Experiment

Cell abundance [103cells.ml-1]

Chlorophyll [μg.l-1]

pH drift time [h]

pH at Start of prec.

Length of prec. [h]

% of Ca2+ precipitation

Mychonastes sp. (1) Mychonastes sp. (2) Chlorella sp. (1) Chlorella sp. (2) Synechococcus (1) Synechococcus (2)

13.2 22.9 6.85 8.71 33.4 94.1

142 448 222 379 130 324

45 18 25 11 40 30

9.05 9.20 9.00 8.95 8.95 9.05

50 30 10 4 40 8

41 34 26 29 13 32

Table 3: Precipitation experiments of CaCO3 induced by several types of algae [18].