Illinois river otters are just one of the susceptible organisms in the local environment, and a recent study is showing that they are indicating some very high levels of dangerous toxins (including a banned insecticide). 
 
“‘Thus otters serve as biomonitors – organisms that contain information on the quantitative and qualitative aspects of the environment – of wildlife exposure,’ according to a new study. They also serve as biomonitors for human health because the same toxic chemicals found in otters have also been found in people who eat contaminated fish.
 
The study published in the journal ‘Ecotoxicology and Environmental Safety’ found high concentrations of chemical compounds in the livers of 23 otters in central Illinois.
 
Especially troubling were the highest concentrations of dieldrin ever reported in otters anywhere in the United States, said lead author Samantha Carpenter, a wildlife technical assistant at the University of Illinois, Urbana-Champaign.
 
Dieldrin is one of the organochlorine insecticides banned in 1978. More than three decades later, high levels of the chemicals remain in river sediments and accumulate in the fish that otters and people may eat.
 
The compound has been linked to neurological, behavioral and immune-suppression problems in wildlife. Scientific studies disagree on adverse human effects, but some studies have linked dieldrin to asthma, Parkinson’s disease, Alzheimer’s disease and breast cancer, Carpenter said.”
Read the complete article at the link above.

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Ready for a party? Join us on the newly-expanded Wild Mile for a celebration of our urban waterways and thriving park spaces. Enjoy local beer, food trucks, and an outdoorsy prize drawing while learning about local environmental nonprofits and volunteer opportunities! This event is free and fun for all ages!The block party is rain-or-shine, and we'll only cancel in the case of hazardous weather!This year’s community partners include @Openlands, Current Water, @chicago_enviro, @cleanupclub_chicago, @chicago_birder, Blazing Star School, @cubillinois, Friends of the Bloomingdale Trail, @chicagoshapers, @reducewastechicago, Southern Utah Wilderness Alliance, and @honeycombproject!Learn more at the link in bio.
📢 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
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