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Release of Nutrients from Lake-Bottom Sediments Worsens Lake Erie’s Annual ‘dead zone,’ Could Intensify as Climate Warms

February 19, 2021

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15-30 mins
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U-M Cooperative Institute for Great Lakes Research (CIGLR) research technician and study lead author Hanna Anderson discusses how lake-bottom, or muddy, sediments has been worsening Lake Erie’s “dead zone,” an oxygen-depleted region that becomes uninhabitable for fish and other organisms. Anderson highlights her involvement in a new study that monitors self-fertilization, “the release of phosphorous from Lake Erie sediments during periods of low oxygen,” using lake-bottom sensors. The expert notes the relationships between this process and the nutrient pollution of Lake Erie, which could potentially intensify due to global warming, as well as describes in-depth the study using lake-bottom sensors.

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