Figure 4. Isochrysidales detected from ice and water samples collected during Oct. 2012-Jul. 2013 at two sites from the Gulf of Finland. a-f) The bar plots show Group 1 and 2i Isochrysidales relative read abundance to total Eukaryotes. The black lines showin situ total algal biomass measured during the sample collection. g-h) Ice depth and under-ice water temperature measured at sample collection. The gray dashed lines indicate the time window during which ice existed. Next generation sequencing data from: Enberg et al.3