Keywords: Vertical-horizontal distribution
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Development of a novel in-sediment passive sampler for profiling orthophosphate and internal phosphorus release near the sediment–water interface in a eutrophic lake
The release of orthophosphate (PO₄) from lake sediments is now recognized as an important phosphorus source that maintains lake eutrophication. Therefore, quantifying PO₄ release is important for lake management. In this study, we developed a novel sampler to determine the PO₄ flux from lake sediment. The sampler was installed at the sediment–water interface (SWI) in a eutrophic lake. The vertical and horizontal PO₄ concentrations around the sampler were obtained. The obtained data enabled in situ quantification of the PO₄ fluxes at the SWI.
Kazuto Sano, Jumpei Ueda, Akira Hafuka, and Katsuki Kimura