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Permanent link (DOI): https://doi.org/10.7939/R33H4G

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The role of fine sediment in phosphorus dynamics and stream productivity in Rocky Mountain headwater streams: Possible long-term effects of logging Open Access

Descriptions

Other title
Subject/Keyword
Logging
Eutrophication
sediment-phosphorus dynamics
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Hawthorn, Kirk Fraser
Supervisor and department
Silins, Uldis (Renewable Resources)
Examining committee member and department
Bladon, Kevin (Renewable Resources)
Devito, Kevin (Biological Sciences)
Stone, Mike (Geography and Environmental Management, University of Waterloo)
Department
Department of Renewable Resources
Specialization
Water and Land Resources
Date accepted
2014-01-24T16:00:43Z
Graduation date
2014-06
Degree
Master of Science
Degree level
Master's
Abstract
Headwater streams in Alberta’s Rocky Mountains are important in regulating aquatic ecosystem function and a range of downstream water resources but are vulnerable to stresses imposed by disturbances including those exerted by logging. The objectives of this research were to determine if the legacy of past forest harvesting impacts could be detected in altered sediment-nutrient dynamics and primary productivity in headwaters in the Rocky Mountains of southwestern Alberta. A descriptive, process-based case study was conducted in an undisturbed-disturbed watershed pair where one watershed had undergone extensive harvesting ending in 1990. The disturbed watershed was found to have higher concentrations of suspended solids and fine streambed material, and considerably greater levels of aqueous and particulate phosphorus (P). Primary productivity was much higher in the disturbed system, likely caused by elevated P levels. This study illustrates the potential for logging disturbance to produce long-lived impacts on stream ecology in critical headwater regions.
Language
English
DOI
doi:10.7939/R33H4G
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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