A significant part of the analytical or experimental work at IEES-Paris is carried out on external equipment:
- The IRD Alysés platform based in Bondy to which an IEES-Paris agent is assigned, the majority of the personnel of this equipment coming from the LOCEAN research unit.
- The CEREEP-Ecotron of Ile de France, located in the commune of Saint-Pierre lès Nemours south of Fontainebleau, whose Director and Deputy Director are members of IEES-Paris, where work on population dynamics and communities, and the functioning of terrestrial and aquatic ecosystems.