scholarly journals A Compilation of the Stable Isotopic Compositions of Carbon, Nitrogen, and Sulfur in Soft Body Parts of Animals Collected from Deep-Sea Hydrothermal Vent and Methane Seep Fields: Variations in Energy Source and Importance of Subsurface Microbial Processes in the Sediment-Hosted Systems

2014 ◽  
pp. 105-129 ◽  
Author(s):  
Toshiro Yamanaka ◽  
Sho Shimamura ◽  
Hiromi Nagashio ◽  
Shosei Yamagami ◽  
Yuji Onishi ◽  
...  
Keyword(s):  
Energy Source ◽  
Deep Sea ◽  
Hydrothermal Vent ◽  
Microbial Processes ◽  
Body Parts ◽  
Methane Seep ◽  
Soft Body ◽  
Isotopic Compositions ◽  
Stable Isotopic

Stable isotopic compositions of hydrothermal vent organisms

1989 ◽  
Vol 102 (2) ◽  
pp. 257-263 ◽  
Author(s):  
C. L. Van Dover ◽  
B. Fry
Keyword(s):  
Hydrothermal Vent ◽  
Isotopic Compositions ◽  
Stable Isotopic

Sulphur isotopic compositions of deep-sea hydrothermal vent animals

Nature ◽  
1983 ◽  
Vol 306 (5938) ◽  
pp. 51-52 ◽  
Author(s):  
Brian Fry ◽  
Howard Gest ◽  
J. M. Hayes
Keyword(s):  
Deep Sea ◽  
Hydrothermal Vent ◽  
Isotopic Compositions

scholarly journals Identification of enriched hyperthermophilic microbial communities from a deep-sea hydrothermal vent chimney under electrolithoautotrophic culture conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Guillaume Pillot ◽  
Oulfat Amin Ali ◽  
Sylvain Davidson ◽  
Laetitia Shintu ◽  
Anne Godfroy ◽  
...  
Keyword(s):  
Energy Source ◽  
Deep Sea ◽  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
Sole Carbon Source ◽  
Culture Conditions ◽  
Microbial Colonization ◽  
Trophic Chain ◽  
Electrochemical System ◽  
Bacterial Groups

AbstractDeep-sea hydrothermal vents are extreme and complex ecosystems based on a trophic chain. We are still unsure of the identities of the first colonizers of these environments and their metabolism, but they are thought to be (hyper)thermophilic autotrophs. Here we investigate whether the electric potential observed across hydrothermal chimneys could serve as an energy source for these first colonizers. Experiments were performed in a two-chamber microbial electrochemical system inoculated with deep-sea hydrothermal chimney samples, with a cathode as sole electron donor, CO2 as sole carbon source, and nitrate, sulfate, or oxygen as electron acceptors. After a few days of culturing, all three experiments showed growth of electrotrophic biofilms consuming the electrons (directly or indirectly) and producing organic compounds including acetate, glycerol, and pyruvate. Within the biofilms, the only known autotroph species retrieved were members of Archaeoglobales. Various heterotrophic phyla also grew through trophic interactions, with Thermococcales growing in all three experiments as well as other bacterial groups specific to each electron acceptor. This electrotrophic metabolism as energy source driving initial microbial colonization of conductive hydrothermal chimneys is discussed.

Dissulfuribacter thermophilus gen. nov., sp. nov., a thermophilic, autotrophic, sulfur-disproportionating, deeply branching deltaproteobacterium from a deep-sea hydrothermal vent

2013 ◽  
Vol 63 (Pt_6) ◽  
pp. 1967-1971 ◽  
Author(s):  
A. I. Slobodkin ◽  
A.-L. Reysenbach ◽  
G. B. Slobodkina ◽  
T. V. Kolganova ◽  
N. A. Kostrikina ◽  
...  
Keyword(s):  
Energy Source ◽  
Deep Sea ◽  
Hydrothermal Vent ◽  
Elemental Sulfur ◽  
Phylogenetic Analyses ◽  
Spreading Center ◽  
Rrna Gene ◽  
Content Type ◽  
Physiological Properties ◽  
Ph Range

A thermophilic, anaerobic, chemolithoautotrophic bacterium (strain S69T) was isolated from a deep-sea hydrothermal vent chimney located on the Eastern Lau Spreading Center and Valu Fa Ridge, Pacific Ocean, at a depth of 1910 m using anoxic medium with elemental sulfur as the only energy source. Cells of strain S69T were Gram-negative short rods, 0.4–0.6 µm in diameter and 1.0–2.5 µm in length, motile with a single polar flagellum. The temperature range for growth was 28–70 °C, with an optimum at 61 °C. The pH range for growth was 5.6–7.9, with optimum growth at pH 6.8. Growth of strain S69T was observed at NaCl concentrations ranging from 0.9 to 5.0 %, with an optimum at 1.8–2.7 (w/v). Strain S69T grew anaerobically with elemental sulfur as an energy source and bicarbonate/CO2 as a carbon source. Elemental sulfur was disproportionated to sulfide and sulfate. Growth was enhanced in the presence of poorly crystalline Fe(III) oxide (ferrihydrite) as a sulfide-scavenging agent. Strain S69T was also able to grow by disproportionation of thiosulfate and sulfite. Sulfate was not used as an electron acceptor either with H2 or with organic electron donors. Analysis of the 16S rRNA gene sequence revealed that the isolate formed a distinct phylogenetic branch within the Deltaproteobacteria . On the basis of its physiological properties and results of phylogenetic analyses, strain S69T is considered to represent a novel species of a new genus, for which the name Dissulfuribacter thermophilus gen. nov., sp. nov. is proposed. The type strain of Dissulfuribacter thermophilus is S69T ( = DSM 25762T = VKM B-2760T).

ADVANCING TERRESTRIAL PALEOCLIMATE WITH A PROCESS-BASED UNDERSTANDING OF THE SEASONAL BIAS OF THE CLUMPED AND STABLE ISOTOPIC COMPOSITIONS OF SOIL CARBONATES

2020 ◽  
Author(s):  
Julia R. Kelson ◽  
◽  
Katharine W. Huntington ◽  
Daniel O. Breecker ◽  
Landon Burgener ◽  
...  
Keyword(s):  
Isotopic Compositions ◽  
Stable Isotopic ◽  
Soil Carbonates

scholarly journals Hydrogenimonas urashimensis sp. nov., a hydrogen-oxidizing chemolithoautotroph isolated from a deep-sea hydrothermal vent in the Southern Mariana Trough

2021 ◽  
Vol 44 (1) ◽  
pp. 126170
Author(s):  
Sayaka Mino ◽  
Taiki Shiotani ◽  
Satoshi Nakagawa ◽  
Ken Takai ◽  
Tomoo Sawabe
Keyword(s):  
Deep Sea ◽  
Hydrothermal Vent

scholarly journals Development of an Easy-to-Operate Underwater Raman System for Deep-Sea Cold Seep and Hydrothermal Vent In Situ Detection

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5090
Author(s):  
Qingsheng Liu ◽  
Jinjia Guo ◽  
Wangquan Ye ◽  
Kai Cheng ◽  
Fujun Qi ◽  
...  
Keyword(s):  
Deep Sea ◽  
Hydrothermal Vent ◽  
Methane Hydrate ◽  
Sulfur Cycle ◽  
Cold Seep ◽  
Remotely Operated Vehicle ◽  
Bacterial Mats ◽  
Optical Module ◽  
In Situ Detection

As a powerful in situ detection technique, Raman spectroscopy is becoming a popular underwater investigation method, especially in deep-sea research. In this paper, an easy-to-operate underwater Raman system with a compact design and competitive sensitivity is introduced. All the components, including the optical module and the electronic module, were packaged in an L362 × Φ172 mm titanium capsule with a weight of 20 kg in the air (about 12 kg in water). By optimising the laser coupling mode and focusing lens parameters, a competitive sensitivity was achieved with the detection limit of SO42− being 0.7 mmol/L. The first sea trial was carried out with the aid of a 3000 m grade remotely operated vehicle (ROV) “FCV3000” in October 2018. Over 20,000 spectra were captured from the targets interested, including methane hydrate, clamshell in the area of cold seep, and bacterial mats around a hydrothermal vent, with a maximum depth of 1038 m. A Raman peak at 2592 cm−1 was found in the methane hydrate spectra, which revealed the presence of hydrogen sulfide in the seeping gas. In addition, we also found sulfur in the bacterial mats, confirming the involvement of micro-organisms in the sulfur cycle in the hydrothermal field. It is expected that the system can be developed as a universal deep-sea survey and detection equipment in the near future.

scholarly journals Mg isotopic compositions of stony spherules from deep-sea sediments.

1992 ◽  
Vol 26 (1) ◽  
pp. 29-36 ◽  
Author(s):  
Keiji Misawa ◽  
Kazuo Yamakoshi ◽  
Noboru Nakamura
Keyword(s):  
Deep Sea ◽  
Isotopic Compositions ◽  
Deep Sea Sediments
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