Estimating Animal Abundance in Heterogeneous Environments: An Application to Aerial Surveys for Dugongs

By K. Pollock, H. Marsh, I. Lawler, M. Alldredge. 2006

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Design and field methods for sighting surveys of cetaceans in coastal and riverine habitats (2008, methodology): “Availability bias has been estimated in an aerial survey of dugongs using helicopter observations of dugong Dugong dugon models at various depths, and data from animals tagged with time-depth recorders (TDR) (Pollock et al., 2006).”
Whales from space: Four mysticete species described using new VHR satellite imagery (2018, background): “Another idea would be to install artificial whale models at various depths, similar to what Pollock et al. (2006) and Robbins et al. (2014) did with artificial dugong (Dugong dugon) and shark models to estimate the detectability of these animals from aircraft.”
Aerial survey as a tool to estimate whale shark abundance trends (2009, background): “Pollock et al. (2006) showed that the depth at which an animal can be identified and the proportion of time that they spend within the upper section of the water column, interact to determine their availability to aerial survey observers.”
The potential for unmanned aerial vehicles (UAVs) to conduct marine fauna surveys in place of manned aircraft (2018, methodology): “can then be calculated and applied to adjust the count data (Marsh and Sinclair, 1989; Pollock et al., 2006).”