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Bartomeus SCAPE-2012

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Bartomeus SCAPE-2012

  1. 1. When is pollination the limitingecosystem service for crops? Ignasi Bartomeus nacho.bartomeus@gmail.com #SCAPE2012 @ibartomeus
  2. 2. (Tilman et al. 2011)
  3. 3. Bommarco et al. 2012
  4. 4. Bommarco et al. 2012
  5. 5. Bommarco et al. 2012
  6. 6. Landscape Pollinators Yield
  7. 7. Landscape Pollinators Yieldz-scores of Visitation (Garibaldi 2011)
  8. 8. z-scores of Visitation Landscape z-scores of fruit set Pollinators Yield(Garibaldi 2011)
  9. 9. Landscape Pollinators Yieldz-scores of Visitation z-scores of fruit set -Effect size -Proper control (Rickets 2008) (Garibaldi 2011)
  10. 10. 4 of the main crops in EU *Field Bean *Oils seed rape *Strawberry Field *Buckwheat Wind pollinated Transects Open pollinated
  11. 11. Same varietySame methodsSame geographical variationRealistic yield measure (weight)
  12. 12. Honeybees Bumblebees Wild bees Hoverflies 2% 6% 11% 35% 6% 57% 83% Field Bean Oils seed rape 2% 1% 7% 11%6% 2% 81% 90% Strawberry Buckwheat
  13. 13. *Field Bean *Oils seed rape *Strawberry *BuckwheatAlso Honeybees!
  14. 14. Mean % gain with pollinators BuckWheat Field Bean StrawberryOil Seed Rape 0 20 40 60 80
  15. 15. Landscape Pollinators Yield
  16. 16. Landscape Pollinators Yield effect ? shape of the limitation?
  17. 17. GLMM with block nested in field as random factors Field Bean Oil Seed rape Strawberry BuckwheatTreatment *** *** *** ***T*land use ns ns ns nsT*richness ns ns ns *** T*Visits ns ns ns *** also for Bumble bee visits only
  18. 18. 100%Yield 0% Visits
  19. 19. Field Bean Oils seed rape
  20. 20. Strawberry Buckwheat
  21. 21. 100%Yield *Soil quality (water, nutrients, AFM) 0% *Stress (Herbivory) Visits
  22. 22. 100% No stressYield Stress 0% Pollinator Visits
  23. 23. Thanks to Riccardo Bommarco, Simon Potts, IngolfSteffan-Dewenter & Michal WoyciechowskiFunding: SAPES Thank you! - nacho.bartomeus@gmail.com @ibartomeus
  24. 24. 80 Wind pollinated Open pollinatedFruit weight 40 0 Field Bean

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