{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,26]],"date-time":"2026-04-26T15:25:46Z","timestamp":1777217146793,"version":"3.51.4"},"reference-count":44,"publisher":"Oxford University Press (OUP)","issue":"5","license":[{"start":{"date-parts":[[2024,9,1]],"date-time":"2024-09-01T00:00:00Z","timestamp":1725148800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"},{"start":{"date-parts":[[2024,2,14]],"date-time":"2024-02-14T00:00:00Z","timestamp":1707868800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100004855","name":"New York State Department of Environmental Conservation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100004855","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100004855","name":"New York State Department of Environmental Conservation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100004855","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["setac.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2024,9,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Copper-based aquatic algaecides have been widely used in the management of aquatic macrophyte and harmful algal blooms for decades due to their effectiveness and low cost. However, repeated treatment of freshwater lakes results in the accumulation of copper in the sediment, which may adversely affect the ecosystem of the lakes through toxicity to benthic invertebrates and other organisms. Consequently, copper-based aquatic herbicides and algaecides have been frequently subjected to regulations aimed at preventing further ecological deterioration in treated waterbodies. Many states in the US are taking or considering taking an approach that limits or prohibits copper treatment in waterbodies. Freshwater lakes with extensive historical copper treatments typically have significantly higher concentrations of copper in the sediment than untreated lakes. However, the correlation between the extent of the treatments and level of copper accumulation in the sediment has not been quantitatively characterized. In the present study, between 2006 and 2017, copper concentrations were measured in the sediment from selected lakes in New York State with different histories of copper-based aquatic algaecide treatment. Analysis of these data confirmed findings from earlier studies conducted by New York State that lakes with histories of copper treatment have significantly higher copper concentrations in the sediment. It also demonstrated that sediment copper concentrations were significantly higher in the sublittoral zone than the littoral zone in treated lakes. Moreover, a positive correlation was detected between sediment copper concentrations and the total number of treatments with copper-based aquatic algaecide for both littoral and sublittoral zones (p-value\u2009=\u20097.94\u2009\u00d7\u200910\u22128 and 3.1\u2009\u00d7\u200910\u221213, respectively). This relationship can be used as a screening tool for regulatory agencies to identify lakes with sediment copper levels possibly higher than the toxicity threshold for aquatic life. Consequently, additional ecological risk assessment may be required before allowing future treatment with copper-based aquatic algaecides. Integr Environ Assess Manag 2024;20:1586\u20131597. \u00a9 2024 SETAC<\/jats:p>\n               <jats:p>Key Points<\/jats:p>\n               <jats:p>Sediment copper concentration in freshwater lakes is positively correlated with the extent of copper-based algaecide treatment in the past. The correlation can be quantitatively characterized and used by regulators as a screening tool for management of future treatment of freshwater lakes with copper-based algaecide.<\/jats:p>","DOI":"10.1002\/ieam.4901","type":"journal-article","created":{"date-parts":[[2024,2,14]],"date-time":"2024-02-14T11:28:53Z","timestamp":1707910133000},"page":"1586-1597","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Sediment quality classification in freshwater lakes predicted by the history of treatment with copper-based aquatic algaecides"],"prefix":"10.1093","volume":"20","author":[{"given":"Yu","family":"Chen","sequence":"first","affiliation":[{"name":"Division of Material Management, New York State Department of Environmental Conservation, Albany, New York, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Patrick J.","family":"Sullivan","sequence":"additional","affiliation":[{"name":"Department of Natural Resources and the Environment, College of Agriculture and Life Sciences, Cornell University, Ithaca, New York, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eric","family":"Paul","sequence":"additional","affiliation":[{"name":"Division of Fish and Wildlife, New York State Department of Environmental Conservation, Albany, New York, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2024,9,1]]},"reference":[{"issue":"5","key":"2025010718464538300_ieam4901-bib-0001","doi-asserted-by":"crossref","first-page":"909","DOI":"10.1016\/j.toxicon.2009.07.006","article-title":"Recreational exposure to microcystins during algal blooms in two California lakes","volume":"55","author":"Backer","year":"2010","journal-title":"Toxicon"},{"issue":"1","key":"2025010718464538300_ieam4901-bib-0002","first-page":"103","article-title":"Effects of copper in sediments on benthic macroinvertebrate communities in tropical 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