Evaluating sedimentary DNA for tracing eutrophication-associated cyanobacteria species in subrecent varved sediments of lake Tiefer See, NE Germany.

We assess possible changes in cyanobacterial community dynamics via sedimentary DNA (sedDNA) from lake sediments, with the aim of creating a distinction between their natural and human drivers. Using amplicon sequencing approach, we sequenced cyanobacterial-derived DNA from a sediment core of lake Tiefer See spanning the last three and a half centuries. Our findings highlight the importance of high-resolution amplicon sequencing in investigating the dynamics of past cyanobacterial communities and paves the way for Holocene cyanobacteria investigation.