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

Journal Article


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.

Authors


  •   Stromsoe, Nicola (external author)
  •   Callow, J Nikolaus. (external author)
  •   McGowan, Hamish A. (external author)
  •   Marx, Sam K.

Publication Date


  • 2013

Citation


  • Stromsoe, N., Callow, J. Nikolaus., McGowan, H. A. & Marx, S. K. (2013). Attribution of sources to metal accumulation in an alpine tarn, the Snowy Mountains, Australia. Environmental Pollution, 181 133-143.

Scopus Eid


  • 2-s2.0-84880274357

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/996

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 133

End Page


  • 143

Volume


  • 181

Place Of Publication


  • United Kingdom

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.

Authors


  •   Stromsoe, Nicola (external author)
  •   Callow, J Nikolaus. (external author)
  •   McGowan, Hamish A. (external author)
  •   Marx, Sam K.

Publication Date


  • 2013

Citation


  • Stromsoe, N., Callow, J. Nikolaus., McGowan, H. A. & Marx, S. K. (2013). Attribution of sources to metal accumulation in an alpine tarn, the Snowy Mountains, Australia. Environmental Pollution, 181 133-143.

Scopus Eid


  • 2-s2.0-84880274357

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/996

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 133

End Page


  • 143

Volume


  • 181

Place Of Publication


  • United Kingdom