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Permanent link (DOI): https://doi.org/10.7939/R39M7H

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Influence of Soil Cap Depth and Vegetation on Reclamation of Phosphogypsum Stacks in Fort Saskatchewan, Alberta Open Access

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Other title
Subject/Keyword
metal deposition
water
metal uptake
snow metal
phosphogypsum
vegetation
soil
reclamation
soil cap
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Turner, Elizabeth Lenore
Supervisor and department
Dr. M. Anne Naeth, Renewable Resources
Dr. David S. Chanasyk, Renewable Resources
Examining committee member and department
Dr. Connie Nichol, Renewable Resources, works at Agrium Inc.
Dr. Miles Dyck, Renewable Resources
Dr. James Unterschultz, Resource Economics and Environmental Sociology
Department
Department of Renewable Resources
Specialization
Land Reclamation and Remediation
Date accepted
2013-01-22T14:52:05Z
Graduation date
2013-06
Degree
Master of Science
Degree level
Master's
Abstract
This study quantified environmental parameters to develop reclamation strategies for phosphogypsum stacks. Research was conducted on phosphogypsum stack experimental plots established in 2006 (6 soil cap depths, 5 vegetation treatments), and soil capped slopes seeded in 1998. Significant root mass accumulations occurred at soil-phosphogypsum interfaces with 8, 15, 30 and 46 cm caps in 50% of cores. Peak water content occurred at this interface with all cap depths in fall 2010; trends differed in 2011. Maximum rooting depth increased with increased cap depth, root biomass did not. Vegetation performed better in capped than uncapped plots; cap depths ≥ 15 cm supported healthy vigorous plants. Vegetation on stacks had elevated fluorine, cobalt and nickel; plants from cap depths ≥ 8 cm had tissue concentrations safe for animal consumption. Snow metal concentrations increased with proximity to a neighbouring metal refinery. Nineteen years after capping and seeding stack slopes had 35 plant species.
Language
English
DOI
doi:10.7939/R39M7H
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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File size: 3407970
Last modified: 2015:10:12 17:24:40-06:00
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File author: Lenore
Page count: 172
File language: en-CA
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