Now a professor at the Museum of Plant Ecology, Nathalie Machon did her thesis on the genetic diversity of forest trees at the ESE Laboratory of the University of Paris-Sud Orsay between 1992 and 1995. After a postdoctoral fellowship in the same institution on the effect of the increase in atmospheric CO2 on Arabidopsis thaliana populations, she joined the National Botanical Conservatory of the Paris Basin in 1996 as a lecturer. She joined CESCO when it was created in 2002 and is a member of the Urban Biodiversity Team (URBA). She is interested in the dynamics and genetics of small populations and is conducting two complementary research projects: one on populations of rare and endangered plant species and the other on urban plant populations. Since 2017, she has been the director of the Doctoral School of Natural and Human Sciences MNHN-Sorbonne University.