Between‐year changes in community composition shape species’ roles in an Arctic plant–pollinator network |
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Authors: | Alyssa R Cirtwill Tomas Roslin Claus Rasmussen Jens Mogens Olesen Daniel B Stouffer |
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Institution: | 1. http://orcid.org/0000‐0002‐1772‐3868;2. Centre for Integrative Ecology, School of Biological Sciences, Univ. of Canterbury, Christchurch, New Zealand;3. Dept of Physics, Chemistry and Biology (IFM), Link?ping Univ., Link?ping, Sweden;4. Dept of Ecology, Swedish Univ. of Agricultural Sciences, Uppsala, Sweden;5. Dept of Agricultural Sciences, University of Helsinki, Helsinki, Finland;6. Dept of Bioscience, Aarhus Univ., Aarhus, Denmark |
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Abstract: | Inter‐annual turnover in community composition can affect the richness and functioning of ecological communities. If incoming and outgoing species do not interact with the same partners, ecological functions such as pollination may be disrupted. Here, we explore the extent to which turnover affects species’ roles – as defined based on their participation in different motifs positions – in a series of temporally replicated plant–pollinator networks from high‐Arctic Zackenberg, Greenland. We observed substantial turnover in the plant and pollinator assemblages, combined with significant variation in species’ roles between networks. Variation in the roles of plants and pollinators tended to increase with the amount of community turnover, although a negative interaction between turnover in the plant and pollinator assemblages complicated this trend for the roles of pollinators. This suggests that increasing turnover in the future will result in changes to the roles of plants and likely those of pollinators. These changing roles may in turn affect the functioning or stability of this pollination network. |
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Keywords: | pollination network structure inter-annual variation intra-annual variation turnover |
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