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Floral visitation to alien plants is non‐linearly related to their phylogenetic and floral similarity to native plants

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2022

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Rakoto Joseph, Felana
Rajaonarivelo Andrianina, Princy

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Functional Ecology. Wiley. 2022, 36(10), pp. 2508-2519. ISSN 0269-8463. eISSN 1365-2435. Available under: doi: 10.1111/1365-2435.14156

Zusammenfassung

  1. Biological invasions are key to understanding ecological processes that determine the formation of novel interactions. Alien species can negatively impact floral visitation to native species, but native species may also facilitate early establishment of closely related alien species by providing a preadapted pollinator community. We tested whether floral visitation to alien species depended on phylogenetic relatedness and floral similarity to native species.
    2. In a field experiment, we simulated the early stages of an invasion by adding potted alien plants into co-flowering native communities. We paired each alien plant with a host native plant, and recorded floral visitation to them for 3,068 hr (totalling 84,814 visits). We used 34 alien and 20 native species in 151 species combinations. We tested whether the number of floral visits to alien plants, the proportion of visits to alien plant relative to visits to both alien and native plants, and the similarity in flower visitor compositions of alien and native plants depended on phylogenetic and floral trait distances between alien and native species.
    3. Floral visitation to alien species was highest when they had intermediate floral trait distances to native species, and either low or high phylogenetic distances. Alien species received more similar flower-visitor groups to natives when they had low phylogenetic and either low or high floral trait distances to native species.
    4. Co-flowering native species may facilitate floral visitation to closely related alien species, and distantly related alien plants seem to avoid competition for flower visitors with native plants. Alien species with similar floral traits to natives compete with them for flower visitors, and alien species with dissimilar floral traits may not share flower visitors with native species. Alien species with intermediate floral trait distances to natives are most likely to receive flower visitors, as they are not too dissimilar and may still share flower visitors with native species, but not too similar to compete for flower visitors with them.
    5. The non-linear patterns between floral visitation and similarity of the alien and native species suggest that an interplay of facilitation and competition simultaneously drives the formation of novel plant-pollinator interactions.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
570 Biowissenschaften, Biologie

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Darwin's naturalization hypothesis, environmental filtering, exotic species, floral traits, invasion ecology, limiting similarity, phylogenetic distance, pollination niche

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ISO 690RAZANAJATOVO, Mialy, Felana RAKOTO JOSEPH, Princy RAJAONARIVELO ANDRIANINA, Mark VAN KLEUNEN, 2022. Floral visitation to alien plants is non‐linearly related to their phylogenetic and floral similarity to native plants. In: Functional Ecology. Wiley. 2022, 36(10), pp. 2508-2519. ISSN 0269-8463. eISSN 1365-2435. Available under: doi: 10.1111/1365-2435.14156
BibTex
@article{Razanajatovo2022-08-10Flora-58278,
  year={2022},
  doi={10.1111/1365-2435.14156},
  title={Floral visitation to alien plants is non‐linearly related to their phylogenetic and floral similarity to native plants},
  number={10},
  volume={36},
  issn={0269-8463},
  journal={Functional Ecology},
  pages={2508--2519},
  author={Razanajatovo, Mialy and Rakoto Joseph, Felana and Rajaonarivelo Andrianina, Princy and van Kleunen, Mark},
  note={MR was supported by the German Research Foundation DFG (RA 3009/1-1).}
}
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MR was supported by the German Research Foundation DFG (RA 3009/1-1).
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