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Permanent link (DOI): https://doi.org/10.7939/R3V65K

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Microbial communities in organic substrates used for oil sands reclamation and their link to boreal seedling growth Open Access

Descriptions

Other title
Subject/Keyword
phospholipid fatty acids
rhizosphere
stable isotope probing
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Beasse, Mark L
Supervisor and department
Quideau, Sylvie (Renewable Resources)
Examining committee member and department
Spaner, Dean (Agriculture, Food and Nutritional Science)
Siddique, Tariq (Renewable Resources)
Department
Department of Renewable Resources
Specialization
Soil Science
Date accepted
2012-09-27T14:41:35Z
Graduation date
2012-09
Degree
Master of Science
Degree level
Master's
Abstract
Soil reconstruction in the Athabasca oil sands region utilises forest floor and peat materials as surface organic amendments to help reclaim decommissioned mine sites to upland boreal forests. The objective of this study was to characterize the microbial community in these two organic materials, and to determine the relationships between two boreal tree seedlings, aspen (Populus Tremuloides Michx.) and alder (Alnus crispa Ait), and their respective rhizosphere microbial communities. The forest floor exhibited a greater basal respiration than the peat, and a distinct microbial community structure as seen with phospholipid fatty acid analysis. Stable isotope probing showed greater carbon flow between trees and their rhizosphere communities when seedlings were grown in forest floor material. However, only the alder seedlings demonstrated correspondingly greater growth in the forest floor material. These results suggest that forest floor material fosters a microbial community which interacts more closely with boreal tree seedlings than peat does.
Language
English
DOI
doi:10.7939/R3V65K
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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