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  • Study: 'Legacy' phosphorus delays water quality improvements in Gulf of Mexico

    Flooded farm field draining into stream

    A new study examines how phosphorus from agricultural runoff can become buried and re-released in the Mississippi River system, possibly delaying water quality improvement efforts in the Gulf of Mexico.

    Photo courtesy Lynn Betts


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  • Editor’s notes

    To reach Ximing Cai, call 217-333-4935; email

    The paper “Evaluating the longevity of in-stream phosphorus legacies: A downstream cascade of recovery following point source remediation” is available onlineDOI: 10.1016/j.scitotenv.2023.168711