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Spatially Clustered Movement Patterns and Segregation of Subadult Chinook Salmon within the Salish Sea
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2017
Source: Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science 9(1), 1–12
Details:
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Journal Title:Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science
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Personal Author:
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NOAA Program & Office:
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Description:While Pacific salmon are known for their extensive marine migrations, some species display much more limited alternative patterns, including residence within interior marine waters. To more clearly define the scale of movement of these residents, we used acoustic telemetry to track subadult Chinook Salmon Oncorhynchus tshawytscha caught in and released from discrete areas of the Salish Sea. Their movements were determined from detections at fixed receivers in central Puget Sound, Admiralty Inlet, the San Juan Islands, and the Strait of Juan de Fuca. Cluster analysis of the detections indicated four groups, with much less commonality of movement than might be inferred from the proximity of the tagging locations, which were only tens of kilometers apart. For example, none of the salmon tagged in central Puget Sound were detected in the San Juan Islands and vice versa. Thus, Chinook Salmon occupying central Puget Sound and the San Juan Islands may exhibit different distributions, extents of movement, and degrees of basin fidelity. These results provide information relevant to the management and conservation of this species, which is listed as threatened under the U.S. Endangered Species Act, and whose movements cross the U.S.–Canadian boundary. These findings may also help explain the variation in organic contaminant levels among Puget Sound-origin Chinook Salmon.
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Keywords:
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Source:Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science 9(1), 1–12
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Place as Subject:
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Rights Information:CC BY
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Compliance:Submitted
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Main Document Checksum:urn:sha256:1347492d036a33d5fa85b3aaaf4727f6d7ceb55010a13a66568ce693ae6c681e
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Supporting Files
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