University of Cadiz_11B-1B_1: It was great while it lasted

Hi! We’re back with new changes in our Winogradsky column.

                                              Half and half                  Sunlight indirect          Sunlight direct
 

(Sunlight indirect exposition)

There’re more black areas because it has increased the number of iron oxidizing bacteria that have produced Fe, which have been mixed with the sulfur generated by non-sulfur bacteria producing FeS

(Sunlight direct exposition) there has been a massive growth of algae because there are favorable conditions (light and inorganic matter) at this time for their development .

Small dots have appeared, which are air bubbles (O₂) produced by algae.

(Half sunlight indirect exposition and half sunlight direct exposition)

We can see black filaments. Probably, that's due to the algae near the FeS have died and they’re in a state of decomposition.

This is our last Winogradsky column’s post, hope you enjoyed it and found it extremely interesting ;)