This PDF file includes:

• Supplementary Text
  
• fig. S1. BE UV-B fluxes versus distance from UV-B lamps in growth chamber experiments.
  
• fig. S2. Pollen cone subsampling strategy.
  
• fig. S3. Sample size and accuracy of malformed pollen frequency determination.
  
• table S1. Results of a two–mixed-factor nested ANOVA of malformed pollen frequencies.
  
• table S2. Summary of a pairwise, two–mixed-factor nested ANOVA of malformed pollen frequencies.
  
• table S3. Pollen malformation frequencies, percentages, and index per tree.
  
• table S4. Ovulate cone survivorship across treatments.
  
• table S5. Temperature settings during growth chamber experiment.
  
• table S6. Photoperiod settings during growth chamber experiment.
  
• References (78–80)

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