Zooplankton impact on lipid biomarkers in water column vs. surface sediments of the stratified Eastern Gotland Basin (Central Baltic Sea)

PloS One
Anna K WittenbornVolker Thiel

Abstract

Sediments from stratified marine environments often show an enhanced preservation of organic matter (OM) which is attributed to the limitation, or absence, of oxygen in the bottom waters and surface sediments. Yet there is still a limited knowledge about the changes that the associated biomarker signals undergo in the different parts of a stratified environment, and as to which extent the situation in the productive upper parts of the water column is eventually reflected in the sedimentary record. To better understand these processes we studied particulate matter samples from the stratified, partly anoxic Eastern Gotland Basin (EGB, Central Baltic Sea) during a strong cyanobacterial bloom in August 2016. Endmember samples representing the main biomass producers within the phytoplankton (cyanobacteria) and mesozooplankton (copepods) were obtained from different levels of the water column. Major extractable lipids (fatty acids, n-alcohols, sterols, and selected hydrocarbons) were analysed from the same materials and compared to samples cored from the underlying surface sediments (0-12 cm). Given the annually recurring phenomenon of cyanobacterial blooms we anticipated to find a considerable lipid footprint of the major primary pr...Continue Reading

References

Jun 9, 1967·Science·G Eglinton, R J Hamilton
Jan 22, 2003·Applied Microbiology and Biotechnology·J K Volkman
Mar 27, 2015·Life·Dmitry A Los, Kirill S Mironov
Mar 15, 2016·Frontiers in Plant Science·Sami J TaipaleElina Peltomaa
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Methods Mentioned

BETA
light microscopy
column chromatography

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