Photomicrographs of bacteria that precipitate iron and manganese
(scale bars are 10 micrometers)
Neutral Water
Gallionella ferruginea [braid-like] in red floc from neutral water
Leptothrix cholodnii [sausage-like] in red floc from neutral water
Leptothrix discophora holdfasts [doughnut-like], which are parts
of the bacteria that attach to rocks or microscope slides, like the fresh
rounded ones on this microscope slide left in neutral water riffle
Leptothrix discophora [rods] on oil-like film from neutral water
Leptothrix discophora dehydrated holdfasts [doughnut-like] within
hole on manganese-coated microscope slide in neutral water riffle
Leptothrix ochracea [drinking-straw like] in red floc from neutral
water
Siderocapsa sp. [globular] on fecal pellet in red floc from neutral
water
Siderococcus sp. [dot-like] in red floc from slightly salty, brackish
water
Siderocystis sp. [agglomerations] on dead alga in red floc from neutral
water
Toxothrix trichogenes [ladder-like] in red floc from neutral water
Acid Water
Thiobacillus-type [rods] in yellow floc from acid water
Leptothrix-type? [rods] on oil-like film from acid water
"Viewing
Techniques through a Microscope"
Contact: Norrie Robbins
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