Articles | Volume 19, issue 3
https://doi.org/10.5194/bg-19-763-2022
https://doi.org/10.5194/bg-19-763-2022
Research article
 | 
09 Feb 2022
Research article |  | 09 Feb 2022

Estimation of the natural background of phosphate in a lowland river using tidal marsh sediment cores

Florian Lauryssen, Philippe Crombé, Tom Maris, Elliot Van Maldegem, Marijn Van de Broek, Stijn Temmerman, and Erik Smolders

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Latest update: 18 Apr 2025
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Short summary
Surface waters in lowland regions have a poor surface water quality, mainly due to excess nutrients like phosphate. Therefore, we wanted to know the phosphate levels without humans, also called the pre-industrial background. Phosphate binds strongly to sediment particles, suspended in the river water. In this research we used sediments deposited by a river as an archive for surface water phosphate back to 1800 CE. Pre-industrial phosphate levels were estimated at one-third of the modern levels.
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