Theme 1 & 2
Program 3080

Biogeochemical cycling of organic matter in coastal marine sediments
Program coordinator(s): Prof. dr. ir. A. J. M. Stams
Theme(s): 1
Funding date: 21 June 2010

This study focuses on the role of micro-organisms in the carbon cycle in near-shore, marine sediments. The composition of organic material in near-shore marine sediments is mainly determined by primary production, inflow from rivers and remineralization. Various organisms are involved in the remineralization of organic material under anoxic conditions. Fermentation bacteria convert oligomeres into various organic products. Further conversion by secondary fermenters, sulfate reducers, acetic-acid producers and methane producers results in carbon dioxide, methane and hydrogen sulfide as final products. Micro-organisms are therefore closely involved in the biogeochemical cycles. Despite their crucial role in the global carbon cycle, the huge diversity, metabolic capacity and specific interactions of micro-organisms have largely been neglected. The present study focuses in particular on the micro-organisms involved in remineralizing volatile fatty acids (C2-C4) and C-1 compounds.

This program contains the following projects:
3081: Microbial interactions in marine anoxic sediments: competition or teamwork?
3082: Biogeochemical cycling of organic matter in coastal marine sediments: Intact

Moore, E.K.; Hopmans, E.C.; Rijpstra, W.I.C.; Sánchez-Andrea, I.; Villanueva, L.; Wienk, H.; Schoutsen, F; Stams, A.J.M.; Sinninghe Damsté, J.S. (2015). Lysine and novel hydroxylysine lipids in soil bacteria: amino acid membrane lipid response to temperature and pH in Pseudopedobacter saltans.. Front. Microbiol.6: 637-
Darwin Center authors: Hopmans E. C., Moore E.K., Sinninghe Damsté J. S., Stams A. J. M., Villanueva L.