activity and interference, they said in a review published Wednesday in science journal Nature.

Researchers said ocean populations could be restored as soon as 2050, but warned that there is limited time to achieve this change.

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The importance of restoring marine biodiversity

Euronews

April 1, 2020

Scientists estimate that roughly one million land and marine species may become extinct in the foreseeable future. Many within decades.

What are the main reasons for the decline of underwater ecosystems?

Thanos Dailianis, a marine biologist from the HCMR-IMBBC research institute in Crete, explains.

“Marine ecosystems are threatened both locally and globally. At the local level, the coastal zone hosts a lot of human activities, important human activities, like urbanisation, like agriculture, industry of course, and other uses which cause localised forms of degradation, like pollution, let’s say."

"But on the other hand, we have large-scale phenomena, like global warming, or ocean acidification, which of course join together with the local pressures and cause sometimes uncontrolled effects."

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Will Ocean Seabed Mining Delay The Discovery Of Potential Coronavirus Vaccines?

Forbes

March 16, 2020
[…] At the same time, the race is now on to develop a COVID-19 vaccine, ahead of any second wave of infections later this year.

[…]

Last week among the COVID-19 headlines, David Attenborough made a plea calling for Deep Ocean Seabed Mining to be banned.  One of the reasons he cited was the importance of deep water corals and microscopic microbes at the bottom of the ocean.

It turns out, these are extremely valuable for modern medicine, including addressing coronaviruses.

A protein from an ocean seabed algae found among coral reefs was revealed to show activity against another coronavirus known as Middle East Respiratory Syndrome or MERS. 

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Sir David Attenborough urges halt to deep sea mining plans in wake of new scientific report

Oceanographic

March 11, 2020
Sir David Attenborough has urged countries to halt plans to mine the deep sea. This comes in light of a recently published report from scientists at Fauna & Flora International (FFI) warning that deep sea mining is likely to cause significant disruption to the ocean’s life-support systems, its carbon capture and a loss of biodiversity.

The report is the first to comprehensively assess the risks and potential impacts of mining the deep seabed for minerals. Its publication comes ahead of a July meeting of key countries hoping to finalise the rules that will govern deep sea mining.

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Coronavirus: UN delays talks on global ocean biodiversity treaty

Climate Home News

March 11, 2020
Observers say additional time could help countries agree on rules to create marine protected areas in parts of the ocean that lie beyond national jurisdiction.

The UN has postponed deadlocked talks on a global treaty to protect marine biodiversity in the high seas because of the coronavirus, giving countries extra time to seek compromise.

Governments had been due to agree a global treaty in April to safeguard life in seas beyond the national jurisdiction of coastal states, a poorly regulated region accounting for two-thirds of the global ocean.

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Reef-building coral exhibiting 'disaster traits' akin to the last major extinction event

Phys.org

March 3, 2020
A study published Tuesday in Scientific Reports shows that stony corals, which provide food and shelter for almost a quarter of all ocean species, are preparing for a major extinction event.

The research team—which includes scientists from The Graduate Center, CUNY; Baruch College; Scripps Institution of Oceanography; University of Haifa; University of Leeds; and GEOMAR Helmholtz Centre for Ocean Research—found that corals are currently exhibiting a suite of dynamic survival responses that correspond with their last major extinction 66 million years ago. 

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Report: Pacific Marine National Monuments Don't Harm Fishing Industry

The Maritime Executive

February 22, 2020
New findings released in the peer-reviewed journal Nature Communications indicate that expansion of the Pacific Remote Islands and Papahanaumokuakea Marine National Monuments did not cause overall economic harm to the Hawaii-based longline tuna fishing fleet.

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'Astonishing' blue whale numbers at South Georgia

BBC

February 20, 2020
Their 23-day survey counted 55 animals - a total that is unprecedented in the decades since commercial whaling ended. […]

To witness 55 of them now return to what was once a pre-eminent feeding ground for the population has been described as "truly, truly amazing" by cetacean specialist Dr Trevor Branch from the University of Washington, Seattle.

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Earth's coral reefs could be gone by 2100, research finds

NBC News

February 18, 2020
Climate change could wipe out almost all coral reef habitats around the world by 2100, according to research released Monday.

The bleak outlook forecasts that warming oceans and rising seas could have a devastating impact on ocean ecosystems, suggesting that efforts to restore dying corals will likely encounter difficulties as global warming continues to wipe out habitats that could once support healthy reef systems.

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The world’s oceans are speeding up — another mega-scale consequence of climate change

The Washington Post

February 5, 2020
Three-quarters of the world’s ocean waters have sped up their pace in recent decades, scientists reported Wednesday, a massive development that was not expected to occur until climate warming became much more advanced.

The change is being driven by faster winds, which are adding more energy to the surface of the ocean. That, in turn, produces faster currents and an acceleration of ocean circulation.

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