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precedente: S5.8
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livello superiore: S5
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seguente: S6
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S5.9 - Effect of increasing concentrations of copper on soil microbial
community
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D'Ascoli Rosaria (1)*,
De Pascale Raffaele Ariangelo (1),
Russi Francesco Pio (1),
Marzaioli Rossana (1),
Rutigliano Flora Angela (1)
| (1) |
Dipart. di Scienze Ambientali, Seconda Università degli Studi
di Napoli, Via Vivaldi 43, 81100 Caserta, Italia |
| * |
rosaria.dascoli@unina2.it |
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Contrasting effects of heavy metals on soil biological and biochemical
properties have been reported in literature for field study, because spatial
and/or temporal variations of soil ecological factors (as temperature,
moistness, nutrient or organic carbon content) can affect so largely the
growth and the activity of soil microbial community that they may minimize the
effect of heavy metals. Therefore, it can be useful to carry out laboratory
studies under controlled conditions to test the effect of heavy metal
contamination on soil microbial community. The aim of this work was to test
the long-term effects, on microbial growth and soil activity, of Cu(II)
addition to a soil with a initial low content of Cu (38 mg kg-1). The
soil was sampled in a chestnut wood within Solofrana valley (southern Italy)
and incubated under standard conditions (25
, 55% WHC, in the dark)
after addition of copper sulphate solution in order to obtain increasing Cu
concentrations in the soil (0, 10, 50, 100, 500, 1,000, 5,000 mg Cu
kg-1). Results showed that active fungal mycelium was reduced in all
contaminated soils, whereas total fungal mycelium and microbial biomass were
affected by higher values of Cu contamination (i.e. 500, 1,000 and 5,000 mg Cu
kg-1). A middle effect was detected for soil activity, showing a
reduction for an addition of 100 mg Cu kg-1 to soil or higher.
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consulta l' Indice analitico (alfabetico per autore) |
sfoglia l' Indice delle sessioni del Congresso |
a cura di Comoglio, Comino, e Bona
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