Consulta: creatorFacets:"Inagaki, Fumio"
Registros recuperados: 2
Data/hora: 09/06/2024 10:40:15

Presence of oxygen and aerobic communities from sea floor to basement in deep-sea sediments
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: D'Hondt, Steven; Inagaki, Fumio; Zarikian, Carlos Alvarez; Abrams, Lewis J.; Dubois, Nathalie; Engelhardt, Tim; Evans, Helen; Ferdelman, Timothy; Gribsholt, Britta; Harris, Robert N.; Hoppie, Bryce W.; Hyun, Jung-ho; Kallmeyer, Jens; Kim, Jinwook; Lynch, Jill E.; Mckinley, Claire C.; Mitsunobu, Satoshi; Morono, Yuki; Murray, Richard W.; Pockalny, Robert; Sauvage, Justine; Shimono, Takaya; Shiraishi, Fumito; Smith, David C.; Smith-duque, Christopher E.; Spivack, Arthur J.; Steinsbu, Bjorn Olav; Suzuki, Yohey; Szpak, Michal; Toffin, Laurent; Uramoto, Goichiro; Yamaguchi, Yasuhiko T.; Zhang, Guo-liang; Zhang, Xiao-hua; Ziebis, Wiebke.
The depth of oxygen penetration into marine sediments differs considerably from one region to another. In areas with high rates of microbial respiration, O2 penetrates only millimetres to centimetres into the sediments, but active anaerobic microbial communities are present in sediments hundreds of metres or more below the sea floor. In areas with low sedimentary respiration, O2 penetrates much deeper but the depth to which microbial communities persist was previously unknown. The sediments underlying the South Pacific Gyre exhibit extremely low areal rates of respiration. Here we show that, in this region, microbial cells and aerobic respiration persist through the entire sediment sequence to depths of at least 75 metres below sea floor. Based on the...
Tipo: Text
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00255/36658/35265.pdf

Evidence for Microbial Carbon and Sulfur Cycling in Deeply Buried Ridge Flank Basalt
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lever, Mark A.; Rouxel, Olivier; Alt, Jeffrey C.; Shimizu, Nobumichi; Ono, Shuhei; Coggon, Rosalind M.; Shanks, Wayne C., Iii; Lapham, Laura; Elvert, Marcus; Prieto-mollar, Xavier; Hinrichs, Kai-uwe; Inagaki, Fumio; Teske, Andreas.
Sediment-covered basalt on the flanks of mid-ocean ridges constitutes most of Earth's oceanic crust, but the composition and metabolic function of its microbial ecosystem are largely unknown. By drilling into 3.5-million-year-old subseafloor basalt, we demonstrated the presence of methane-and sulfur-cycling microbes on the eastern flank of the Juan de Fuca Ridge. Depth horizons with functional genes indicative of methane-cycling and sulfate-reducing microorganisms are enriched in solid-phase sulfur and total organic carbon, host delta C-13- and delta S-34-isotopic values with a biological imprint, and show clear signs of microbial activity when incubated in the laboratory. Downcore changes in carbon and sulfur cycling show discrete geochemical intervals...
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00176/28767/32146.pdf