Appendix A. A figure showing the number of ant workers foraging on Ferocactus wislizeni plants on occasions when those ants were observed.
FIG. A1. The number of ant workers foraging on Ferocactus wislizeni plants on occasions when those ants were observed. 259 plants were inspected biweekly in 2003 at the Desert Research Laboratory in Tucson, Arizona, USA. (A) Surveys from April–June, (B) surveys from July–September. |