Synonyms
Definition
Hot vent microbiology refers to the microbial diversity associated with underwater hot springs known as hydrothermal vents. Chemical analysis of hydrothermal fluids shows large amounts of reduced inorganic materials, including H2S, Mn2+, H2, NH4, and CO. The system is based on chemolithoautotrophy (nitrifying metal- and sulfur-oxidizing microorganisms and methanogens). Hydrothermal vents combine several extreme conditions including temperature (up to 380 °C), pressure (20 MPa at 2,000 m), and pH (plumes of pH 2.5), in the absence of sunlight, all of which determine that primary producers have to use chemical energy for CO2fixation. The temperature gradient from the surrounding water that is heated up to 300–400 °C by magma that pours out through cracks in the lithosphere to seawater, which remains around 2 °C, creates a very unstable environment. Chimney growth from mineral precipitation when hydrothermal fluids come into contact...
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 Springer-Verlag Berlin Heidelberg
About this entry
Cite this entry
Gomez, F. (2014). Hot Vent Microbiology. In: Amils, R., et al. Encyclopedia of Astrobiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27833-4_76-2
Download citation
DOI: https://doi.org/10.1007/978-3-642-27833-4_76-2
Received:
Accepted:
Published:
Publisher Name: Springer, Berlin, Heidelberg
Online ISBN: 978-3-642-27833-4
eBook Packages: Springer Reference Physics and AstronomyReference Module Physical and Materials ScienceReference Module Chemistry, Materials and Physics