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Algal-bacterial coupling in the Western Scheldt (The Netherlands) assessed through isotope labeling [Koppeling van primaire en bacteriële produktie in de Westerschelde: experiment met labeling met stabiele isotopen] Citation Van den Meersche K., Soetaert K. 2004: Algal-bacterial coupling in the Western Scheldt (The Netherlands) assessed through isotope labeling. Netherlands Institute of Ecology; Centre for Estuarine and Marine Ecology, Netherlands. Metadata available at http://mda.nioo.knaw.nl/imis.php?module=dataset&dasid=1224. https://marineinfo.org/id/dataset/1224 Availability: Unrestricted The data are freely available to anybody and may be used for any purpose. Usage acknowledgement may be required Description Carbon flows in a natural phytoplankton assemblage from the Western Scheldt estuary were followed by measuring changes in concentrations and stable isotope ratios in a 10-day period after addition of 13C to a batch experiment. more Water was collected from the euhaline reaches of the estuary, near Vlissingen, and incubated in a mesocosm setup. A phytoplankton bloom was initiated and followed up through the subsequent collapse. Coupling of algal and bacterial production was estimated from 13C-uptake in protist- and bacterial-specific polar lipid fatty acids (PLFA) with aid of a dynamic model. As expected, algal exudates turned out to be the dominant source for bacterial carbon production, showing a strong microbial loop. 60% of bacterial carbon production could be attributed to regenerated in situ primary production. Zooplankton showed a preference for phytoplankton material, but was able to switch to other food sources when the algal bloom collapsed. Scope Themes: Biology, Biology > Benthos, Biology > Invertebrates, Biology > Plants Keywords: Brackish water, Algae, Bacteria, Carbon 13, Isotopic labelling, Microbial loop, ANE, Netherlands, Westerschelde, , Bacteria, Copepoda Geographical coverage ANE, Netherlands, Westerschelde [Marine Regions] Temporal coverage 4 June 2004 - 14 June 2004 Parameters Alkalinity (pH) Ammonium (NH4+) Bicarbonate (HCO3-) Carbon (C) per mesozooplankton Count of mesozooplankton Dissolved organic carbon (DOC) Dissolved oxygen % saturation Free phosphate concentration (PO43-) Isotope %15N-NH4 Isotope 13C in phospholipid fatty acid Isotope 13C-DIC from filtrated water Isotope 13C-DOC from filtrated water Isotope Carbon (C) Isotope Nitrogen (N) Isotope N-NH4o/oo Isotope N-NO3o/oo Microzooplankton Molar ratio C:N Nitrate (NO3-) Nitrate (NO3-) + Nitrite (NO2-) Nitrite (NO2-) Nitrogen (N) per mesozooplankton Organic carbon (OC) Phospholipid-derived fatty acids (PLFAs) Phytoplankton Methodology Pigment concentration Salinity (titrimetric with silver nitrate) Silicate (SiO44-) Temperature in water Total nitrogen (N) Urea in seawater Zooplankton isotopic signature 13C Zooplankton isotopic signature 15N Phytoplankton: Microscopic cell count Dataset status: In Progress Data type: Data Data origin: Research: lab experiment Metadatarecord created: 2007-04-18 Information last updated: 2009-10-08 | ||||
