Table 4 Abundance, sinking velocity, and size of aggregates formed in roller tank experiments inoculated to higher total cell abundances (105 cells mL−1).

From: Particle-associated bacteria differentially influence the aggregation of the marine diatom Minutocellus polymorphus

Sinking aggregate formation in roller tanks

End of bloom and sedimentation

Treatment

Background cell abundance

(×105 mL−1)

Aggregate abundance (per tank)

Sinking velocity (m d−1)

ESD

(mm)

Before rotation

After rotation

M. polymorphus,

axenic

2.1 ± 0.4

1.6 ± 0.2

1.67 ± 2.89

304 ± 105

n = 5

1.9 ± 0.25

n = 3

M. adhaerens,

axenic

1.6 ± 0.06

1.5 ± 0.6

0

-

-

M. polymorphus

 + M. adhaerens

M. polymorphus: 1.8 ± 0.5

M. polymorphus: 1.1 ± 0.1

13.70 ± 4.04

-

-

M. adhaerens:

2.4 ± 0.1

M. adhaerens:

2.7 ± 0.3

  1. Values are the means ± standard deviations of triplicate tanks (cell and aggregate abundance) or aggregates (all other parameters). Values in bold are significantly different to axenic M. polymorphus.
  2. - No data.
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