title: V4 region of 18s rDNA amplifications from sedimentary environmental DNA extracted from sediment cores collected in the Bay of Brest, France
design: extracellular DNA extraction (EX) following methods used in terrestrial ecological biodiversity surveys (Zinger et al 2016, Soil. Biol. Biochem.) which consists in extracting extracellular DNA in saturated phosphate buffer prior to using the DNeasy Power Max soil kit without the cell lysis ste