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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Short summary
Wild salmon numbers in Nova Scotia, Canada, have been plummeting in recent decades. In 2014, we launched an ionic aluminium monitoring program in Nova Scotia to see if this toxic element was a threat to salmon populations. We found that all 10 monitored rivers had ionic aluminium concentrations that exceeded the threshold for aquatic health. Our results demonstrate that elevated aluminium still threatens aquatic ecosystems and that delays in recovery from acid rain remains a critical issue.
HESS | Articles | Volume 24, issue 10
Hydrol. Earth Syst. Sci., 24, 4763–4775, 2020
https://doi.org/10.5194/hess-24-4763-2020
Hydrol. Earth Syst. Sci., 24, 4763–4775, 2020
https://doi.org/10.5194/hess-24-4763-2020

Research article 05 Oct 2020

Research article | 05 Oct 2020

Ionic aluminium concentrations exceed thresholds for aquatic health in Nova Scotian rivers, even during conditions of high dissolved organic carbon and low flow

Shannon M. Sterling et al.

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Latest update: 19 Jan 2021
Publications Copernicus
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Short summary
Wild salmon numbers in Nova Scotia, Canada, have been plummeting in recent decades. In 2014, we launched an ionic aluminium monitoring program in Nova Scotia to see if this toxic element was a threat to salmon populations. We found that all 10 monitored rivers had ionic aluminium concentrations that exceeded the threshold for aquatic health. Our results demonstrate that elevated aluminium still threatens aquatic ecosystems and that delays in recovery from acid rain remains a critical issue.
Citation