Figure captions
Figure 1. Potential microalgal biomass productivity in different ecoregions of South America. S. obliquus sp. C1S cultures simulating 20 cm-deep ponds in simulated-climatic conditions in (A) Comodoro Rivadavia (AR); (B) Buenos Aires (AR); (C) Posadas (AR); (D) Caracas (VE); (E) Paita (PE); and (F) Fortaleza (BR). S, summer; W, winter. The heat map was generated with Q-GIS 3.12. Data represent the mean and range of two independent experiments.
Figure 2. Effect of CO2 supplementation on biomass productivity of S. obliquus sp. C1S. 20 cm-deep ponds were simulated in summer or winter, under simulated-climatic conditions of Buenos Aires, Posadas and Fortaleza. Data represent the mean and range of two independent experiments.
Figure 3. Effect of CO2 supplementation on (A-B) carbohydrates or (D-D) lipids accumulation of S. obliquussp. C1S cultures in 20 cm-deep simulated ponds in (A, C) summer or (B, D) winter climatic conditions of Fortaleza. Data represent the mean and range of two independent experiments.
Figure 4. Effect of culture depth on algal biomass productivity. A) S. obliquus sp. C1S cultivated in ePBRs. From left to right: 20-cm deep culture, OD750 0.3; 20-cm deep culture, OD750 1.5; 5-cm deep culture, DO750 1.5. B) Growth curves; C) volumetric biomass productivity; and (D) areal biomass productivity of S. obliquussp. C1S cultures simulating different pond’s depth in summer (full circles) or winter (open circles) climate conditions in Fortaleza. Data represent the mean and standard error of six (winter, 5-cm ponds) or two (other) independent experiments.
Figure 5. Effect of culture depth on (A-B) carbohydrates or (C-D) lipids accumulation of S. obliquus sp. C1S cultures simulating 20-, 10- or 5-cm deep ponds in (A, C) summer or (B, D) winter climatic conditions of Fortaleza. Data represent the mean and standard error of four (5-cm deep ponds in winter) or two (other conditions) independent experiments.
Figure 6. Induction of lipids accumulation by S. obliquus sp. C1S in simulated 5-cm deep ponds in winter in Fortaleza. A) Growth curve; (B) lipids content on a dry weight biomass basis; and time course of (C) biomass; or (D) lipids areal productivity. Data represent the mean and range of two independent experiments.