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Research Themes > Biogeochemistry of trace metals in marine environments

Biogeochemistry of Trace Metals in Marine Environments

        As part of a large EU-funded Marie Curie Early Stage Research training (EST) programme, we are working with the Universities of Southampton, Bristol and Leeds to understand how microbial interactions with trace elements, especially iron, control key biogeochemical processes. Twelve fellows across the four collaborating universities, are studying microbiological (bacterial, archaeal and algal) interactions with trace elements in diverse aquatic systems ranging from marine to ground waters and from glaciers to sediment pore-waters. Whilst the environments and time-scales considered vary greatly, the underlying chemistry of the trace elements applies to all of these systems. The fundamental importance of such research is founded in the absolute metabolic requirements of microbes for certain trace elements and the direct and indirect impact of micro-organisms on the cycling of trace elements; consequently, microorganisms are central to our understanding of many key environmental processes from primary production in marine surface-waters to chemoautotrophy in both marine and terrestrial settings.

Recent Publications

Handley KM, Boothman C, Mills RA, Pancost, R.D., Lloyd J.R. (2010) Functional diversity of bacteria in a ferruginous hydrothermal sediment ISME JOURNAL 4 1193-1205
Muller, M., K. M. Handley, J. Lloyd, R. D. Pancost and R. A. Mills (2010) Biogeochemical controls on microbial diversity in seafloor sulphidic sediments. Geobiology 8 309–326 DOI: 10.1111/j.1472-4669.2010.00242.x
Macaskie, L.E., I.P. Mikheenko, P. Yong, K. Deplanche, A.J. Murray, M. Paterson-Beedle, V.S. Coker, C.I. Pearce, R. Cutting, R.A.D. Pattrick, D. Vaughan, G. van der Laan, J.R. Lloyd (2010) Today's wastes, tomorrow's materials for environmental protection. Hydrometallurgy 104 483–487
Aquilina, A., N.J. Knab, K. Knittel, G. Kaur, A. Geissler, S.P. Kelly, H. Fossing, C.S. Boot, R.J. Parkes, R.A. Mills, A. Boetius, J.R. Lloyd and R.D. Pancost (2010), Biomarker indicators for anaerobic oxidizers of methane in brackish-marine sediments with diffusive methane fluxes. Organic Geochemistry 41 414-426 doi:10.1016/j.orggeochem.2009.09.009
Belzano, S., Statham, P.J., Pancost, R.D. and Lloyd, J.R. (2009) Role of microbial populations in the release of reduced iron to the water column from marine aggregates. Aquatic Microbial Ecology 54 291-303
Handley, K.M., Hery, M. and Lloyd, J.R (2009) Redox cycling of arsenic by the hydrothermal marine bacterium Marinobacter santoriniensis. Environmental Microbiology 11 1601-1611
Handley, K.M., Hery, M. and Lloyd, J.R. (2009) Marinobacter santoriniensissp. nov., a novel arsenate-respiring and arsenite-oxidizing bacterium isolated from hydrothermal sediment. International Journal of Systematic and Evolutionary Microbiology 59(Pt 4): 886-92

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