Adjustments to the French syrphid fauna following from revision of the Iberian Merodon species (Diptera, Syrphidae)

Speight, Martin C.D.; Sarthou, Jean-Pierre

doi:10.3406/bsef.2008.2126

Cited by 10 publications

(41 citation statements)

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“…Since hoverfly distribution is closely associated with both adult and larval traits, we also examined the abundance of hoverfly larvae trophic groups across investigated land use types, which is particularly useful when analysing the impact of agricultural landscapes (Meyer et al, 2009; Moquet et al, 2018). For this purpose, in accordance with the approach adopted by other authors (Speight, 2020; Speight et al, 2015), we considered the following five trophic groups: saproxylic, phytophagous developing in roots, phytophagous developing in bulbs, zoophagous, and saprophagous. In addition, we examined wild bee nesting traits across the investigated land cover types by considering four different nesting traits: ground nesters, renters, cavity nesters and wood nesters.…”

Section: Discussionmentioning

confidence: 99%

Forest and grassland habitats support pollinator diversity more than wildflowers and sunflower monoculture

Vujanović

Losapio

Mesaroš

et al. 2023

Ecological Entomology

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1. Intensively managed agricultural landscapes often lack suitable habitats to support diverse wildlife, particularly harming pollinator communities. Besides mass flowering crops, remnant patches of natural and semi-natural vegetation may play a key role in maintaining and conserving biodiversity. Yet, the effects of different natural habitats, including forests and grasslands, on different pollinator communities are poorly understood at the landscape scale.2. We examined the abundance, richness, and diversity of wild bees and hoverflies, two key pollinator groups, across a land-use gradient spanning forest edges, grassland, wildflower strips, and sunflower monoculture. We also examined the distribution of hoverfly larvae trophic guilds and wild bee nesting traits across the above-mentioned land-use gradient. Finally, we evaluated the impact of landscape structure (forest, grassland, and water cover in the surrounding landscape) on pollinator community composition.3. Our results indicate that forest and grassland habitats supported a higher abundance and greater richness of pollinators than wildflower strips and sunflower monocultures. Furthermore, hoverflies were more sensitive to habitat and floristic homogenization than wild bees. Sunflower and wildflower habitats also hosted a lower diversity of larvae trophic guilds and wild bee nesting guilds as compared to forests and grasslands. 4. Our study suggests that conserving and restoring forest and grassland habitats within agricultural mosaics may serve as the main 'refuge' for wild pollinators.

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Section: Discussionmentioning

confidence: 99%

Forest and grassland habitats support pollinator diversity more than wildflowers and sunflower monoculture

Vujanović

Losapio

Mesaroš

et al. 2023

Ecological Entomology

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“…For hoverfly species, we used the following traits: average of the first and last month of flight period, hereafter ‘mid‐flight time’ (Speight, 2010); and body size (body length in millimetres, as the average of min–max values; Tóth, 2017).…”

Section: Methodsmentioning

confidence: 99%

“…For insect-pollinated flowering plant species, we assigned the following traits: average of the first and last month of the flowering period, hereafter 'mid-flowering time' (Király, 2009) For hoverfly species, we used the following traits: average of the first and last month of flight period, hereafter 'mid-flight time' (Speight, 2010); and body size (body length in millimetres, as the average of min-max values; T oth, 2017).…”

Section: Trait Datasetsmentioning

confidence: 99%

Trait‐based effects of plant invasion on floral resources, hoverflies and bees

Szigeti

Fenesi

Botta‐Dukát

et al. 2023

Insect Conserv Diversity

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Plant invasions can lead to homogeneous communities with decreased functional diversity. However, invasive plants, with various morphological and phenological traits, may drive pollinator communities in a less predictable, more complex way. They can promote pollinators compatible with their floral traits, while leaving others without foraging resources. Our observational study on 10 invasive herbaceous species applied a traitbased approach to investigate plant invasion-driven changes in floral resources, hoverfly and bee communities. We sampled invaded and non-invaded (control) sites before and during the flowering of the invasive plants. We analysed the differences in floral traits between invasive and native plants, functional diversity and trait distributions of flower and pollinator communities between the invaded and control sites. Five invasive plant species differed from natives in floral traits. Plant invasion caused species-specific changes in functional diversity and trait distributions of communities. For instance, invaded sites had a decreased functional diversity of hoverflies before flowering of invasive species, and larger hoverflies during flowering of invasive species compared with control sites. Smaller bees were associated with invasive plants with shallow flowers, while larger and long-tongued bees were associated with two invasive species with restricted floral access. Similar to previous studies, pollinator traits showed mixed or neutral responses to plant invasion. This is probably due to the high integration capability of invasive plants into plant-pollinator systems, or limitations in sampling, trait resolution, and unrevealed environmental factors. We provide recommendations for future studies to better understand the trait-based community composition of flowering plants and pollinators.

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“…To take into account the role of life history trait spectrum in pollination of invasive goldenrods, pollinator body size, flight period, food preferences, nesting preferences, parasitism and sociality were obtained from a review of the literature (Banaszak & Romasenko, 1998; Celary, 1991, 1995, 1999; Celary & Dylewska, 1988; Dylewska, 1987; Dylewska & Wiśniowski, 2003; Pesenko et al., 2000; Scheuchl, 2000; Speight, 2011; van Veen, 2004; Westrich, 1990) or based on direct measurements (body size) of at least 10 specimens stored in collections at the Polish Academy of Sciences and The Jan Kochanowski University. Pollinator body size and flight period were collected for all pollinator species.…”

Section: Methodsmentioning

confidence: 99%

Invader–pollinator paradox: Invasive goldenrods benefit from large size pollinators

Moroń

Marjańska

Skórka

et al. 2021

Diversity and Distributions

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Aim Mutualistic interactions between alien plants and native pollinators are needed to enable plant invasions. Although the increasing abundance of invasive plants in a habitat causes a dramatic decline of native pollinators, pollination services received by invaders are often sustained. This invader–pollinator paradox might be attributed to differences in pollination effectiveness and varying vulnerability to invasion among pollinators with different life history traits. In an experimental study, we explored the relationships between pollinator body size, pollination effectiveness and abundance of invasive species. Location Kraków area, Poland. Methods We placed a pair of potted invasive goldenrods (Solidago gigantea) at 25 sites differing in goldenrod abundance (cover: 0%–100%). Floral visitation rate of the potted goldenrods, as well as seed set and viability, was noted. Results Species richness of pollinators visiting inflorescences decreased with the increase of the goldenrod cover, whereas the floral visitation rate remained unchanged. However, the seed set was positively related to the goldenrod cover. Body size of floral visitors was structured along with the goldenrod cover so that pollinators' size increased with the cover. Also, the seed set of the potted plants, as well as goldenrod seed viability, depended positively on the body size of visiting pollinators. Main conclusions Invasive goldenrods did not suffer from pollinator shortage and ineffective pollination, especially in habitats densely covered by the invader, due to the presence of large‐bodied pollinators. Our study highlights that pollination and reproduction of invasive plants might be sustained through ecological filtering, affecting the composition of pollinators with traits increasing pollination effectiveness.

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Adjustments to the French syrphid fauna following from revision of the Iberian Merodon species (Diptera, Syrphidae)

Cited by 10 publications

References 0 publications

Forest and grassland habitats support pollinator diversity more than wildflowers and sunflower monoculture

Forest and grassland habitats support pollinator diversity more than wildflowers and sunflower monoculture

Trait‐based effects of plant invasion on floral resources, hoverflies and bees

Invader–pollinator paradox: Invasive goldenrods benefit from large size pollinators

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