Fig. 5

Projection of the studied variables and observations onto the factorial plane PC 1 and PC 2 for marine microalgae. Indicators (variables): light intensity (µmol photons m^− 2 s^− 1); cultivation time (days); lipid content (% DW); lipid productivity (mg L^− 1 day^− 1); total nitrogen (g L^− 1); total phosphorus (g L^− 1); N:P (unit). Group A: Porphyridium purpureum; Akashiwo sanguinea; Alexandrium affine; Polykrikos geminatum; Prorocentrum cordatum (strains a, b); Prorocentrum triestinum (strains a, b); Scrippsiella rotunda; Isochrysis aff. galbana clone T-Iso CCAP 927/14; Isochrysis galbana; Isochrysis sp.; Isochrysis sp. (T-ISO) CS 177; Isochrysis sp. F&M-M37; Diacronema lutheri CS 182; Rebecca salina CS 49; Chaetoceros muelleri; Chaetoceros calcitrans; Phaeodactylum tricornutum; Phaeodactylum tricornutum CCMP 2561; Skeletonema costatum; Skeletonema sp.; Thalassiosira pseudonana; Nannochloropsis sp. F&M-M26; Nannochloropsis sp. F&M-M28; Nannochloropsis sp. F&M-M29; Nannochloropsis oceanica CCMP1779; Nannochloropsis oculate; Nannochloropsis sp. CS 246; Nannochloropsis sp. F&M-M24; Nannochloropsis sp. F&M-M27; Ellipsoidion sp.; Tetraselmis chuii; Tetraselmis gracilis; Tetraselmis sp.; Tetraselmis striata BBRR1; Tetraselmis suecica; Tetraselmis suecica F&M-M33; Tetraselmis suecica F&M-M35; Tetraselmis tetrathele. Group B: Microchloropsis gaditana CCMP527; Nannochloropsis granulata CCMP525; Nannochloropsis oceanica 805; Nannochloropsis oceanica CCMP1779; Nannochloropsis oceanica CCMP531; Nannochloropsis oceanica IMET1; Nannochloropsis oculate; Nannochloropsis oculata CCMP529; Microchloropsis salina CCMP1176; Microchloropsis salina CCMP537. Group C: Arthrospira platensis; Arthrospira platensis NIOF17/003; Isochrysis sp.; Pavlova sp.; Cylindrotheca fusiformis; Phaeodactylum tricornutum; Nannochloropsis sp.; Tetraselmis suecica