Table 2.

Biological data for the four plastic types (PE, OXO, AA-OXO, and PHBV) compared to seawater (SW) according to immersion time in days (D), including bacterial cell count (BC, ×10⁵ cell mL⁻¹ for SW or ×10⁵ cell cm⁻² for plastic samples), bacterial production (BP, in ngC L⁻¹ h⁻¹ for SW or ngC dm⁻² h⁻¹ for plastic samples), and bacterial specific activity (SA, ×10⁻³ fgC cell⁻¹ h⁻¹).

		D7	D15	D22	D30	D45
SW	BC	1.16	0.89	1.71	1.15	3.07
		(0.03)	(0.04)	(0.11)	(0.001)	(0.14)
	BP	9.09	10.5	16.8	21.3	41
		(0.8)	(1.1)	(0.7)	(2.0)	(1.8)
	SA	0.079	0.118	0.098	0.185	0.133
PE	BC	1.53	3.4	6.76	9.05	3.7
		(0.34)	(0.51)	(1.45)	(1.23)	(1.33)
	BP	38.5	352.3	426.7	29	55.6
		(20.4)	(114.9)	(241.5)	(13.5)	(36.7)
	SA	2.52	10.37	6.33	0.32	1.50
	cov	1.00%	5.1%	6.5 %	15.1%	29.2 %
OXO	BC	1.57	3.75	5.65	4.92	6.89
		(0.34)	(1.29)	(1.27)	(1.35)	(1.40)
	BP	105.5	178.7	217.2	60.3	55.3
		(36.2)	(4.0)	(10.2)	(21.4)	(12.2)
	SA	6.74	5.02	3.85	1.23	0.80
	cov	3.4%	3.4	10.1%	12.3%	18.1%
AA-OXO	BC	9.25	16.1	28.4		34.1
		(3.50)	(4.47)	(3.86)		(8.47)
	BP	145.9	1396.9	1369.7		131.4
		(20.1)	(90.0)	(193.6)		(7.25)
	SA	1.58	8.67	4.82		0.39
PHBV	BC	1.25	15.2	15.3		16.3
		(0.37)	(2.92)	(3.94)		(3.61)
	BP	67	1090.4	259.4		240.9
		(58.4)	(513.5)	(125.9)		(100.4)
	SA	5.38	7.19	1.70		1.47