The LTER-Slovenia network was established in 2003, when it also became a member of ILTER and LTER Europe. The national consortium consists of eight partners, including two universities, three research institutions, a regional park, a national museum and a cave laboratory. LTER-Slovenia brings together 16 highly equipped research sites where long-term socio-ecological research is conducted at two underground karst sites, two freshwater lakes, 11 terrestrial forest platforms and one marine site. These ecosystem research sites support, enhance and promote national and international multi- and interdisciplinary investigations of long-term biodiversity and ecosystem processes at different spatial and temporal scales. LTER-Slovenia has been on the national research infrastructure roadmap since 2016.