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 makes 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).

Latest

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

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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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Bladderwrack, Fucus vesiculosus, provides a perfect basis for ecosystems in the Baltic Sea. Many other organisms thrive in the Fucus forests. Also fish lay their eggs there.

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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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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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22 Mar 2017 – Over a year ago, on 20 February 2016, Tropical Cyclone Winston made a category 5 landfall along the north coa

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9 Mar 2017 - Farmers wanting to expand their land activities within the Great Barrier Reef catchment could be forced to offset any potential water pollution. 

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Event Date:
09/03/2017 - 08:15 to 30/03/2017 - 08:15
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2 Mar 2017 - Scientists now understand how the carbon and methane emissions from our cars, livestock and electricity use 

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1 Mar 2017 - Iron particles generated by cities and industry are being dissolved by man-made air pollution and washed into the sea - potentially increasing the amount of GHG that our ocean can absorb.

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This first Ocean Literacy Massive Open Online Course (MOOC) aims to empower and...
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