Table 1. Abiotic and microbiological parameters.

	FRESHWATER			SEAWATER
	FWS	FWP	FWM	SWP	SWA	SWM
a Sal (S)	0.09	0.83	0.73	26.67	33.64	32.63
b T (°C)	22	22	28	25	25	26
c TP (µM)	0.54	0.22	0.78	0.32	0.49	0.33
d NH3 (µM)	0.48	1.11	7.17	1.40	0.90	0.73
e NO2− (µM)	0.44	0.33	0.54	0.39	0.38	0.41
f NO3− (µM)	1.80	8.20	nd	0.95	0.90	0.73
g SiO2 (µM)	20.45	28.03	44.98	22.85	2.44	1.53
pH	5.5	5.5	6.5	7.0	7.5	7.0
h MA (106cells.mL−1)	0.15	0.23	1.36	0.30	0.26	0.12
i MP (µg C.L−1.h−1)	0.26	1.97	3.44	1.08	0.76	0.44
j SP (fg C.cell−1.h−1)	1.69	8.51	2.53	3.54	2.88	3.43

^aSal, salinity;

^bT, temperature;

^cTP, total phosphorous;

^dNH₃, ammonia;

^eNO₂ ⁻, nitrite;

^fNO₃ ⁻, nitrate;

^gSiO₂, silicon;

^hMA, microbial abundance;

ⁱMP, microbial production; and

^jSP, specific production.

FWS – Parnaioca freshwater spring; FWP – Parnaioca river; FWM – mangrove; SWP – Parnaioca beach; SWA – Aventureiros beach; SWM – seawater near Meros island.