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Microbial Colonization

Microbial colonization and turnover of organic matter on suspended matter in the Wadden Sea and biogeochemical interactions with the sediment and bulk water (DFG, 2001-2007).

This subproject investigates the spatio-temporal dynamics and aggregation processes of suspended matter and its composition, microbial colonization, and substrate turnover in the backbarrier tidal flats of the island Spiekeroog. This includes the analysis of the size structure of the suspended matter<s>,</s> as well as its biochemical and microscopic composition (planktonic and benthic algae, zooplankton, detritus, mineral particles). The composition of the associated bacterial community are analyzed with classical and molecular (16S rDNA clone libraries, DGGE, FISH) microbiological methods. In order to assess the microbial turnover of the suspended matter, we measure the biomass production of the associated bacteria and the concentration, release and turnover of amino acids and carbohydrates on the aggregated suspended matter. In addition to the field studies experiments in rolling tanks, which are able to simulate tidal cycles under controlled conditions, are carried out.

Individuals working in the project:

Andreas Lemke, Christine Beardsley, Thorsten Brinkhoff, Birgit Kuerzel, Rolf Weinert, Meinhard Simon.

Lemke, A., Lunau, M., Stone, J., Dellwig, O., Simon, M. 2009. Spatio-temporal dynamics of suspended matter properties and bacterial communities in the back-barrier tidal flat system of Spiekeroog Island. Ocean Dyn. 59/2: 277-290.

Stevens, H., Simon, M., Brinkhoff, T. 2009. Cultivable bacteria from bulk water, aggregates, and surface sediments of a tidal flat ecosystem. Ocean Dyn. 59/2: 291-309

Zhao, C., Brinkhoff, T., Burchardt, M., Simon M., Wittstock, G. 2009. Surface selection, adhesion, and retention behaviour of marine bacteria on synthetic organic surfaces using self-assembled monolayers and atomic force microscopy. Ocean Dyn. 59/2: 305-315.

Rink, B,.Martens, T., Fischer, D., Lemke, A., Grossart, H.P., Simon, M., Brinkhoff, T. 2008. Short-term dynamics of bacterial communities in a tidally affected coastal ecosystem. FEMS Microbiol. Ecol. 66: 306-319

Grossart, H.P., Simon, M. 2007. Interactions of planktonic algae and bacteria: Effects on algal growth and organic matter dynamics. Aquat. Microb. Ecol. 47: 163-176.

Dellwig, O., Beck, M., Lemke, A., Lunau, M. Schnetger, B., Brumsack, H.J. 2007. Non-conservative behaviour of molybdenum in coastal waters: Coupling geochemical, biological, and sedimentological processes. Geochim. Cosmochim. Acta 71 2745-2761

Rink, B., Seeberger, S., Martens, T., Duerselen, C., Simon, M., Brinkhoff, T. 2007. Effects of a phytoplankton bloom in a coastal ecosystem on the composition of bacterial communities. Aquat. Microb. Ecol. 48: 47-60.

Stevens, H., Brinkhoff, T., Rink, B, Vollmers, J., Simon, M. 2007. Diversity and abundance of gram-positive bacteria in a tidal flat ecosystem. Environ. Microb. 9: 1810–1822

Grossart, H.P., Czub, G., Simon, M. 2006. Algae-bacteria interactions and their effects on aggregation and organic matter flux in the sea. Environ. Microb. 8: 1074-1084.

Lunau, M., Lemke, A., Dellwig, O., Simon, M. 2006. Physical and biogeochemical controls of microaggregate dynamics in a tidally affected coastal ecosystem. Limnol. Oceanogr. 51: 847-859.

Stevens, H., Stuebner, M., Simon, M., Brinkhoff, T. 2005. Phylogeny of Proteobacteria and Bacteroidetes from oxic habitats of a tidal flat ecosystem. FEMS Microbiol. Ecol. 54: 351-365.

Bhaskar, P.V., Grossart, H.P., Bhosle, N.B., Simon, M. 2005. Production of macroaggregates from dissolved exopolymeric substances (EPS) of bacterial and diatom origin. FEMS Microbiol. Ecol. 53: 255-264.

Lunau, M., Lemke, A., Walther, K., Martens-Habbena, W., Simon, M. 2005. An improved method for counting bacteria in samples with high proportions of particle-associated cells by epifluorescence microscopy: Environ. Microbiol. 7: 961-968.

Stevens, H., Brinkhoff, T., Simon, M. 2005. Composition and seasonal dynamics of free-living, aggregate- and sediment surface-associated bacterial communities in the German Wadden Sea. Aquat. Microb. Ecol. 38: 15-30.

Grossart, H.P., Levold, F., Allgaier, M., Simon, M., Brinkhoff T. 2005. Marine diatom species harbor distinct bacterial communities. Environ. Microbiol. 7: 860-873.

Lunau, M., A. Sommer, A., Grossart, H.P., Simon. M. 2004. A new sampling device for microaggregates in turbid aquatic systems. Limnol. Oceanogr. Methods 2: 387-397.

Grossart, H.P., Brinkhoff, T., Martens, T., Duerselen, C., Liebezeit, G., Simon, M. 2004. Tidal dynamics of dissolved and particulate matter and bacteria in the German Wadden Sea in spring and fall. Limnol. Oceanogr. 49: 2212-2222.

Selje, N., Simon, M., Brinkhoff, T. 2004. A newly discovered Roseobacter cluster in temperate and polar oceans. Nature 427: 445-448.

Simon, M., Lunau, M., Brinkhoff, T., Stevens, T., Rink, B., Duerselen, C., Grossart, H.P. 2003. Tidal and seasonal variations in dynamics of microaggregates and associated bacterial communities in the German Wadden Sea. Berichte Forschungszentrum Terramare 12: 105-108.

Rink, B., Lunau, M., Seeberger, S., Stevens, H., Brinkhoff, T., Grossart, H.P., Simon, M. 2003. Diversity patterns of aggregate-associated and free-living bacterial communities in the German Wadden Sea. Berichte Forschungszentrum Terramare 12: 96-98.

Lunau, M., Rink, B., Grossart, H.P., Simon, M. 2003. How to sample marine microaggregates in shallow and turbid environments? - Problems and solutions. Berichte Forschungszentrum Terramare 12: 85-88.

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