Fig. 6
From: Combining acoustic tracking and LiDAR to study bat flight behaviour in three-dimensional space
Distance of bat activity relative to the vegetation. Top view of Pipistrellus spp. positions (coloured dots) integrated with the voxelised vegetation scan (black dots) within the horizontal plane between 3.5 and 4.5 m above the ground. The T-shape represents the array. The red arrow shows an example of a flight trajectory. Voxels have a size of 20 × 20 × 20 cm. Only voxels with at least ten vegetation points are marked as ‘vegetation voxels’ as this preserves a fine-scale resolution in vegetation while filtering out background voxels containing isolated vegetation points. The distance to the vegetation corresponds to the absolute distance (in meters) of each bat position to the closest vegetation voxel containing at least ten vegetation points. The black icon next to the microphone array shows the position of the lamppost (height of 4 m), which is part of the experimental setup of the “Light on Nature” sites. The highlighted sections indicate the narrow (light red) and the wide (light blue) corridors described in Fig. 7