Mystery Graph: Hemlock woolly adelgid (Adelges tsugae)

Use this activity to kick off a Vital Signs investigation focused on hemlock woolly adelgid (Adelges tsugae). Use your graphing skills to figure out and explain the introduction and spread of hemlock woolly adelgid in Maine from 1999 to 2010.

Project Information
Grade Level: 
Middle school (grades 6-8)
High school (grades 9-12)
Resources I used: 
WCSH6 video: (Direct link: HWA news articles from May 2010: Map of official HWA sites in Maine (2010): Note: You need Google Earth on your computer to view this map Maine Forest Service website:
How should others reference your work?: 
vitalteach, Mystery Graph: Hemlock woolly adelgid, Vital Signs Program, Gulf of Maine Research Institute, 2010