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

Latest version published by Ocean Tracking Network on Feb 20, 2019 Ocean Tracking Network

This is the OBIS extraction of the OTN Mortality, Movements, and Migration Timing of Age-0 Cowichan Chinook Salmon Tagged in the Southern Gulf Islands in Fall 2017 project, consisting only of the release tagging metadata. i.e. the locations and dates of tagged animal release. If readers are interested in the full source dataset they should refer to the OTN web site (members.oceantrack.org). 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 occurrence 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 80 records.

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.

Downloads

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 80 records in English (9 KB) - Update frequency: irregular
Metadata as an EML file download in English (16 KB)
Metadata as an RTF file download in English (14 KB)

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. Version # In OBIS Digital Collections. Published by OBIS, Digital http://www.obis.org/. Accessed on - INSERT DATE

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is Ocean Tracking Network. This [DATA(BASE)-NAME] is made available under the Open Data Commons Attribution License: http://www.opendatacommons.org/licenses/by/1.0/.

GBIF Registration

This resource has not been registered with GBIF

Keywords

Occurrence; Observation

Contacts

Who created the resource:

OTN Portal Manager
OTN Portal Manager
Ocean Tracking Network 1355 Oxford St B3H 3Z1 Halifax Nova Scotia CA +1 (902) 494-4101
http://members.oceantrack.org

Who can answer questions about the resource:

OTN Portal Manager
OTN Portal Manager
Ocean Tracking Network 1355 Oxford St B3H 3Z1 Halifax Nova Scotia CA +1 (902) 494-4101
http://members.oceantrack.org

Who filled in the metadata:

OTN Portal Manager
OTN Portal Manager
Ocean Tracking Network 1355 Oxford St B3H 3Z1 Halifax Nova Scotia CA +1 (902) 494-4101
http://members.oceantrack.org

Who else was associated with the resource:

Aswea Porter
Kintama Research Services
http://kintama.com
Principal Investigator
David Welch
Kintama Research Services
http://kintama.com
Erin Rechisky
Kintama Research Services
http://kintama.com
Francis Juanes
University of Victoria
http://www.uvic.ca
Kevin Pellett
Fisheries and Oceans Canada
http://www.dfo-mpo.gc.ca
Kristi Miller-Saunders
Paul Winchell
Kintama Research Services
http://kintama.com
Will Duguid

Geographic Coverage

Cowichan River

Bounding Coordinates South West [48.7, -123.63], North East [48.92, -123.47]

Taxonomic Coverage

All tagged specimens were identified to species. Each Chinook salmon was weighed, was measured, had life stage recorded. Average measurements for Chinook salmon: Average weight:0.063 kg Average length (FORK):0.175 m Life stage:JUVENILE

Species  Oncorhynchus tshawytscha (Chinook salmon)

Temporal Coverage

Start Date / End Date 2017-09-12 / 2017-09-15

Project Data

No Description available

Title Ocean Tracking Network (OTN)
Funding OTN is a $168-million research and technology development initiative headquartered at Dalhousie University, in Halifax Nova Scotia. Starting in 2008, OTN began deploying Canadian state of the art acoustic receivers and oceanographic monitoring equipment in key ocean locations. These are being used to document the movements and survival of marine animals carrying acoustic tags and to document how both are influenced by oceanographic conditions. OTN is funded by the 'Canada Foundation for Innovation' and the 'Natural Sciences and Engineering Research Council of Canada' with additional support from 'Dalhousie University' and the 'Social Sciences and Engineering Research Council of Canada'.
Study Area Description OTN is a project of the Global Ocean Observing System (GOOS) providing infrastructure to collect comprehensive data on sea animals in relation to the ocean's changing physical properties at strategic locations along the sea floor in 14 ocean regions off all seven continents. OTN data are in the process of being routinely copied to International Oceanographic Data Exchange (IODE) recognized facilities at the Department of Fisheries and Ocean Canada for long term sustainability and to the Ocean Biogeographic Information System (www.obis.org) for public accessibility.
Design Description A wide range of aquatic species - salmon, tuna, whales, sharks, penguins, crabs, and seals, to name a few, are tagged with small electronic transmitters, surgically implanted or attached externally, and 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 are subsequently uploaded to a central database, resulting in current and reliable global records that can be analyzed and applied to many different environmental research efforts. Tags and receivers are also be outfitted with sensors to measure the ocean's temperature, depth, salinity, currents, chemistry, and other properties.

The personnel involved in the project:

Principal Investigator
Sara Iverson

Sampling Methods

Acoustic receivers were deployed and acoustic tags were released.

Study Extent Tagging program started in 2017 and is ongoing.
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:

  1. This resource was created by OTN data management for publication at OBIS. Darwin Core (DwC) records were extracted from the core OTN database in the required IPT format.

Bibliographic Citations

  1. 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: 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.

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. marine, harvested by OBIS

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.
Alternative Identifiers https://oceantrack.org/ipt/resource?r=otnkrsmortalitymovements