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dc.contributor.advisorSinclair, Norval A.en_US
dc.contributor.authorTurk, Colleen Mary, 1961-
dc.creatorTurk, Colleen Mary, 1961-en_US
dc.date.accessioned2013-05-16T09:31:58Z
dc.date.available2013-05-16T09:31:58Z
dc.date.issued1995en_US
dc.identifier.urihttp://hdl.handle.net/10150/291594
dc.description.abstractOrganic matter amendments have long been known to improve native organic matter content, aggregation and structure of soils. In the laboratory, however, organic matter amendments to autoclaved soils have no such effect. This may explain the failure of many reclamation attempts on mine tailing wastes, which often proceed without regard for the microbiological processes necessary for soil formation and cycling of plant nutrients. In this study, incubation of tailing waste with soil microbes and a simple carbon source proved sufficient to increase the formation of water stable aggregates from tailing particles. Autoclaved control samples showed no change in aggregation. The incorporation of microbial cell mass into the mineral matrix of the tailing was observed using scanning electron microscopy. These results suggest that microbial activity is necessary in order to incorporate organic matter into the abiotic matrix of tailing, promoting aggregation and ultimately soil formation from this material.
dc.language.isoen_USen_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.subjectBiology, Microbiology.en_US
dc.subjectBiogeochemistry.en_US
dc.titleThe effect of microorganisms on soil structure development in copper mine tailingen_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
thesis.degree.grantorUniversity of Arizonaen_US
thesis.degree.levelmastersen_US
dc.identifier.proquest1362205en_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineSoil and Water Scienceen_US
thesis.degree.nameM.S.en_US
dc.identifier.bibrecord.b333056999en_US
refterms.dateFOA2018-06-15T16:36:12Z
html.description.abstractOrganic matter amendments have long been known to improve native organic matter content, aggregation and structure of soils. In the laboratory, however, organic matter amendments to autoclaved soils have no such effect. This may explain the failure of many reclamation attempts on mine tailing wastes, which often proceed without regard for the microbiological processes necessary for soil formation and cycling of plant nutrients. In this study, incubation of tailing waste with soil microbes and a simple carbon source proved sufficient to increase the formation of water stable aggregates from tailing particles. Autoclaved control samples showed no change in aggregation. The incorporation of microbial cell mass into the mineral matrix of the tailing was observed using scanning electron microscopy. These results suggest that microbial activity is necessary in order to incorporate organic matter into the abiotic matrix of tailing, promoting aggregation and ultimately soil formation from this material.


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