@article{klein_importance_2007,  title = {Importance of pollinators in changing landscapes for world crops},  volume = {274},  url = {https://royalsocietypublishing.org/doi/abs/10.1098/rspb.2006.3721},  doi = {10.1098/rspb.2006.3721},  abstract = {The extent of our reliance on animal pollination for world crop production for human food has not previously been evaluated and the previous estimates for countries or continents have seldom used primary data. In this review, we expand the previous estimates using novel primary data from 200 countries and found that fruit, vegetable or seed production from 87 of the leading global food crops is dependent upon animal pollination, while 28 crops do not rely upon animal pollination. However, global production volumes give a contrasting perspective, since 60\% of global production comes from crops that do not depend on animal pollination, 35\% from crops that depend on pollinators, and 5\% are unevaluated. Using all crops traded on the world market and setting aside cro