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A microbial mat is a multi-layered sheet or biofilm of microbial colonies, composed of mainly bacteria and/or archaea. Microbial mats grow at interfaces between different types of material, mostly on submerged or moist surfaces, but a few survive in deserts. [1] A few are found as endosymbionts of animals.
Individual studies on microbial mat-induced sedimentary structures are summarized and illustrated in several recent books, including Atlas of microbial mat features preserved in the siliciclastic rock record [18] and Microbial Mats in Siliciclastic Depositional Systems Through Time. [19]
Phototrophic biofilms and microbial mats have been described in extreme environments like thermal springs, [3] hyper saline ponds, [4] desert soil crusts, and in lake ice covers in Antarctica. The 3.4-billion-year fossil record of benthic phototrophic communities, such as microbial mats and stromatolites , indicates that these associations ...
Not unlike your bacteria-covered bath mat, your dish drying mat is totally gross. It’s true. It’s true. Just because your dishes are freshly-washed doesn’t mean bacteria isn’t lurking.
Microbial mat – Multi-layered sheet of microorganisms; Phage therapy – Therapeutic use of bacteriophages to treat bacterial infections; Phototrophic biofilm – Microbial communities including microorganisms which use light as their energy source; Stromatolite – Layered sedimentary structure formed by the growth of bacteria or algae
The organic component is an elaborate microbial mat where different communities of microorganisms interact according to different metabolisms and create a micro-niche where oxygenic and anoxygenic phototrophic organisms coexist: nitrogen fixers, sulfur reducers, methaneotrophs, methanogens, iron oxidizers, and an infinity of heterotrophic ...
These microbial mats created a barrier between the water and the sediment underneath, which was less water-logged than modern sea-floors, and almost completely anoxic (lacking in oxygen). As a result, the substrate was inhabited by sulfate-reducing bacteria , whose emissions of hydrogen sulfide (H 2 S) made the substrate toxic to most other ...
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