The Continuation of Native Non-Invasive Plant Species Research of Engineered Wetlands

Wetlands are vital ecosystems that are capable of polishing wastewater. Although there is extensive research on constructed wetland wastewater treatment, information regarding the use of native non-invasive macrophytes is lacking. The first part of this study examined the use of native non-invasive plant species in laboratory-based engineered wetlands to assess their growth and nutrient removal. The blue flag iris, cardinal flower and sneezeweed were chosen for the experiment as they developed best under the laboratory conditions. Plant biomass increased with phosphorus additions and phosphorus concentrations remained high and were not reduced. The results are preliminary and further research is necessary. 

In the second part of this thesis the Palgrave Forest and Wildlife Area was visited to assess species identification, presence and seasonality. A total of 15 plant species were identified at the wetland, where 5 are invasive. As expected, seasonality had an impact on wetland productivity, biomass and species presence.