2019
DOI: 10.1002/etc.4508
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Distribution of Experimentally Added Selenium in a Boreal Lake Ecosystem

Abstract: Human activities have increased the release of selenium (Se) to aquatic environments, but information about the trophic transfer dynamics of Se in Canadian boreal lake systems is limited. In the present study, Se was added as selenite to limnocorrals (2‐m‐diameter, 3000‐L in situ enclosures) in a boreal lake in northwestern Ontario to reach nominal concentrations of 1 and 10 µg Se/L in triplicate each for 77 d, and 3 additional limnocorrals were controls with no Se added. Total Se concentrations were determine… Show more

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Cited by 18 publications
(15 citation statements)
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“…Lower accumulation of Se in sediment relative to algae has been observed [31,45]. It is likely that the biotic components of measured particulate Se would be responsible for most of the accumulation, and the presence of inorganic materials may dilute the measured Se present.…”
Section: Taxonomic Differences In Se Accumulationmentioning
confidence: 85%
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“…Lower accumulation of Se in sediment relative to algae has been observed [31,45]. It is likely that the biotic components of measured particulate Se would be responsible for most of the accumulation, and the presence of inorganic materials may dilute the measured Se present.…”
Section: Taxonomic Differences In Se Accumulationmentioning
confidence: 85%
“…. Closed circles are from periphytic biofilms in mesoscosms spiked with Se(IV) in a boreal lake [45] and the open circles are from pelagic microplankton (<64 μm filtered and centrifuged water) collected in 12 boreal lakes in two mining regions [23]. Note that these are among the highest kds reported in Figure 1C.…”
Section: Case Examples Of High Selenium Bioaccumulationmentioning
confidence: 94%
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“…However, little information is available regarding the potential ecological impacts of elevated Se on other organisms such as benthic macroinvertebrates (BMI) and zooplankton; and it is presently unclear whether these fish tissue guidelines are protective of the invertebrate taxa inhabiting an aquatic system. Furthermore, there is a need for organism-based tissue Se guidelines for the protection of aquatic life in fishless waters, because excess Se has the potential to adversely impact aquatic invertebrates at environmentally relevant levels (Debruyn & Chapman, 2007;Graves et al, 2019aGraves et al, , 2019b.…”
Section: Introductionmentioning
confidence: 99%