Consequences of intraspecific competition for floral resources in heterogeneous landscapes for eusocial bees DOI Creative Commons
Richard J. Walters, Ola Olsson, Peter Olsson

et al.

Ecological Modelling, Journal Year: 2024, Volume and Issue: 496, P. 110844 - 110844

Published: Aug. 29, 2024

Agricultural intensification is widely recognised as a primary driver of pollinator loss, but the success land-management actions designed to remediate its impact often mixed. Payments farmers increase habitat connectivity or availability floral and nesting resources may only result in short-term gains even unintended consequences. The reasons lie changes interaction networks competition intensity that remain poorly understood. Models pollination service typically implicitly assume population dynamics are regulated by nest-site availability, though empirical evidence suggests occupancy likely at least part dependent on resource availability. To investigate consequences for coarse-grained agricultural landscapes we extended an established model bees combining optimal foraging dynamics, include new functions depletion realistic colony dynamics. We find intra-specific occurs late season forcing forage underutilised sites situated further towards their range limits. A lower rate energy acquisition ultimately limits size peak delays timing. Consequently, can limit distribution while same time contributing more stable efficacious service. Although was not found be important establishment success, effect hunger gap early indirectly influences later leading complex outcomes.

Language: Английский

Global Trends in Climate Suitability of Bees: Ups and Downs in a Warming World DOI Creative Commons
Ehsan Rahimi, Chuleui Jung

Insects, Journal Year: 2024, Volume and Issue: 15(2), P. 127 - 127

Published: Feb. 11, 2024

Bees represent vital natural assets contributing significantly to global food production and the maintenance of ecosystems. While studies on climate change effects impacting major pollinators like honeybees bumblebees raise concerns about diversity crop productivity, comprehensive global-scale analyses remain limited. This study explores repercussions warming 1365 bees across seven families worldwide. To compile a robust bee occurrence dataset, we utilized innovative ‘BeeBDC’ R package that amalgamated over 18.3 million records sourced from various repositories. Through species distribution models under SSP585 scenario in year 2070, assessed how influences suitability scale, examining impacts continents. Our findings suggested approximately 65% are likely witness decrease their distribution, with reductions averaging between 28% Australia 56% Europe. Moreover, our analysis indicated change’s impact is projected be more severe Africa Europe, while North America expected higher number (336) expanding distribution. Climate anticipated distributions could potentially disrupt existing pollinator–plant networks, posing ecological challenges emphasize importance pollinator diversity, synchrony plants bees, necessity for focused conservation efforts.

Language: Английский

Citations

17
Seasonal variation in the general availability of floral resources for pollinators in northwest Europe: A review of the data DOI Creative Commons
Ciaran Harris, Nicholas J. Balfour,

Francis L.W. Ratnieks

et al.

Biological Conservation, Journal Year: 2024, Volume and Issue: 298, P. 110774 - 110774

Published: Aug. 27, 2024

Language: Английский

Citations

7
Resource gaps pose the greatest threat for bumblebees during the colony establishment phase DOI Creative Commons
Matthias A. Becher, Grace Twiston‐Davies, Juliet L. Osborne

et al.

Insect Conservation and Diversity, Journal Year: 2024, Volume and Issue: 17(4), P. 676 - 689

Published: March 22, 2024

Abstract A common management intervention to support declining wild pollinators is ‘pollinator planting’. However, despite years of inclusion in conservation initiatives, global pollinator declines continue. Using the agent‐based model BEE‐STEWARD with two example species, Bombus terrestris (L. 1758) and B. pascuorum (Scopoli, 1763) (Hymenoptera: Apidae), we explore when during year bumblebee resource demand highest how that relates seasonal changes colony composition (numbers eggs, larvae, pupae adults). We then examine impact two‐week periods scarcity across year. Finally, enhancement early spring‐blooming herbaceous species or trees survival queen production. In United Kingdom, there a previously under‐appreciated ‘hungry gap’ for bumblebees March–April, before peak flight period, driven by demands larvae protein thermoregulation colony, rather than number adult bees. 2‐week gap forage availability this period drives 50%–87% drop production daughter queens. Adding early‐blooming had significant, positive, long‐term effects on probability Pollinator‐planting initiatives both national international schemes need include plants flower up 1 month adults target social are apparent field, dominate colony. This approach likely increase production, contributing towards halting reversing decline.

Language: Английский

Citations

6
Quantifying the production of plant pollen at the farm scale DOI Creative Commons

Ellen K. Wright,

Thomas P. Timberlake,

Mathilde Baude

et al.

New Phytologist, Journal Year: 2024, Volume and Issue: 242(6), P. 2888 - 2899

Published: April 15, 2024

Plant pollen is rich in protein, sterols and lipids, providing crucial nutrition for many pollinators. However, we know very little about the quantity, quality timing of availability real landscapes, limiting our ability to improve food supply We quantify floral longevity production a whole plant community first time, enabling us calculate daily availability. combine these data with abundance nectar measures from UK farmland at landscape scale throughout year. Pollen were significantly correlated unit, level. The species highest quantity on Salix spp. (38%), Filipendula ulmaria (14%), Rubus fruticosus (10%) Taraxacum officinale (9%). Hedgerows most pollen-rich habitats, but permanent pasture provided majority scale, because its large area. closely associated their phenology, both peaking late April, before declining steeply June remaining low Our provide starting point including resource assessments ensuring nutritional requirements pollinators are met landscapes.

Language: Английский

Citations

6
High rates of nectar depletion in summer grasslands indicate competitive conditions for pollinators DOI Creative Commons
Douglas B. Sponsler, Christophe Dominik,

Carolin Biegerl

et al.

Oikos, Journal Year: 2024, Volume and Issue: 2024(9)

Published: May 27, 2024

Competition among pollinators for floral resources is a phenomenon of both basic and applied importance. While competition difficult to measure directly under field conditions, it can be inferred indirectly through the measurement resource depletion. In this study, we conducted pollinator exclusion experiment calculate nectar depletion rates in summer across 16 grassland sites German regions Franconia Saxony‐Anhalt. Overall were estimated at 95% 79% Saxony‐Anhalt, indicating strong limitation likely nectar. Despite being ubiquitous our study regions, honey bees scarce time sampling. This demonstrates that wild alone are capable massive depletion, addition managed communities may intensify already competitive conditions. Nevertheless, manifest diversity indicates other factors, such as non‐trophic constraints or temporal variation limitation, mitigate despite immediate conditions acute scarcity.

Language: Английский

Citations

6
Neglecting non-bee pollinators may lead to substantial underestimation of competition risk among pollinators DOI Creative Commons
Fabrice Réquier,

Myriam Abdelli,

Mathilde Baude

et al.

Current Research in Insect Science, Journal Year: 2024, Volume and Issue: 6, P. 100093 - 100093

Published: Jan. 1, 2024

Due to the increasing pressures on bees, many beekeepers currently wish move their managed livestock of

Language: Английский

Citations

4
The evolutionary ecology of ethanol DOI Creative Commons

Anna C Bowland,

Amanda Melin,

David J. Hosken

et al.

Trends in Ecology & Evolution, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

The consumption of ethanol has frequently been seen as largely restricted to humans. Here, we take a broad eco-evolutionary approach understanding ethanol's potential impact on the natural world. There is growing evidence that present in many wild fruits, saps, and nectars ingestion offers benefits favour adaptations for its use multiple taxa. Explanations span both nutritional non-nutritional, with medicinal value or cognitive effects (with social-behavioural benefits) explored. We conclude ecologically relevant it shaped evolution species structured symbiotic relationships among organisms, including plants, yeast, bacteria, insects, mammals.

Language: Английский

Citations

4
Prepared learning in plant–pollinator interactions DOI
Andreia Figueiredo Dexheimer, Aimee S. Dunlap

Animal Behaviour, Journal Year: 2025, Volume and Issue: 222, P. 123112 - 123112

Published: Feb. 20, 2025

Language: Английский

Citations

0
A Day in the Life: Diel Rhythms Of Locomotor Activity in The Male Flower Chafer Beetle Valgus canaliculatus (Olivier) (Coleoptera: Scarabaeidae) DOI
Joseph Giulian, Darrell Moore,

Thomas C. Jones

et al.

The Coleopterists Bulletin, Journal Year: 2025, Volume and Issue: 79(1)

Published: Feb. 28, 2025

Language: Английский

Citations

0
Resource availability and competition shape pollinator trophic specialization in longleaf pine savannas DOI Creative Commons
Pablo Moreno‐García, Johanna E. Freeman, Benjamin Baiser

et al.

Basic and Applied Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

0