The city of Arques has launched a participatory project with the Nord Nature Chico Mendès association on the study of butterflies.
Easy to approach and recognize, they represent an excellent indicator of the quality of our landscapes. The operation consists in carrying out field surveys on the natural areas of the municipality. 
This project has made it possible to start a real dynamic of monitoring and preserving the biodiversity of green spaces. The monitoring will enable the municipality to assess the positive effects of the differentiated management it has been implementing for several years.