{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T03:29:38Z","timestamp":1787023778309,"version":"build-2736575974"},"reference-count":66,"publisher":"Oxford University Press (OUP)","issue":"4","license":[{"start":{"date-parts":[[2005,4,1]],"date-time":"2005-04-01T00:00:00Z","timestamp":1112313600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"},{"start":{"date-parts":[[2009,12,9]],"date-time":"2009-12-09T00:00:00Z","timestamp":1260316800000},"content-version":"vor","delay-in-days":1713,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["setac.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2005,4,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>To develop a suitable biomonitor of metal pollution in watersheds, we examined trends in exposure to nine trace elements in the diet (benthic invertebrates and fish), feathers (n = 104), and feces (n = 14) of an aquatic passerine, the American dipper (Cinclus mexicanus), from the Chilliwack watershed in British Columbia, Canada. We hypothesized that key differences may exist in exposure to metals for resident dippers that occupy the main river year-round and altitudinal migrants that breed on higher elevation tributaries because of differences in prey metal levels between locations or possible differences in diet composition. Metals most commonly detected in dipper feather samples in decreasing order were Zn &amp;gt; Cu &amp;gt; Hg &amp;gt; Se &amp;gt; Pb &amp;gt; Mn &amp;gt; Cd &amp;gt; Al &amp;gt; As. Resident dipper feathers contained significantly higher mean concentrations of mercury (0.64 \u03bcg\/g dry wt), cadmium (0.19 \u03bcg\/g dry wt), and copper (10.8 \u03bcg\/g dry wt) relative to migrants. Mass balance models used to predict daily metal exposure for dippers with different diets and breeding locations within a watershed showed that variation in metal levels primarily was attributed to differences in the proportion offish and invertebrates in the diet of residents and migrants. In comparing predicted metal exposure values to tolerable daily intakes (TDI), we found that most metals were below or within the range of TDI, except selenium, aluminum, and zinc. Other metals, such as cadmium, copper, and arsenic, were only of concern for dippers mainly feeding on insects; mercury was only of concern for dippers consuming high fish diets. The models were useful tools to demonstrate how shifts in diet and breeding location within a single watershed can result in changes in exposure that may be of toxicological significance.<\/jats:p>","DOI":"10.1897\/04-110r.1","type":"journal-article","created":{"date-parts":[[2005,3,19]],"date-time":"2005-03-19T06:32:06Z","timestamp":1111213926000},"page":"836-845","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":49,"title":["Assessing trace-metal exposure to American dippers in mountain streams of southwestern British Columbia, Canada"],"prefix":"10.1093","volume":"24","author":[{"given":"Christy A.","family":"Morrissey","sequence":"first","affiliation":[{"name":"Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leah 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