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Vemco VR2 data
Eonfusion is used in this example as a tool for monitoring the spatial and temporal extent of movement and interchange between deep and shallow water stocks of two commercially important reef fish species.
Researchers deployed a series of Vemco VR2 receivers to follow the movement of more than 60 fish tagged with acoustic transmitters over a period of 2 years. With each transmitter sending out up to 20 transmissions every hour the quantity of data collected over the duration of the study accumulated rapidly.
Using Eonfusion, the raw detection data was sorted into user-defined time bins and cumulative frequencies calculated. The use of 4D halos around receiver locations allows the quantity of detections at each location to be visualized and the spatial distribution of tagged fish to be easily identified.
Eonfusion has enabled the researchers to view the movement and distribution of tagged fish through time and also their patterns of habitat utilization via the incorporation of bathymetry and habitat information.
Myriax acknowledges Dr. Jayson Semmens and Edward Forbes of the Tasmanian Aquaculture and Fisheries Institute (TAFI), University of Tasmania.
