2019
DOI: 10.5194/hess-2019-438
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Ionic aluminium concentrations exceed thresholds for aquatic health in Nova Scotian rivers

Abstract: Abstract. Cationic aluminium species are toxic to terrestrial and aquatic life. Despite decades of acid emission reductions, accumulating evidence shows that freshwater acidification recovery is delayed in locations such as Nova Scotia, Canada. Further, spatial and temporal patterns of labile cationic forms of aluminium (Ali) remain poorly understood. Here we increase our understanding of Ali spatial and temporal patterns by measuring Ali concentrations in ten streams in acid-sensitive areas of Nova Scotia ove… Show more

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Cited by 1 publication
(12 citation statements)
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“…To our knowledge, this threshold-dependent decoupling has not been identified in prior research, possibly because base cation concentrations are above Ca ≈ 1.4 mg L –1 and Mg ≈ 0.6 mg L –1 in many other areas. , This threshold-dependent decoupling may become more widespread in the future due to regionally declining Ca concentrations. , Because stronger decoupling is associated with higher Al concentrations, more rivers may become at risk for elevated Al concentrations.…”
Section: Resultsmentioning
confidence: 80%
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“…To our knowledge, this threshold-dependent decoupling has not been identified in prior research, possibly because base cation concentrations are above Ca ≈ 1.4 mg L –1 and Mg ≈ 0.6 mg L –1 in many other areas. , This threshold-dependent decoupling may become more widespread in the future due to regionally declining Ca concentrations. , Because stronger decoupling is associated with higher Al concentrations, more rivers may become at risk for elevated Al concentrations.…”
Section: Resultsmentioning
confidence: 80%
“…Field speciated Al data are available for five of our study rivers. We compared our modeled Al imono concentrations to these data which were collected between 2015 and 2018 for the Mersey River, Pine Marten Brook, and Moose Pit Brook and in 2006 for the Tusket River, Mersey River, and LaHave River …”
Section: Methodsmentioning
confidence: 99%
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