Percorrer por autor "Cushenan, Catherine Claire"
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- Validating the use of baited remote underwater video (BRUV) and unmanned aerial vehicles (UAVs) in assessing the abundance of pelagic sharks in shallow tropical waters in Cocos (Keeling) IslandPublication . Cushenan, Catherine Claire; Erzini, Karim; Harvey, EuanThis study investigates the reliability and accuracy of elasmobranch abundance data collected using baited remote underwater video (BRUV) surveys and unmanned aerial vehicle (UAV) surveys, and shark interaction with equipment in the Cocos (Keeling) Islands, a remote territory of Australia. The primary aim of the study was to provide insight into strengths and drawbacks of both BRUV and UAV techniques in the study of large pelagic elasmobranchs in shallow tropical ecosystems and to clarify elasmobranch interaction with underwater apparatus. Aerial and underwater surveys were conducted simultaneously, with the underwater component rotating between use of bait, BRUV and no stimuli between each survey, while a Phantom 4 DJI drone hovered directly above study site. The difference between BRUV and bait-only surveys was not significant overall. The drone, the BRUV and the bait recorded similar enough data that our analysis could not detect a noticeable difference and both were deemed capable tools in shallow water shark research.