“The report from the multi-institution EcoFore-Lake Erie project states that a 46 percent reduction in the amount, or load, of phosphorus pollution would be needed to shrink Lake Erie’s Central Basin hypoxic zone to a size last seen in the mid-1990s—a time that coincided with the recovery of several recreational and commercial fisheries in the lake’s west and central basins.Phosphorus is a nutrient used in crop fertilizers. Excess phosphorus washes off croplands during rainstorms and flows downstream in rivers that feed the Great Lakes. Once in the lakes, phosphorus can trigger algae blooms. When the algae die and sink to the lake bottom, oxygen-consuming bacteria feed on them and create hypoxic zones in the process. Many fish shun these oxygen-starved waters, which significantly reduce the amount of suitable habitat available to the fish.The study, accepted for publication in a forthcoming edition of the Journal of Great Lakes Research, calls for Central Basin phosphorus reductions considerably higher than other recent recommendations, including a proposal issued last year by the Ohio Lake Erie Phosphorus Task Force aimed at avoiding Western Basin toxic algae blooms. The new report is a synthesis of the major findings from the EcoFore-Lake Erie project, created in 2005 and supported by the U.S. National Oceanic and Atmospheric Administration’s Center for Sponsored Coastal Ocean Research.”
Category:
Lake Erie “dead zone” research includes work by IISG specialist
March 3rd, 2014 by iisg_superadminWisconsin students learn about Great Lakes cleanup
December 10th, 2012 by Irene MilesCaitie writes, “I visited Sheboygan, Wisconsin last Tuesday and spoke to high school biology students, answering questions about the Great Lakes Legacy Act dredging project happening just two miles from their school. This was my final school to visit in Sheboygan as part of a 12-school, countywide tour, which began this past October and reached about 600 high school science students. Now the students know the purpose of a cleanup happening right in their downtown, and they understand the science behind it.

This project is part of a larger effort to provide students with stewardship opportunities and supplemental hands-on education about remediation and restoration efforts throughout the Great Lakes. It has been great to work with students in Sheboygan and Northwest Indiana, and I look forward to bringing this program to more Great Lakes students soon.”
Sea Grant staff take to the sea for research
August 10th, 2012 by Irene MilesCommunity outreach specialist Kristin TePas rinses a PONAR dredge used to collect sediment containing benthic organisms. |
IISG Great Lakes ecosystem specialist Paris Collingsworth deploys a net to collect zooplankton. |
“The Great Lakes National Program Office (GLNPO) of the U.S. Environmental Protection Agency (USEPA) is responsible for monitoring the offshore water quality of the Great Lakes to evaluate water quality over time and identify any emerging water quality problems. Comprehensive water quality surveys are conducted in all five Great Lakes in both the spring, when the water is cold and well mixed, and in the summer, when the lakes are biologically active. The R/V Lake Guardian is currently being used to conduct the summer water quality survey.”
Educators set sail on Lake Huron
July 31st, 2012 by Irene MilesGLRRIN Lake Michigan partners examine future of Lake Michigan food webs
April 11th, 2012 by Irene MilesThe term “food web” is used to describe the intricate relationships between the many different plants, animals, and organisms that can exist in small or large areas. Understanding food webs in specific environmental locations, such as in one or more of the Great Lakes, can help researchers and communities better respond to changes in those delicate systems. Invasive species are just one example of a potential influence that can drastically alter a food web and have substantial impacts on native environments.
Recent News
- The Helm magazine focuses on coastal resilience, the Lake Michigan food web, and more
- The Know Your H₂O Kit gets a real-world lab test by middle schoolers
- IISG has a long history of supporting teachers through Great Lakes activities and resources
- Join Sea Grant to oversee program research and reporting
- Educators immerse in Great Lakes science aboard EPA research vessel
IISG Instagram
How Do You Track a Fish in a Great Lake?
Are your students curious about how scientists track fish underwater? In this Students Ask Scientists session, discover how researchers use acoustic telemetry to track fish like yellow perch in Lake Michigan.
You will meet Anna Hill, a master’s student at Purdue University, as she shares her career journey studying marine and freshwater systems.
📅 Date: November 6, 2025
🕚 Time: 11:00 AM–12:00 PM CT
🎯 Audience: Middle school students & up + educators
💻 Location: Zoom (Pre-registration required)
Learn more and register at the link in bio.
#TeachingTuesday
#StudentsAskScientists
#LakeMichigan

Join us at Illinois Beach State Park for Fall Nature Fest, a free, family-friendly event featuring guided hikes, hands-on activities, and interactive exhibits for all ages. Due to the potential for inclement weather, the fun is moving inside the Nature Center.
So, stop by, stay dry, and meet specialists from the Illinois-Indiana Sea Grant as you explore interactive exhibits that celebrate Illinois’ natural heritage and the beauty of fall along Lake Michigan. We will be hosting the Great Plankton Race, which is a hands-on challenge where you’ll design your own plankton model and race it against others to test your creativity and engineering skills!
When: Saturday, October 18th, 10 AM to 2 PM.
Where: The Nature Center at Illinois Beach State Park.
Register today to receive event updates at the link in bio.

The Center for Great Lakes Literacy has launched a beautifully redesigned website. The star of the show is the Resource Library!
Whether you`re teaching in a classroom, leading a community program, or just passionate about the Great Lakes, the new hub makes it easier than ever to find lesson plans, activities, videos, and stewardship ideas tailored to your needs.
🔗 Visit the link in bio to dive in!
#TeachingTuesday

This summer, 15 Great Lakes educators swapped lesson plans for life jackets as they boarded the Lake Guardian, the U.S. Environmental Protection Agency’s research vessel, and set sail on Lake Michigan. Through the Shipboard Science Immersion program, 5–12 grade formal and non-formal educators worked side by side with Great Lakes scientists for a week—an experience they say will ripple back to their classrooms for years to come.
Read more at the link in bio.

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