Attribution of sources to metal accumulation in an alpine tarn, the Snowy Mountains, Australia

Nicola Stromsoe, J. Nikolaus Callow, Hamish A. McGowan, Samuel K. Marx

Research output: Contribution to journalArticleResearchpeer-review

Abstract

This study analyses 1800 years of heavy metal accumulation in a remote alpine lake experiencing long-range atmospheric contamination and additional inputs of Ag from cloud seeding. In comparison to previous work undertaken on peats, lake sediments show limited post-industrial metal enrichment with enrichment factors of Ag: 1.3, Pb: 1.3, Zn: 1.1, Cu: 1.2 compared to Ag: 2.2, Pb: 3.3, Zn: 2.1, Cu: 4.1 for peat. We show this to be the result of substantial fluvial lithogenic flux of metals (92-97% of total metal flux) to the lake. Total annual metal flux to the lake ranges from: Ag: 4-12 ng/cm2/yr to Zn: 3 383-11 313 ng/cm2/yr. As a result, any contribution of cloud seeding to additional enrichment of Ag in lake sediments is considered negligible. Results show that metal enrichment is not necessarily ubiquitous through a landscape. This has implications for predicting the impacts of atmospheric metal pollution to complex environmental systems.

Original languageEnglish
Pages (from-to)133-143
Number of pages11
JournalEnvironmental Pollution
Volume181
DOIs
Publication statusPublished - Oct 2013
Externally publishedYes

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Lakes
Metals
Cloud seeding
Fluxes
Sediments
Peat
Heavy Metals
Heavy metals
Pollution
Contamination
Soil

Cite this

Stromsoe, Nicola ; Callow, J. Nikolaus ; McGowan, Hamish A. ; Marx, Samuel K. / Attribution of sources to metal accumulation in an alpine tarn, the Snowy Mountains, Australia. In: Environmental Pollution. 2013 ; Vol. 181. pp. 133-143.
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abstract = "This study analyses 1800 years of heavy metal accumulation in a remote alpine lake experiencing long-range atmospheric contamination and additional inputs of Ag from cloud seeding. In comparison to previous work undertaken on peats, lake sediments show limited post-industrial metal enrichment with enrichment factors of Ag: 1.3, Pb: 1.3, Zn: 1.1, Cu: 1.2 compared to Ag: 2.2, Pb: 3.3, Zn: 2.1, Cu: 4.1 for peat. We show this to be the result of substantial fluvial lithogenic flux of metals (92-97{\%} of total metal flux) to the lake. Total annual metal flux to the lake ranges from: Ag: 4-12 ng/cm2/yr to Zn: 3 383-11 313 ng/cm2/yr. As a result, any contribution of cloud seeding to additional enrichment of Ag in lake sediments is considered negligible. Results show that metal enrichment is not necessarily ubiquitous through a landscape. This has implications for predicting the impacts of atmospheric metal pollution to complex environmental systems.",
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Attribution of sources to metal accumulation in an alpine tarn, the Snowy Mountains, Australia. / Stromsoe, Nicola; Callow, J. Nikolaus; McGowan, Hamish A.; Marx, Samuel K.

In: Environmental Pollution, Vol. 181, 10.2013, p. 133-143.

Research output: Contribution to journalArticleResearchpeer-review

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