Isle Royale has always held an allure for those seeking adventure and solitude. Its unique isolation in northwestern Lake Superior also makes it a fascinating place to study ecology.
If it's too windy to get out on the water today, take a seat by the shore with one of our resource briefs or reports and see what we're learning about the Royal Island.
Resources Briefs are condensed versions of our technical reports. They rely on graphics and images more than dense scientific writing, but anyone who is intrigued and wants to know more can always use the resource brief as an entry into the report.
Dragonfly Mercury Project
Find out the latest about mercury and dragonfly larvae at your park!
As a foundational part of the aquatic food web, dragonfly larvae we collect each summer are tested for mercury in the environment, which helps us understand mercury contamination at higher levels of the food web.
Visit the website below to find the latest "dragonflier" for Isle Royale.
The Dragonfly Mercury Project Annual Data Fliers (usgs.gov)
Last updated: October 4, 2023