The association between a nurse cushion plant and a cluster root-bearing tree species alters the plant community structure

摘要

1. Several plant species have the potential to facilitate the presence of other plant species in the community, and yet most of our knowledge on this phenomenon comes from studies considering only one facilitator species. What happens when there are two facilitator species in the community? Are the facilitation effects by one species being altered by the presence of a potentially second facilitator species and vice-versa (i.e. bidirectional facilitation)?