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Archived – Sea Lice on the Move
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Map of the vertically-averaged tidal currents (cm/s) in the model domain of the Queen Charlotte Strait and Broughton region of British Columbia.
The circulation of waters in the Broughton region of BC has been the subject of a recently completed ACRDP project and a component of a new ACRDP project to investigate the life history of sea lice. Field programs and numerical circulation models have significantly increased the knowledge and understanding of the circulation of this complex region and identified key areas for further research. Scientists have used particle tracking software and numerical model currents to simulate the movement of pathogens, toxic algal blooms and planktonic larval stages of salmon louse from different source locations. These particle tracking simulations provide estimates of the transport pathways, distances traveled and concentration of particles in the model region.
In this project the researchers plan to conduct detailed measurements of near surface circulation at several farm sites and other areas of interest using GPS tracked surface drifters.
The drifter experiments will also be used to verify model representations of the mean surface circulation and to compare with our particle tracking simulations. Furthermore, the researchers plan to extend the program of current meter observations in order to have observations of current movements that are coincident with the drifter experiments.
Research team: Dario Stucchi, Mike Foreman and Clare Backman. For information contact Dario Stucchi (Email: StucchiD@pac.dfo-mpo.gc.ca). Submitted by DFO (ACRDP) and Marine Harvest Canada
