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dc.contributor.authorGil-Loaiza, Juliana
dc.contributor.authorWhite, Scott A
dc.contributor.authorRoot, Robert A
dc.contributor.authorSolís-Dominguez, Fernando A
dc.contributor.authorHammond, Corin M
dc.contributor.authorChorover, Jon
dc.contributor.authorMaier, Raina M
dc.date.accessioned2019-07-03T18:39:23Z
dc.date.available2019-07-03T18:39:23Z
dc.date.issued2016-09-15
dc.identifier.citationGil-Loaiza, J., White, S. A., Root, R. A., Solís-Dominguez, F. A., Hammond, C. M., Chorover, J., & Maier, R. M. (2016). Phytostabilization of mine tailings using compost-assisted direct planting: Translating greenhouse results to the field. Science of the Total Environment, 565, 451-461.en_US
dc.identifier.issn1879-1026
dc.identifier.pmid27183459
dc.identifier.doi10.1016/j.scitotenv.2016.04.168
dc.identifier.urihttp://hdl.handle.net/10150/633291
dc.description.abstractStandard practice in reclamation of mine tailings is the emplacement of a 15 to 90 cm soil/gravel/rock cap which is then hydro-seeded. In this study we investigate compost-assisted direct planting phytostabilization technology as an alternative to standard cap and plant practices. In phytostabilization the goal is to establish a vegetative cap using native plants that stabilize metals in the root zone with little to no shoot accumulation. The study site is a barren 62-hectare tailings pile characterized by extremely acidic pH as well as lead, arsenic, and zinc each exceeding 2000 mg kg(-1). The study objective is to evaluate whether successful greenhouse phytostabilization results are scalable to the field. In May 2010, a 0.27 ha study area was established on the Iron King Mine and Humboldt Smelter Superfund (IKMHSS) site with six irrigated treatments; tailings amended with 10, 15, or 20% (w/w) compost seeded with amix of native plants (buffalo grass, arizona fescue, quailbush, mountain mahogany, mesquite, and catclaw acacia) and controls including composted (15 and 20%) unseeded treatments and an uncomposted unseeded treatment. Canopy cover ranging from 21 to 61% developed after 41 months in the compost-amended planted treatments, a canopy cover similar to that found in the surrounding region. No plants grew on unamended tailings. Neutrophilic heterotrophic bacterial counts were 1.5 to 4 orders of magnitude higher after 41 months in planted versus unamended control plots. Shoot tissue accumulation of various metal(loids) was at or below Domestic Animal Toxicity Limits, with some plant specific exceptions in treatments receiving less compost. Parameters including % canopy cover, neutrophilic heterotrophic bacteria counts, and shoot uptake of metal(loids) are promising criteria to use in evaluating reclamation success. In summary, compost amendment and seeding, guided by preliminary greenhouse studies, allowed plant establishment and sustained growth over 4 years demonstrating feasibility for this phytostabilization technology. (C) 2016 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipNIEHS Superfund Research Program [2 P42 ES04940]en_US
dc.language.isoenen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.relation.urlhttps://www.sciencedirect.com/science/article/pii/S0048969716308701?via%3Dihuben_US
dc.rights© 2016 Elsevier B.V. All rights reserved.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectDirect plantingen_US
dc.subjectFertility islandsen_US
dc.subjectMine tailingsen_US
dc.subjectPhytoremediationen_US
dc.subjectPhytostabilizationen_US
dc.titlePhytostabilization of mine tailings using compost-assisted direct planting: Translating greenhouse results to the fielden_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Soil Water & Environm Scien_US
dc.identifier.journalSCIENCE OF THE TOTAL ENVIRONMENTen_US
dc.description.note24 month embargo; published online: 13 May 2016en_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal accepted manuscripten_US
dc.source.journaltitleThe Science of the total environment
refterms.dateFOA2018-05-13T00:00:00Z


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