anoxic

Examples of anoxic in the following topics:

• Anoxic Hydrocarbon Oxidation

  • Anaerobic oxidation of methane (AOM) is a microbial process that occurs in anoxic marine sediments.
  • Describe the process of anoxic hydrocarbon oxidation in regards to marine environments

• The Role of Prokaryotes in Ecosystems

  • In aqueous environments and their anoxic sediments, there is another carbon cycle taking place.
  • In anoxic sediments, prokaryotes, mostly archaea, produce methane (CH4).

• Iron Oxidation

  • These micro-organisms (for example Gallionella ferruginea or Leptothrix ochracea) live at the oxic-anoxic interfaces and are microaerophiles.

• Magnetosomes

  • One type of magnetotactic bacterium present at the oxic-anoxic transition zone (OATZ) of the southern basin of the Pettaquamscutt River Estuary, Narragansett, Rhode Island is known to produce both iron oxide and iron sulfide magnetosomes.

• Mangroves

  • They are adapted to the low oxygen (anoxic) conditions of waterlogged mud.

• Estuaries & Marshes

  • This reduces the levels of oxygen within the sediment often resulting in partially anoxic conditions, which can be further exacerbated by limited water flux.
  • Plant species diversity is relatively low, since the flora must be tolerant of salt, complete or partial submersion, and anoxic mud substrate.

• Hydrogen Oxidation

  • Hydrogen-oxidizing organisms, such as Cupriavidus necator (formerly Ralstonia eutropha), often inhabit oxic-anoxic interfaces in nature to take advantage of the hydrogen produced by anaerobic fermentative organisms while still maintaining a supply of oxygen.

• Wetland Soils

  • For example, if a system already has plenty of electrons (anoxic, organic-rich shale) it is reduced and will likely donate electrons to a part of the system that has a low concentration of electrons, or an oxidized environment, to equilibrate to the chemical gradient.

• Cyanobacteria

  • Heterocysts may also form under the appropriate environmental conditions (anoxic) when fixed nitrogen is scarce.

• Anoxygenic Photosynthetic Bacteria

  • Purple sulfur bacteria are generally found in illuminated anoxic zones of lakes and other aquatic habitats where hydrogen sulfide accumulates.