Effect and microbial mechanism of suspended sediments particle size on nitrous oxide emission in eutrophic lakes

Spatiotemporal Variation and Dynamics of Endogenous Nutrient Fluxes from Sediments in Hangzhou West Lake

“…This finding aligns with previous characterization of freshwater sediment microbial assemblages, which have consistently identified these two phyla as prevalent components globally . In particular, the high relative abundance of Proteobacteria aligns with prior research on sediments from eutrophic shallow lakes, where this phylum typically constitutes over 50% of bacterial sequences nitrogen, and sulfur cycling, conferring adaptability across sediment redox zones, while Bacteroidetes are implicated in the degradation of complex organic matter .…”

“…24 In particular, the high relative abundance of Proteobacteria aligns with prior research on sediments from eutrophic shallow lakes, where this phylum typically constitutes over 50% of bacterial sequences. 25 Proteobacteria encompass diverse metabolisms involved in carbon, 26 nitrogen, 27 and sulfur cycling, 28 conferring adaptability across sediment redox zones, while Bacteroidetes are implicated in the degradation of complex organic matter. 29 The dominance of these two phyla capable of utilizing a wide array of organic substrates corroborates conceptual models positing that the quality and quantity of organic matter largely shapes freshwater sediment community structure.…”