Vertical stratificaction of bacterial communities driven by multiple environmental factors in the dark waters off the Galician coast (NW Spain)

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URI: http://hdl.handle.net/10508/10609
ISSN: 0967-0637
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Authors
Dobal-Amador, V. (Vladimir); Nieto-Cid, M. (Mar); Guerrero-Feijóo, E. (Elisa); Hernando-Morales, V. (Víctor); Teira, E. (Eva); Varela, M.M. (Marta María)
Date
2016-04-22
Type
research article
Keywords
Bacteria
Community composition
Fluorescent in situ hybridization
Automated Ribosomal Intergenic Spacer
Analysis (ARISA)
DOM
Deep waters
NW Iberian margin
Abstract
The processesmediatedbymicrobialplanktoniccommunitiesoccuralongtheentirewatercolumn,yet the microbialactivityandcompositionhavebeenstudiedmainlyinsurfacewaters.Thisresearchex- amined theverticalvariationinbacterialabundance,activityandcommunitycompositionandstructure from surfacedownto5000mdepthfollowingalongitudinaltransectofftheGaliciancoast(NWIberian margin, from43°N, 9°W to43°N, 15°W). Communityactivityandcompositionchangedwithdepth.The leucine incorporationratesdecreasedfromtheeuphoticlayertothebathypelagicwatersbythreeorders of magnitude,whereasprokaryoticabundancedecreasedonlybyoneorderofmagnitude.Therelative abundance ofSAR11and Alteromonas, determined bycatalyzedreporteddeposition fluorescenceinsitu hybridization(CARD-FISH),decreasedwithdepth.Meanwhile,thecontributionofSAR202andSAR324 wassignificantly higherinthedeeperlayers(i.e.NEADW,NorthEastAtlanticDeepWaterandLDW, LowerDeepWater)thanintheeuphoticzone.Bacterialcommunitystructure,assessedbyAutomated Ribosomal ...

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Atribución-NoComercial-SinDerivadas 3.0 España
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España