File Giguet-Covex_MamP007_sequence_data_run1.fasta This file contains all unique sequences produced by MamP007F (5’- CGAGAAGACCCTATGGAGCT-3’) and MamP007R (5’- CCGAGGTCRCCCCAACC-3’) primers. The sequences have been produced by the Illumina technology (GA IIx platform). Data collection: Charline Giguet-Covex, Fabien Arnaud, Jérôme Poulenard, Johan Pansu, Pierre Taberlet, Isabelle Domaizon and Ludovic Gielly Charline Giguet-Covex, Fabien Arnaud and Jérôme Poulenard collected lake sediment cores in the field Charline Giguet-Covex, Johan Pansu, Pierre Taberlet, Isabelle Domaizon collected lake sediment samples in the laboratory. Charline Giguet-Covex, Johan Pansu, Pierre Taberlet and Isabelle Domaizon performed the DNA extraction. Ludovic Gielly performed the DNA amplification. Johan Pansu performed the data analysis. Contact authors: Charline Giguet-Covex and Johan Pansu (charlinegiguet@gmail.com; johan.pansu@gmail.com) The header of each sequence contains: (i) the ID for the sequence (ii) the total number of occurrence of the sequence in the dataset (count) (iii) the number of occurrence in the different lake sediment samples