Description
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 haul-outs. The existing POST sub-arrays in the Strait of Juan de Fuca, Northern Strait of Georgia, and Discovery Islands will allow us to determine if fish remain the Salish Sea over winter. In addition to the acoustic tag, fish were implanted with a PIT tag which can ultimately be used to estimate smolt to adult survival back to the Cowichan River. Finally, we collected gill and scale samples for genetic stock dentification and to investigate infectious agents that might be present in tagged fish.i
Data Records
The data in this sampling event resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 18,812 records.
2 extension data tables also exist. An extension record supplies extra information about a core record. The number of records in each extension data table is illustrated below.
This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.
Versions
The table below shows only published versions of the resource that are publicly accessible.
How to cite
Researchers should cite this work as follows:
Welch, D., Rechisky, E., Duguid, W., Porter, A., Winchell, P., Pellet, K., Juanes, F., Miller-Saunders, K., Neville, C. 2018. Mortality, Movements, and Migration Timing of Age-0 Cowichan Chinook Salmon Tagged in the Southern Gulf Islands in Fall 2017.. Accessed via the Ocean Tracking Network OBIS IPT on INSERT DATE
Rights
Researchers should respect the following rights statement:
The publisher and rights holder of this work is Ocean Tracking Network. This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.
GBIF Registration
This resource has not been registered with GBIF
Keywords
ACOUSTIC TAGS; EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > FISH; Occurrence; Samplingevent
External data
The resource data is also available in other formats
| Mortality, Movements, and Migration Timing of Age-0 Cowichan Chinook Salmon Tagged in the Southern Gulf Islands in Fall 2017 | https://members.oceantrack.org/project?ccode=NEP.CCSALMON ASCII HTM |
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Contacts
- Originator ●
- Point Of Contact
- Principal Investigator
http://orcid.org/0000-0001-8851-5436
- Custodian Steward
- Content Provider
- Content Provider
- Content Provider
- Content Provider
Geographic Coverage
BC
| Bounding Coordinates | South West [48.69, -123.63], North East [48.92, -123.47] |
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Taxonomic Coverage
Species included below are tagged by this project and have left any embargo. Other individuals or species may later be appended to this dataset.
| Species | Oncorhynchus tshawytscha (Chinook salmon) |
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Temporal Coverage
| Start Date / End Date | 2017-01-01 / 2018-12-31 |
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Project Data
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 haul-outs. The existing POST sub-arrays in the Strait of Juan de Fuca, Northern Strait of Georgia, and Discovery Islands will allow us to determine if fish remain the Salish Sea over winter. In addition to the acoustic tag, fish were implanted with a PIT tag which can ultimately be used to estimate smolt to adult survival back to the Cowichan River. Finally, we collected gill and scale samples for genetic stock dentification and to investigate infectious agents that might be present in tagged fish.i
| Title | Mortality, Movements, and Migration Timing of Age-0 Cowichan Chinook Salmon Tagged in the Southern Gulf Islands in Fall 2017 |
|---|---|
| Identifier | OTN Canada |
| Funding | OTN is a research and technology development initiative headquartered at Dalhousie University, in Halifax Nova Scotia. OTN is funded by the Canada Foundation for Innovation (CFI) and is grateful to have once received funding from the Natural Sciences and Engineering Research Council of Canada (NSERC) and the Social Sciences and Engineering Research Council of Canada (SSHRC). OTN is also grateful for the continued support from Research Nova Scotia, and OTN's host institution, Dalhousie University. |
| Study Area Description | No study area description for this project was provided to OTN for publication. |
| Design Description | A wide range of aquatic species are tagged with small electronic transmitters, surgically implanted or attached externally, which can operate for up to 20 years. Acoustic receivers arranged in line on the ocean floor as well as attached to buoys, gliders and large animals (e.g. grey seals) pick up the coded acoustic signals from these tags identifying each tagged sea creature that passes within half a kilometer of the receiver. Data collected by these listening stations are subsequently uploaded to one of many compatible data nodes, adding to the reach of an intercompatible network of networks designed and maintained by the Ocean Tracking Network, producing current and reliable records for every part of the globe. Certain classes of electronic tags and listening equipment (receivers) may also be outfitted or co-located with sensors to measure the ocean's temperature, depth, salinity, currents, chemistry, and other properties. |
The personnel involved in the project:
Sampling Methods
Acoustic tags released.
| Study Extent | Program started 2017-01-01 and ran until 2018-12-31 |
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| Quality Control | OTN species names are verified using the World Register of Marine Species (WoRMS). If species names on new data cannot be verified against (a) known valid names in OTN, and/or (b) WoRMs the Data Provider will be notified so they can check they are correct. Names that cannot be placed after checking with WoRMS are, where possible, placed on the basis of other authoritative sources, such as the Fishbase or ITIS; and once completely verified a request will be sent to WoRMS for addition of the verified species name. http://members.oceantrack.org/data/discovery/byspecies |
Method step description:
- This resource was created by the Ocean Tracking Network Data Centre as a summarized representation of animal presence determined by electronic tagging efforts. Darwin Core (DwC) records were extracted from the OTN database and filtered and summarized according to international agreed-upon standards.
Bibliographic Citations
- Welch, D., Rechisky, E., Duguid, W., Porter, A., Winchell, P., Pellet, K., Juanes, F., Miller-Saunders, K., Neville, C. 2018. Mortality, Movements, and Migration Timing of Age-0 Cowichan Chinook Salmon Tagged in the Southern Gulf Islands in Fall 2017. In: Ocean Tracking Network Data Centre, Halifax Canada / otndc@dal.ca Retrieved: 2018-02-14 from db.load.oceantrack.org
Additional Metadata
Access Constraints: none Use Constraints: Acknowledge the use of specific records from contributing databases in the form appearing in the 'Citation' field thereof (if any); and acknowledge the use of the OBIS facility. For information purposes, email to info@obis.org the full citation of any publication made (printed or electronic) that cites OBIS or any constituent part. Recognize the limitations of data in OBIS. See https://manual.obis.org/policy.html#disclaimer for more details
| Purpose | These data are for display on the OBIS portal and associated mapping programs and for download to personal computers for ad-hoc end-user analysis. |
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| Alternative Identifiers | 10.14286/taxwpz |
| https://members.oceantrack.org/ipt/resource?r=otnkrsmortality_movements |