Steeve Comeau

steevec12My role in EPOCA Arctic

I am the only person who will work on a pelagic species in Spitzbergen this year (study 7). I will collect pteropods Limacina helicina (sea butterfly) using plankton nets or beakers mounted on sticks. I will investigate the effect of different pH and temperature conditions on pteropods shell and physiology. Particular attention will be put on the impact of ocean acidification on pteropod calcification rates using different tools such as the incorporation of a fluorochrome or the radio-element 45Ca. I will be also looking at their digestion rates and respiration rates under different controlled conditions.

My thoughts on the trip

It will be interesting to see the interactions between several scientists from different countries working together on the same project! I am also impatient to be on a boat in the middle of the fjord and appreciate the cold wind and the nature!

More about my research

I am in the second year of my PhD in the Laboratoire d’Océanographie de Villefranche (France) and I am working on the impact of ocean acidification on Mediterranean and polar pteropods. My experiments on the Mediterranean pteropods (Cavolinia inflexa, Creseis virgula, Limacina inflata) are carried out in Villefranche. This year is the second time during my PhD that I go to work in Ny-Alesund for work on the sensitive polar species. Another part of my PhD is to study the Bay of Villefranche pteropod long-term time series (40 years) in relation to climatic parameters.

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