The steering committee of the international network on microbial ecotoxicology (EcotoxicoMic) had a one day meeting at Valence on June 7, 2023 to produce an overview of 2022 activities and to prepare, among others, the Second international webinar of young microbial ecotoxicology researchers (EcotoxicoMicYR 2023). This event, organized by and for young microbial ecotoxicologists, is a series of three half-day webinars will take place each Monday afternoon (Paris time zone) from November 13 to 27, 2023.