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Göteborgs universitets publikationer

Effects of treated wastewater irrigation on size-structure, biochemical products and mineral content of native medicinal shrubs

Författare och institution:
Emad Farahat (Institutionen för geovetenskaper); Hans Linderholm (Institutionen för geovetenskaper)
Publicerad i:
Ecological Engineering: The Journal of Ecosystem Restoration, 60 s. 235-241
Artikel, refereegranskad vetenskaplig
Sammanfattning (abstract):
tThe aim of this study is to evaluate the impact of treated wastewater irrigation on five native medic-inal shrubs (Artemisia monosperma, Zilla spinosa, Farsetia aegyptiaca, Deverra tortuosa and Calligonumpolygonoides) in abandoned areas of a desert plantation in Egypt. Mineral content, size-structure andbiochemical products of shrub shoot samples were determined for the plantation and an adjacent,non-irrigated control site outside the forest. We found that the application of wastewater significantlyincreased trace metal concentrations (Cd, Cu, Mn, Ni and Pb) in the plantation-soil compared to the control,showing phytotoxic concentrations of Ni. Each shrub species showed different selectivity to accumulatespecific elements in their shoots, with high concentrations of N, P, K, Mn, Zn, Ni, Cu, Cd and Pb in forest siteplants. Cd and Ni concentrations in shoot samples from both the planation and control sites were about13 and 500 times above permissible levels, respectively. Our results suggest that native medicinal shrubsirrigated by wastewater may not be safe for medicinal use or grazing purposes and represent potentialrisks. More efforts should be directed to monitor the potential hazards of using wastewater irrigation onall components of the ecosystem.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
Geovetenskap och miljövetenskap
Geovetenskap och miljövetenskap ->
Multidisciplinär geovetenskap
Wastewater, Native medicinal shrubs, Plantation forest, Size structure, Biochemical products, Trace metalsa
Postens nummer:
Posten skapad:
2013-09-16 12:40
Posten ändrad:
2013-09-16 14:39

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