Polination; an Ecosystem Service Affected by Climate Change - PolliClim

The ecosystem service pollination is under threat due to declining populations of pollinators. In this project we will study how climate change might affect plant-pollinator interactions. We will have a broad focus, including entomophilous crops, managed pollinators (honeybees), wild pollinators and wild plants and address questions related to how these four constituents of the pollination system affect each other and how the system as a whole is affected by climate change.

About the project

In particular we will sample plant pollinator interactions within entomophilous crop fields and in surrounding wild plant communities. From the sampled data we will identify important crop pollinators and their temperature sensitivity. We will also be able to address questions on how honeybees affect the wild pollinator community and how wild plant communities affect the pollination of entomophilous crops. We will use study sites around Oslo and on the west coast of Norway (Sogn) and in three other biogeographic regions (The Mediterranean (Greece), Southern Australia (Victoria) and the Argentinean Pampas). This will give us data that are directly comparable and included in common analyses, enabling us to test hypothesis on the generality of our findings. The project is following recommendations for focal areas of future research outlined in two recent publications co-authored by the A. Nielsen (Kjøhl et al. 2011, Hegland et al. 2010).

The project will increase our understanding of pollination in general and potential changes under a climate change scenario in particular. Crop pollination has rarely been studied in Norway and the project will therefore be among the first to have look at what is going on out there. The results from the project will be of high value to Norwegian fruit producers in particular, but also to farmers of entomophilous crops world-wide.


PolliClim is fully financed by The Research Council of Norway through the Miljøforsk program (project no. 230279 / E50)



Nielsen, A., T. Reitan, A. W. Rinvoll, and A. K. Brysting. 2017. Effects of competition and climate on a crop pollinator community. Agriculture, Ecosystems & Environment 246:253-260.

Reitan, T. & Nielsen, A. 2016 Do Not Divide Count Data with Count Data; A Story from Pollination Ecology with Implications Beyond. PLoS ONE, 11, e0149129.

Fagerli, LL. (2018). Spatial and temporal dynamics of plant-pollinator interactions in northern Norway. Master thesis UiO.

Haug, S. (2017). Flower Visitation and Seed Set in Melampyrum; Effects of Elevation and Rubus Idaeus. Master thesis UiO.

Karbassioon, A. (2017). Pollinator Activity along an Environmental Gradient. Master thesis UiO.

Asmervik, IF. (2017). Assessing the Flower Visitation to Soybean (Glycine Max) and Different Sampling Methods in an Intensive Agricultural System of the Argentinian Pampas. Master thesis UiO.

Rinvoll. A. (2016). Pollinator Activity under Climate Change. Master thesis UiO. Master thesis UiO.

Nitter, E. (2015). Effects of Sheep Grazing on Bumblebee Flower Visitation Rate in an Alpine Ecosystem. Master thesis UiO.


View all works in Cristin

  • Tscheulin, Thomas; Tatas, Ch; Reitan, Trond & Nielsen, Anders (2018). Spatiotemporal variation in the visitation of melon flowers by bees.
  • Nielsen, Anders (2017). Pollinering i Bringebær.
  • Nielsen, Anders; Reitan, Trond & Tscheulin, Thomas (2017). Understanding the Unexplainable Nature of an Ecosystem Service.
  • Nielsen, Anders (2017). Pollinering - Når naturen gjør oss en tjeneste.
  • Nielsen, Anders (2017). Pollinering - Der jordbruk møter biologisk mangfold.
  • Nielsen, Anders (2017). Pollinering i landbruket.

View all works in Cristin

Published Aug. 13, 2018 4:37 PM - Last modified Aug. 13, 2018 4:38 PM