R
R. John Parkes
Researcher at Cardiff University
Publications - 56
Citations - 5849
R. John Parkes is an academic researcher from Cardiff University. The author has contributed to research in topics: Methanogenesis & Anaerobic oxidation of methane. The author has an hindex of 38, co-authored 56 publications receiving 5455 citations. Previous affiliations of R. John Parkes include Ocean Drilling Program & University of Bristol.
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Journal ArticleDOI
Distributions of Microbial Activities in Deep Subseafloor Sediments
Steven D'Hondt,Bo Barker Jørgensen,D Jay Miller,Anja Batzke,Ruth E. Blake,Barry Andrew Cragg,Heribert Cypionka,Gerald R. Dickens,Timothy G. Ferdelman,Kai-Uwe Hinrichs,Nils G. Holm,Richard Mitterer,Arthur J Spivack,Guizhi Wang,Barbara A. Bekins,Bert Engelen,Kathryn Ford,Glen Gettemy,Scott Rutherford,Henrik Sass,C Gregory Skilbeck,Ivano W. Aiello,Gilles Guèrin,Christopher H. House,Fumio Inagaki,Patrick Meister,Thomas Naehr,Sachiko Niitsuma,R. John Parkes,Axel Schippers,David C. Smith,Andreas P Teske,Juergen Wiegel,Christian Naranjo Padilla,Juana Luz Solis Acosta +34 more
TL;DR: Diverse microbial communities and numerous energy-yielding activities occur in deeply buried sediments of the eastern Pacific Ocean and these sedimentary communities may supply dissolved electron donors and nutrients to the underlying crustal biosphere.
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Recent studies on bacterial populations and processes in subseafloor sediments: A review
TL;DR: The authors showed that in the presence of readily degradable organic substrates, actively growing bacteria can move faster than sediment deposition; hence, these bacteria are not necessarily trapped and buried.
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The Cellular Fatty Acids of the Sulphate-reducing Bacteria, Desulfobacter sp., Desulfobulbus sp. and Desulfovibrio desulfuricans
James Taylor,R. John Parkes +1 more
TL;DR: The cellular fatty acids of Desulfobulbus sp.
Journal ArticleDOI
Deep marine biosphere fuelled by increasing organic matter availability during burial and heating
TL;DR: The authors found that pore-water acetate concentration at two sites in the Atlantic Ocean increased at depths below about 150 m and was associated with a significant stimulation in bacterial activity, which may explain the continued presence of active bacterial populations in deep sediments that are over 10 million years old.
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Prokaryotic biodiversity and activity in the deep subseafloor biosphere.
TL;DR: It is further possible that heterotrophy may be the most important mode of metabolism in subsurface sediments and heterotrophic microorganisms could dominate the uncultured prokaryotic population.