Dynamics of the Methanogenic Archaea in Tropical Estuarine Sediments

Table 2

Results of the ANOVA (F) and multiple comparisons analysis (MCA) (Tukey test) of environmental and microbiological variables between seasons and sediment depth in Chantuto-Panzacola and Carretas-Pereyra. P: significance. Seasons: D: dry and R: rainy. Depth: 6 cm and 12 cm.

Variables	Season			Depth
	F	P	MCA	F	P	MCA
Chantuto-Panzacola
Temperature (°C)	4.66	0.0421	D > R	3.75	0.0684	—
Salinity (‰)	62.03	0.0000	D > R	0.08	0.9311	—
Sulphate (mM)	109.00	0.0000	D > R	0.45	0.5349	—
pH	28.81	0.0000	D > R	0.01	0.9427	—
Eh (mV)	4.54	0.0446	D < R	38.04	0.0000	6 < 12
MA-Acetate (cells/g)	112.38	0.0000	D < R	0.01	0.7842	—
MA-Hydrogen (cells/g)	15.10	0.0008	D < R	0.05	0.8195	—
MA-Methanol (cells/g)	5.92	0.0236	D < R	3.36	0.0528	—
Activity + SO4 (mM acetate/g VS/day)	14.71	0.0009	D > R	1.50	0.2321	—
CH4 + SO4	66.12	0.0000	D < R	0.85	0.3085	—
CH4 − SO4	4.96	0.0364	D < R	2.17	0.0831	—
Carretas-Pereyra
Temperature (°C)	0.97	0.3344		1.28	0.2705	—
Salinity (‰)	154.47	0.0000	D > R	0.26	0.6156	—
Sulphate (mM)	210.03	0.0000	D > R	0.45	0.5101	—
pH	10.47	0.0038	D > R	1.09	0.3088	—
Eh (mV)	3.80	0.0641	—	19.80	0.0002	6 < 12
MA-Acetate (cells/g)	4.82	0.0390	D < R	0.13	0.7193	—
MA-Hydrogen (cells/g)	9.39	0.0057	D < R	0.48	0.4952	—
MA-Methanol (cells/g)	2.71	0.1142	—	1.06	0.3142	—
Activity + SO4 (mM acetate/g VS/day)	12.62	0.0018	D > R	0.46	0.5042	—
CH4 + SO4	15.39	0.0007	D < R	6.24	0.0204	6 < 12
CH4 − SO4	7.21	0.0135	D < R	7.88	0.0103	6 < 12