the reef biota at Wilsons promontory marine national - Parks Victoria

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Parks Victoria Technical Series #74SRMP Wilsons Promontory MNP2.2.7. Method 5 – Fish Stereo VideoA diver operated stereo video system (DOVS; SeaGIS design) was used to supplement thediver UVC fish surveys. The videos were Canon HG21 handycams recording to SD card in1080p format. The cameras were calibrated in a pool before and after the excursion using aSeaGIS calibration cube and SeaGIS CAL software for calibration of internal and externalcamera parameters. The cameras were mounted permanently to a diver frame. A flashingLED mounted on a pole in front of both frames was used for synchronisation of pairedimages from each camera.The stereo camera system was operated by the diver who did the UVC fish survey at thesame time (Method 1). The stereo camera frame had the underwater UVC slate mounted onit for the simultaneous observations. The camera system was pointed parallel with thetransect line with the diver swimming 2.5 m to one side of the transect and then returning onthe other side of the transect, 2.5 m from the transect line. The camera unit was tiltedvertically (up or down) according to the fish seen to ensure adequate footage for sizemeasurements. Lateral movement of the unit was minimised. The survey speed was 10 mper minute (0.16 m s -1 ).In the laboratory, the stereo video footage was converted from MTS to AVI format. TheSeaGIS EventMeasure and PhotoMeasure software were then used for extracting andrecording fish density and fish length estimates from the stereo video footage. Measured fishwere those without body flexure and orientated transverse to the camera, as well as with themeasurement points visible. Standard lengths (SL) were measured (tip of snout to end ofcaudal fin ray). The original video footage and frames used for fish length measurementswere archived. The results of this method were archived for future analysis and were notreported here.21
Parks Victoria Technical Series #74SRMP Wilsons Promontory MNPTable 2.3. Mobile fish (Method 1) taxa censused in central Victoria.Method 1 Method 1 Method 1 Method 1Cephalopoda Mobile Fishes (cont.) Mobile Fishes (cont.) Mobile Fishes (cont.)Sepia apamaTrachinopscaudimaculatusAplodactylus arctidensSiphonognathusbeddomeiSepioteuthis australis Vincentia conspersa Cheilodactylus nigripes Neoodax balteatusMobile Sharks and RaysDinolestes lewiniCheilodactylusspectabilisHaletta semifasciataHeterodontusportusjacksoniCephaloscyllium laticepsTrachurus declivisPseudocaranxgeorgianusNemadactylusmacropterusNemadactylus douglasiCristiceps aurantiacusThyristes atunMyliobatis australis Pseudocaranx wrightii Dactylophora nigricans Acanthaluteres vittigerUrolophus paucimaculatus Arripis georgiana Latridopsis forsteriBrachaluteresjacksonianusMobile Bony Fishes Upeneichthys vlaminghii Ophthalmolepis lineolata Scobinichthys granulatusEngraulis australis Pempheris multiradiata Dotalabrus aurantiacus Meuschenia australisAulopus purpurissatus Girella tricuspidata Eupetrichthys angustipes Meuschenia flavolineataSynodus variegatus Girella elevata Notolabrus tetricus Meuschenia freycinetiLotella rhacina Girella zebra Notolabrus fucicola Meuschenia galiiPseudophycis bachus Kyphosus sydneyanus Pseudolabrus rubicundus Meuschenia hippocrepisPseudophycis barbata Scorpis aequipinnis Pictilabrus laticlavius Meuschenia scaberGenypterus tigerinus Scorpis lineolata Odax acroptilus Eubalichthys gunniiPhyllopteryx taeniolatus Atypichthys strigatus Odax cyanomelas Aracana auritaHelicolenus percoides Tilodon sexfasciatus Siphonognathus caninus Aracana ornataAetapcus maculatusEnoplosus armatusSiphonognathusattenuatusTetractenos glaberPlatycephalus bassensisPentaceropsisrecurvirostrisSiphonognathus radiatusDiodon nichthemerusCaesioperca lepidopteraParma victoriaeSiphonognathustanyourusArctocephalus pusillusCaesioperca rasorParma microlepisSphyraenanovaehollandiaeChromis hypsilepis22
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the reef biota at Wilsons promontory marine national - Parks Victoria

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