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Invasive plants as novel food resources, the pollinators’ perspective

Ignasi Bartomeus, Jochen Fründ, Neal M. Williams
doi: https://doi.org/10.1101/018952
Ignasi Bartomeus
1Estación Biólogica de Doñana - Consejo Superior de Investigaciones Científicas (EBD-CSIC), Dept. Integrative Ecology. Sevilla, Spain. <>
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  • For correspondence: nacho.bartomeus@gmail.com
Jochen Fründ
2University of Guelph, Dept. Integrative Biology, Guelph, ON, Canada
3University of California, Dept. Entomology and Nematology, Davis, CA, USA
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Neal M. Williams
3University of California, Dept. Entomology and Nematology, Davis, CA, USA
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Abstract

Biological invasions are one of the main drivers of global change and have negatively impacted all biomes and trophic levels (Hobbs 2000, Vilà et al. 2011). While most introduced species fail to establish, or establish small naturalized populations (hereafter exotic species), a few become invasive and rapidly increase in abundance and/or range (hereafter invasives or invaders; Pysek et al. 2004). It is these invader species that are most often linked to negative impacts on native / endemic communities. Although most interactions between invasive and native species at the same trophic level result in negative direct impacts (e.g. plant-plant competitive interactions, Vilà et al. 2011), when the invasive plant species can be used as a resource those interactions can also be positive for consumers such as native herbivores, predators or mutualists, at least for some species (Heleno et al. 2009, Bezemer et al. 2004). Entomophilous exotic plant species, for example, not only compete directly for space and light with other plants, but also offer resource opportunities for the native pollinator community (Stouffer et al. 2014). Most research on this topic to date has taken the plant perspective, focusing on how successful plant invaders integrate into the native plant-pollinator interaction networks (Vilà et al. 2009), and how this integration in turn impacts the native plant community (Morales and Traveset 2009). However, species specific responses of pollinators to the addition of exotic plants are rarely taken into account. This represent an important gap in our knowledge as pollinator foraging choices determine the structure of interactions within communities, which in turn have important implications for the community stability (Thébault and Fontain 2010) and functioning (Thomson et al. 2012). How different pollinators respond to the changed composition of floral species within the community that results from exotic plant invaders deserves more attention.

Footnotes

  • This Chapter will appear in the book: Biological Invasions and Behavior. Edited by Daniel Sol and Judy Weis. Cambridge University Press. 2016.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC 4.0 International license.
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Posted May 05, 2015.
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Invasive plants as novel food resources, the pollinators’ perspective
Ignasi Bartomeus, Jochen Fründ, Neal M. Williams
bioRxiv 018952; doi: https://doi.org/10.1101/018952
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Invasive plants as novel food resources, the pollinators’ perspective
Ignasi Bartomeus, Jochen Fründ, Neal M. Williams
bioRxiv 018952; doi: https://doi.org/10.1101/018952

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