There is limited understanding of how the disruption of keystone interactions, which are known to be important in the relationship between structure and stability, impacts multitrophic networks. In this study, we used the example of the Patagonian hummingbird-mistletoe-marsupial keystone interaction and its disruption by an invasive ungulate species to address this gap. Our model system and multilayer network analysis allow us to examine the broader consequences of disturbances, such as invasive species, on the structure and stability of multitrophic networks. Take a look here.