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Drones, Volume 6, Issue 4

2022 April - 19 articles

Cover Story: Drone surveys detect more dolphins than boat-based surveys, thereby providing much improved population estimates. They also provide a more accurate account of the time dolphins spend in different activities because most of their underwater behavior cannot be detected from boats. These findings come from simultaneous boat-based and drone-based surveys in Hauraki Gulf, Aotearoa. The inaccurate group size counts and behavior budgets found using boat-based surveys are due to most cetacean activity occurring underwater where it is either entirely missed or distorted by low-angle view lines. Drones provide a new tool for marine mammal research, providing a safe method to acquire high-resolution data at a lower cost and with less intrusion on the animals. They provide improved datasets that can advance our knowledge of marine mammals. View this paper
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Drones - ISSN 2504-446X