Table 1 System parameters used in the chemostat experiments

From: Reversal in competitive dominance of a toxic versus non-toxic cyanobacterium in response to rising CO2

Parameter

Description

Carbon-limited chemostats

Light-limited chemostats

Units

D

Dilution rate

0.011

0.011

h−1

I in

Incident irradiance

50

25

μmol photons m−2 s−1

z m

Mixing depth

0.05

0.05

m

K bg

Background turbiditya

8 to 12.5

4 to 9

m−1

T

Temperature

21.5

21.5

°C

a

Gas flow rate

25

25

l h−1

γ

Constant of proportionality for gas influxa

1.4 × 10−4 to 2.0 × 10−4

1.4 × 10−4 to 2.0 × 10−4

l−1

pCO2

Partial pressure of CO2 in gas inflow

200

1000 to 1250

p.p.m.

[CO2]in

Concentration of dissolved CO2 at influx

8

29

μmol l−1

[CARB]in

Summed concentration of bicarbonate and carbonate at influx

500

2000

μmol l−1

ALKin

Alkalinity at influx

0.80

2.1

mEq l−1

  1. aBackground turbidity and the constant of proportionality for gas influx had different values for different chemostat vessels.