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UpClose: A toxicologist investigates pesticides in urban waterways

March 25th, 2016 by

What happens when a canary in the coal mine can no longer be trusted to sound the alarm? Environmental chemist Michael Lydy answers this question in the latest edition of UpClose.

Lydy and his team at Southern Illinois University Carbondale are in the early stages of a three-year study examining the prevalence of pyrethroid insecticide resistance in a crustacean used by the U.S. Environmental Protection Agency to gauge the health of waterways. Widespread resistance in Hyalella azteca—something Lydy and others have already found in California and the Midwest—would raise doubts about the accuracy of a spectrum of state and federal biomonitoring programs.

Funded by a grant from the U.S. Geological Survey and the Illinois Water Resources Center, the study will also investigate whether a testing method known as Tenax can help scientists and natural resources managers more accurately predict the threat pyrethroids pose to aquatic life.

UpClose with  is the eleventh issue of the award-winning Q&A series that gives readers an insider’s view of research on emerging contaminants. Each interview highlights a unique component of emerging contaminant research. Readers also learn about the complex, and sometimes tricky, process of conducting field studies and the potential implications of research on industries and regulations.

 

 

 

Reducing the use of lawn chemicals prevents pollution in nearby waterways

September 17th, 2014 by


Lawn care decisions play a large role in local water quality and the health of aquatic wildlife. The fertilizers, pesticides, and other chemicals we put on our lawns can be washed into nearby lakes and rivers in stormwater runoff. Once there, these pollutants spur algae growth, clog gills, decrease resistance to disease, and suffocate eggs and newly hatched larvae. 

The IISG-led Lawn to Lake program continues to educate homeowners, landscapers, and master gardeners on natural lawn care practices that can improve soil health and protect water quality. The program works with community partners across the region to conduct training workshops and provide ‘how to’ resources for a range of audiences. 

Lawn to Lake outreach has led to management changes on an estimated 22,415 lawn acres. These changes are expected to reduce the use of lawn care chemicals, including weed and feed, by more than 3 million pounds a year, protecting nearby aquatic ecosystems from chemical-laden runoff while fostering healthy lawns. 

To learn more about how IISG is empowering communities and individuals to secure a healthy environment, check out our 2013 program impacts. 

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📢 Show Your Support for Sea Grant! 📢Continued federal funding for Sea Grant in FY26 is crucial, and we need your help to demonstrate the nationwide support for these essential programs.🖊️ Sign the letter urging Congress to continue funding Illinois-Indiana Sea Grant and all 34 state Sea Grant programs:🔗 https://forms.gle/7sPGHGyh8j8a7vfGA or link in bio
Exciting news! The call for sessions for the 2026 Emerging Contaminants in the Environment Conference has been extended! We are excited to offer the opportunity to propose a speaker or panel session during the 2026 Emerging Contaminants in the Environment Conference April 28-29.  The conference will feature traditional 15-minute presentations and a poster session on the latest in emerging contaminant research, policies, and outreach in the soil, water, and air.The deadline to propose a session is September 30, 2025.Learn more at go.illinois.edu/ecec or the link in bio
Stay safe and have fun this Fourth of July with these 5 water safety tips! Click the link in bio to learn more ways to keep yourself and others safe as you enjoy the Lake Michigan beaches this holiday.
Four science educators from Illinois and Indiana have been selected for the 2025 Shipboard Science Immersion on Lake Michigan July 7-13. The educators will spend a full week alongside researchers aboard the EPA research vessel Lake Guardian. Afterwards, they will bring Great Lakes science back to their classroom. Learn more and meet the four incredible teachers representing Illinois and Indiana at the link in bio.
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