Invasive watermilfoil in Maine, 1970-2012

This video uses the Vital Signs map to track invasive variable watermilfoil from 1970-2012! Watch this species spread over time.

Grab the Map Guide called "How can I see if a species is spreading?" to see how this video was made, and to do this type of change over time analysis yourself with other species!

Project Information
Freshwater - In a pond or lake
Resources I used to create this project: 
Vital Signs map data, iMovie
How should others reference your work?: 
Invasive Variable Watermilfoil in Maine 1970-2012, Vital Signs Program, Dana Hutchins, March 2012