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UBC Theses and Dissertations
Compass orientation in migrating Fraser River sockeye salmon Dat, Claire Germaine
Abstract
Three numerical models were used to investigate whether compass orientation is an effective guidance mechanism for sockeye salmon migrating to the Fraser River from the open ocean. Daily surface ocean currents, simulated by the Ocean Surface Currents Simulations (OSCURS) model, were used in each model to test the influence of currents on the return oceanic migration of the Fraser River sockeye salmon. The high seas tagging and coastal recovery data of the Fraser River sockeye salmon were used for the migration simulations. The Fraser River sockeye salmon were shown to move in a northeastward direction during the first phase of their oceanic return migration and in a southeastward direction during the second phase of their migration. The surface daily currents were shown to increase the speed of the homeward migrating sockeye salmon. Most importantly, compass orientation alone was shown to be a possible orientation mechanism for the Fraser River sockeye salmon.
Item Metadata
Title |
Compass orientation in migrating Fraser River sockeye salmon
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1994
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Description |
Three numerical models were used to investigate whether compass orientation is an
effective guidance mechanism for sockeye salmon migrating to the Fraser River from the open
ocean. Daily surface ocean currents, simulated by the Ocean Surface Currents Simulations
(OSCURS) model, were used in each model to test the influence of currents on the return oceanic
migration of the Fraser River sockeye salmon. The high seas tagging and coastal recovery data of
the Fraser River sockeye salmon were used for the migration simulations.
The Fraser River sockeye salmon were shown to move in a northeastward direction
during the first phase of their oceanic return migration and in a southeastward direction during the
second phase of their migration. The surface daily currents were shown to increase the speed of
the homeward migrating sockeye salmon. Most importantly, compass orientation alone was
shown to be a possible orientation mechanism for the Fraser River sockeye salmon.
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Extent |
2072268 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-02-28
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0053154
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1994-11
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.