Welkom op het expertplatform!
Dit platform verschaft informatie en kennis omtrent de WL expertisedomeinen 'hydraulica en sediment', 'havens en waterwegen', 'waterbouwkundige constructies', 'waterbeheer' en 'kustbescherming' - gaande van WL medewerkers met hun expertise, het curriculum van deze instelling, tot publicaties, projecten, data (op termijn) en evenementen waarin het WL betrokken is.
Het WL onderschrijft het belang van "open access" voor de ontsluiting van haar onderzoeksresultaten. Lees er meer over in ons openaccessbeleid.
Ocean alkalinity destruction by anthropogenic seafloor disturbances generates a hidden CO2 emission
van de Velde, S.J.; Hylén, A.; Meysman, F.J.R. (2025). Ocean alkalinity destruction by anthropogenic seafloor disturbances generates a hidden CO2 emission. Science Advances 11(13): eadp9112. https://dx.doi.org/10.1126/sciadv.adp9112
In: Science Advances. AAAS: New York. ISSN 2375-2548; e-ISSN 2375-2548
|   |
| Trefwoord |
|
| Author keywords |
REACTIVE TRANSPORT;MARINE-SEDIMENTS;EARLY DIAGENESIS;CARBONATE DISSOLUTION;COASTAL WATERS;ORGANIC-MATTER;NORTH-SEA;MODEL;SHELF;BIOTURBATION |
| Auteurs | | Top |
- van de Velde, S.J.
- Hylén, A.
- Meysman, F.J.R.
|
|
|
| Abstract |
The seafloor is responsible for 40% of the alkalinity input to the ocean, thus contributing to the ocean’s capacity to sequester atmospheric CO2. Anthropogenic seafloor disturbances induced by mobile bottom-contact fishing and dredging influence this natural carbon sink, yet the human impact on the ocean’s alkalinity cycle remains poorly quantified. Model simulations show that the combined impact of mobile bottom-contact fishing (e.g., trawling) and dredging reduces natural alkalinity generation by 60 to 220 gigaequivalent year−1, which is equivalent to a reduction of the natural marine carbon sink by 2 to 8 teragrams CO2 year−1. Alkalinity destruction by anthropogenic seafloor disturbance hence generates a hidden CO2 emission, of which the impact is comparable to the estimated reduction of organic carbon burial by mobile bottom-contact fishing. Our analysis emphasizes that carbon accounting in marine systems should consider the anthropogenic impact on both the organic and inorganic carbon cycles. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
