climate influence on plant-pollinator interactions in the ... · background •climate change is...
TRANSCRIPT
![Page 1: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/1.jpg)
Climate influence on plant-pollinator interactions in the keystone species Vaccinium myrtillus
Siri Lie Olsen, Marianne Evju, Jens Åström, Jonas L. Andresen, Jørn Olav Løkken, Sondre Dahle, Nina E. Eide
![Page 2: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/2.jpg)
www.nina.no
Background
• Climate change is expected to alter all major types of biotic interactions, including plant-pollinator interactions
• Climate-driven changes have been found in alpine plant and insect communities, but theeffect on the plant-pollinator interaction is unclear
• How important are the pollinators for seed-production in alpine plants, and does this varywith climate?
![Page 3: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/3.jpg)
www.nina.no
Target species
• Bilberry (Vaccinium myrtillus) Keystone species Widely distributed along climatic gradients Partly self-pollinated
• Bumble bees Main pollinators of bilberry
![Page 4: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/4.jpg)
www.nina.no
Study area
![Page 5: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/5.jpg)
www.nina.no
Study area
Forest
Treeline
Alpine
Tree
line
eco
ton
e
![Page 6: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/6.jpg)
www.nina.no
![Page 7: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/7.jpg)
www.nina.no
Bumble bees
• Foraging activity of bumble bees over thecourse of the bilberryflowering season Flower visits on all plant species
DNA metabarcoding analysis of corbicularpollen loads
Andresen 2019
![Page 8: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/8.jpg)
www.nina.no
Bumble bees
Andresen 2019
![Page 9: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/9.jpg)
www.nina.no
Pollinator exclusion experiment
Pollinator reductionPollinator exclusion
![Page 10: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/10.jpg)
www.nina.no
![Page 11: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/11.jpg)
www.nina.no
Results
![Page 12: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/12.jpg)
www.nina.no
Results
![Page 13: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/13.jpg)
www.nina.no
Results
![Page 14: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/14.jpg)
www.nina.no
Conclusions
• Excluding (but not reducing) pollinatorabundance reduces fruit set and fruit mass in bilberry
• The importance of pollinators seems to increase towards colder climates
![Page 15: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/15.jpg)
www.nina.no
Remaining questions…
• Does this mean that bilberry fruit set will be less dependent on pollinators in a warmerclimate?
• How will this influence the climate-driven upslope movement of bilberry?
![Page 16: Climate influence on plant-pollinator interactions in the ... · Background •Climate change is expected to alter all major types of biotic interactions, including plant-pollinator](https://reader033.vdocument.in/reader033/viewer/2022060711/60780bfc08d96a3cc566e9c2/html5/thumbnails/16.jpg)
www.nina.no
Cooperation and expertise
for a sustainable future