Fig. 2

Schematic overview to obtain and maintain the harbor porpoise data series from data acquisition to harvesting of biodiversity information (solid arrows), and the data files involved in each step (broken arrows). Data read from the PAM loggers (DATA0.CHE, DATA1.CHE,…) are developed into .CP1 files, classified and manually validated as .CP3 files, and exported as (1) Detections and environment and (2) Train duration one-minute resolution text files according to quality class. The text files as well as the deployment metadata are uploaded on the European Tracking Network (ETN³³) database, which could be visualized and analyzed through the LifeWatch data explorer³⁶ and the lwdataexplorer³⁸ package accessible in R. Datasets in minute- and hour-resolution are both published yearly with a Digital Object Identifier (DOI) on the Integrated Marine Information System (IMIS^{39,40,41,42,43,44,45,46,47}) and Marine Data Archive (MDA⁴⁸). Datasets in hour-resolution, aggregated from the minute-resolution datasets, are published in a Darwin Core Archive format (DwC-A) on IMIS⁴⁹ and in several unrestrictive repositories.