Fig. 3

Projection of the studied variables and observations onto the factorial plane PC 1 and PC 2 for Chlorophyta. 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). Observations: species or strain numbers (circles): Tetradesmus dissociatus (1); Ankistrodesmus fusiformis (2); Ankistrodesmus falcatus (3–5); Chlamydocapsa bacillus (6); Chlamydomonadales sp. TGA3 (7); Chlamydomonadales sp. TGA5 (8); Chlamydomonas sp. (9); Mychonastes homosphaera (10–11); Chlorella sorokiniana (12); Chlorella sp. (13); Chlorella sp. MRA-1 (14); Chlorella sp. PGA2 (15); Chlorella sp. TGA2 (16); Chlorella sp. TGA4 (17); Chlorella vulgaris (18–22); Chlorella vulgaris CCAP 211/11B (23); Chlorella vulgaris F&M-M49 (24); Chlorella vulgaris AG10032 (25); Chlorella vulgaris CCAP 211 (26–28); Chlorella vulgaris UTEX 395 (29, 30); Chlorella vulgaris CCAP 211/11B (31–35); Chlorococcum sp. (36); Chromochloris zofingiensis (37, 38); Coelastrum microporum (39); Desmodesmus brasiliensis (40); Hindakia tetrachotoma ME03 (41); Hindakia tetrachotoma PGA1 (42); Kirchneriella lunaris (43); Micractinium sp. ME05(44); Ettlia oleoabundans (45, 46); Ettlia oleoabundans REF2 (47); Raphidocelis subcapitata (48); Tetradesmus obliquus (49–53); Desmodesmus communis (54, 55); Scenedesmus sp. (56–58); Scenedesmus sp. DM (59); Scenedesmus sp. ME02 (60); Tetraselmis chuii (61); Tetraselmis gracilis (62); Tetraselmis sp. (63); Tetraselmis striata BBRR1 (64); Tetraselmis suecica (65–67); Tetraselmis suecica F&M-M33 (68); Tetraselmis suecica F&M-M35 (69); Tetraselmis tetrathele (70)