Nancy suggested I use the Daubenmire Cover Class method for my analysis of native vs invasive species cover in each Zone of each Wedge in my wetland. This worked quite well and definitely made data analysis easier. After creating a table with Daubenmire Cover Classes, I was able to find a suitable bar graph style in excel to visually show my results. There were no major surprises, except for the riparian Zone (2) in Wedge C that had an unusually high invasive species presence. This is where the Reed Canary Grass is concentrated in this wetland.
Paired with another graph that shows the number of native vs invasive species present in each Zone of each Wedge, the hypothesis still holds that all parts of Zone 2 have higher native species richness/diversity than the other zones.