Insecticide and low food quality treatments reduce health and pollination services of two key pollinator taxa DOI Creative Commons
Markus Birkenbach, Florian Straub,

Paul Weihermüller

et al.

Journal of Applied Ecology, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 23, 2024

Abstract Pesticides and the lack of floral resources are key drivers insect decline in agricultural areas. Both land‐use stressors can have a variety synergistic sublethal effects on pollinators, affecting their health foraging behaviour. Pollinating insects include species with vastly different life histories, giving them potentially vulnerability resilience to stressors. However, most research has generally focused bees. Here, we contrast nutritional stress pesticide use social bumblebees solitary hoverflies. We experimentally tested neonicotinoid acetamiprid low‐quality food traits Bombus terrestris workers Episyrphus balteatus adults (ovarian development, body size colony development or survival). The behaviour treated pollinators was recorded semi‐field setup and, for B. , measured pollen amount surface deposited stigmata after single visit. affected bumblebee health. Additionally, insecticide‐treated showed increased flower handling times flight durations, while reduced stigmata. Syrphids were mostly by food, which decreased survival probability changed Furthermore, found an interactive effect between two stressors, reducing E. ovary development. Synthesis applications . Insecticide fitness both syrphid flies, possibly pollinator populations under natural conditions. Especially bumblebees, long‐term exposure led reduction provision pollination services, changing transfer. differences groups, showing that results gained from groups like bees should not be extrapolated all pollinators. Interactive indicate potential buffering high‐quality against other highlight importance considering synergies multiple risk assessments. This further emphasizes relevance such as wild strips areas conserve services.

Language: Английский

Plants other than animal-pollinated herbs provide wild bees with vital nutrients DOI Creative Commons
Michał Filipiak

Global Ecology and Conservation, Journal Year: 2024, Volume and Issue: 52, P. e02984 - e02984

Published: May 10, 2024

Adult pollinators that forage primarily for energy have traditionally guided our understanding of plant–pollinator interactions, leading to assumptions about the importance different plants pollinators. Consequently, pollinator conservation strategies potentially overlook balance juvenile diets. I studied a representative bee, Osmia bicornis, explore contributions various nutritional quality diet. Using ecological stoichiometry and micronutrient ecology, investigated proportions vital body-building chemical elements (C, N, P, S, K, Na, Ca, Mg, Fe, Zn, Mn Cu; henceforth "nutrients") in larval pollen loads. considered botanical origin, location sexual dimorphism niche as factors influencing nutrient Redundancy analysis indicated main factor determining proportion was which accounted 70.17% variation; contributed 20.21%, sex 8.43%. Among 30 taxa composing loads, determinants content were oak, maple, chestnut, cabbage family, buttercup, grasses. Trees wind-pollinated provided important nutrients. Oak maple contributors nutrients essential growth body development (N, Cu, Zn). Grasses buttercups is bees. Complex habitat management schemes extending beyond traditional seed mixes are conservation, non-obvious plant species provide should be included efforts create complex landscape enabling balanced

Language: Английский

Citations

7
Deforestation narrows pollen diet diversity of generalist orchid bees DOI Creative Commons
Samuel Boff, Cynthia Fernandes Pinto da Luz, Josué Raizer

et al.

Journal of Insect Conservation, Journal Year: 2024, Volume and Issue: 28(3), P. 561 - 575

Published: April 15, 2024

Abstract Orchid bee species are important pollinators in the Neotropics. While male orchid bees known to have a close interaction with odor-rewarding flowers, females often pollen generalists. In current study, we investigated differences diet diversity of various vegetation types and across sites varying levels forest cover by means an analysis frass pellets bee, Euglossa cordata (Linnaeus, 1758), multiple based on literature review. The grains found inner part brood cells were used assess plant composition making up E. areas state São Paulo Brazil. We that this differed among types, specialization was lower forested areas. Forest appeared be factor mostly associated richness nests . Number per nest also cover. model effect as tested inclusion published data newly generated for annectans This new set allowed understand influence more extensive geographic scale. diversified several species. Implications insect conservation Since offered larva is survival health, our results indicate relying higher resilient population. Such findings emphasize importance forests, especially Neotropical region where many pollinator adapted continuous environments.

Language: Английский

Citations

4
The Distribution of Wild Bee Species Along a Latitudinal Gradient in Northern Europe Depends on Their Flower Preferences DOI Creative Commons
Marianne S. Torvanger, Yoko L. Dupont, Jens M. Olesen

et al.

Diversity and Distributions, Journal Year: 2025, Volume and Issue: 31(2)

Published: Feb. 1, 2025

ABSTRACT Aim The functional diversity of bees contribute to the maintenance plant biodiversity because different species wild prefer and pollinate plants. Many bees, in particular with narrow flower preferences or specialised habitat requirements, are threatened by landscape homogenisation climate change. Nonetheless, we still lack an understanding large‐scale impacts anthropogenic stressors on distribution bee preferences. Location Northern Europe: Norway, Denmark Germany. Methods We combine a dataset comprising ~30,000 observations presences absences occurrences from structured surveys at 269 sites northern Europe investigate if modulate distributions across multiple environmental gradients. Bees were assigned continuous trait separating preference for short vs. tubular flowers. Results observe that either flowers (Fabaceae) plants shallow (including Apiaceae Brassicaceae) can be described score. likelihood observing along latitudinal gradient—encompassing variation temperature, atmospheric N deposition elevation—is dependent its Specifically, have higher occurrence latitudes, while non‐tubular increase towards south. Main Conclusions Our results improve our how species‐specific drives community‐wide shifts therefore help devise region‐specific conservation strategies.

Language: Английский

Citations

0
Understory plant community responses following herbicide application in loblolly pine (Pinus taeda L.) stands DOI
Emma L. Briggs, Daniel U. Greene, Christine Cairns Fortuin

et al.

Forest Ecology and Management, Journal Year: 2025, Volume and Issue: 585, P. 122617 - 122617

Published: March 10, 2025

Language: Английский

Citations

0
Plants for Wild Bees—Field Records in Bulgaria DOI Creative Commons
Ekaterina Kozuharova, T. Trifonov, Christina Stoycheva

et al.

Diversity, Journal Year: 2025, Volume and Issue: 17(3), P. 214 - 214

Published: March 17, 2025

One of the eight shortfalls in European wild bee data is knowledge flowering plants they favor. This particular importance for gardens and wildflower strips initiatives aiming to provide forage bees. The aim this study a list that are used food by certain taxa bees Bulgaria evaluate their potential cultivation strips. In relation this, we discuss plant specialization We summarize our observations on pollination faunistic records considering several grassland habitats territory at altitudes between 0 1500 m above sea level, during last 30 years. More than 54 listed. They belong families Apidae, Andrenidae, Colletidae, Halictidae, Megachilidae. Some these identified species others genus or family level. Among recorded observed oligolectic (22.2%). listed flower visitors 60 belonging 20 families, which offer nectar and/or pollen. bees’ predominantly from Fabaceae (15 species), Lamiaceae (14 Asteraceae (9 etc. perennials 67%, while annuals 9%, annual biennial 6%, biennials 5%, seed germination specifics plants. studies needed field. conservation may be supported restoration activities, but process depends many factors, including difficulties. Therefore, natural must preserved protected.

Language: Английский

Citations

0
Wildflower Strips Increase Aculeate Pollinator Diversity but Not Abundance in Agricultural Landscapes with Rapeseed in Crop Rotations DOI Creative Commons
Eduardas Budrys, Anna Budrienė,

Miglė Lazauskaitė

et al.

Diversity, Journal Year: 2025, Volume and Issue: 17(4), P. 263 - 263

Published: April 8, 2025

The decline of pollinators in agricultural environments poses a significant threat to pollination ecosystem services. Wildflower strips are proposed as strategy support pollinator populations and enhance their species richness diversity. We investigated the efficacy flowering plant mixture maintaining aculeate diversity (wild bees, predatory wasps, kleptoparasites) within intensively managed where rapeseed is common rotational crop. Over four years, were counted five times per season using 250 m transect walks. Our results demonstrated that evenness abundance distribution higher sown wildflower strips, whereas mean was greater remnants semi-natural grassland. low assemblage habitat attributed dominance sweat bee Lasioglossum pauxillum, which thrived on mass-flowering concentrated grassland fragments after harvest. conclude enriched with mixtures effectively Furthermore, both preserved patches unmanaged or minimally habitats can essentially contribute services intensive environments.

Language: Английский

Citations

0
Trace Metals in Nectar of Important Urban Pollinator Forage Plants: A Direct Exposure Risk to Pollinators and Nectar‐Feeding Animals in Cities DOI Creative Commons
Sarah B. Scott, Mary M. Gardiner

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(4)

Published: April 1, 2025

ABSTRACT Pollinators are exposed to metals while foraging in the landscape and accumulate detectable concentrations of trace within their bodies, although major exposure routes remain unclear. As nectar is main source food for pollinators, we analyzed metal content floral rewards identify if contained may serve as an oral route. Nectar from flowering plant species growing vacant lots city Cleveland, OH, USA was extracted using a centrifuge tested arsenic, cadmium, chromium, lead ICP‐MS. We collected volunteer flower that common pollinator forage plants. varied by species, but not location. arsenic ranged 0 8.44 μg/L, cadmium 32.99 chromium 45.69 135.31 μg/L. The presence these soil contaminants indicates uptake concentration resources likely route pollinators nectar‐feeding animals.

Language: Английский

Citations

0
Impact of Taxonomic and Functional Grouping on Specialization in Plant–Pollinator Networks DOI
Ehsan Rahimi, Chuleui Jung

Entomological Research, Journal Year: 2025, Volume and Issue: 55(5)

Published: May 1, 2025

ABSTRACT By examining plant–pollinator networks, researchers can create focused conservation and restoration strategies to support the long‐term sustainability of both plant pollinator populations. This research aims (1) examine how grouping pollinators into functional groups higher taxonomic levels affects degree specialization (2) determine proportion attractive flowers shared among different for pollinators. For this study, we analyzed 93 networks. We identified family order each insect establish groupings. At stage, interactions related species at were aggregated. grouping, classified such as bees, beetles, flies, moths, butterflies, ants, others. To measure network specialization, employed H2 metric, where values range between 0 1, with 1 indicating maximum specialization. then utilized t ‐test if there significant differences in Additionally, calculated overlap plants most across four classifications within network. Our findings revealed that networks varied grouping. observed selection depending on level classification employed. Certain may not necessarily be recognized or groups.

Language: Английский

Citations

0
Bee-Friendly Native Seed Mixtures for the Greening of Solar Parks DOI Creative Commons
Maren Helen Meyer, Sandra Dullau,

Pascal Scholz

et al.

Land, Journal Year: 2023, Volume and Issue: 12(6), P. 1265 - 1265

Published: June 20, 2023

Photovoltaics is one of the key technologies for reducing greenhouse gas emissions and achieving climate neutrality Europe by 2050, which has led to promotion solar parks. These parks can span up several hundred hectares, grassland vegetation usually created between under panels. Establishing species-rich grasslands using native seed mixtures enhance a variety ecosystem services, including pollination. We present an overall concept designing promote pollinators, especially wild bees, in It takes into account specific site conditions, small-scale modified conditions caused panels, requirement avoid panel shading. highlight challenges constraints resulting from availability species on market. Furthermore, we provide easy-to-use index determining value bee enhancement apply it as example specifically designed The increased regional would allow more thorough consideration pollinator-relevant traits when composing mixtures, thereby enhancing services associated with pollinators such bees.

Language: Английский

Citations

7
A multitude of bee pollinators in a phenotypic specialist - pollinator diversity from the plant's perspective DOI Creative Commons
Noel Silló, Regine Claßen‐Bockhoff

Flora, Journal Year: 2024, Volume and Issue: 312, P. 152461 - 152461

Published: Feb. 7, 2024

Bilabiate flowers are phenotypically specialized and primarily pollinated by bees. However, this phenotypic specialization does not necessarily result in functional and/or ecological specialization. We use the bee-pollinated Salvia pratensis L. (Lamiaceae) as a model species to elucidate number of pollinators, their fitting flower behavior order identify best pollinators most capable foragers. Field observations at 12 localities between 2018 2023 revealed total 37 bee pollinators. Based on morphometric behavioral data, handling time per flower, visited minute an index proportion contacts with reproductive surfaces visit, big long-tongued were identified conclude that S. is specialist generalist same time. This combination advantageous assemblages moderately partners it combines advantages generalization (high pollinator species) those (economic pollen transfer).

Language: Английский

Citations

2