Dataset Information

Direct and Indirect Influence of Non-Native Neighbours on Pollination and Fruit Production of a Native Plant.

ABSTRACT:

Background

Entomophilous non-native plants can directly affect the pollination and reproductive success of native plant species and also indirectly, by altering the composition and abundance of floral resources in the invaded community. Separating direct from indirect effects is critical for understanding the mechanisms underlying the impacts of non-native species on recipient communities.

Objectives

Our aims are: (a) to explore both the direct effect of the non-native Hedysarum coronarium and its indirect effect, mediated by the alteration of floral diversity, on the pollinator visitation rate and fructification of the native Leopoldia comosa and (b) to distinguish whether the effects of the non-native species were due to its floral display or to its vegetative interactions.

Methods

We conducted field observations within a flower removal experimental setup (i.e. non-native species present, absent and with its inflorescences removed) at the neighbourhood scale.

Results

Our study illustrates the complexity of mechanisms involved in the impacts of non-native species on native species. Overall, Hedysarum increased pollinator visitation rates to Leopoldia target plants as a result of direct and indirect effects acting in the same direction. Due to its floral display, Hedysarum exerted a direct magnet effect attracting visits to native target plants, especially those made by the honeybee. Indirectly, Hedysarum also increased the visitation rate of native target plants. Due to the competition for resources mediated by its vegetative parts, it decreased floral diversity in the neighbourhoods, which was negatively related to the visitation rate to native target plants. Hedysarum overall also increased the fructification of Leopoldia target plants, even though such an increase was the result of other indirect effects compensating for the observed negative indirect effect mediated by the decrease of floral diversity.

SUBMITTER: Montero-Castano A

PROVIDER: S-EPMC4482463 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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Publications

Direct and Indirect Influence of Non-Native Neighbours on Pollination and Fruit Production of a Native Plant.

Montero-Castaño Ana A Vilà Montserrat M

PloS one 20150625 6

<h4>Background</h4>Entomophilous non-native plants can directly affect the pollination and reproductive success of native plant species and also indirectly, by altering the composition and abundance of floral resources in the invaded community. Separating direct from indirect effects is critical for understanding the mechanisms underlying the impacts of non-native species on recipient communities.<h4>Objectives</h4>Our aims are: (a) to explore both the direct effect of the non-native Hedysarum c ...[more]

PMID: 26110630

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Dataset Information

Direct and Indirect Influence of Non-Native Neighbours on Pollination and Fruit Production of a Native Plant.

Background

Objectives

Methods

Results

Publications

Direct and Indirect Influence of Non-Native Neighbours on Pollination and Fruit Production of a Native Plant.

Similar Datasets

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