Bonus Projects

Sources & Sinks: A Tale of Coastal Biogeochemistry - BONUS COCOA

Insights into the biogeochemistry work of the COCOA project: from the water column to the sediment, from the field to the lab. Secrets of the coastal filter and a life in aquatic sciences.
27.11.2017 11:07

New COCOA publication

Dana Hellemann

A new study from BONUS COCOA has lately been published:

Myself and co-workers measured the removal of riverine nitrate via the processes denitrification and anammox in the sandy and muddy sediments of the oligotrophic Öre Estuary at the Swedish coast of the Quark Strait, Northern Baltic Sea. Estuaries are generally assumed to be sinks of the land-derived, riverine load of nutrients and organic matter and thus hotspots of the "coastal filter". We found that the Öre Estuary gradually removes most of the riverine nitrate long after peak loading, after temporary "trapping" in phytoplankton biomass. Read the full story here:

Hellemann D, Tallberg P, Bartl I, Voss M, Hietanen S (2017) Denitrification in an oligotrophic estuary: a delayed sink for riverine nitrate. Marine Ecology Progress Series 583:63-80. http://www.int-res.com/articles/meps_oa/m583p063.pdf

ÖRE_3_2017
Happy sampling of the Öre Estuary with R/V Lotty from the Umeå Marine Science Centre, Norrbyn.


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