Articles | Volume 21, issue 10
Research article
28 May 2024
Research article |  | 28 May 2024

Quantification and mitigation of bottom-trawling impacts on sedimentary organic carbon stocks in the North Sea

Lucas Porz, Wenyan Zhang, Nils Christiansen, Jan Kossack, Ute Daewel, and Corinna Schrum

Related authors

Paleogeographic numerical modelling of marginal seas for the Holocene – an exemplary study of the Baltic Sea
Jakub Miluch, Wenyan Zhang, Jan Harff, Andreas Groh, Peter Arlinghaus, and Celine Denker
EGUsphere,,, 2024
Short summary
Benthos as a key driver of morphological change in coastal regions
Peter Arlinghaus, Corinna Schrum, Ingrid Kröncke, and Wenyan Zhang
Earth Surf. Dynam., 12, 537–558,,, 2024
Short summary
Source-to-Sink Pathways of Dissolved Organic Carbon in the River-Estuary-Ocean Continuum: A Modeling Investigation
Jialing Yao, Zhi Chen, Jianzhong Ge, and Wenyan Zhang
Biogeosciences Discuss.,,, 2024
Preprint under review for BG
Short summary
Compound flood events: analysing the joint occurrence of extreme river discharge events and storm surges in northern and central Europe
Philipp Heinrich, Stefan Hagemann, Ralf Weisse, Corinna Schrum, Ute Daewel, and Lidia Gaslikova
Nat. Hazards Earth Syst. Sci., 23, 1967–1985,,, 2023
Short summary
The 3D biogeochemical marine mercury cycling model MERCY v2.0 – linking atmospheric Hg to methylmercury in fish
Johannes Bieser, David J. Amptmeijer, Ute Daewel, Joachim Kuss, Anne L. Soerensen, and Corinna Schrum
Geosci. Model Dev., 16, 2649–2688,,, 2023
Short summary

Related subject area

Biogeochemistry: Coastal Ocean
Variable contribution of wastewater treatment plant effluents to downstream nitrous oxide concentrations and emissions
Weiyi Tang, Jeff Talbott, Timothy Jones, and Bess B. Ward
Biogeosciences, 21, 3239–3250,,, 2024
Short summary
Distribution of nutrients and dissolved organic matter in a eutrophic equatorial estuary: the Johor River and the East Johor Strait
Amanda Y. L. Cheong, Kogila Vani Annammala, Ee Ling Yong, Yongli Zhou, Robert S. Nichols, and Patrick Martin
Biogeosciences, 21, 2955–2971,,, 2024
Short summary
Investigating the effect of silicate- and calcium-based ocean alkalinity enhancement on diatom silicification
Aaron Ferderer, Kai G. Schulz, Ulf Riebesell, Kirralee G. Baker, Zanna Chase, and Lennart T. Bach
Biogeosciences, 21, 2777–2794,,, 2024
Short summary
Ocean alkalinity enhancement using sodium carbonate salts does not lead to measurable changes in Fe dynamics in a mesocosm experiment
David González-Santana, María Segovia, Melchor González-Dávila, Librada Ramírez, Aridane G. González, Leonardo J. Pozzo-Pirotta, Veronica Arnone, Victor Vázquez, Ulf Riebesell, and J. Magdalena Santana-Casiano
Biogeosciences, 21, 2705–2715,,, 2024
Short summary
Influence of ocean alkalinity enhancement with olivine or steel slag on a coastal plankton community in Tasmania
Jiaying A. Guo, Robert F. Strzepek, Kerrie M. Swadling, Ashley T. Townsend, and Lennart T. Bach
Biogeosciences, 21, 2335–2354,,, 2024
Short summary

Cited articles

Akhtar, N., Geyer, B., and Schrum, C.: Impacts of accelerating deployment of offshore windfarms on near-surface climate, Sci. Rep.-UK, 12, 18307,, 2022. 
Arlinghaus, P., Zhang, W., and Schrum, C.: Small-scale benthic faunal activities may lead to large-scale morphological change- A model based assessment, Front. Mar. Sci., 9, 1011760,, 2022. 
Atwood, T. B., Romanou, A., DeVries, T., Lerner, P. E., Mayorga, J. S., Bradley, D., Cabral, R. B., Schmidt, G. A., and Sala, E.: Atmospheric CO2 emissions and ocean acidification from bottom-trawling, Front. Mar. Sci., 10, 1125137,, 2024. 
Beaulieu, S.: Accumulation and Fate of Phytodetritus on the Sea Floor, in: Oceanography and Marine Biology: An Annual Review, Volume 40, edited by: Gibson, R., Barnes, M., an Atkinson, R., CRC Press, London, 171–232,, 2002. 
Short summary
Seafloor sediments store a large amount of carbon, helping to naturally regulate Earth's climate. If disturbed, some sediment particles can turn into CO2, but this effect is not well understood. Using computer simulations, we found that bottom-contacting fishing gears release about 1 million tons of CO2 per year in the North Sea, one of the most heavily fished regions globally. We show how protecting certain areas could reduce these emissions while also benefitting seafloor-living animals.
Final-revised paper