“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
- Educators immerse in Great Lakes science aboard EPA research vessel
- Tomas Höök reflects on a legacy of leadership, collaboration and impact at IISG
- Freshwater jellyfish may increase in numbers as Illinois and Indiana waters continue to warm
- Tomas Höök signing off as Illinois-Indiana Sea Grant director this summer
- Illinois-Indiana Sea Grant welcomes Stuart Carlton as the program’s new director
IISG Instagram
Curious minds wanted! The Students Ask Scientists program connects classrooms with Great Lakes scientists to explore how science comes alive beyond the textbook.
From burning questions to career inspiration, students dive into the wonders of the Great Lakes—one question at a time.
Learn more at the link in bio.

Tomas Höök has left an incredible mark during his time as Director of Illinois-Indiana Sea Grant, and now he’s reflecting on a legacy filled with leadership, collaboration, and impact. From expanding our aquaculture and education programs, to helping communities make sense of the effects of Lake Michigan’s shifting shorelines — his work has helped grow what we do and who we serve.
Read the full feature at the link in bio to see what he’ll carry forward in his new role as Head of Purdue’s Department of Forestry & Natural Resources.

The Invasive Crayfish Collaborative is hosting a webinar on Friday, September 12th at 11:00am CT / 12:00pm ET. Join us for the seminar "Red Swamp Crayfish Telemetry Across Seasons and Techniques" presented by post-doctoral researcher Dr. William Ota of Michigan State University. Dr. Ota will present his research on red swamp crayfish movement ecology, which involves the use of both radio and acoustic telemetry.
Register at the link in bio.

In late July, formal and non-formal educators joined @nature_indiana, @indianadnr Division of Nature Preserves, and @lakecountyparks for a workshop exploring ecological restoration in the Grand Calumet River Area of Concern.
Participants toured restored sites in East Chicago and Hammond, engaged with experts in sediment remediation and habitat restoration, and experienced a cutting-edge Virtual Reality curriculum aligned with NGSS for grades 6–12.
From industrial past to ecological renewal, educators left inspired and equipped to bring local environmental stories into their classrooms.
Learn more about the VR Tour at the link in bio.
#TeachingTuesday

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