Influence of nutrient additions on cadmium bioaccumulation by aquatic invertebrates in littoral enclosures. Currie, R., S., Muir, D., C., G., Fairchild, W., L., Holoka, M., H., & Hecky, R., E. Environmental Toxicology and Chemistry, 17(12):2435-2443, 1998. ![Influence of nutrient additions on cadmium bioaccumulation by aquatic invertebrates in littoral enclosures [pdf]](https://bibbase.org/img/filetypes/pdf.svg "pdf")
Paper abstract bibtex Cadmium distribution and bioaccumulation were examined over a 22-year period (1991-1992) in two nutrient-enriched and two control littoral enclosures and in the littoral zone in Lake 382 (L382). Lake 382, a small oligotrophic lake, is located within the Experimental Lakes Area in northwestern Ontario, Canada, and received experimental Cd additions from 1987 to 1992. In the second year of this study, chlorophyll a and suspended C concentrations in the nutrient-enriched enclosures increased by 6.6 and 3.4 times, respectively, compared to the controls. As a result of increased particulate produced bY the nutrient additions, Cd concentrations in water from the nutrient-enriched enclosures were higher (46-114 ng/L) compared to the controls (23-84 ng/L). Estimated Cd/C concentrations in water were lower in the nutrient-enriched enclosures relative to the controls because of higher particle concentrations. Effects on Cd bioaccumulation were limited even though mesotrophic to eutrophic conditions were reached in the nutrient- enriched enclosures. Trends for lower Cd concentrations in mussels and crayfish from the nutrient-enriched enclosures compared to the controls were observed; however, significant differences were rarely detected. Zooplankton and immature Chironomidae from the nutrient-enriched enclosures had consistently higher Cd concentrations compared to the controls, but significant differences were not detected. Enhanced accumulation of Cd-rich particulate matter by these organisms may account for this trend. Mussels and crayfish accumulated significantly more Cd when exposed in the lake compared to the enclosures. This observation is due to elevated Cd water concentrations in the lake compared to the enclosures because of continued Cd additions to the lake. These results suggest that the water route of exposure is an important pathway for Cd accumulation by these organisms.
@article{
title = {Influence of nutrient additions on cadmium bioaccumulation by aquatic invertebrates in littoral enclosures},
type = {article},
year = {1998},
identifiers = {[object Object]},
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pages = {2435-2443},
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abstract = {Cadmium distribution and bioaccumulation were examined over a 22-year period (1991-1992) in two nutrient-enriched and two control littoral enclosures and in the littoral zone in Lake 382 (L382). Lake 382, a small oligotrophic lake, is located within the Experimental Lakes Area in northwestern Ontario, Canada, and received experimental Cd additions from 1987 to 1992. In the second year of this study, chlorophyll a and suspended C concentrations in the nutrient-enriched enclosures increased by 6.6 and 3.4 times, respectively, compared to the controls. As a result of increased particulate produced bY the nutrient additions, Cd concentrations in water from the nutrient-enriched enclosures were higher (46-114 ng/L) compared to the controls (23-84 ng/L). Estimated Cd/C concentrations in water were lower in the nutrient-enriched enclosures relative to the controls because of higher particle concentrations. Effects on Cd bioaccumulation were limited even though mesotrophic to eutrophic conditions were reached in the nutrient- enriched enclosures. Trends for lower Cd concentrations in mussels and crayfish from the nutrient-enriched enclosures compared to the controls were observed; however, significant differences were rarely detected. Zooplankton and immature Chironomidae from the nutrient-enriched enclosures had consistently higher Cd concentrations compared to the controls, but significant differences were not detected. Enhanced accumulation of Cd-rich particulate matter by these organisms may account for this trend. Mussels and crayfish accumulated significantly more Cd when exposed in the lake compared to the enclosures. This observation is due to elevated Cd water concentrations in the lake compared to the enclosures because of continued Cd additions to the lake. These results suggest that the water route of exposure is an important pathway for Cd accumulation by these organisms.},
bibtype = {article},
author = {Currie, R. S. and Muir, D. C. G. and Fairchild, W. L. and Holoka, M. H. and Hecky, R. E.},
journal = {Environmental Toxicology and Chemistry},
number = {12}
}
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Lake 382, a small oligotrophic lake, is located within the Experimental Lakes Area in northwestern Ontario, Canada, and received experimental Cd additions from 1987 to 1992. In the second year of this study, chlorophyll a and suspended C concentrations in the nutrient-enriched enclosures increased by 6.6 and 3.4 times, respectively, compared to the controls. As a result of increased particulate produced bY the nutrient additions, Cd concentrations in water from the nutrient-enriched enclosures were higher (46-114 ng/L) compared to the controls (23-84 ng/L). Estimated Cd/C concentrations in water were lower in the nutrient-enriched enclosures relative to the controls because of higher particle concentrations. Effects on Cd bioaccumulation were limited even though mesotrophic to eutrophic conditions were reached in the nutrient- enriched enclosures. Trends for lower Cd concentrations in mussels and crayfish from the nutrient-enriched enclosures compared to the controls were observed; however, significant differences were rarely detected. Zooplankton and immature Chironomidae from the nutrient-enriched enclosures had consistently higher Cd concentrations compared to the controls, but significant differences were not detected. Enhanced accumulation of Cd-rich particulate matter by these organisms may account for this trend. Mussels and crayfish accumulated significantly more Cd when exposed in the lake compared to the enclosures. This observation is due to elevated Cd water concentrations in the lake compared to the enclosures because of continued Cd additions to the lake. These results suggest that the water route of exposure is an important pathway for Cd accumulation by these organisms.","bibtype":"article","author":"Currie, R. S. and Muir, D. C. G. and Fairchild, W. L. and Holoka, M. H. and Hecky, R. 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