Fremantle Port Inner Harbour and Channel ... - Fremantle Ports

CONTENTS1. Introduction................................................................................ 42. Methods .................................................................................... 42.1. Field logistics ..................................................................... 42.2. Sampling plan .................................................................... 42.3. Equipment ......................................................................... 42.3.1. Topside Control Unit ............................................................................. 42.3.2. Spatial positioning ............................................................................... 42.3.3. Video camera ........................................................................................ 52.3.4. Depth data ........................................................................................... 52.4. Video analysis .................................................................... 63. Results ..................................................................................... 9TABLESTable 1 The estimated error for the spatial positioning of the towed camerarelative to the GPS receiver (on the vessel) ......................................... 5Table 2 Tide predictions for the Port of Fremantle (www.transport.wa.gov.au) ........ 6Table 3 Data fields captured in the GO Video software analysis data ........................ 7FIGURESFigure 1 Substrate and biota habitat classification hierarchy levels .......................... 8Figure 2 Depth data collected during the field survey ............................................... 10Figure 3 Seagrass percent cover data ........................................................................ 11APPENDICESAppendix 1: Video analysis biological community classification scheme ................. 12Appendix 2: Video analysis substrate classification scheme .................................... 133 of 13