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Nithiyaa Nilamani (Malaysia), 4th International Symposium on the Ocean in a High-CO2 World, 3-6 may 2016, Hobart, Australia

"My sincere thanks to the OA-ICC for making it possible for me to present my research at the 4th International Symposium on the Ocean in a High-CO2 World. During the symposium, there were exchange of many experiences, suggestions and opinions with experts that would be very beneficial for the advancement of OA study to the newbie countries like Malaysia. It also gave me an opportunity to make new friends, renew old acquaintances and discuss potential collaboration.”

Abed El Rahman HASSOUN (Lebanon), 3rd GOA-ON Science Workshop, 8-10 May 2016, Hobart, Australia

"OA-ICC [...] provided for me the opportunity to present my research work to the international ocean research community, to meet experts and colleagues from all over the world and discuss with them about my results, share ideas and build a strong network with peers for future scientific collaborations."

Nuclear and isotopic techniques in ocean acidification

Nuclear and isotopic techniques are unique tools in ocean acidification research.

The history of ocean chemistry

In order to assess past changes in seawater chemistry scientists can look at certain chemical compounds incorporated in fossilized marine organisms (dated up to several millennia back) or in the skeletons of long-lived corals.

The relative amount of boron isotopes, B-11 and B-10, integrated in the calcareous structures of marine species reflect the pH level of seawater at the time of incorporation. The isotopic ratio of boron represents a proxy for ocean pH. The proficiency of this method proves itself not only in assessing past ocean chemistry, but also in building and testing projections of future acidification scenarios.

Biological processes

Radio-tracer applications are essential instruments in evaluating the biological response of marine species to ocean acidification, e.g. primary production, growth and calcification rates. This data is essential for risk assessment in key commercial species. A large part of the worlds population (around one billion people) relies on seafood as their primary source of animal protein. Ocean acidification thus has the potential to impact food security.