Data from: Sensitivity of commercial pumpkin yield to potential decline among different groups of pollinating bees

Sonja C. Pfister, Philipp W. Eckerter, Jens Schirmel, James E. Cresswell & Martin H. Entling
The yield of animal-pollinated crops is threatened by bee declines, but its precise sensitivity is poorly known. We therefore determined the yield dependence of Hokkaido pumpkin in Germany on insect pollination by quantifying: (i) the relationship between pollen receipt and fruit set and (ii) the cumulative pollen deposition of each pollinator group. We found that approximately 2500 pollen grains per flower were needed to maximize fruit set. At the measured rates of flower visitation, we...
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