Determining feasibility of acoustic tag attachment and documenting ...

Table of contentsAcknowledgments........................................................................................................IIIExecutive summary......................................................................................................IVList of Figures...............................................................................................................VList of Tables ...............................................................................................................VIIntroduction....................................................................................................................1Methods..........................................................................................................................3Study site....................................................................................................................3Acoustic tracking and depth recording equipment ....................................................4Tagging protocol........................................................................................................6Tracking protocol.......................................................................................................7Analysis and presentation of tracking data ................................................................7Activity budget...........................................................................................................8Depth data ..................................................................................................................8Results............................................................................................................................9Depth..........................................................................................................................9Activity budget.........................................................................................................10Observations ............................................................................................................11Discussion....................................................................................................................14Movement ................................................................................................................14Depth........................................................................................................................15Management issues ..................................................................................................15Future research.........................................................................................................16References....................................................................................................................18List of FiguresFigure 1. Sawfish acoustic tracking site location map for the Mapoon region northwestern Cape York Peninsula, Queensland. The water layer is presented as anaerial photograph with the darker patches indicative of deeper water...................4Figure 2: Position and size of acoustic tag and floats. A = LTD_10, B = acoustic tag,and C = galvanic time release. Horizontal line and arrows indicate where waterdepth was measured. ..............................................................................................6V