Mortality, Movements, and Migration Timing of Age-0 Cowichan Chinook Salmon Tagged in the Southern Gulf Islands in Fall 2017 ...

• Main Author: Ocean Tracking Network Data Centre
• Format: Dataset
• Language: English
• Published: Ocean Tracking Network 2018
• Subjects: ACOUSTIC TAGS; EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > FISH; Occurrence; Samplingevent; harbour seal
• Online Access: https://dx.doi.org/10.14286/taxwpz; https://members.oceantrack.org/ipt/resource?r=otnkrsmortality_movements

This is the OBIS extraction of the Ocean Tracking Network and Kintama Research Services (KRS) Mortality, Movements, and Migration Timing of Age-0 Cowichan Chinook Salmon Tagged in the Southern Gulf Islands in Fall 2017, consisting of the release tagging metadata, i.e. the location and date when the tagged animal was released, and summarized detection events of tagged individuals. If readers are interested in the source dataset they may also inquire with the project PIs as listed here or on the OTN web site (https://members.oceantrack.org/project?ccode=NEP.CCSALMON). ... : Abstract:Similar to other Chinook populations in the Salish Sea, the Cowichan River Chinook population has declined precipitously since the 1990s. Previous studies have tracked Salish Sea populations of Chinook during the winter and fall months and found that juvenile Chinook likely either remain resident in the Salish Sea beyond the time when they were tracked, or suffer very high mortality. In late summer 2017, we tested these hypotheses by acoustic-tagging 80 age-0 wild and hatchery Chinook salmon (>140 mm FL) resident near the outlet of the Cowichan River in Maple Bay and Sansum Narrows. The fish were captured using microtrolling and then released near their capture locations after tagging. Mobile tracking was conducted for 10 days in September after tagging was completed, and sporadically throughout the fall. We will track their migration until spring 2018 with an array of special-purpose, short-term, receivers deployed to the north and south of the capture and release areas and at two harbour seal ...