A – Physical characteristics
1 – pH
2 – Temperature
3 – Turbidity

A – Biological characteristics
1 – Diatoms (by Lou-Anna/Eva and Arnaud/Hugo)
2 – Vessels elements (by Titouan/Naël and by Marion/Lou V.)
3 – Rotifera (by Aline/Juliette and Quentin/Thibaut)
4 – Paramecia (by Rose/Lou P.)