Fig. 4: Aggregation of Minutocellus polymorphus in roller tanks with and without the addition of Marinobacter adhaerens HP15, Vibrio thalassae, or Pseudoalteromonas carrageenovora.

Number of visible sinking aggregates formed in roller tanks with axenic Minutocellus polymorphus, and M. polymorphus with the addition of 2.5 µm silica beads, Marinobacter adhaerens HP15, Vibrio thalassae, or Pseudoalteromonas carrageenovora in the low cell abundance experiments (a ca. 10³ cells mL⁻¹; Table 3) and of axenic M. polymorphus and M. polymorphus with the addition of M. adhaerens in the high cell abundance experiments (b 10⁵ cells mL⁻¹; Table 4). Lowercase letters indicate significant differences between treatments.