Contrary to Vital Signs methods, I tend to find things I'm not looking for.
As I looked closely for "change over time" graphs for our Citizen Science in Classroom (CSIC) curriculum, and for vulnerability studies for a new curriculum stream I'm dreaming up, I stumbled upon this neat visual of phragmites invasion and recovery.
The paper by J. Zedler and S. Kercher is full of great information too:
Causes and Consequences of Invasive Plants in Wetlands: Opportunities, Opportunists, and Outcomes