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A seasonal study of particulate organic matter composition and quality along an offshore transect in the southern North Sea
Le Guitton, M.; Soetaert, K.; Sinninghe Damsté, J.S.; Middelburg, J.J. (2017). A seasonal study of particulate organic matter composition and quality along an offshore transect in the southern North Sea. Est., Coast. and Shelf Sci. 188: 1-11. https://dx.doi.org/10.1016/j.ecss.2017.02.002
In: Estuarine, Coastal and Shelf Science. Academic Press: London; New York. ISSN 0272-7714; e-ISSN 1096-0015, more
Peer reviewed article  

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Author keywords
    Particulate organic matter; Biogeochemistry; Biomarkers; Seasonal variations; OM quality; North Sea

Authors  Top 
  • Le Guitton, M., more
  • Soetaert, K., more
  • Sinninghe Damsté, J.S., more
  • Middelburg, J.J., more

Abstract
    We investigated temporal differences in particulate organic matter (POM) composition and quality in thewater column and sediment at three stations along a transect from the coast via Oyster Grounds toDogger Bank within the southern North Sea, using a multiproxy approach covering a wide spectrum oforganic matter (OM) degradation states. Results of pigments and phospholipid-derived fatty acidsshowed distinct OM composition and quality differences in these stations, as well as seasonal variations.Major events, such as a late fall bloom at Dogger Bank and a spring bloom at Oyster Grounds and theCoastal Station were highlighted and the semi-depositional status of Oyster Grounds was confirmed. TheOM composition and quality were relatively constant in the upper 10 cm of the sediment at all stations.Finally, this study highlights the importance of lateral and vertical transport processes in seasonal variationsin the biogeochemical carbon cycle in this area and the intense pre-depositional processingbefore eventual burial in coastal settings.

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