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British Columbia Mine Reclamation Symposium
Revegetation restoration for culvert replacement in a wetland Ashenhurst, Amber; Polzin, Mary Louise
Abstract
Impacts from industrial activities in and near sensitive wetlands and streams receive considerable attention resulting in a wide variety of environmental protection techniques. This paper examines impact mitigation to a small stream (Palmer Bar Creek, East Kootenay) and surrounding wetlands during a train crossing culvert replacement and decommissioning. Prior to the placement of fill and construction of working platforms for heavy equipment, wetland soil was removed and temporarily stockpiled. Once work was complete, the temporary fill was removed and the native soil was replaced. Revegetation of the disturbed areas involved a combination of transplanting species from the immediate undisturbed wetland and planting nursery stock of native species identified in the area. Restoration of the temporary access road included placement of randomly spaced large boulders along the road and seeding with a mixture of agronomic grasses and legumes to reduce overland flow erosion during large rain events. Seeding also reduced the likelihood of noxious weed establishment from the undisturbed upland habitat. The replacement of the stockpiled wetland soil provided an excellent growth medium resulting in 99.5% survival and mean growth of 30 cm for woody species of nursery stock the following year.
Item Metadata
Title |
Revegetation restoration for culvert replacement in a wetland
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Creator | |
Contributor | |
Date Issued |
2010
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Description |
Impacts from industrial activities in and near sensitive wetlands and streams receive considerable
attention resulting in a wide variety of environmental protection techniques. This paper examines impact
mitigation to a small stream (Palmer Bar Creek, East Kootenay) and surrounding wetlands during a train
crossing culvert replacement and decommissioning. Prior to the placement of fill and construction of
working platforms for heavy equipment, wetland soil was removed and temporarily stockpiled. Once
work was complete, the temporary fill was removed and the native soil was replaced. Revegetation of the
disturbed areas involved a combination of transplanting species from the immediate undisturbed wetland
and planting nursery stock of native species identified in the area. Restoration of the temporary access
road included placement of randomly spaced large boulders along the road and seeding with a mixture of
agronomic grasses and legumes to reduce overland flow erosion during large rain events. Seeding also
reduced the likelihood of noxious weed establishment from the undisturbed upland habitat. The
replacement of the stockpiled wetland soil provided an excellent growth medium resulting in 99.5%
survival and mean growth of 30 cm for woody species of nursery stock the following year.
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Genre | |
Type | |
Language |
eng
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Date Available |
2010-11-30
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0042577
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URI | |
Affiliation | |
Peer Review Status |
Unreviewed
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Scholarly Level |
Unknown
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Copyright Holder |
British Columbia Technical and Research Committee on Reclamation
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Rights URI | |
Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International