Anaerobic microorganisms take over and, in the process, produce a lot of useless organic acids and amines (ammonia-like substances) which are smelly, contain unavailable nitrogen and, in some cases, are toxic to plants.
In addition, anaerobes produce hydrogen sulfide (aroma-like rotten eggs), cadaverine, and putrescine (other sources of offensive odors).
Therefore, nitrite-oxidizing bacteria as well as the other bacteria in this system are important for healthy marine ecosystems. 67(11):5273-5284 Nitrospira can live in marine or nonmarine habitats.
Aerobic bacteria need oxygen levels greater than five percent.
They are the preferred organisms, because they provide the most rapid and effective composting.
Of all these organisms, aerobic bacteria are the most important decomposers.
They are very abundant; there may be millions in a gram of soil or decaying organic matter.
However, these mixes were inexplicably ineffective so tests were done to analyze the bacterial content of aquaria water.
While bacteria from the genus Nitrobacter are nitrite-oxidizing organisms and could theoretically fill the nitrite-oxidizing niche, the tests indicated relatively high numbers of Nitrospira and no Nitrobacter bacteria at all.
They also excrete plant nutrients such as nitrogen, phosphorus, and magnesium.
When oxygen levels fall below five percent, the aerobes die and decomposition slows by as much as 90 percent.
Bacteria utilize carbon as a source of energy (to keep on eating) and nitrogen to build protein in their bodies (so they can grow and reproduce).
They obtain energy by oxidizing organic material, especially the carbon fraction.
Nitrospira are nitrite-oxidizing bacteria that are important in marine habitats.