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EFFECTS OF CLIMATE CHANGE AND OCEAN ACIDIFICATION ON MARINE GASTROPODS EFFECTS OF CLIMATE CHANGE AND OCEAN ACIDIFICATION ON MARINE GASTROPODS EFFECTS OF CLIMATE CHANGE AND OCEAN ACIDIFICATION ON MARINE GASTROPODS EFFECTS OF CLIMATE CHANGE AND OCEAN ACIDIFICATION ON MARINE GASTROPODS EFFECTS OF CLIMATE CHANGE AND OCEAN ACIDIFICATION ON MARINE GASTROPODS

EFFECTS OF CLIMATE CHANGE AND OCEAN ACIDIFICATION ON MARINE GASTROPODS

Climate change is a fact: the 1983–2012 period was likely the warmest of the last 1400 years with a linear temperature increase trend of about 0.85 ⁰C.

EFFECTS OF CLIMATE CHANGE AND OCEAN ACIDIFICATION ON MARINE GASTROPODS

The global annual mean concentration of CO2 in the atmosphere has increased by more than 40% since the start of the Industrial Revolution. Elevated atmospheric CO2 is absorbed by the oceans causing a pH reduction (ocean acidification).

EFFECTS OF CLIMATE CHANGE AND OCEAN ACIDIFICATION ON MARINE GASTROPODS

pH has already declined by 0.1 units compared with pre-industrial times and a further reduction of 0.3–0.5 units is expected by 2100 according to the median IPCC emission scenarios.

EFFECTS OF CLIMATE CHANGE AND OCEAN ACIDIFICATION ON MARINE GASTROPODS

Ocean acidification may act synergistically with increased temperature and other environmental stressors. Ocean acidification inhibits calcification rates or causes dissolution of the existing shell in shell-forming marine organisms such as molluscs.

EFFECTS OF CLIMATE CHANGE AND OCEAN ACIDIFICATION ON MARINE GASTROPODS

Ocean acidification may also cause vulnerability to predation and changes to oxygen consumption, fitness capacity and homeostasis.

the Ecco Project

Anthropogenic activities, such as fossil fuel combustion and deforestation, are responsible for the increase of atmospheric carbon dioxide, which in turn is absorbed by the oceans causing changes in seawater carbonate chemistry. Ocean acidification (low pH) decreases the calcium carbonate saturation states in seawater, thus inhibiting calcification rates in shell-forming marine organisms. Elevated carbon dioxide may have additional sublethal impacts on organismal, developmental and physiological levels and as a result can significantly suppress the abundance and diversity of species.

Four different experimental treatments are planned during the ECCO Project using a combination of low or ambient pH and increased or ambient temperature in order to investigate the long-term synergistic effects of those two factors on marine gastropods. An integrated multi-disciplinary approach is used to investigate morphological, physiological, behavioral, chemical and molecular responses of a selected gastropod species on a complementary basis. A long term experiment (one year) is scheduled in order to investigate the direct and indirect effects of low pH and increased temperature and also to reveal possible adaptations of the organisms. The methodology will include scanning of calcified structures with a micro-computed tomograph (micro-CT), advanced analysis of 3D models, Confocal Raman Microscopy for CaCO3 polymorphs and real-time PCR gene expression analysis.

ECCO project on Euronews

April 1, 2020 July 2, 2021News and Events

Scientists from Hellenic Centre for Marine Research – HCMR presented the threats to marine biodiversity on Euronews English#oceanEU. The activities of ECCO Project were also…

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5th International Symposium on the Ocean in a High CO2 World – cancelled

March 6, 2020 July 2, 2021News and Events

The 5th Symposium on the Ocean in a High-CO2 World is being organized by the Pedro Ruiz Gallo National University in cooperation with the International…

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What is Ocean Acidification?

September 13, 2019 September 13, 2019News and Events

A comprehensive video from the University of Plymouth

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New satellite reveals places on Earth most at risk from ocean acidification

April 16, 2019 April 16, 2019News and Events

“Acidification isn’t happening at the same pace everywhere, some places are acidifying faster than others. Observing the earth from space using satellites can help identify…

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Ocean Monitoring Indicators (OMIs)

April 16, 2019 April 16, 2019News and Events

The Copernicus EU Marine Service announced the launch of new #Ocean_Monitoring_Indicators (OMIs) which include #ocean_acidification. Watch the video!

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