Table 1.

Distribution of crops among categories of pollinator dependency

Pollinator dependence*	Developed world, all crops		Developing world, all crops†		Exclusively in developing world
	No. of crops	Percentage crops	No. of crops	Percentage crops	No. of crops	Percentage crops
0 (none)	33	43·4	35	40·2	2	18·2
1 (little)	11	14·5	14	16·1	3	27·3
2 (modest)	14	18·4	15	17·2	1	9·1
3 (high)	13	17·1	16	18·4	3	27·3
4 (essential)	5	6·6	7	8·1	2	18·2

* Class 0 (none) = production independent of animal pollination; 1 (little) = production reduction >0 but <10 % without pollinators; 2 (modest) = 10–40 % reduction; 3 (high) = 40–90 % reduction; and 4 (essential) = reduction >90 %.

^†Includes all the crops sampled in this study.