Hydrogen Sulfide and Cyanobacteria

William J. Mason wmason at COMP.UARK.EDU
Fri Oct 30 08:23:18 EST 1998


What about bacteria such as:
Salmonella, Arizona, Edwardsiella and Proteus
Somespecies of these types are all capable of producing H2S; yet, I do not
know of their distribution in the soil.

Jeff Mason
University of Arkansas, Biological Sciences/Microbiology
wmason at comp.uark.edu

On Fri, 30 Oct 1998 aquastrat at red2000.com.mx wrote:

> As far as I knew, a salt water shrimp culture pond bottom’s natural brown
> color sometimes turns black  because the insoluble ferric form of iron
> becomes reduced to black ferrous form under anoxic conditions (caused by
> sedimentation of organic matter),  meaning that the black color was in the
> inorganic part of the substrate, then yesterday I had my hands full of what
> seemed to be a decomposing mass of cyanobacteria and it had the same hydrogen
> sulfide smell and black color than the apparently inorganic part of the soil.
> ¿Does the black color and hydrogen sulfide smell comes also from the
> decomposing cyanobacteria?. Some cyanobacteria use reduced sulfur compounds
> in their energetic metabolism, ¿Does this means that when they die they
> create a bigger problem deteriorating the bottom conditions because they
> increase the amount of hydrogen sulfide more than when a diatom bloom
> crashes? In my experience it is clear that oxidizing the black substrate
> (turning it over several times to expose it to air) returns the soil its
> naturally brown color but ¿Does this soil has more propensity to produce in
> the future hydrogen sulfide in larger quantities than before it experienced
> this problem?
> I thank you beforehand for your kind help.
> Mateo Avila
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