Exploring the interplay of space, time, and attraction in coexistence of Splachnaceae mosses with individual based modelling

Background/Question/Methods

We explored, using an individual based model, the coexistence of two congeneric fly-dispersed dung-mosses (family: Splachnaceae). With the model we examined the relative importance of niche determinants such as dispersal potential, dispersal phenology, and attractiveness to fly vectors in promoting coexistence. The model explicitly tracks three types of individuals; uncolonized dung, immature populations, and mature populations as spores move from mature populations to dung and juvenile mosses (protonemata) compete.

Results/Conclusions

Model outcomes demonstrate that, in addition to well established trade-off's between dispersal and coexistence, temporal niche segragation in comparative dispersal phenologies can permit coexistence despite large competitive differences. Additionally the model demonstrates the strength of attraction between the moss and its fly vectors is influential in dictating the outcomes of competition.