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The influence of ultramafic rocks on microbial communities at the Logatchev hydrothermal field, located 15 degrees N on the Mid-Atlantic Ridge.
The ultramafic-hosted Logatchev hydrothermal field (LHF) on the Mid-Atlantic Ridge is characterized by high hydrogen and methane contents in the subseafloor, which support a specialized microbialExpand
The globally widespread genus Sulfurimonas: versatile energy metabolisms and adaptations to redox clines
Sulfurimonas’ versatile energy metabolisms are summarized and their physiological properties to their global distribution are linked. Expand
Microbial CO(2) fixation and sulfur cycling associated with low-temperature emissions at the Lilliput hydrothermal field, southern Mid-Atlantic Ridge (9 degrees S).
The absence of thermophilic and hyperthermophilic prokaryotes in emissions supports the argument against the presence of a hot subsurface at Lilliput, as is typically suggested for diffuse emissions from areas of high-temperature venting. Expand
Linking geology, fluid chemistry, and microbial activity of basalt- and ultramafic-hosted deep-sea hydrothermal vent environments.
Hydrothermal fluids passing through basaltic rocks along mid-ocean ridges are known to be enriched in sulfide, while those circulating through ultramafic mantle rocks are typically elevated in hydrogen, which suggests that more complex features may play a role for determining which energy source is preferably used in chemically distinct hydrothermal vent biotopes. Expand
Short-term microbial and physico-chemical variability in low-temperature hydrothermal fluids near 5 degrees S on the Mid-Atlantic Ridge.
This study examines the representativeness of low-temperature hydrothermal fluid samples with respect to their chemical and microbiological characteristics and suggests that the observed variations in fluid chemical and microbial compositions are related to short-term fluid variability due to dynamic subseafloor fluid mixing. Expand
Fe–Si-oxyhydroxide deposits at a slow-spreading centre with thickened oceanic crust: The Lilliput hydrothermal field (9°33′S, Mid-Atlantic Ridge)
Diffuse and focused low-temperature fluids emanate at 9°33′S (Mid-Atlantic Ridge) and precipitate Fe–Sioxyhydroxides that form chimneys, mounds and flat-lying deposits. This extensive vent field,Expand
In situ chemistry and microbial community compositions in five deep-sea hydrothermal fluid samples from Irina II in the Logatchev field.
Intriguingly, bacterial community compositions of some time series samples from the same spot were significantly more similar to a sample collected 20 cm away than to each other, providing first hints that single hydrothermal fluid samples collected on a small spatial scale may also reflect unrecognized temporal variability. Expand
Geochemical constraints on the diversity and activity of H2 -oxidizing microorganisms in diffuse hydrothermal fluids from a basalt- and an ultramafic-hosted vent.
The influence of fluid chemistry on microbial diversity and activity by sampling diffuse fluids emanating through mussel beds at two contrasting hydrothermal vents is examined, and it is concluded that the factors contributing toward differences in the Diversity and activity of H(2) oxidizers at these sites include H( 2) and O(2), availability. Expand
Young volcanism and related hydrothermal activity at 5°S on the slow‐spreading southern Mid‐Atlantic Ridge
The effect of volcanic activity on submarine hydrothermal systems has been well documented along fast- and intermediate-spreading centers but not from slow-spreading ridges. Indeed, volcanicExpand