What happens to soil and native plant life after removal of Lonicera maackii in an urban temperate forest?

In evaluating the potential effects of nitrogen cycles and pH on plant diversity and richness after the removal of Lonicera maackii in a temperate urban forest in Louisville, Kentucky, data was collected including nitrogen, pH, canopy, stem count, and plant surveys. The cutting and treatment with chemicals to remove L. maackii were successful one year after the treatments, but legacy effects ensued about five years thereafter. Native diversity waned as monoculture proliferated in some areas, including second invasions of the invasive. It was expected that nitrogen and pH would explain the success (or lack thereof) of native plant response as well as legacy effects. Results indicate that there are non-significant levels of relevance between plant diversity, nitrogen, and pH, which may be due to deficiencies in seasonal data and biota analysis, indicating that further research is necessary to explore additional factors affecting plant diversity in the parkland.