“…Pollen traps have been used widely as a method to record the pollen flora of an area (Severson and Parry, 1981;Biesmeijer et al, 1992;Telleria, 1993;Pearson and Braiden, 1990;Coffey and Breen, 1997;Andrada and Telleria, 2005;Dimou and Thrasyvoulou, 2007). However, the use of pollen traps is not always feasible for some bee species nor desirable, since it may influence the nectar foraging behaviour of the colony in a negative way (McLellan, 1974;Webster et al, 1985;Duff and Furgala, 1986;Fewell and Winston, 1992;Dreller et al, 1999).…”