Contrasting patterns of herbivore and predator pressure on invasive and native plants

Engelkes, T.; Wouters, B.; Bezemer, T. Martijn; Harvey, Jeffrey A.; Putten, Wim H. van der

doi:10.1016/j.baae.2012.10.005

Cited by 15 publications

(9 citation statements)

References 27 publications

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“…Our review shows that herbivore densities are lower on invasive plants than on native plants but that predator densities do not differ. Future studies should examine whether herbivores indeed experience more top-down control on invasive plants than on native plants (42).…”

Section: Discussionmentioning

confidence: 99%

“…We identified five studies that have compared the abundance and richness of predators and parasitoids on native and exotic congeneric plants (Supplemental Table 1). Most of these studies report that carnivore abundance and richness do not differ between native and exotic plants (e.g., 42,118). However, one study conducted in Texas, reported that predators were more abundant and higher in richness on invasive Chinese tallow trees (Triadica sebifera) than on the native tree species Acer saccharinum, Platanus occidentalis, and Liquidambar styraciflua (59).…”

Section: Comparison Of Insect Communities On Invasive Plants and Natimentioning

confidence: 99%

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Response of Native Insect Communities to Invasive Plants

Bezemer

Harvey²,

Cronin

2014

Annu. Rev. Entomol.

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Invasive plants can disrupt a range of trophic interactions in native communities. As a novel resource they can affect the performance of native insect herbivores and their natural enemies such as parasitoids and predators, and this can lead to host shifts of these herbivores and natural enemies. Through the release of volatile compounds, and by changing the chemical complexity of the habitat, invasive plants can also affect the behavior of native insects such as herbivores, parasitoids, and pollinators. Studies that compare insects on related native and invasive plants in invaded habitats show that the abundance of insect herbivores is often lower on invasive plants, but that damage levels are similar. The impact of invasive plants on the population dynamics of resident insect species has been rarely examined, but invasive plants can influence the spatial and temporal dynamics of native insect (meta)populations and communities, ultimately leading to changes at the landscape level.

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Section: Discussionmentioning

confidence: 99%

Section: Comparison Of Insect Communities On Invasive Plants and Natimentioning

confidence: 99%

Response of Native Insect Communities to Invasive Plants

Bezemer

Harvey²,

Cronin

2014

Annu. Rev. Entomol.

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236

200

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“…For instance Engelkes et al . () discovered that invasion of a riparian zone by Rorippa austriaca and Senecio inaequidens led to significantly reduced herbivore abundance compared to native plant communities. They found that herbivores demonstrated less success on non‐native plants (bottom‐up control) and were subject to higher rates of predation pressure (top‐down control).…”

Section: Discussionmentioning

confidence: 99%

Invasive plants have different effects on trophic structure of green and brown food webs in terrestrial ecosystems: a meta‐analysis

et al. 2016

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Although invasive plants are a major source of terrestrial ecosystem degradation worldwide, it remains unclear which trophic levels above the base of the food web are most vulnerable to plant invasions. We performed a meta-analysis of 38 independent studies from 32 papers to examine how invasive plants alter major groupings of primary and secondary consumers in three globally distributed ecosystems: wetlands, woodlands and grasslands. Within each ecosystem we examined if green (grazing) food webs are more sensitive to plant invasions compared to brown (detrital) food webs. Invasive plants have strong negative effects on primary consumers (detritivores, bacterivores, fungivores, and/or herbivores) in woodlands and wetlands, which become less abundant in both green and brown food webs in woodlands and green webs in wetlands. Plant invasions increased abundances of secondary consumers (predators and/or parasitoids) only in woodland brown food webs and green webs in wetlands. Effects of invasive plants on grazing and detrital food webs clearly differed between ecosystems. Overall, invasive plants had the most pronounced effects on the trophic structure of wetlands and woodlands, but caused no detectable changes to grassland trophic structure.

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“…Changes in predator-prey and host-parasitoid interactions may be an alternative explanation for the decrease in fruit fly richness with high proportions of exotic host plant species (Jones & Gomulkiewicz, 2012). For example, predation pressure on herbivore insects on exotic hosts can be higher than on native hosts (Engelkes et al, 2012), which could lead to low richness of herbivores on exotic plants. Furthermore, recent results also shown that the number of parasitoids of endophagous insects can be influenced by host plant commonness (Nascimento et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Proportion of exotics and relatedness of host species mediate the positive effect of plant richness on the species richness of fruit flies

Gontijo

Vieira

Araújo

et al. 2014

Ecological Entomology

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1. All else being equal, the greater the local species richness of plants, the greater the number of associated herbivore species. Because most herbivore insects feed on a subset of closely related plant species, plant phylogenetic diversity is expected to play a key role in determining the number of herbivore species. What is not well known, however, is how an increase in the species richness of exotic plants affects the species richness of herbivores.2. In this study, we used plant-fruit fly interactions to investigate the influence of the proportion and species richness of exotic host plants on the species richness of herbivorous insects. We also tested whether the phylogenetic diversity of host plants increases when the number of exotic plant species increases.3. We found that the species richness of fruit flies is more accurately predicted by the richness of native host plants than by total plant species richness (including both native and exotic species). The proportion of exotic host species and the phylogenetic diversity of host plants had negative and positive effects, respectively, on the species richness of fruit flies.4. Our findings suggest that a positive effect of plant richness on herbivore richness occurs only when an increase in plant diversity involves plant species with which native herbivores share some evolutionary history.

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Contrasting patterns of herbivore and predator pressure on invasive and native plants

Cited by 15 publications

References 27 publications

Response of Native Insect Communities to Invasive Plants

Response of Native Insect Communities to Invasive Plants

Invasive plants have different effects on trophic structure of green and brown food webs in terrestrial ecosystems: a meta‐analysis

Proportion of exotics and relatedness of host species mediate the positive effect of plant richness on the species richness of fruit flies

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