Discussion
Our results indicate that the hummingbird-mistletoe-marsupial mutualism
has the potential to promote the complexity and stability of pollination
and seed dispersal networks in the Patagonian temperate forest due the
ecological importance of its members. Moreover, our results show that
the disruption of this keystone interaction by non-native ungulates has
cascading effects on the rest of the community by eroding pollination
and seed dispersal networks in invaded sites.