The Response of Floral Traits Associated with Pollinator Attraction to Environmental Changes Expected under Anthropogenic Climate Change in High-Altitude Habitats

Brunet, Johanne; Etten, Megan L. Van

doi:10.1086/705591

Cited by 28 publications

(24 citation statements)

References 58 publications

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Section: Introductionmentioning

confidence: 99%

“…With regard to attraction traits, reduced water availability can alter scent composition and emission rates ( Burkle and Runyon 2016 ; Glenny et al 2018 ; Campbell et al 2019 ; Rering et al 2020 ), whereas colour has been shown to remain unaffected in some studies ( Arista et al 2013 ; Brunet and Van Etten 2019 ). Further, the number of flowers and the size of flowers is often reduced ( Elle and Hare 2002 ; Arista et al 2013 ; Burkle and Runyon 2016 ; Glenny et al 2018 ; Brunet and Van Etten 2019 ; Walter 2020 ). The reduction of size includes nectar/corolla tube width ( O’Halloran and Carr 2010 ; Gallagher and Campbell 2017 ; Mantel and Sweigart 2019 , but see Campbell and Wendlandt 2013 and Caruso 2006 ), although other traits related to pollination efficiency, such as style length or herkogamy, are often less affected by drought or respond inconsistently ( Roy and Stanton 1999 ; Elle and Hare 2002 ; Halpern et al 2010 ; Kay and Picklum 2013 ; Miranda and Vieira 2014 ; Opedal et al 2016 ; Mantel and Sweigart 2019 ).…”

Section: Introductionmentioning

confidence: 99%

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Drought-induced reduction in flower size and abundance correlates with reduced flower visits by bumble bees

et al. 2021

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Reduced water availability can cause physiological stress in plants that affects floral development leading to changes in floral morphology and traits that mediate interactions with pollinators. As pollinators can detect small changes in trait expressions, drought-induced changes in floral traits could affect pollinator visitations. However, the linkage between changes in floral traits and pollinator visitations under drought conditions is not well explored. We therefore tested whether drought-induced changes in floral morphology and abundance of flowers are linked to changes in pollinator visitations. We conducted flight cage experiments with a radio frequency identification system for automated visitation recordings with bumble bees (Bombus terrestris) and common charlock (Sinapis arvensis) as the model system. In total, we recorded interactions for 31 foraging bumble bees and 6,569 flower visitations. We found that decreasing soil moisture content correlated with decreasing size of all measured morphological traits except stamen length and nectar tube width. The reductions in floral size, petal width and length, nectar tube depth and number of flowers resulted in decreasing visitation rates by bumble bees. These decreasing visitations under lower soil moisture availability might be explained by lower numbers of flowers and thus a reduced attractiveness and/or by increased difficulties experienced by bumble bees in handling smaller flowers. Whether these effects act additively or synergistically on pollinator behaviour and whether this leads to changes in pollen transfer and to different selection pressures require further investigation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Drought-induced reduction in flower size and abundance correlates with reduced flower visits by bumble bees

et al. 2021

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“…Environmental factors can affect flower density and duration, and pollinator behavior [ 20 – 22 , 36 , 40 – 43 ]. Low water availability decreases flower production which negatively impacts the resources provided by the plants to the bees [ 44 , 45 ]. According to Scorza et al [ 13 ], gene flow was correlated with distance and with weather conditions such as air temperature and rainfall.…”

Section: Introductionmentioning

confidence: 99%

Gene flow in commercial alfalfa (Medicago sativa subsp. sativa L.) seed production fields: Distance is the primary but not the sole influence on adventitious presence

et al. 2021

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In insect-pollinated crops, gene flow is affected by numerous factors including crop characteristics, mating system, life history, pollinators, and planting management practices. Previous studies have concentrated on the impact of distance between genetically engineered (GE) and conventional fields on adventitious presence (AP) which represents the unwanted presence of a GE gene. Variables other than distance, however, may affect AP. In addition, some AP is often present in the parent seed lots used to establish conventional fields. To identify variables that influence the proportion of AP in conventional alfalfa fields, we performed variable selection regression analyses. Analyses based on a sample-level and a field-level analysis gave similar, though not identical results. For the sample-level model, distance from the GE field explained 66% of the variance in AP, confirming its importance in affecting AP. The area of GE fields within the pollinator foraging range explained an additional 30% of the variation in AP in the model. The density of alfalfa leafcutting bee domiciles influenced AP in both models. To minimize AP in conventional alfalfa seed fields, management practices should focus on optimizing isolation distances while also considering the size of the GE pollen pool within the pollinator foraging range, and the foraging behavior of pollinators.

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“…A large number of publications on the indicative properties of silver birch arouse unremitting interest in the field of fluctuating asymmetry. For example, the influence of the elevation of the relief and the geographical position of populations with climatic features on FA is reported [5][6][7][8][9][10]. The obstacles are the different genetic status of the studied populations, i.e.…”

Section: Introductionmentioning

confidence: 99%

About the asymmetry structure of the leaf blade Common plantain

Baranov

Zykov²,

Biryukova³

et al. 2021

E3S Web Conf.

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Using the method of geometric morphometrics the contour of the image of the leaf blade of the Common plantain (Plantago major) was aligned along the axis of symmetry to answer the question of whether the asymmetry and shape were influenced by environmental pollution by vehicles and climatic conditions. Procrustes distances showed that fluctuating asymmetry was higher in roadside populations in 2019. In the control populations, a mixture of two types of asymmetry, fluctuating and directional, was obtained. In 2020 with high precipitation (47% more than in 2019), asymmetry was represented by higher directional asymmetry (p <0.0001), although the overall asymmetry remained the same. The nonparametric Kruskal-Wallis test showed the influence on the shape only climatic environments of the year (p <0.001). The geographical location of the populations and the combined effect of the factors year and the place of leaves gathering did not affect the shape of the leaf blade. In 2020, no data were obtained on the excess of asymmetry in roadside populations compared to the control, therefore authors conclude about the weak bioindicative properties of the Common plantain in response to traffic pollution.

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The Response of Floral Traits Associated with Pollinator Attraction to Environmental Changes Expected under Anthropogenic Climate Change in High-Altitude Habitats

Cited by 28 publications

References 58 publications

Drought-induced reduction in flower size and abundance correlates with reduced flower visits by bumble bees

Drought-induced reduction in flower size and abundance correlates with reduced flower visits by bumble bees

Gene flow in commercial alfalfa (Medicago sativa subsp. sativa L.) seed production fields: Distance is the primary but not the sole influence on adventitious presence

About the asymmetry structure of the leaf blade Common plantain

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