FIG. 2.

Naphthalene biodegradation in microcosms containing well 36 groundwater and subsurface sediment from a location adjacent to well 36 in treatments (10°C) designed to favor aerobic metabolism (A), methanogenesis (B), nitrate reduction (C), sulfate reduction (D), manganese oxide reduction (E), and iron oxide reduction (F). ▴, data for viable treatments; •, data for poisoned controls. The symbols indicate the averages for triplicate microcosms; the error bars indicate one standard deviation.