Fig. 2
From: Using synthetic semiochemicals to train canines to detect bark beetle–infested trees
Field GPS tracks and dog detection distances. a Tracks from an example of handler and search dog finding a small group of unknown mass-attacked trees. GPS unit track shown with Google Earth background satellite image over the area. Distance from Change of Direction to the attacked trees = 158 m (distance and tracks by BaseCamp™, ver. 4.7.0, Garmin Ltd). Maps, aerial photos/satellite images: Copyright/Lantmäteriet, Sweden, consent #: I2011/0096 (see dog search and GPS unit tracking in video ESM_4_V3 from Johansson et al. (2019)). b Detection distances (distance from Change of Direction to the attack) recorded from GPS tracks (as above) when locating natural bark beetle mass attacks unknown to handler