Publication Date:
2021-11-23
Description:
The AL561 cruise was conducted in the framework of the project APOC (“Anthropogenic
impacts on Particulate Organic Carbon cycling in the North Sea”). This collaborative project
between GEOMAR, AWI, HEREON, UHH, and BUND is to understand how particulate organic
carbon (POC) cycling contributes to carbon sequestration in the North Sea and how this
ecosystem service is compromised and interlinked with global change and a range of human
pressures include fisheries (pelagic fisheries, bottom trawling), resource extraction (sand
mining), sediment management (dredging and disposal of dredged sediments) and
eutrophication. The main aim of the sampling activity during AL561 cruise was to recover
undisturbed sediment from high accumulation sites in the Skagerrak/Kattegat and to subsample
sediment/porewater at high resolution in order to investigate sedimentation transport processes,
origin of sediment/POC and mineralization processes over the last 100- 200 years. Moreover, the
actual processes of sedimentation and POC degradation in the water column and benthic layer
will be addressed by sampling with CTD and Lander devices. In total 9 hydroacoustic surveys
(59 profiles), 4 Gravity Corer, 7 Multicorer, 3 Lander and 4 CTD stations were successfully
conducted during the AL561 cruise.
Type:
Report
,
NonPeerReviewed
Format:
text
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