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dc.contributor.authorJardine, TD
dc.contributor.authorDoig, LE
dc.contributor.authorJones, PD
dc.contributor.authorBharadwaj, L
dc.contributor.authorCarr, M
dc.contributor.authorTendler, B
dc.contributor.authorLindenschmidt, KE
dc.date.accessioned2020-05-20T22:54:24Z
dc.date.available2020-05-20T22:54:24Z
dc.date.issued2019
dc.identifier.issn0045-6535
dc.identifier.doi10.1016/j.chemosphere.2019.05.282
dc.identifier.urihttp://hdl.handle.net/10072/393793
dc.description.abstractTrophic transfer of contaminants dictates concentrations and potential toxic effects in top predators, yet biomagnification behaviour of many trace elements is poorly understood. We examined concentrations of vanadium and thallium, two globally-distributed and anthropogenically-enriched elements, in a food web of the Slave River, Northwest Territories, Canada. We found that tissue concentrations of both elements declined with increasing trophic position as measured by δ15N. Slopes of log [element] versus δ15N regressions were both negative, with a steeper slope for V (−0.369) compared with Tl (−0.099). These slopes correspond to declines of 94% with each step in the food chain for V and 54% with each step in the food chain for Tl. This biodilution behaviour for both elements meant that concentrations in fish were well below values considered to be of concern for the health of fish-eating consumers. Further study of these elements in food webs is needed to allow a fuller understanding of biomagnification patterns across a range of species and systems.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom381
dc.relation.ispartofpageto386
dc.relation.ispartofjournalChemosphere
dc.relation.ispartofvolume233
dc.subject.fieldofresearchFreshwater Ecology
dc.subject.fieldofresearchcode060204
dc.subject.keywordsFishes
dc.subject.keywordsInvertebrates
dc.subject.keywordsPeriphyton
dc.subject.keywordsSlave river
dc.subject.keywordsTrace elements
dc.titleVanadium and thallium exhibit biodilution in a northern river food web
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationJardine, TD; Doig, LE; Jones, PD; Bharadwaj, L; Carr, M; Tendler, B; Lindenschmidt, KE, Vanadium and thallium exhibit biodilution in a northern river food web, Chemosphere, 2019, 233, pp. 381-386
dcterms.dateAccepted2019-05-29
dcterms.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.date.updated2020-05-12T02:41:00Z
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyright© 2019 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence, which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorJardine, Timothy


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