Fisheries and Oceans Canada (DFO) have used acoustic telemetry data and anecdotal information to identify discrete areas within the lower Miramichi River that are being used by aggregations of over-wintering Striped Bass (Morone saxatilis). The discrete river reaches of the Northwest branch have been identified as important winter habitat where fish are expected to remain in large numbers until ice-out. Striped Bass numbers within the river have been increasing significantly over recent years and management of the stock by DFO requires reliable estimates of population size. Milne Technologies provided on-site support for testing the feasibility of developing an acoustic approach to assessing the aggregation size and relative abundance of over-wintering Striped Bass within the Miramichi River.
Services provided for: Fisheries and Oceans Canada, Diadromous Fish Section
Field technology utilized for this project:
- Kongsberg Simrad 120 kHz EK60 split-beam echosounder.
- Kongsberg Simrad 120 kHz EK80 split-beam echosounder.
- Sound Metrics Corp., Adaptive Resolution Imaging System (ARIS) Model 1800
- SonTek Castaway CTD
Products delivered by Milne Technologies:
- Acoustic data collection and processing including ARIS imaging mosaics of key over-wintering habitat.
- Final report including feasibility study results and recommendations.