After she held a Doctorate in Sciences, Ardré was in charge of the phycology department of the Muséum national d'Histoire naturelle in Paris. She also conducted research programs in Portugal, in Spain (Cadaqués) and in France (Ile d'Yeu), among another locations. Able to dive in apnea without wetsuit in the cold water of the ocean, she fetched, discovered and collected herself the new seaweeds she studied.
Her most well known published literary work is Contribution à l'étude des Algues Marines du Portugal I: La Flore (English: Contribution to the Study of the Marine Algas of Portugal I: Flora).
Observations nouvelles sur la morphologie et la repartition géographique de trois ceramiales: Ceramium cinnabarinum, Mesothamnion caribaeum et Ctenosiphonia hypneoides.
In collaboration with Ir. Hardy-Halos and L. Saldanha, 1982.