Seasonal and spatial patterns of metals at a restored copper mine site II. Copper in riparian soils and Bromus carinatus shoots

Environmental Pollution
Wendy K SilkPeter G Green

Abstract

Soil and plants were sampled throughout winter and spring near a perennial stream traversing a restored mine site in a winter-rainy climate. Within 1m of an acidic reach of the stream, soil had pH 3-5 and 50-100 microg/g "bioavailable" copper (extractable with 0.01 M CaCl2). Soil 2-3 m from the stream had pH 5-8 and lower (less than 3 microg/g) bioavailable copper. "Oxide-bound" copper (extractable with 2N HCl) was 50-100 microg/g at most locations. Copper concentrations in the shoots of field-collected Bromus carinatus declined from 20 microg/g in winter to 2 microg/g in spring at all sampling sites. A similar temporal pattern was found in plants grown under controlled conditions. Thus B. carinatus has a developmental program for control of shoot copper concentration, causing a seasonally-varying pattern of copper phytoaccumulation over a large range of copper availability in the soil.

References

Jul 1, 2004·Environmental Science & Technology·Karine FlogeacMichel Aplincourt
May 1, 2003·FEMS Microbiology Ecology·Brett J Baker, Jillian F Banfield

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Citations

Aug 11, 2010·Environmental Geochemistry and Health·Guangyong GuoPei Zhou
Oct 25, 2007·Geochemical Transactions·Clinton D ChurchR Blaine McCleskey
May 9, 2006·Environmental Pollution·Dustin G BambicWendy K Silk
Nov 9, 2016·Chemosphere·Mayerly Alexandra Oyuela LeguizamoMartha Cecilia Gutiérrez Sarmiento
Nov 5, 2013·Metallomics : Integrated Biometal Science·Alain ManceauKathryn L Nagy

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