{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T22:39:00Z","timestamp":1790289540401,"version":"4.1.0"},"reference-count":53,"publisher":"American Chemical Society (ACS)","issue":"5","license":[{"start":{"date-parts":[[2019,2,18]],"date-time":"2019-02-18T00:00:00Z","timestamp":1550448000000},"content-version":"vor","delay-in-days":11,"URL":"https:\/\/pubs.acs.org\/page\/policy\/authorchoice_termsofuse.html"}],"funder":[{"DOI":"10.13039\/100000155","name":"Division of Environmental Biology","doi-asserted-by":"publisher","award":["DEB-1353850"],"award-info":[{"award-number":["DEB-1353850"]}],"id":[{"id":"10.13039\/100000155","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000155","name":"Division of Environmental Biology","doi-asserted-by":"publisher","award":["DEB-1354811"],"award-info":[{"award-number":["DEB-1354811"]}],"id":[{"id":"10.13039\/100000155","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100007270","name":"University of Michigan","doi-asserted-by":"publisher","award":["NA"],"award-info":[{"award-number":["NA"]}],"id":[{"id":"10.13039\/100007270","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,3,5]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Compared to the extensive research on aquatic ecosystems, very little is known about the sources and trophic transfer of methylmercury (MeHg) in terrestrial ecosystems. In this study, we examine energy flow and trophic structure using stable carbon (\u03b413C) and nitrogen (\u03b415N) isotope ratios, respectively, and MeHg levels in basal resources and terrestrial invertebrates from four temperate forest ecosystems. We show that MeHg levels in biota increased significantly (p &amp;lt; 0.01) with \u03b413C and \u03b415N at all sites, implying the importance of both microbially processed diets (with increased \u03b413C) and trophic level (with increased \u03b415N) at which organisms feed, on MeHg levels in forest floor biota. The trophic magnification slopes of MeHg (defined as the slope of log10MeHg vs \u03b415N) for these forest floor food webs (0.20\u20130.28) were not significantly different (p &amp;gt; 0.05) from those observed for diverse temperate freshwater systems (0.24 \u00b1 0.07; n = 78), demonstrating for the first time the nearly equivalent efficiencies with which MeHg moves up the food chain in these contrasting ecosystem types. Our results suggest that in situ production of MeHg within the forest floor and efficient biomagnification both elevate MeHg levels in carnivorous invertebrates in temperate forests, which can contribute to significant bioaccumulation of this neurotoxin in terrestrial apex predators.<\/jats:p>","DOI":"10.1021\/acs.est.8b06053","type":"journal-article","created":{"date-parts":[[2019,2,7]],"date-time":"2019-02-07T00:06:02Z","timestamp":1549497962000},"page":"2434-2440","source":"Crossref","is-referenced-by-count":51,"title":["Controls\nof Methylmercury Bioaccumulation in Forest\nFloor Food Webs"],"prefix":"10.1021","volume":"53","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2002-1530","authenticated-orcid":true,"given":"Martin","family":"Tsz-Ki Tsui","sequence":"first","affiliation":[{"name":"University of North Carolina at Greensboro , , , ,","place":["Greensboro, North Carolina, United States, 27402"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Songnian","family":"Liu","sequence":"additional","affiliation":[{"name":"University of North Carolina at Greensboro , , , ,","place":["Greensboro, North Carolina, United States, 27402"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rebecka L.","family":"Brasso","sequence":"additional","affiliation":[{"name":"Weber State University , , , ,","place":["Ogden, Utah, United States, 84408"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5389-8633","authenticated-orcid":true,"given":"Joel D.","family":"Blum","sequence":"additional","affiliation":[{"name":"University of Michigan , , , ,","place":["Ann Arbor, Michigan, United States, 48109"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sae Yun","family":"Kwon","sequence":"additional","affiliation":[{"name":"Pohang University of Science and Technology , , ,","place":["Pohang, South Korea, 37673"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yener","family":"Ulus","sequence":"additional","affiliation":[{"name":"University of North Carolina at Greensboro , , , ,","place":["Greensboro, North Carolina, United States, 27402"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yabing H.","family":"Nollet","sequence":"additional","affiliation":[{"name":"Metropolitan Council Environmental Services , , ,","place":["St. Paul, Minnesota, United States, 55106"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2606-0450","authenticated-orcid":true,"given":"Steven J.","family":"Balogh","sequence":"additional","affiliation":[{"name":"Metropolitan Council Environmental Services , , ,","place":["St. Paul, Minnesota, United States, 55106"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sue L.","family":"Eggert","sequence":"additional","affiliation":[{"name":"U.S.D.A. 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