Ocean Action Hub

Atmospheric carbon dioxide (CO2) levels are rising as a result of human activities, such as fossil fuel burning, and are increasing the acidity of seawater. This process is known as ocean acidification. Historically, the ocean has absorbed approximately 30% of all CO2 released into the atmosphere by humans since the start of the industrial revolution, resulting in a 26% increase in the acidity of the ocean (average global decrease in ocean pH of about 0.1 unit).

Ocean acidification make it more difficult for the numerous organisms that fix calcium carbonate in their skeletons and shells to do so, and can also impact metabolic and reproductive processes in many marine species. By impacting marine ecosystems at multiple levels, it has significant potential to affect food security and livelihoods that depend upon healthy marine ecosystems. The economic impact of ocean acidification could be substantial.

Reducing CO2 emissions is the only way to minimize long-term, large-scale risks from ocean acidification (IGBP, IOC, SCOR, 2013, p. 1).

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24 Apr 2017 - Local communities are at the forefront of marine resources management.

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21 Apr 2017 - As the sky turned to ink on Monday, seven men and women waited with bated breath at a secluded island off Singapore's southern coast to witness a once-a-year spectacle - an o

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19 Apr 2017 - As many countries turn inward, it is more important than ever to tackle critical challenges that are beyond the reach of any single state and which compel us to work together.

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18 Apr 2017 - A five-day regional training workshop on Coastline Mapping using Satellite Imagery was launched yesterday at the Mauritius Oceanography Institute (MOI) in Albion.

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17 Apr 2017 - More people than ever are coming to see the reef and those who make a living showing it off want the world to know it’s still a natural wonder. But they worry about its future, and that of their 64,000-strong industry.

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9 Apr 2017 - ‘Last year was bad enough, this is a disaster,’ says one expert as Australia Research Council finds fresh damage across 8,000km
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10 Apr 2017 - Australia's Great Barrier Reef, already reeling from a severe bleaching event last year, has suffered another devastating blow this year, aerial surveys released this weekend

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28 Mar 2017 - We all know ocean temperatures are increasing as a result of climate change. But what you may not know is that they are warming much faster than expected.

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The German research network BIOACID examines the effects of acidification on the life and biogeochemical cycles in the ocean - and on all those who depend on it. 

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How does climate change alter the ocean? How can the ocean provide food for our planet’s growing population?

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Maria Moreno de Castro, modeler at Helmholtz-Zentrum Geesthacht (HZG), became a scientist because she likes to solve mysteries.

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24 Mar 2017 - [UNDP Oceans Blog] The oceans sustain creatures we haven’t even discovered, but they also keep terrestrial life going.
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