Floral trait functional diversity is related to soil characteristics and positively influences pollination function in semi-natural grasslands

Goulnik, Jérémie; Plantureux, Sylvain; Théry, Marc; Baude, Mathilde; Delattre, Maud; Reeth, Colin Van; Villerd, Jean; Michelot‐Antalik, Alice

doi:10.1016/j.agee.2020.107033

Cited by 26 publications

(18 citation statements)

References 71 publications

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“…Ref. [57] confirmed this hypothesis on permanent grasslands with 247 pollinator species. The highly diverse pollinator community recorded in this study may have increased the interaction frequency and the complementary between pollinator niches.…”

Section: Grassland Intensification and Pollination Visitation Frequencymentioning

confidence: 64%

“…Ref. [57] did not find a relation between intensification and interaction frequency in a set of 16 permanent grasslands belonging to an intensification gradient. The use of matching traits suggests that intensification decreases a community's attractiveness for pollinators because of decreases in the CWMs of the floral display (at least before mowing; [46]), flower height [18,76], depending on the region studied) and reward production [76] which are all positively correlated with interaction frequency [76,81].…”

Section: Grassland Intensification and Pollination Visitation Frequencymentioning

confidence: 94%

“…On temperate grasslands, species from these two families often have flowers with shallow corollas and easily accessible flower rewards [24,39]. Using our own database, which contains 10 Fabaceae and 10 Asteraceae plant species (10 individuals measured per species) sampled on 16 grasslands in Moselle, France (see [57] for details), and following the same methods as [38] to measure nectar tube depth, we found that Fabaceae had deeper nectar tubes than did Asteraceae (t-test: t = −4.00, df = 12.14, p = 0.0017; Figure 2). However, additional measurements of nectar tube depth in European grassland plants are needed to validate these results for a larger species pool.…”

Section: Effects Of Intensification On Barriers To the Exploitation Of Floral Rewards Nectar Tube Depthmentioning

confidence: 99%

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Using Matching Traits to Study the Impacts of Land-Use Intensification on Plant–Pollinator Interactions in European Grasslands: A Review

Goulnik

Plantureux

Dajoz

et al. 2021

Insects

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Permanent grasslands are suitable habitats for many plant and animal species, among which are pollinating insects that provide a wide range of ecosystem services. A global crisis in pollination ecosystem service has been highlighted in recent decades, partly the result of land-use intensification. At the grassland scale, however, the underlying mechanisms of land-use intensification that affect plant–pollinator interactions and pollination remain understudied. In this review, we first synthesise the literature to provide new insights into the relationships between land-use intensification and pollination by using matching community and interaction traits. We then identify knowledge gaps and summarise how land-use intensification of grassland influences floral traits that may in turn be associated with modifications to pollinator matching traits. Last, we summarise how these modifications may affect pollination function on permanent grasslands. Overall, land-use intensification may lead to a shift in flower colour, a decrease in mean nectar tube depth and a decrease in reward production and pollen quality at the community level. This, in turn, may generate a decrease in pollinator mouthparts length and body size, that may favour pollinators that require a low amount of floral reward. We found no study citing the effect of land-use intensification on volatile organic compounds emitted by flowers despite the importance of these molecules in pollinator community composition. Overall, our review highlighted major knowledge gaps about the effects of land-use intensification on plant–pollinator interactions, and suggests that land-use intensification could favour plants with generalised floral traits that adversely affect pollination.

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Section: Grassland Intensification and Pollination Visitation Frequencymentioning

confidence: 64%

Section: Grassland Intensification and Pollination Visitation Frequencymentioning

confidence: 94%

Section: Effects Of Intensification On Barriers To the Exploitation Of Floral Rewards Nectar Tube Depthmentioning

confidence: 99%

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Using Matching Traits to Study the Impacts of Land-Use Intensification on Plant–Pollinator Interactions in European Grasslands: A Review

Goulnik

Plantureux

Dajoz

et al. 2021

Insects

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“…This relationship resulted from the fact that diverse tree richness offered various ecological niches that supported the activities of most invertebrates, providing several ecosystem functions [122,123]. For instance, higher functional richness may provide suitable foraging and nesting resources, favor food web interactions, and support the survival and activities of invertebrates [124], thereby influencing ecosystem multifunctionality [125].…”

Section: Functional Structure and Soil Properties Influence Ecosystem...mentioning

confidence: 99%

The Functional Structure of Tropical Plant Communities and Soil Properties Enhance Ecosystem Functioning and Multifunctionality in Different Ecosystems in Ghana

Damptey

Birkhofer

Menor

et al. 2022

Forests

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Plant functional traits are useful in tracking changes in the environment, and play an important role in determining ecosystem functioning. The relationship between plant functional traits and ecosystem functioning remains unclear, although there is growing evidence on this relationship. In this study, we tested whether the functional structure of vegetation has significant effects on the provision of ecosystem services. We analysed plant trait composition (specific leaf area, leaf carbon and nitrogen ratio, isotopic carbon fraction, stem dry matter content, seed mass and plant height), soil parameters (nutrients, pH, bulk density) and proxies of ecosystem services (carbon stock, decomposition rate, invertebrate activity) in twenty-four plots in three tropical ecosystems (active restored and natural forests and an agroforestry system) in Ghana. For each plot, we measured above-ground biomass, decomposition rates of leaves and invertebrate activity as proxies for the provision of ecosystem services to evaluate (i) whether there were differences in functional composition and soil properties and their magnitude between ecosystem types. We further aimed to (ii) determine whether the functional structure and/or soil parameters drove ecosystem functions and multifunctionality in the three ecosystem types. For functional composition, both the leaf economic spectrum and seed mass dimension clearly separated the ecosystem types. The natural forest was more dominated by acquisitive plants than the other two ecosystem types, while the non-natural forests (agroforest and restored forest) showed higher variation in the functional space. The natural forest had higher values of soil properties than the restored forest and the agroforestry system, with the differences between the restored and agroforestry systems driven by bulk density. Levels of ecosystem service proxies and multifunctionality were positively related to the functional richness of forest plots and were mainly explained by the differences in site conditions. Our study demonstrated the effects of functional forest structure on ecosystem services in different forest ecosystems located in the semi-deciduous forest zone of Ghana.

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“…Herbivore-induced defenses are known to alter pollinator behavior, e.g. through changing flower signals and/or nectar chemistry, usually rendering flowers less attractive to pollinators (Lehtila and Strauss 1997, Adler et al 2006, Kessler et al 2011, Schiestl et al 2014, Rusman et al 2020), but see (Poveda et al 2003, Cozzolino et al 2015, Goulnik et al 2020). Other documented effects of herbivore-induced plasticity are shorter visitation times of pollinators (Bruinsma et al 2014, Ramos and Schiestl 2019), changes in pollination networks (Hoffmeister et al 2016), and even switches in pollinator guilds attracted to flowers (Kessler et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Plant phenotypic plasticity changes pollinator-mediated selection

Dorey

Schiestl

2022

Preprint

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Many organisms change their phenotype in response to the environment, a phenomenon called phenotypic plasticity. Yet we hardly understand how such plasticity can affect biotic interactions and the resulting phenotypic selection. Here we use fast cycling Brassica rapa plants in a proof-of-concept experiment in the greenhouse to study the link between plasticity and selection. We detected strong plasticity in morphology, nectar, and floral scent in response to different soil types and aphid herbivory. We found positive selection on nectar and several morphological traits. Bumblebee-mediated selection on a principle component representing plant height, flower number, and flowering time (mPC3) differed depending on soil type and herbivory. For plants growing in richer soil, selection was stronger in the absence of herbivores, whereas for plants growing in poorer soil selection was stronger with herbivory. We showed that bumblebees visited tall plants with many flowers over-proportionally when they were rare (i.e. in plants in poor soil with herbivory), thus causing stronger positive selection on this trait-combination. We suggest that with strong plasticity under most stressful conditions, a shift in pollinator behavior may speed up adaptation to local environmental factors.

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Floral trait functional diversity is related to soil characteristics and positively influences pollination function in semi-natural grasslands

Cited by 26 publications

References 71 publications

Using Matching Traits to Study the Impacts of Land-Use Intensification on Plant–Pollinator Interactions in European Grasslands: A Review

Using Matching Traits to Study the Impacts of Land-Use Intensification on Plant–Pollinator Interactions in European Grasslands: A Review

The Functional Structure of Tropical Plant Communities and Soil Properties Enhance Ecosystem Functioning and Multifunctionality in Different Ecosystems in Ghana

Plant phenotypic plasticity changes pollinator-mediated selection

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