This project will collect and analyse DNA information from chinook in the WCVI chinook AABM fishery. The information is required to address i) changes in the conduct and catch distribution of the WCVI chinook fishery, including a more distributed troll fishery and growth of the sport fishery relative to the base period; and ii) the impact of these changes on the reliability of the CTC chinook model to forecast abundance.
The identification of benchmarks to establish the status of Canadian Management Units (MU’s) has been identified as a key priority of the bilateral Coho Technical Committee. LGL proposes to continue the application of the Coho Habitat Production methodology developed by Bocking and Peacock (2004) to the Lower Fraser Coho MU to develop benchmarks of status for this MU and the component Canadian Wild Salmon Policy Conservation Units (CU’s).
S14-I01 Determining Optimum Coho Smolt Production and Spawner Abundance to Establish Benchmarks for Coho Salmon Conservation Units (CU) in the Lower Fraser Management Unit 2014. Year 2
S13-I05 Determining Optimum Coho Smolt Production and Spawner Abundance to Establish Benchmarks for Coho Salmon Conservation Units (CU) in the Strait of Georgia Mainland, and Vancouver Island Management Units 2013
The overall goal of the project aims at breaching the man-made causeway and building a bridge across the breach. The bridge is being built at a site where there used to be a trestle bridge supporting the railroad leading to the Westcan Terminal. The trestle bridge had been removed in the 1960’s and the gap closed by infilling. The in-filling and creation of a solid road connecting the Cowichan Bay Road with the Westcan dock effectively cut the estuary into two sections after the removal of the former trestle bridge. Furthermore, the dyke blocked off the flow of the main stem of the Cowichan River South Fork which used to drain into the southern section of the estuary when the trestle bridge was still in place, preventing proper estuarine ecosystem functioning and salmon smolt from accessing prime habitat located to the south of the Westcan Terminal.
S14-H04 Breaching the Westcan Causeway in Cowichan Bay to Re-connect the Two Parts of the Estuary Artificially Divided by the Westcan Causeway
Current methodology for estimating escapement and run size of Nass Area Chum salmon relies on a number of untested assumptions, resulting in considerable uncertainty regarding stock status. We propose a detailed review of recent and historical escapement data for Nass Area Chum salmon stocks, combined with strategically targeted escapement surveys, to refine and standardize the methodology used to calculate Nass Area Chum salmon escapement and run size.
The primary goals of the Chilko River Chinook Salmon Mark-Recapture Project are to develop and estimate the spawning abundance that meets or exceeds the Chinook Technical Committee data standard for escapement indicator stocks. Specifically to determine:
1) estimates of spawning escapement by age and sex that will, on average, attain a coefficient of variation (CV) of 15% or less on the spawner estimates; and
2) consistent estimates that are asymptotically unbiased.
Additional objectives include bias testing of application and recovery data, and improving the efficiency of the study in-season and annually.