Contrasting impacts of highly invasive plant species on flower-visiting insect communities

Davis, Emily S.; Kelly, Ruth; Maggs, Christine A.; Stout, Jane C.

doi:10.1007/s10531-018-1525-y

Cited by 38 publications

(37 citation statements)

References 65 publications

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“…Few studies have found the effect of plant invasion to be similarly neutral (Ghazoul 2004;Nielsen et al 2008;Nienhuis et al 2009). Davis et al (2018) raised two basic scenarios of contrasting impacts of invasive plant species on flower-visiting insect communities: 1. the invasive plant species has a negative effect on all pollinator taxa; 2. the invasive plant species positively affects some pollinators owing to its resource supply, but negatively affects the rest of the pollinator community. We suggest here a new possible outcome, when an invasive plant species has basically a neutral effect on the pollinator community, i.e.…”

Section: Discussionmentioning

confidence: 99%

“…Invasive plant species have very diverse morphological and phenological traits, therefore they can have various effects on different pollinators (Morales and Traveset 2009;Stout and Tiedeken 2017;Davis et al 2018). Hence, understanding how resilient pollinator communities are to plant invasion cannot be sufficient without species specific studies (Dicks et al 2013;Stout and Tiedeken 2017;Knight et al 2018;Vanbergen et al 2018).…”

Section: Introductionmentioning

confidence: 99%

“…3Milkweed covers invaded sites to a maximum of 50% (absolute coverage) (Kelemen et al 2016) (in contrast to some other invasive plant species, which reach even 80-100%, see e.g. Fenesi et al 2015;Davis et al 2018), leaving probably more space for some elements of the native vegetation (Szitár et al 2018). These aspects offer a special opportunity to study the effects of an invasive plant species on pollinator communities that might have a rather different mechanism compared to other, formerly studied systems (Morales and Traveset 2009;Hulme et al 2013;Stout and Tiedeken 2017;Davis et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Neutral effect of an invasive plant species with specialized flower structure on native pollinator communities

et al. 2020

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Invasive plants modify native plant communities with serious consequences on plant-pollinator interactions. Invasion by common milkweed (Asclepias syriaca L.) threatens natural and agricultural habitats in Europe, with unknown effects on pollinators. Its special flower structure, habitat requirements and phenology offer novel insights into pollination ecology aspects of plant invasion. We compared flowering plant and pollinator communities between invaded and control sites, and the flower visitors between native plants and common milkweed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Neutral effect of an invasive plant species with specialized flower structure on native pollinator communities

et al. 2020

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“…These invasive alien plants can have contrasting effects on wild bees: positive, neutral, or even negative. Surely, the impact of invasive alien plant species can depend of several factors like ecological context or life history traits [81], leading some species to suffer from the invasion [50] while others can have some benefit from it [50,175,176]. However, an invasion only occurs when an exotic plant with invasive potential encounters a sufficiently favorable environment [177].…”

Section: Dealing With Invasive Alien Speciesmentioning

confidence: 99%

Beyond the Decline of Wild Bees: Optimizing Conservation Measures and Bringing Together the Actors

Drossart

Gérard

2020

Insects

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Wild bees are facing a global decline mostly induced by numerous human factors for the last decades. In parallel, public interest for their conservation increased considerably, namely through numerous scientific studies relayed in the media. In spite of this broad interest, a lack of knowledge and understanding of the subject is blatant and reveals a gap between awareness and understanding. While their decline is extensively studied, information on conservation measures is often scattered in the literature. We are now beyond the precautionary principle and experts are calling for effective actions to promote wild bee diversity and the enhancement of environment quality. In this review, we draw a general and up-to-date assessment of the conservation methods, as well as their efficiency and the current projects that try to fill the gaps and optimize the conservation measures. Targeting bees, we focused our attention on (i) the protection and restoration of wild bee habitats, (ii) the conservation measures in anthropogenic habitats, (iii) the implementation of human made tools, (iv) how to deal with invasive alien species, and finally (v) how to communicate efficiently and accurately. This review can be considered as a needed catalyst to implement concrete and qualitative conversation actions for bees.

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“…Gerber et al (2008) demonstrated that riparian habitats invaded by Fallopia species harboured a reduced abundance and morphospecies richness of terrestrial invertebrates, whilst Ruckli et al (2013) showed that I. glandulifera supported a higher abundance and species richness of gastropods compared to uninvaded plots. A range of responses by flower-visiting insect communities at sites colonised by INNP were demonstrated by Davis et al (2018), including higher insect diversity associated with I. glandulifera and lower abundance of solitary bees and hoverflies associated with Heracleum mantegazzianum (giant hogweed).…”

Section: Introductionmentioning

confidence: 99%

All change at the water’s edge: invasion by non-native riparian plants negatively impacts terrestrial invertebrates

et al. 2019

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Riparian zones are complex, dynamic habitats that play a critical role in river ecosystem functioning. Terrestrial invertebrates comprise much of the diversity found in riparian habitats and facilitate the transfer of energy between aquatic and terrestrial systems. However, the consequences for terrestrial invertebrates of invasion of riparian zones by invasive non-native plants (INNP) remain poorly understood. Responses of terrestrial macroinvertebrate morphospecies to invasion by two common INNP, Fallopia japonica (Japanese knotweed) and Impatiens glandulifera (Himalayan balsam) were assessed, relative to local environmental factors. Terrestrial invertebrates were collected from 20 sites on low order streams in June and August alongside data on physical attributes and land use. Greater cover of F. japonica and I. glandulifera cover reduced total invertebrate abundance and morphospecies diversity at the individual sample scale, whilst increasing spatial heterogeneity of invertebrates at the site scale. Impatiens glandulifera reduced morphospecies diversity at the site scale with increasing cover, but this was not observed for F. japonica. INNP affected terrestrial invertebrate morphospecies abundance and diversity, to a greater extent than prevailing environmental conditions. Our findings therefore offer support for managing riparian plant invasions to improve habitat heterogeneity, restore terrestrial invertebrate diversity and repair aquatic-terrestrial linkages.

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Contrasting impacts of highly invasive plant species on flower-visiting insect communities

Cited by 38 publications

References 65 publications

Neutral effect of an invasive plant species with specialized flower structure on native pollinator communities

Neutral effect of an invasive plant species with specialized flower structure on native pollinator communities

Beyond the Decline of Wild Bees: Optimizing Conservation Measures and Bringing Together the Actors

All change at the water’s edge: invasion by non-native riparian plants negatively impacts terrestrial invertebrates

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