Ocean Action Hub
[ SDG Target 14.3 ] Minimize and address the impacts of ocean acidification, including through enhanced scientific cooperation at all levels.
 

Definition

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

14 Aug 2020 - Temperature and CO2 changes reduce the numbers of some species and promote the growth of algae, University of Adelaide study finds

Approved

10 Aug 2020 - Coral reefs face an uncertain future and may not recover naturally from human-caused climate change.

Approved

21 Apr 2020 - I am where you came from. When you look at me, you are looking at your past and your future rising to get you.

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14 Jan 2020 - The Guardian - Oceans are clearest measure of climate crisis as they absorb 90% of heat trapped by greenhouse gases.

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The Ocean Sciences Meeting (OSM) is the flagship conference for the ocean sciences and the larger ocean-connected community.  As we approach the UN Decade of Ocean Science for Sustainable Developme

Event Date:
16/02/2020 - 09:30 to 21/02/2020 - 18:30
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19 Nov 2019 - Indian Ocean dipole events, linked to bushfires and floods, are becoming stronger and more frequent, scientists say.

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8 Nov 2019 - The Ocean Risk Resilience Action Alliance is using innovative finance mechanisms to help protect and regenerate coastal ecosystems.

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28 Oct 2019 - Governments, businesses, organizations and research institutions made commitments toward improving marine health and productivity worth more than $63 billion.

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24 Oct 2019 - Ocean acidification can cause the mass extinction of marine life, fossil evidence from 66m years ago has revealed.

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18 Oct 2019 - But as the climate warms, reefs need protection from threats such as overfishing and pollution.

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25 Sept 2019 - Growing coastal flooding is inevitable, and damage to corals and other marine life has already been unleashed. But scientists say the world still has time to avert even more severe consequences.

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23 Sept 2019 - There is now overwhelming scientific evidence that the ocean can be a potent force in stabilizing the climate and building a secure future for everyone.

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