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Number and activity of microorganisms in bauxite mine soil

Brojnost i aktivnost mikroorganizama u zemljištima rudnika boksita

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Authors
Golić, Zorica
Raičević, Vera
Jovanović, Ljubinko
Antić-Mladenović, Svetlana
Kiković, Dragan
Article (Published version)
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Abstract
Mine exploitation often produce heavy divested soils without any vegetation and biological potential. However, the most mine soils contents heavy metals too. In this study first we were investigate the metal contents in soil, water and plants samples taken from bauxite mine in Milici (B&H) at two locations. Results showed that total contents of Ni (50.4 - 99.2) and Cr (10.6-209.6 mg/kg) in the soil samples exceeded their maximum allowed for unpolluted soils. Such divested lands could be biological active only if the different microorganisms are present in a soil as a first step in recultivation. Due its, dominantly systematic group of microorganisms were determined. Results showed that bacterial populations were highest in the rhizosphere (21.6 x 105 - 91 x 105). Lower content of bacterial populations were found in the water samples (5.3 x104 - 14 x 104). Activity of the enzyme dehydrogenize (as soil healthy indicator) was highest in the mud samples (33.62 μgTPF/l0gr).
Eksploatacijom uglja se često dobijaju jako osiromašena zemljišta bez vegetacije i biološkog potencijala. Pored toga, većina ovih zemljišta sadrži i teške metale. U ovom istraživanju je prvenstveno analiziran sadržaj metala u uzorcima zemljišta, vode i biljaka koji su uzeti sa dve lokacije iz okoline rudnika boksita u Milićima (BiH). Rezultati analize su pokazali da je ukupan sadržaj Ni (50.4-99.2) i Cr (10.6-209.6 mg/kg) u uzorcima zemljišta prelazio maksimalne dozvoljene količine za nezagađena zemljišta. Ovako osiromašena zemljišta mogu biti biološki aktivna samo u slučaju da su u njima prisutni drugačiji mikroorganizmi, što predstavlja prvi korak u rekultivaciji ovih zemljišta. Zbog toga su određene dominantne sistematske grupe mikroorganizama. Rezultati su pokazali da su bakterijske populacije bile najbrojnije u rizosferi (21.6xl05-91xl05). Niže koncentracije bakterijskih populacija su nađene u uzorcima vode (5.3x10 -14x10 ). Najveća dehidrogenazna aktivnost (kao indikatora zdravst...venog stanja zemljišta) je bila u uzorcima mulja (33.62 μgTPF/l0gr).

Keywords:
microorganisms / heavy metal / rhizosphere / bauxite mine
Source:
Zemljište i biljka, 2006, 55, 3, 203-210
Publisher:
  • Unija bioloških naučnih društava Jugoslavije, Beograd

ISSN: 0514-6658

[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_agrospace_1148
URI
http://aspace.agrif.bg.ac.rs/handle/123456789/1148
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