Availability of ferric iron for microbial reduction in bottom sediments of the freshwater tidal potomac river.

Applied and Environmental Microbiology
D R Lovley, E J Phillips

Abstract

The distribution of Fe(III), its availability for microbial reduction, and factors controlling Fe(III) availability were investigated in sediments from a freshwater site in the Potomac River Estuary. Fe(III) reduction in sediments incubated under anaerobic conditions and depth profiles of oxalate-extractable Fe(III) indicated that Fe(III) reduction was limited to depths of 4 cm or less, with the most intense Fe(III) reduction in the top 1 cm. In incubations of the upper 4 cm of the sediments, Fe(III) reduction was as important as methane production as a pathway for anaerobic electron flow because of the high rates of Fe(III) reduction in the 0- to 0.5-cm interval. Most of the oxalate-extractable Fe(III) in the sediments was not reduced and persisted to a depth of at least 20 cm. The incomplete reduction was not the result of a lack of suitable electron donors. The oxalate-extractable Fe(III) that was preserved in the sediments was considered to be in a form other than amorphous Fe(III) oxyhydroxide, since synthetic amorphous Fe(III) oxyhydroxide, amorphous Fe(III) oxyhydroxide adsorbed onto clay, and amorphous Fe(III) oxyhydroxide saturated with adsorbed phosphate or fulvic acids were all readily reduced. Fe(3)O(4) and the mixe...Continue Reading

References

May 24, 1984·Nature·J C Walker
Apr 1, 1986·Applied and Environmental Microbiology·D R Lovley, E J Phillips
Dec 1, 1983·Environmental Science & Technology·S A CrosbyG E Millward

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Citations

Mar 4, 2000·Applied and Environmental Microbiology·E E RodenC J Mann
Mar 4, 2000·Applied and Environmental Microbiology·K Kashefi, D R Lovley
Aug 31, 2000·Applied and Environmental Microbiology·J R LloydD R Lovley
Mar 7, 2001·Applied and Environmental Microbiology·D Sobolev, E E Roden
Sep 26, 2001·Applied and Environmental Microbiology·F J CervantesJ A Field
Apr 23, 2002·Environmental Microbiology·Francisco J CervantesJim A Field
May 5, 2006·Applied and Environmental Microbiology·Qingzhong WuFrank E Löffler
Jan 16, 2007·International Journal of Systematic and Evolutionary Microbiology·Evgenya S ShelobolinaDerek R Lovley
May 3, 2007·Environmental Microbiology·Achim SchmalenbergerKirsten Küsel
Mar 6, 2008·Applied Microbiology and Biotechnology·Nobuo KakuKazuya Watanabe
May 7, 2009·FEMS Microbiology Ecology·Nidal Abu LabanRainer U Meckenstock
Feb 15, 2011·International Journal of Systematic and Evolutionary Microbiology·Svetlana A PecheritsynaViktoria A Shcherbakova
Sep 13, 2011·International Journal of Systematic and Evolutionary Microbiology·Tatyana N ZhilinaGeorgy A Zavarzin
May 28, 2013·Applied and Environmental Microbiology·Keitaro KudoSeigo Amachi
Jun 23, 2015·PloS One·Ashley R BrownJonathan R Lloyd
Sep 18, 2015·Ecology·Wendy H Yang, Daniel Liptzin
May 7, 2003·Applied and Environmental Microbiology·Qiang He, Robert A Sanford
Jan 15, 2009·Journal of Environmental Quality·Amy L Shober, J Thomas Sims
Mar 3, 2007·International Journal of Systematic and Evolutionary Microbiology·Kelly P NevinDerek R Lovley
Apr 19, 2013·Journal of the Royal Society, Interface·J M ByrneN D Telling
Apr 1, 2002·FEMS Microbiology Ecology·Kirsten KüselHarold L Drake
Jul 5, 2011·International Journal of Systematic and Evolutionary Microbiology·So-Jeong KimSung-Keun Rhee
Jul 24, 2014·International Journal of Systematic and Evolutionary Microbiology·Dan SunBruce E Logan
Dec 17, 2014·International Journal of Systematic and Evolutionary Microbiology·Xiang ZengZongze Shao
Mar 10, 2015·Applied and Environmental Microbiology·Howbeer MuhamadaliRoyston Goodacre
Nov 22, 2013·Microbes and Environments·Satoshi KawaichiYoshihiko Sako
Jan 1, 2014·FEMS Microbiology Ecology·Shungui ZhouLi Zhuang

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