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Trace element accumulation and distribution in four aquatic macrophytes.

Zdenka Mazej1, Mateja Germ

  • 1ERICo Velenje, Environmental Research and Industrial Co-operation d.o.o., Koroska 58, 3320 Velenje, Slovenia. zdenka.mazej@erico.si

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|November 29, 2008
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Summary
This summary is machine-generated.

Trace elements in Velenjsko jezero aquatic plants show varied uptake. Arsenic translocates to roots, with limited mobility, while other elements accumulate differently based on species and plant part.

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Area of Science:

  • Environmental Science
  • Aquatic Botany
  • Ecotoxicology

Background:

  • Velenjsko jezero lake contains significant lignite coal ash deposits.
  • Understanding trace element accumulation in aquatic flora is crucial for ecosystem health.

Purpose of the Study:

  • To investigate trace element concentrations in Najas marina, Potamogeton lucens, Nuphar lutea, and Potamogeton nodosus.
  • To analyze trace element distribution in water, sediment, and different plant tissues.
  • To assess the translocation and mobility of trace elements within aquatic plants.

Main Methods:

  • Analysis of trace elements in submersed and floating-leaved aquatic plant species.
  • Concurrent sampling of water and sediment from Velenjsko jezero.
  • Quantification of trace elements in roots, stems, and leaves.

Main Results:

  • Trace element concentrations in water were generally below detection limits.
  • Arsenic (As) concentrations in sediment exceeded European background levels.
  • As showed high translocation to plant roots but limited mobility to above-ground parts.
  • Submersed species (N. marina, P. lucens) had similar trace element levels.
  • Floating-leaved species showed variations: N. lutea had low concentrations, P. nodosus had high concentrations.
  • Arsenic, Nickel (Ni), Lead (Pb), and Chromium (Cr) were higher in roots than in stems/leaves for N. marina, P. lucens, and P. nodosus.
  • Copper (Cu) and Zinc (Zn) were evenly distributed across plant organs.
  • Cr and Ni exhibited notable mobility from roots to upper parts in N. lutea.

Conclusions:

  • Lignite coal ash impacts trace element profiles in Velenjsko jezero sediment and aquatic plants.
  • Plant species and tissue type significantly influence trace element accumulation and translocation.
  • Arsenic poses a localized risk due to root accumulation, while Cr and Ni show potential for wider distribution in certain species.