ned for temporal analyses (i.e. time-series). We used these coordinates to generate maps showing the spatial distribution of all sampling locations per time-series, and we then assessed whether these time-series were mostly constituted by sequences originating from Coastal or from Inland sampling locations. We then combined these maps with the worldwide drainage basins map extracted from the database compiled by Tedesco et al. (2017) to investigate, for each time-series, whether sequences from multiple demographically-independent sites (i.e. sampled at disconnected water bodies or drainage basins) were grouped together. All GIS analyses were conducted with ArcGis 10.2 (ESRI, Redland, CA, USA).