TABLE 3.

Results of the ANOVA test on the total prokaryote, total coliform, and fecal coliform abundance (log transformed) in the study area^a

Variable and sourceb	SS	DF	MS	F	Significance (P)	% of explained variance
Total prokaryotes
Site	18.373	6	3.062	25.85	<0.0001	78.4
Depth	1.677	1	1.677	14.16	<0.0001	7.6
Site × depth	3.059	6	0.509	4.3	<0.0001	13.5
Residual	3.317	28	0.119			0.5
Total	26.426	41
Total coliforms
Site	127.470	6	21.245	24.9	<0.0001	78.4
Depth	3.620	1	3.620	4.24	NS	2.7
Site × depth	29.198	6	4.866	5.7	<0.001	18.4
Residual	23.890	28	0.853			0.5
Total	184.179	41
Fecal coliforms
Site	30.934	6	5.156	18.38	<0.0001	49.2
Depth	5.003	1	5.003	17.83	<0.0001	8.3
Site × depth	26.327	6	4.388	15.64	<0.0001	42.0
Residual	7.855	28	0.281			0.4
Total	70.119	41

^adf, degrees of freedom; SS, sum of squares; MS, mean square; Pseudo-F, statistic F; NS, not significant.

^bCochran's test results were as follows: total prokaryotes, C = 0.4569 (P < 0.05); total coliforms, C = 0.5744 (P < 0.01); and fecal coliforms, C = 0.6551 (P < 0.01).