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A sediment core sample collected from the large Alimini Lake, near Lecce (Italy), covers a time span of 80-90 years, the period being evaluated by analysis of Cs137 profile. The sediment core sample was sliced into 1 cm segments in order to observe the temporal distribution of Cu, Cr, Hg, Mn, Ni, Pb, Zn, C, N and H. For all elements (except Mn and C), a significant increase of concentration has been observed starting at a depth of 24-25cm to around 15cm. Based on sedimentation rates for the lake it can be concluded that this layer was formed during the 1950- 1970's. The increasing element concentrations observed would thus appear to be closely linked to the introduction in those years of industrialisation and more intensive and mechanised agricultural practices in the region of Lecce.

Additional information

Authors: CENCI R M ET AL, European Commission, Joint Research Centre, Institute for Environment and Sustainability, Ispra (IT);BASSET A, Dipartimento di Biologia, Università degli Studi di Lecce (IT);LIGETTA G, Dipartimento di Biologia, Università degli Studi di Lecce (IT)
Bibliographic Reference: An article published in: Fresenius Environmental Bulletin, Volume 11, No. 9b (September 2002), pp.681-685
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