Figure 1 in Absence of visual cues motivates desert ants to build their own landmarks

Figure 1. Accuracy of long homing runs and survey of nests in a salt pan (A) GPS tracks of long foraging runs (Geo Tracker, Google Earth) (see also Figure S1). Each black dot represents a different nest. Black lines, successful homing runs; red lines, unsuccessful homing runs that resulted in the ant's death. The track that leads to colony E is displaced to fit closer to the other paths for visualization purposes. (B) Photographs of a typical salt pan nest (left) and a typical shore nest (right, photo credit: Cornelia Buehlmann). (C) Map of the salt pan with dominant environmental features (i.e., vegetation and terrain elevations) and classifications of two nest types. Nests located at least 60 m away from any shoreline are classified as salt pan nests (blue) and nests less than 40 m away from any shoreline are classified as shore nests (green). Nests situated between 40 and 60 m from any shoreline are not included in the analysis. (D) Height of nest hills at salt pan nests and shore nests (unpaired t test, n = 33; ****p <0.0001; bars indicate median and SD). See also Table S1.