"Moin" and hello, my name is Marie and in my doctoral project I will deal with disentangling the interplay of the phenotypic plasticity and epigenetics of Ostreococcus sp.. For this purpose, I will analyze the phenotypic plasticity of natural Ostreococcus sp. isolates from the Baltic Sea and afterwards compare these results with previous plasticity experiments. Furthermore, I will study the epigenetics of the natural and other Ostreococcus sp. cultures with known evolutionary histories. With my research I would like to contribute to a better understanding of the connections between epigenetics and adaptation of pico-phytoplankton.