Impact of extreme events on pollinator assemblages

Erenler, Hilary E.; Gillman, Michael; Ollerton, Jeff

doi:10.1016/j.cois.2020.01.007

Cited by 9 publications

(6 citation statements)

References 49 publications

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“…to have an overall negative on plants, pollinator and their interactions when summarizing various flower and flower-visitor interactions measurements (Nicholson & Egan, 2020;Walter, 2018). Therefore, with climate change and increasing extreme events (Erenler et al, 2020;IPCC, 2014), we need a more detailed understanding of how temperature (Gérard et al, 2020), water deficit and drought affect pollination. Here, we provide a comprehensive quantitative synthesis to generalize the observed patterns, to identify methodological differences and to highlight steps to increase comparability across studies to improve future study design.…”

Section: Introductionmentioning

confidence: 99%

A meta‐analysis of responses in floral traits and flower–visitor interactions to water deficit

Kuppler

Kotowska

2021

Global Change Biology

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Alterations in water availability and drought events as predicted by climate change scenarios will increasingly impact natural communities with effects already emerging at present. Water deficit leads to increasing physiological stress in plants, likely affecting floral development and causing changes in floral morphology, nectar and pollen production or scent. Understanding how these floral traits are altered by water deficit is necessary to predict changes in plant-pollinator interactions and how communities are impacted in the future. Here we employ a meta-analysis approach to synthesize the current evidence of experimental water deficit on floral traits and plant-pollinator interactions. Furthermore, we explore experimental factors potentially increasing heterogeneity between studies and provide ideas how to enhance comparability between studies. In the end, we highlight future directions and knowledge gaps for floral traits and plant-pollinator interactions under water deficit. Our analysis showed consistent decreases in floral size, number of flowers and nectar volume to reduced water availability. Other floral traits such as the start of flowering or herkogamy showed no consistent pattern. This indicates that effects of reduced water availability differ between specific traits that are potentially involved in different functions such as pollinator attraction or efficiency. We found no general decreasing visitation rates with water deficit for flower-visitor interactions. Furthermore, the comparison of available studies suggests that increased reporting of plant stress severity and including more hydraulic and physiological measurements will improve the comparability across experiments and aid a more mechanistic understanding of plant-pollinator interactions under altered environmental conditions. Overall, our results show that water deficit has the potential to strongly affect plant-pollinator interactions via changes in specific floral traits. Linking these changes to pollination services and pollinator performance is one crucial step for understanding how changing water availability and drought events under climate change will alter plant and pollinator communities.

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Section: Introductionmentioning

confidence: 99%

A meta‐analysis of responses in floral traits and flower–visitor interactions to water deficit

Kuppler

Kotowska

2021

Global Change Biology

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“…Pollinator loss can cause interlinked degradation and later poverty spirals, trigger counterproductive human responses and finally result in a Pollinator-Loss Syndrome (Christmann, 2019a). Climate change can accelerate pollinator decline (Erenler et al, 2020;Gérard et al, 2020;Goulson et al, 2015;Potts et al, 2016), but pollinators are essential for climate change adaptation of plants and ecosystems as cross-pollination enriches genetic diversity (Christmann, 2019a).…”

Section: Introductionmentioning

confidence: 99%

Two enabling factors for farmer-driven pollinator protection in low- and middle-income countries

Christmann¹,

Aw‐Hassan²,

Güler

et al. 2021

International Journal of Agricultural Sustainability

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Reward-based wildflower strips are the most common approach for pollinator protection in high-income countries. Low-and middle-income countries cannot afford this practice. A promising pilot study in Uzbekistan introduced an alternative approach, Farming with Alternative Pollinators, focusing on farmers as target group, marketable habitat enhancement plants and a method-inherent incentive: higher income per surface achieved already in the first year. We hypothesized that higher income would be a replicable enabling factor across continents, but a knowledge-raising campaign would be necessary in many low-and middle-income countries. We assessed the replicability of the incentive with a small number of farmers in 2015-2016 in Morocco but focused on assessing if farmers have sufficient knowledge to recognize wild pollinators and use this approach. We conducted 766 interviews using a standardized questionnaire with randomly selected smallholder farmers in three culturally different farming societies of lowand middle-income countries (Morocco, Turkey and Benin). Farming with Alternative Pollinators induced higher income (75% (2015), 177% (2016)) also in Morocco. The trial and the survey show the indispensability of a knowledge-raising campaign as the second enabling factor. However, based on capacity building, Farming with Alternative Pollinators could have indeed high potential to promote pollinator protection in low-and middle-income countries.

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“…The impact of some extreme weather and climatic events on pollinator communities is well-characterized in the literature 69 – 71 . However, the significance of these events, including those that are less well-characterized (e.g., extreme frost events), and how such events might interact with other drivers of decline to exacerbate negative impacts on managed bee populations across Europe, is less well understood.…”

Section: Resultsmentioning

confidence: 99%

Emerging threats and opportunities to managed bee species in European agricultural systems: a horizon scan

Willcox,

Potts,

Brown

et al. 2023

Sci Rep

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Managed bee species provide essential pollination services that contribute to food security worldwide. However, managed bees face a diverse array of threats and anticipating these, and potential opportunities to reduce risks, is essential for the sustainable management of pollination services. We conducted a horizon scanning exercise with 20 experts from across Europe to identify emerging threats and opportunities for managed bees in European agricultural systems. An initial 63 issues were identified, and this was shortlisted to 21 issues through the horizon scanning process. These ranged from local landscape-level management to geopolitical issues on a continental and global scale across seven broad themes—Pesticides & pollutants, Technology, Management practices, Predators & parasites, Environmental stressors, Crop modification, and Political & trade influences. While we conducted this horizon scan within a European context, the opportunities and threats identified will likely be relevant to other regions. A renewed research and policy focus, especially on the highest-ranking issues, is required to maximise the value of these opportunities and mitigate threats to maintain sustainable and healthy managed bee pollinators within agricultural systems.

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Impact of extreme events on pollinator assemblages

Cited by 9 publications

References 49 publications

A meta‐analysis of responses in floral traits and flower–visitor interactions to water deficit

A meta‐analysis of responses in floral traits and flower–visitor interactions to water deficit

Two enabling factors for farmer-driven pollinator protection in low- and middle-income countries

Emerging threats and opportunities to managed bee species in European agricultural systems: a horizon scan

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