Table 1.

Description of the incubation experiments.

	Treatment	Description
(1)	SW+BI_4	SW inoculated with BI (Control), 4°C
(2)	SW+BI_24	SW inoculated with BI (Control), 24°C
(3)	SW+SI+oil_4	SW inoculated with SI+LLS oil, 4°C
(4)	SW+SI+oil_24	SW inoculated with SI+LLS oil, 24°C
(5)	SW+BI+oil_4	SW inoculated with BI+LLS oil at 4°C
(6)	SW+BI+oil_24	SW inoculated with BI+LLS oil, 24°C
(7)	BW+SI _4	BW inoculated with SI (Control), 4°C
(8)	BW+SI _24	BW inoculated with SI (Control), 24°C
(9)	BW+SI+oil_4	BW inoculated with SI+LLS oil, 4°C
(10)	BW+SI+oil_24	BW inoculated with SI+LLS oil, 24°C
(11)	BW+BI+oil_4	BW inoculated with BI+LLS oil, 4°C
(12)	BW+BI+oil_24	BW inoculated with BI+LLS oil, 24°C

Light Louisiana sweet crude oil (LLS) was directly added at a final concentration of 200 ppm. SW- filtered surface water; SI- unfiltered surface water (inoculum); BW-filtered bottom water; BI- unfiltered bottom water (inoculum). 20 ml of filtered water and 2.5 mL of unfiltered water/inoculum were added. Water samples were filtered through 0.20 μm polycarbonate filters. Incubation was conducted at 4 or 24°C in the dark.