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Corals are threatened by global warming

A bit of pre-emptive tinkering by people might help to save them | Science & technology ....

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Carbon Absorption is the Key to Surviving Drastic Climate Changes, Study Shows

May 09, 2021 10:58 PM EDT
The gold standard calculation used to measure the pump s power has a greater margin of uncertainty than previously assumed, and estimates of how much atmospheric pollution the ocean would pump down to varying depths could be off by 10 to 15 parts per million, according to the researchers.
(Photo : Francesco Ungaro )
(Photo : ARC Centre of Excellence for Coral Reef Studies/Greg Torda)
Given that the planet already emits approximately 2.5 parts per million of carbon dioxide into the atmosphere per year, the team predicts that the latest ambiguity leads to a five-year error in climate target forecasts.
Algae and Carbon Absorption ....

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Red Sea corals to persist, even as other corals succumb to global warming

Red Sea corals to persist, even as other corals succumb to global warming
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Researchers studied corals in the Gulf of Aqaba, at the northern tip of the Red Sea, to gain understanding of their particular resistance to higher temperatures and learn how to better protect them. Photo by Romain Savary/EPFL
May 4 (UPI) New lab experiments have shed light on the ability of corals in the Red Sea s Gulf of Aqaba to survive rising ocean temperatures.
When marine heatwaves strike, the algae that provide corals with nutrients and their vibrant colors abandon their homes.
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The phenomenon, known as coral bleaching, has become more widespread throughout the reefs of Australia, the Maldives and the Caribbean. ....

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Northern Red Sea corals pass heat stress test with flying colors

EPFL
The corals in the Gulf of Aqaba are particularly resistant to higher temperatures. © Maoz Fine
EPFL scientists are beginning to understand why corals in the Gulf of Aqaba, along with their symbiotic algae and bacteria, resist higher temperatures particularly well.
Even under the most optimistic scenarios, most of the coral reef ecosystems on our planet – whether in Australia, the Maldives or the Caribbean – will have disappeared or be in very bad shape by the end of this century. That’s because global warming is pushing ocean temperatures above the limit that single-cell algae, which are corals’ main allies, can withstand. These algae live inside coral tissue for protection and, in exchange, provide corals with essential nutrients produced through photosynthesis. Because the algae contain a variety of pigments and therefore give coral reefs their famous colors, if they are lost the corals turn white, which is known as coral bleaching. But in spite of the ....

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Corals in the northern Red Sea can resist global warming • Earth.com

05-03-2021
By
Earth.com staff writer
Corals in the northern Red Sea, along with their symbiotic algae, appear to be overcoming the threat of global warming. In a new study from EPFL, experts are closer to understanding why.
Global warming is pushing ocean temperatures beyond the limit that coral reefs, as well as many other marine organisms, will be able to survive. For example, the photosynthetic algae that provide corals with essential nutrients will not be able to resist the temperatures that are projected by the end of this century.
These symbiotic algae contain a variety of pigments that give coral reefs their brilliant colors. As the algae are lost, the corals turn white in a process known as coral bleaching. ....

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