10.5061/DRYAD.WM37PVMQT
Razanajatovo, Mialy
0000-0001-9181-7363
University of Hohenheim
Razanajatovo, Mialy
University of Hohenheim
Rakoto Joseph, Felana
University of Konstanz
Rajaonarivelo Andrianina, Princy
University of Konstanz
van Kleunen, Mark
University of Konstanz
Floral visitation to alien plants is non-linearly related to their
phylogenetic and floral similarity to native plants
Dryad
dataset
2022
Darwin’s Naturalization Hypothesis
environmental filtering
exotic species
floral traits
Invasion ecology
limiting similarity
phylogenetic distance
Pollination niche
FOS: Biological sciences
Deutsche Forschungsgemeinschaft
https://ror.org/018mejw64
RA 3009/1-1
2022-08-04T00:00:00Z
2022-08-04T00:00:00Z
en
https://doi.org/10.1101/2022.02.14.480304
https://doi.org/10.1111/1365-2435.14156
554127 bytes
3
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
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. 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 hours
(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. 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. 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. 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.