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.
21.09.2017 19:28

New COCOA publications out!

Two new studies from BONUS COCOA have lately been published:


Mari Joensuu and co-authors investigated the erodibility potential of coastal sediments and identified regulating key factors of sediment resuspension. The study took place at the South-Western Finnish Archipelago coast, which offers a divers habitat of different sediment types. Measurements were done with a core based erosion device (EROMES) at the Tväminne Zoological Station. The full study and all interesting outcomes can be found here:

Joensuu M, Pilditch AC, Harris R, Hietanen S, Pettersson H, Norkko A (2017) Sediment properties, biota, and local habitat structure explain variation in the erodibility of coastal sediments. Limnology and Oceanography, doi:10.1002/lno.10622.

Mari
Mari and the EROMES device; during field work usually to be found in TZS´s climate controlled basement.



Eero Asmala and co-authors estimated the filter function of Baltic Sea coastal sediments for the elements nitrogen (N) and phosphorus (P), i.e. they calculated how much N and P is permanently removed from the coastal Baltic water column via benthic denitrification and burial, respectively. For this, they compiled and analyzed published removal rates of N and P from around the Baltic Sea coastline and could, for instance, identify key environmental factors for the regulation of N and P in the coastal filter. For more on this and the main outcome (no spoiler here) please look at:

Asmala E, Carstensen J, Conley DJ, Slomp CP, Stadmark J, Voss M (2017) Efficiency of the coastal filter: Nitrogen and phosphorus removal in the Baltic Sea. Limnology and Oceanography.doi:10.1002/lno.10644

Eero
How efficient is the coastal filter for N and P? Eero and colleagues dug through a lot of published literature.

Excellent Baltic Sea must-reads for the long  autumn evenings!

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