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The hydrothermal vents are recognized as a type of chemosynthetic based ecosystems (CBE) where primary productivity is fuelled by chemical compounds as energy sources instead of light (chemoautotrophy). [28] Hydrothermal vent communities are able to sustain such vast amounts of life because vent organisms depend on chemosynthetic bacteria for food.
In hydrothermal vent communities, aerobic oxidation of methane is commonly found in endosymbiotic microbes of vent animals. [17] Anaerobic oxidation of methane (AOM) is typically coupled to reduction of sulfate or Fe and Mn as terminal electron acceptors as these are most plentiful at hydrothermal vents.
Seepage from hydrocarbon sources through faults towards the surface tends to be diffused through the overlying sediment, carbonate outcroppings, and hydrate deposits, so the corresponding hydrocarbon seep communities tend to be larger (a few hundred meters wide) than chemosynthetic communities found around the hydrothermal vents of the Eastern ...
These vents spew forth very large amounts of chemicals, which these bacteria can transform into energy. These bacteria can also grow free of a host and create mats of bacteria on the sea floor around hydrothermal vents, where they serve as food for other creatures. Bacteria are a key energy source in the food chain.
Pages in category "Organisms living on hydrothermal vents" The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes .
It is common in hydrothermal vent microbial communities [2] [3] Due to the lack of light in these environments this is predominant over photosynthesis. [4] Giant tube worms use bacteria in their trophosome to fix carbon dioxide (using hydrogen sulfide as their energy source) and produce sugars and amino acids. [5] Some reactions produce sulfur:
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Bacterial mats, [14] clams [26] and limpets settle on the hydrothermal vents, [21] which sustain chemosynthetic communities. [27] Sponges grow on the periphery of the vent areas. [2] "Dead zones" - accumulations of animal carcasses, which have also been found at other submarine hydrothermal systems on Earth - are found in the area. [25]