The study looked at how different plant species interact with each other in an urban plant community. They focused on Artemisia vulgaris and its borders with other species like forbs, grasses, and shrubs. The researchers found that interactions between species varied a lot and were not just based on their guild membership. Some species were able to coexist with Artemisia vulgaris, while others were not. The study showed that the dynamics of plant populations were influenced by yearly fluctuations and not just direct competition. Overall, Artemisia vulgaris did not always dominate other species, sometimes it was even outcompeted by them.