The scale of ecological restoration: restoring steelhead habitat in the Oktwanch Watershed, Vancouver Island, B.C.
Heckels, Alexander Robert Lee Greene (author)
Ives, Kim (thesis advisor)
Henault, Lisa (committee member)
British Columbia Institute of Technology School of Construction and the Environment (Degree granting institution)
Simon Fraser University Faculty of Environment (Degree granting institution)
© Alexander Heckels , 2022. All rights reserved. No part of this work covered by the copyright heron may be reproduced or used in any form or by any means – graphics, electronic, or mechanical including photocopying, taping, or information storage and retrieval systems – without written permission of the author.http://creativecommons.org/licenses/by-nc-nd/4.0/
British Columbia Institute of Technology
Forestry practices are thought to be the major cause of degraded salmonid habitat and declining steelhead populations in the Oktwanch River on Vancouver Island. Large woody debris installations and channel modifications were completed in Reach 1 of the Oktwanch River and adjacent side channels in 2001 to provide spawning and rearing habitat for multiple salmonid species and prevent further degradation, but were ultimately unsuccessful. This study investigated if watershed-scale restoration, rather than reach-scale, is necessary to restore this habitat for steelhead in the Oktwanch River indefinitely. This was achieved through an assessment of fish habitat in Reach 1 of the Oktwanch River and adjacent side channels and spatial analysis of the Oktwanch watershed using Landsat historical aerial imagery and i-Tree Canopy. The findings from this study suggest watershed-scale changes to forestry practices are required to restore steelhead populations in the Oktwanch River.
woody debris installations
Fishes -- Habitat -- Conservation
Ecological Restoration Program
Vancouver Island (B.C.)
Master of Science