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Permanent link (DOI): https://doi.org/10.7939/R39G5GM3P

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Oil Sands Reclamation With Woody Debris Using LFH Mineral Soil Mix And Peat Mineral Soil Mix Cover Soils: Impacts On Select Soil And Vegetation Properties Open Access

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Other title
RECLAIMED OIL SANDS: WOODY DEBRIS, LFH, PEAT
Subject/Keyword
vegetation
cover
soil water content
peat mineral soil mix
application rate
species richness
soil
LFH mineral soil mix
species diversity
reclamation
woody debris
volume
soil temperature
oil sands
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Forsch, Katryna B C
Supervisor and department
Naeth, M. Anne (Renewable Resources)
Examining committee member and department
Chanasyk, David (Renewable Resources)
Belland, Rene (Renewable Resources)
Chang, Scott (Renewable Resources)
Department
Department of Renewable Resources
Specialization
Land Reclamation and Remediation
Date accepted
2014-07-09T11:40:42Z
Graduation date
2014-11
Degree
Master of Science
Degree level
Master's
Abstract
Prior to mining oil sands, soil is salvaged for reclamation and forest stands are harvested for their merchantable timber. Harvest operations leave large amounts of residual woody debris, which has been historically burned or mulched. Woody debris has significant ecological effects and can be used as an amendment to facilitate reclamation in the oil sands. Influences of woody debris and soil cover types on select soil and vegetation properties were examined in years four and five after reclamation on a Suncor Energy Inc. overburden dump. Treatments consisted of no woody debris, black spruce woody debris or trembling aspen woody debris on LFH mineral soil mix or peat mineral soil mix soil covers. Soil properties assessed were near surface temperature, volumetric water content, plant available nutrients, total inorganic and organic carbon, total nitrogen, carbon to nitrogen ratio, sodium adsorption ratio, electrical conductivity, pH, texture and bulk density. Vegetation properties assessed were canopy cover, ground cover, vascular and non vascular species composition, richness, diversity and woody plant density. Woody debris volume and cover was assessed to determine application rates to provide optimal effects on vegetation establishment and soil properties. Soil chemical and physical properties and volumetric water content were significantly affected by soil cover type. Woody debris and its size class contributed to regulating soil temperature. Woody debris continued to play a role in greater canopy cover for select vegetation properties; however, soil cover type had a more pronounced effect on various vegetation cover parameters, plant species richness, plant species composition and woody plant density. Woody debris volume application rates of 32.0 to 117.9 m3/ha did not have negative effects on plant community development. Results show a continual positive relationship between woody debris and cover with soil and vegetation development in year five post reclamation, demonstrating the promotion of ecological succession on this disturbed landscape.
Language
English
DOI
doi:10.7939/R39G5GM3P
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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