The aim of MIREN is to understand the effects of global change on species’ distributions and biodiversity in mountainous areas. MIREN got founded in 2005 with a focus on the global monitoring of non-native plant invasions in mountains. Now, that initial focus has expanded to the study of species redistribution under different drivers of global change, including biological invasions, climate change, and land-use change. We perform observational and experimental studies along elevation gradients to evaluate and quantify the processes and mechanisms that are shaping mountain plant communities at regional to global scales.