1. Dennis vanEngelsdorp University of Maryland Dennis.vanengelsdorp@gmail.com The Bee Informed Partnership: Data driven practices to improve bee health

3. Loss rates differ between Operation types

4. Results 2013-2014 Management Survey 5967 valid US respondents (465,599 colonies) Mean # col (Oct1st) 5709backyard bk. ( ≤ 50 col)5.9 161sideline bk. (50 col ≤ 500)145.8 97commercial bk. (>500 col)4211

5. Management Questions 8 domains / 81 practices

6. Results Correlation (Pearson): Winter Loss ~ Grand Score By Region N= 3928 N =1 930 N=109 Grand Score Winter Loss (%)

7. Beekeepers (50+) colonies

8. > 50 colonies operated in any climatic regions

9. Monthly Varroa Loads Month Mites per 100 bees

11. C ENC MS NE NW S SE SW W WNC

12. Results Correlation (Pearson): Winter Loss N=5709 N= 161 N = 97 Grand Score Beekeeper Equipment Queen & New Col. Seasonal Feeding Monitoring Varroa Control Non Varroa Control Winter Loss (%)

13. Remote Tech Teams

14. Tech Team monitoring Return on Investment Assume long term benefit is a 20% (6pt) reduction in loss (from 30% - 24%) $80 Invested/ year *50% beekeepers *50% partners An operation of 2,500 colonies Hives saved per year = 150 colonies Value = $200

16. Emergency Response Kits Queen survey Tech teams

17. Pesticide Detections Products Detected Number of bee bread samples N=632 21 % had no detectable contamination Mean 2.36 products Mean excluding no detects: 3

18. Frequency of Samples with varying HQ Hazard Quotient Score

19. Fenpyroximate miticide Prallethrin mosquito