Database from: Managed honey bees decrease pollination limitation in self-compatible but not in self-incompatible crops

Modern agriculture is becoming increasingly pollinator-dependent. However, the global stock of domesticated honey bees is growing at a slower rate than its demand while wild bees are declining worldwide. This uneven scenario of high pollinator demand and low pollinator availability can translate into increasing pollination limitation, reducing the yield of pollinator-dependent crops. However, overall assessments of crop pollination limitation and the factors determining its magnitude are missing. We assembled the first global database of pollination limitation in pollinator-dependent crops, encompassing 107 metadata comparing the quantity/quality of fruits/seeds produced by pollen supplemented vs naturally pollinated flowers. This database, based on 52 published studies, cover 30 crops in 52 crop systems. We conducted a meta-analysis comparing crop yield in pollen-supplemented vs. open-pollinated flowers. We assessed the overall magnitude of pollination limitation and whether this magnitude was influenced by (a) the presence/absence of managed honey bees, (b) crop compatibility system (i.e., self-compatible/self-incompatible), and (c) the interaction between these two factors.