During May 13 and 14, 2024, the First International Meeting on the Biodiversity of the Pyrenean Lakes took place in Loudenvielle, Hautes-Pyrénées. The meeting was organized by the CBN of the Pyrenees and Midi-Pyrénées as the secretary of the scientific interest group (GIS) “Lacs des Pyrénées” and brought together researchers, managing entities, and decision-makers committed…