Effects of logging-induced sediment loading on Chinook salmon rearing habitat in Tranquil Estuary, BC and implications for estuary restoration
Spice, Christine (author)
Ashley, Ken (thesis advisor)
British Columbia Institute of Technology School of Ecological Restoration (Degree granting institution)
Simon Fraser University Faculty of Environment (Degree granting institution)
© Christine Spice, 2020. 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.
British Columbia Institute of Technology
Research on estuaries has increased in recent years, however, the effects of logging on estuaries and the effects of estuary habitat loss on Chinook salmon (Oncorhynchus tshawytscha) in the Pacific northwest is limited. To address habitat loss associated with logging, I used an extensive aerial photo record for Tranquil Creek estuary and an unlogged control to analyze changes in salt marsh area, elevation and volume, supplemented with a grain size distribution analysis. While I failed to find evidence of a difference between a logged and an unlogged estuary, some negative trends in salt marsh area and elevation observed over the observational period were indicative of changes that are unfavorable for juvenile Chinook salmon. Analytical methods presented here to assess changes in two remote coastal estuaries has contributed to the current knowledge on the effects of logging on estuarine ecosystems in coastal BC and provide tools for innovative estuary habitat restoration.
aerial photograph analysis
Chinook salmon (Oncorhynchus tshawytscha)
Salt marsh ecology
Master of Science