How exotic plants integrate into pollination networks (2014)
Type of ContentJournal Articles
PublisherUniversity of Canterbury. Biological Sciences
AuthorsStouffer, D.B., Cirtwill, A.R., Bascompte, J.show all
1. There is increasing world-wide concern about the impact of the introduction of exotic species on ecological communities. Since many exotic plants depend on native pollinators to successfully establish, it is of paramount importance that we understand precisely how exotic species integrate into existing plant–pollinator communities. 2. In this manuscript, we have studied a global data base of empirical pollination networks to determine whether community, network, species or interaction characteristics can help identify invaded communities. 3. We found that a limited number of community and network properties showed significant differences across the empirical data sets – namely networks with exotic plants present are characterized by greater total, plant and pollinator richness, as well as higher values of relative nestedness. 4. We also observed significant differences in terms of the pollinators that interact with the exotic plants. In particular, we found that specialist pollinators that are also weak contributors to community nestedness are far more likely to interact with exotic plants than would be expected by chance alone. 5. Synthesis. By virtue of their interactions, it appears that exotic plants may provide a key service to a community’s specialist pollinators as well as fill otherwise vacant ‘coevolutionary niches’.
CitationStouffer, D.B., Cirtwill, A.R., Bascompte, J. (2014) How exotic plants integrate into pollination networks. Journal of Ecology, 102(6), pp. 1442-1450.
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Keywordscoevolution; competition; extinction; generalists; indirect; facilitation; invasion ecology; mutualistic networks; nestedness; plant–animal interactions; specialization
ANZSRC Fields of Research06 - Biological Sciences::0602 - Ecology::060299 - Ecology not elsewhere classified
06 - Biological Sciences::0603 - Evolutionary Biology::060399 - Evolutionary Biology not elsewhere classified
06 - Biological Sciences::0607 - Plant Biology::060799 - Plant Biology not elsewhere classified