FN Archimer Export Format PT J TI Archaea in organic-lean and organic-rich marine subsurface sediments: an environmental gradient reflected in distinct phylogenetic lineages BT AF DURBIN, Alan M. TESKE, Andreas AS 1:1;2:2; FF 1:;2:; C1 Department of Ecology and Evolutionary Biology, University of California Irvine, Irvine, CA, USA Department of Marine Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA C2 UNIV CALIF IRVINE, USA UNIV N CAROLINA, USA IN DOAJ IF 3.941 TC 73 UR https://archimer.ifremer.fr/doc/00263/37444/35695.pdf LA English DT Article CR MD 147/MARCO-POLO1-IMAGESXII MD 153 / AUSFAIR BO Marion Dufresne DE ;archaea;marine sediments;oligotrophy;subsurface;phylogeny;uncultured archaea AB Examining the patterns of archaeal diversity in little-explored organic-lean marine subsurface sediments presents an opportunity to study the association of phylogenetic affiliation and habitat preference in uncultured marine Archaea. Here we have compiled and re-analyzed published archaeal 16S rRNA clone library datasets across a spectrum of sediment trophic states characterized by a wide range of terminal electron-accepting processes. Our results show that organic-lean marine sediments in deep marine basins and oligotrophic open ocean locations are inhabited by distinct lineages of archaea that are not found in the more frequently studied, organic-rich continental margin sediments. We hypothesize that different combinations of electron donor and acceptor concentrations along the organic-rich/organic-lean spectrum result in distinct archaeal communities, and propose an integrated classification of habitat characteristics and archaeal community structure. PY 2012 SO Frontiers In Microbiology SN 1664-302X VL 3 IS 168 UT 000208863600218 BP 1 EP 26 DI 10.3389/fmicb.2012.00168 ID 37444 ER EF