EXPEER will bring together, major observational, experimental, analytical and modelling facilities in ecosystem science in Europe. By uniting these highly instrumented ecosystem research facilities under the same umbrella and with a common vision, EXPEER will form a key contribution to structuring and improving the European Research Area (ERA) within terrestrial ecosystem research.EXPEER builds on an ambitious plant for networking research groups and facilities. The joint research activities will provide a common framework and roadmap for improving the quality, interaction and individual as well as joint performance of these infrastructures in a durable and sustainable manner. EXPEER will provide a framework for increased use and exploitation of the unique facilities through a strong and coordinated programme for Transnational Access to the infrastructures. Extensive outreach and collaboration with related networks, infrastructures as well as potential funding bodies will ensure that EXPEER will contribute with its key experiences to the shaping and designing of future research networks and infrastructures, and that it has full support from all stakeholders in reaching its long-term objectives.The establishment of the EXPEER Integrated Infrastructure will enable integrated studies of the impacts of climate change, land use change and loss of biodiversity in terrestrial ecosystems through two major steps:1. Bringing together the EXPEER Infrastructures to enable collaboration and integration of observational, experimental and modelling approaches in ecosystem research (in line with the concept developed in ANAEE);2. Structuring existing network of ecosystem observational, monitoring and experimental sites across Europe (LTER-Europe).Through its integrated partnership, uniting both the experimental, observational, analytical and modelling research communities, EXPEER has the multidisciplinary expertise and critical mass to integrate and structure the European long-term ecosystem research facilities providing improved services and benefits to the whole research community as well as the society in general.