TABLE 3.

Proportions of major phylogenic groups of bacteria found in clone libraries from anode samples

Bacterial group	Most closely related species	% in cell:
		3	6	7 (open-circuit control)
Flavobacterium-Cytophaga-Bacteroides	Cytophaga fermentans, Anaeroflexus maritimus	52	20	53
Epsilonproteobacteria	Arcobacter nitofigilis	6	54	20
Deltaproteobacteria	Desulfobotulus sapovorans, Desulfuromonas acetoxidans, Desulfovibrio desulfuricans	33	25	23
Gammaproteobacteria	Vibrio splendidus	9	1	3
Fusobacteria	Propionigenium modestum	-	-	1