MedSea Mesocosm Experiment in the Eastern Mediterranean Sea

Effects of ocean acidification and warming on pelagic ecosystem functioning of the Mediterranean

Primary production (by Stella Psarra)

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This year, the responsibility of organizing a cruise just after this experiment did not allow me to participate in the preparatory phase of filling the mesocosms and share the enthusiasm and great fatigue of colleagues in the Institute and from abroad. Well, working from 8.30 in the morning till 10.30 at night during the first days was not much fun either… as is the case for many of the parameters studied in this experiment. As a “phytoplankton” person I’ve been responsible for the primary production measurements. And, as most of the people around, have been seriously wondering whether we might be able to get “something” out of “nothing”…. Or else, is the content of the water here really “nothing”, in this ultra-oligotrophic E. Mediterranean area? And how this “nothing-and/or-close-to-detection-limit-my-nerves!” will behave with warming and/or acidification? It’s a new day of the experiment today and anxiously we gather to check the results… Well, there is something “moving” in these ultra “poor” mesocosm bags! And much of this “movement” was not quite expected… It’s early to talk about it, just some first indications… but it might be an interesting surprise! As for the work itself, it’s always a real pleasure to work with a good team! Anna and Giannos help turn exhaustion into an inspired sweet fatigue! More to come soon.



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