Ruben Heleno coordinates the Ecological Networks research group at the Centre for Functional Ecology of the University of Coimbra. He obtained his PhD in the UK in 2009 when looking at the impact of alien plants on Azorean food webs. Since then he continued to use species interaction networks to explore the driving rules of community assembly and collapse under different environmental stressors. Most of his research has been focused around oceanic islands, with long term studies in the Galapagos and related work in the Azores, Seychelles, São Tomé, Berlengas and Mozambique. Initially interested in seed dispersal and pollination networks, he is now looking for ways to combine mutualistic and antagonistic interactions under a unified multilayer network approach, bringing us closer to understand the intrinsic complexity of natural communities and its implications for ecology, evolution and conservation.