A team of marine experts is helping predict the future of coastal ecosystems after discovering that warming temperatures may exacerbate ocean acidification.
In a paper published in full by Nature Climate Change magazine this month, the scientists warn that rapidly deteriorating Mediterranean coastal ecosystems are further threatened by increasing CO2 levels.
Dr Riccardo Rodolfo-Metalpa has been studying marine life off the Island of Ischia in Italy where carbon dioxide bubbles up through vents in the seabed due to volcanic activity around Mount Vesuvius in Naples.
Dr Rodolfo Metalpa, said: “Our transplant experiments with corals, limpets and commercially important mussels have shown the severe risks associated with increasing carbon dioxide emissions for marine life. These animals try to grow their shells and skeletons faster but they simply dissolve away. Mediterranean coastal ecosystems are being degraded by increasing temperatures and we now know that this warming can make the effects of ocean acidification worse.”
Dr Jason Hall-Spencer, a Reader in Marine Biology at Plymouth University, coordinated the team of scientists from Monaco, Italy, Israel and France as part of a project to assess the risks related to ocean acidification and seawater temperature increase at organism, ecosystem and economic scales.
Dr Hall-Spencer said: “Carbon dioxide vents provide natural laboratories that show us what coastal areas might look like if ocean acidification continues to worsen. They also help us predict how people will be affected if CO2 levels continue to rise rapidly. We see major losses in biodiversity and the aquaculture industry is right to be nervous about the effects of carbon dioxide.
“This research adds to a raft of new studies that highlight an urgent need for both lowering carbon dioxide emissions and increasing marine conservation efforts worldwide to slow the loss of marine biodiversity and build resilience in the coastal systems we rely upon.”
The Intergovernmental Panel on Climate Change’s (IPCC) 4th Assessment Report estimates that unless CO2 emissions are greatly reduced by the end of the century, mean surface ocean pH will decline from the current level of 8.1 to 7.8, due to rising atmospheric CO2 concentrations.
This new study builds on work published by the team in Nature and National Geographic Magazine and documents the corrosive effects of acidified water on mollusc shells and coral skeletons.
ENDS
Notes to Editors:
More photographs are available on request.
This video link shows the transplantation experiments and the ‘Jacuzzi effect’ of the underwater CO2 vents http://www.youtube.com/watch?v=pbhU5ckSLGE
The research was funded by the Prince Albert II of Monaco Foundation, the EU `Mediterranean Sea Acidification under a changing climate project (MedSeA), and the Save our Seas Foundation and contributes to the European Project on OCean Acidification (EPOCA).
The European Mediterranean Sea Acidification in a changing climate (MedSeA) initiative is a newly funded project by the European Commission under Framework Program 7. It involves 16 institutions from 10 countries. The overall goal is to assess uncertainties, risks and thresholds related to Mediterranean acidification at organism, ecosystem and economic scales.
http://medsea-project.eu
The Save Our Seas Foundation is committed to protecting our oceans by funding research, education, awareness and conservation projects focusing on the major threats to the marine environment.
The Prince Albert II of Monaco Foundation strives to act as an accelerator of projects and solutions for the environment. It promotes sustainable and equitable management of natural resources and places the individual at the centre of its projects. It encourages the implementation of innovative and ethical solutions in three main areas: climate change, biodiversity and water.
The EU FP7 large-scale integrating project EPOCA (European Project on OCean Acidification) has the overall goal to fill the numerous gaps in our understanding of ocean acidification and its consequences. The EPOCA consortium brings together more than 160 scientists from 32 institutes and 10 European countries. The research of this four-year long project is partly funded by the European Commission.
For more information, please telephone Vanda Sampson in the University Press Office on 01752 588004.
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