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OAS accession Detail for 0284470, meta_version: 8. Current meta_version is: 9
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| accessions_id: | 0284470 | archive |
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| Title: | Chum salmon catch per unit effort, CPUE, collected from small vessel Qualicum Producer in Strait of Juan de Fuca from 2017-09-25 to 2017-11-07 (NCEI Accession 0284470) |
| Abstract: | This dataset contains only cruise report on chum salmon survey in Strait of Juan de Fuca in autumn 2017. Through the initial work on the ChumGEM reconstruction model, it was very apparent that the diversion of Chum salmon stocks through the southern route (Strait of Juan de Fuca) was a significant gap in our information needed to populate the model. Currently the model structure is available to incorporate this information but the assumptions on the migration pathways being used require investigation and validation. The purpose of this project was to work towards addressing that data gap by sampling this migration route in both US and Canadian waters to determine: • The spatial and temporal stock composition of Chum salmon migrating through the Southern Diversion route, • Provide sampling platform for stock identification, migration rate studies etc. • Develop time series of Catch per Unit effort data to pair with the Johnstone Strait Test Fishery to determine diversion rate of various Chum populations. The first year of this multi-year program was initiated in 2016. The success of that season moved to continue the program in 2017 with a few modifications. The program began as planned on September 25th and ran until November 7th . A total of 131 sets were completed (68 in Canadian waters and 63 in US waters). A total of 9,577 Chum were encountered and 1,538 were sampled for stock id and other biologicals. There was a significantly higher Catch per Unit Effort (CPUE) in the Canadian side of the Strait compared to what was encountered in the US. This was the complete opposite as to what was encountered in 2016. The catch information demonstrated an earlier timing on the Canadian side of the Strait with a peak CPUE during week 42 and a later peak CPUE in the US waters during week 44. Over the period of the program, Chum CPUE was higher in Canadian waters than in US waters except in week 44. Stock composition information demonstrated that Canadian stocks dominated the samples throughout the program in Canadian waters and only during the first week in US waters. US stocks in Canadian waters varied in composition but increased later in the program. In US waters, US stocks dominated the mixtures throughout the program except during the first week. Stock timing and distribution differences were observed and this new information has improved our understanding of stock composition and timing through the Strait of Juan de Fuca. This cruise is U.S. State Department MSR U2017-005 as part of the World Data Service for Oceanography. Report is in PDF. |
| Date received: | 20220411 |
| Start date: | 20170925 |
| End date: | 20171107 |
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| West boundary: | -125 |
| East boundary: | -122 |
| North boundary: | 49 |
| South boundary: | 48 |
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| Submitter: | Van Will, Pieter |
| Submitting institution: | Department of Fisheries and Oceans Canada |
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| Metadata version: | 8 |
| Keydate: | 2023-10-25 14:28:16+00 |
| Editdate: | 2023-10-26 16:28:20+00 |