{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,10]],"date-time":"2026-08-10T10:32:45Z","timestamp":1786357965680,"version":"build-2736575974"},"reference-count":75,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2026,8,6]],"date-time":"2026-08-06T00:00:00Z","timestamp":1785974400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Innovation Guidance and Technology-Based Enterprise Cultivation Program","award":["202404BI090011"],"award-info":[{"award-number":["202404BI090011"]}]},{"name":"Major Science and Technology Special Project of Yunnan Province","award":["202002AE320005"],"award-info":[{"award-number":["202002AE320005"]}]},{"name":"Yunnan Provincial Talent Platform Project","award":["202405AM340004"],"award-info":[{"award-number":["202405AM340004"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Toxics"],"abstract":"<jats:p>Lake eutrophication may promote the remobilization of historically buried organochlorine pesticides (OCPs), yet the underlying mechanisms remain unclear. This study reconstructed an 80-year sedimentary record from Lake Qilu to elucidate the linkages between organic matter evolution and OCP dynamics. Sedimentary proxies reveal a transition from oligo-mesotrophic conditions before the 1980s to eutrophic states since the 1990s, with significant increases in total organic carbon (TOC), dissolved organic matter (DOM), and hydrophilic organic matter (HIM), alongside \u03b415N enrichment from +2.0\u2030 to +11.3\u2030 and a positive \u03b413C shift from \u221221.7\u2030 to \u221214.5\u2030. The OCP record exhibits three distinct phases: accumulation during the 1940s\u20131980s, decline following regulatory bans during the 1990s\u20132000s, and anomalous resurgence during the 2010s\u20132020s, with \u2211Drin (sum of aldrin, dieldrin, and endrin) reaching a historical peak of 10.54 \u03bcg\/kg in the 2020s. Significant positive correlations were observed between both individual OCP congeners and total OCP classes and total nitrogen (TN), DOM and HIM (p &lt; 0.01 or p &lt; 0.05), indicating that eutrophication-driven algal proliferation releases hydrophilic organic matter, which forms soluble complexes with hydrophobic OCPs, facilitating their upward migration. This study provides direct field evidence for eutrophication-driven OCP remobilization, with important implications for risk assessment of pollutants in eutrophic lakes worldwide.<\/jats:p>","DOI":"10.3390\/toxics14080694","type":"journal-article","created":{"date-parts":[[2026,8,6]],"date-time":"2026-08-06T08:08:02Z","timestamp":1786003682000},"page":"694","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Sedimentary Records of Organic Matter and Organochlorine Pesticides in a Eutrophic Shallow Plateau Lake: Implications for Eutrophication-Driven Pollutant Remobilization"],"prefix":"10.3390","volume":"14","author":[{"given":"Zhonghong","family":"Zhao","sequence":"first","affiliation":[{"name":"College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China"},{"name":"College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China"},{"name":"Yunnan Soil Fertility and Pollution Restoration Laboratory, Yunnan Agricultural University, Kunming 650201, China"},{"name":"The Research Center for Smart Greenhouse Agriculture Engineering of Yunnan Provincial Universities, Yunnan Agricultural University, Kunming 650201, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9542-7626","authenticated-orcid":false,"given":"Li","family":"Bao","sequence":"additional","affiliation":[{"name":"College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China"},{"name":"College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China"},{"name":"Yunnan Soil Fertility and Pollution Restoration Laboratory, Yunnan Agricultural University, Kunming 650201, China"},{"name":"The Research Center for Smart Greenhouse Agriculture Engineering of Yunnan Provincial Universities, Yunnan Agricultural University, Kunming 650201, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Min","family":"Ye","sequence":"additional","affiliation":[{"name":"College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China"},{"name":"College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China"},{"name":"Yunnan Soil Fertility and Pollution Restoration Laboratory, Yunnan Agricultural University, Kunming 650201, China"},{"name":"The Research Center for Smart Greenhouse Agriculture Engineering of Yunnan Provincial Universities, Yunnan Agricultural University, Kunming 650201, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Naiming","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China"},{"name":"College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China"},{"name":"Yunnan Soil Fertility and Pollution Restoration Laboratory, Yunnan Agricultural University, Kunming 650201, China"},{"name":"The Research Center for Smart Greenhouse Agriculture Engineering of Yunnan Provincial Universities, Yunnan Agricultural University, Kunming 650201, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"127135","DOI":"10.1016\/j.jenvman.2025.127135","article-title":"Records of human activities in sediments from the old Yellow River estuary, China: Concentrations, sources, and ecological risks of organochlorine pesticides","volume":"393","author":"Guo","year":"2025","journal-title":"J. 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