OLM 9.5 The dynamical role of spatial constraints in competitive interactions
We compared two versions of the single-species site occupancy model in Figure 6.10b (TBE, p.103). While reproduction is possible to any empty site in the Levins model (TBox 6.2; p.102), dispersal is limited to the neighbouring sites in its spatially explicit version. The spatial constraint of dispersal is increasingly detrimental to a population, when it becomes rare. On the other hand, we have learnt that coexistence is based on rare advantage in Ch9Coex (p.170), therefore rare disadvantage by limited dispersal should decrease the propensity for coexistence. Here, we study this effect by a specific example.