Aerobic Heterotrophic Bacteria Indigenous to p H 2.8 Acid Mine Water: Microscopic Examination of Acid Streamers

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Abstract
“Acid streamers” found in acid coal mine drainage consist of bacteria trapped within an extracellular fibrillar polymer network. Inorganic compounds also precipitate within the polymer network. Several bacteria which appear to be different and are presumed to be different species are associated in the slimy mass of the “acid streamers.” The “streamers” contain individual microcolonies or microcosms that can be recognized by a selective polysaccharide stain, which suggests that the slime streamer is a conglomeration of polymers produced by more than one species.