Cieśla Maksymilian, Gruca-Rokosz Renata
Department of Environmental and Chemistry Engineering, Faculty of Civil and Environmental Engineering and Architecture, Rzeszów University of Technology, Al. Powstańców Warszawy 6, Rzeszów, 35-959, Poland.
Sci Rep. 2024 Oct 22;14(1):24924. doi: 10.1038/s41598-024-76556-x.
The significance of suspended sediment in the context of nutrient cycling and distribution in reservoirs is rarely reported in the scientific literature. What's more, suspended sediment (SS) have so far not been taken into account as a potential factor amplifying the degrading effects of nutrients on the functioning of reservoirs. In the experiment described here, the variability of SS concentrations and the content of total nitrogen (TN), total phosphorus (TP), total organic carbon (TOC) and organic matter (OM) were investigated to determine the potential and determinants of SS in the process of migration of these substances at the water-sediment interface in retention reservoirs. The results showed that SS significantly manipulate the distribution of values of total phosphorus and total organic carbon contained in bottom sediment. It was confirmed that the circulation and distribution of selected nutrients in reservoirs is closely related to suspended sediment. Thus, it was proven that SS significantly affect the quality of deposited sediment. Finally, it was concluded that suspended sediment in the water of reservoirs forms a kind of micro-ecosystem, in which it plays a hitherto undiscovered role of a catenary (hub) consolidating a number of phenomena and processes occurring between individual components in the water-bottom sediment system.
悬浮泥沙在水库营养物质循环与分布方面的意义在科学文献中鲜有报道。此外，悬浮泥沙（SS）至今尚未被视为放大营养物质对水库功能降解作用的潜在因素。在此所述的实验中，研究了悬浮泥沙浓度的变异性以及总氮（TN）、总磷（TP）、总有机碳（TOC）和有机质（OM）的含量，以确定这些物质在拦蓄水库水 - 沉积物界面迁移过程中悬浮泥沙的潜力和决定因素。结果表明，悬浮泥沙显著影响底泥中总磷和总有机碳含量的分布。证实了水库中特定营养物质的循环和分布与悬浮泥沙密切相关。因此，证明了悬浮泥沙显著影响沉积泥沙的质量。最后得出结论，水库水体中的悬浮泥沙形成了一种微生态系统，在其中它发挥着迄今未被发现的作用，即作为一个连接许多水 - 底泥系统中各个组分之间发生的现象和过程的链环（枢纽）。
