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Workshop Report: Introduction and Overview of the ROAM (RAFOS Ocean Acoustic Monitoring) Approach to Marine Tracking
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2019
[PDF-14.15 MB]
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Description:Poor marine survival is a primary factor limiting Atlantic salmon (Salmo salar) productivity across much of the species North Atlantic range. Increasing our understanding of survival in the marine environment has been identified as a priority action in numerous international and domestic forums. Historically, knowledge about marine distribution of many fish species has come from mark-recapture studies or genetic sampling associated with fisheries and/or surveys. Recently, telemetry methods (i.e., ultrasonic acoustic monitoring and archive telemetry) have been used to study individual fish movements in the ocean. These 2 methods offer both benefits and disadvantages, but neither is wholly suitable for tracking a relatively small marine species, which undergo extensive marine migration into Arctic water over an extensive time period. RAFOS is a common oceanographic monitoring tool used to track ocean currents and relies on moored acoustic transmitting units that emit an acoustic signal that can be detected by a hydrophone on a RAFOS float. The RAFOS technology has recently been modified and miniaturized through the development of a new single board receiver and may be suitable for tracking relatively small marine species across large areas of the ocean. A workshop was held on June 7-8, 2018 in Woods Hole, MA, USA to facilitate a detailed technical discussion on the RAFOS Ocean Acoustic Monitoring (ROAM) approach to tracking. Participants from both North America and European attended as did representatives from the Pacific salmon (Oncorhynchus spp) community from the west coast of North America. Workshop objectives were to: (1) provide an in-depth overview of the ROAM approach to marine tracking; (2) provide an overview of field testing to date; (3) discuss pros and cons of the ROAM approach compared to contemporary methods; (4) discuss limitations and solutions of ROAM approach; (5) discuss West Greenland ROAM satellite tracking project; (6) discuss other potential projects tracking juveniles, subadult, or adult stage Atlantic salmon; and (7) discuss the potential for a North Atlantic-wide monitoring project and applicability to the International Year of the Salmon (IYS). This report provides and overview of the workshop, discussions, and conclusions.
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Rights Information:Public Domain
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