This platform provide all the tools and skills required for answering fundamental or applied research questions in ecology, ecotoxicology, evolutionary biology, etc. It hosts multidisciplinary programs with applied issues concerning the evolutions of aquatic ecosystems under contrasted stressors: local stress (due to agricultural, industrial, urban activities) and/or global stress (due to climate change, but also to changes in land use or biological invasions). The PEARL facility consists in: - an experimental complex of two multipurpose halls (400 m² each), greenhouses (250 m²), an outdoor pond platform (500 m²) and about sixty aquatic mesocosms, located on the Rennes Agrocampus Ouest site. - A “pond” station of around 30 ponds (total surface of 5ha), in Le Rheu near Rennes.

Aims and Philosophy of the CoffeeFlux Collaborative Platform The aim of Coffee-Flux is to assess carbon, nutrients, water and sediment Ecosystem Services (ES) at the scale of a coffee agroforestry watershed and additional experiments. Observation, experimentation, modelling and remote-sensing are combined, collecting data and calibrating models locally, then upscaling to larger regions. The project has been running continuously since 2009, in order to encompass seasonal and inter-annual fluctuations of coffee productivity and ecosystem services. Coffee-flux is a platform where collaborative research on coffee agroforestry is promoted: data are being shared between collaborators and positive interactions are enhanced. The philosophy is to concentrate several investigations on one specific site and for several years, to share a useful common experimental database, to develop modelling and to publish results in highly-ranked scientific journals. Applied research is also highly encouraged (e.g. C-Neutral certification, NAMA, Agronomy, etc.). Coffee-Flux benefits from infrastructure, easy access from CATIE and very good security, ready to welcome complementary scientific investigations and collaborations. The project is wide open to complementary projects, scientists and of course to students. The core data base is for sharing.