Soumis à des conditions climatiques extrêmes, les lacs d'altitudes ont des fonctionnements spécifiques encore méconnus. Pour mieux les comprendre et suivre leurs évolutions, gestionnaires d'espaces naturels et scientifiques allient leurs forces dans le programme alpin : Lacs sentinelles.
Aujourd'hui, l'équipe de terrain coordonnée par Vincent Augé, chargé de mission scientifique et milieux naturels au Parc national de la Vanoise va s'adonner à un ballet singulier pour récolter chiffres et données afin de mieux comprendre le fonctionnement et les menaces qui pèsent sur le lac Merlet supérieur, à 2450 mètres d'altitude.
Veilleurs de lacs de montagne est un épisode de la série Le souffle des cimes, le podcast produit par le Parc national de la Vanoise. Réalisation : Alice Roy, illustration musicale : Madjo.
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