Annual variation across functional traits: The effects of precipitation and land use on four wild bee species DOI Creative Commons
Katherine D. Chau,

Bita Ghafarifarokhzad,

Anthony C. Ayers

et al.

Ecological Entomology, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Abstract Understanding the impacts of urbanization and climate change on organisms has become increasingly critical in ecology conservation as these anthropogenic stressors negatively impact wildlife biodiversity, especially pollinators such bees. We analysed demographic (abundance sex ratio) morphological (body size wing wear) responses to inter‐annual variation four common wild bee species across an urban gradient Toronto, Canada. observed more significant shifts demography with precipitation than urbanization, diverse patterns depending species. The drier active season saw a decrease abundance for Agapostemon virescens Ceratina calcarata , whereas Bombus impatiens Xenoglossa pruinosa increased when compared previous year. Wetter seasons resulted smaller body sizes greater wear all examined. For larger bees ( A. B. X. ), increasing significantly females only foraging effort reduced intensity increased. small, cavity‐nesting bee, C. exhibited urbanization. Moderate better supported most assemblages morphology, suggesting that moderate land use provides green spaces adequate resources

Language: Английский

Urbanization Impacts Top Predators and Alters Biotic Interactions in Predator–Prey–Mutualistic Communities of Urban Dry Grasslands DOI Creative Commons
Tanja M. Straka, Viktoriia Radchuk, Ingo Kowarik

et al.

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 1, 2025

Urbanization as a major driver of global change modifies biodiversity patterns and the abundance interactions among species or functional groups. For example, urbanization can negatively impact both predator-prey mutualistic relationships. However, empirical studies on how biotic, particularly multitrophic, are still limited. In this study, we applied framework focused predator-prey-mutualistic relationship involving communities insect-pollinated vascular plants, pollinators (bees hoverflies), predatory spiders, sand lizards top predators to test (i) effect richness at different trophic levels (ii) regulation biotic using correlations between abundances proxy. By assessing 56 dry grassland patches in Berlin, Germany, found that higher (sand lizard well spider abundance) were significantly impacted by whereas affected lesser degree (only abundance, but not richness). contrast, plants urbanization. Path analyses revealed significant relationships low-urbanized areas. these areas, observed bottom-up-regulated (plants-pollinators, pollinators-predatory spiders), top-down-regulated lizards-pollinators, spiders-pollinators). no highly urbanized sites. Our results suggest bottom-up is stronger than top-down To our knowledge, first study examine effects determine whether regulated processes. These findings enhance understanding multitrophic urban environments their associated ecosystem services, such pollination, thereby supporting efforts conservation.

Language: Английский

Citations

0
STINGLEES BEES AND URBAN SPACES: AN INVESTIGATION OF THE CONDITIONS FOR ADAPTATION TO CITY BUILDINGS AND LANDSCAPING DOI Creative Commons

D.T.B. Pereira,

Alexandre Monkolski,

Edimar Tenutti

et al.

Revista Ibero-Americana de Humanidades, Ciências e Educação, Journal Year: 2025, Volume and Issue: 11(1), P. 1196 - 1221

Published: Jan. 15, 2025

Stingless native bees are essential for the preservation of ecosystems as they contribute to maintenance biodiversity and stability forest fragments. Information on how these species behave in urban environments is still scarce Brazil. For this reason, aim study was investigate occurrence stingless area city Realeza (PR) through localization nests active passive capture methods. Sampling conducted between October December 2022, a period peak nectar-producing flowering region. The searches were carried out five sectors, covering both public private areas, aspects landscape such floral species, physical characteristics buildings, nesting substrates recorded. During survey, 23 Tetragonisca angustula Scaptotrigona depilis recorded, foraging activities bipunctata Plebeia spp. also detected. fragments face challenges due urbanization exotic vegetation. adapts artificial substrates, while depends natural cavities. Wooden houses favor nesting, strategies shelters, plants, sustainable cultural practices conserving pollinators ecosystem services.

Language: Английский

Citations

0
How many bees fit in the city? A spatial ecological case study to conserve urban wild bees DOI Creative Commons
Julia Lanner, Peter Unglaub, C. Rohrbach

et al.

Urban Ecosystems, Journal Year: 2025, Volume and Issue: 28(2)

Published: Jan. 28, 2025

Abstract Pollination is crucial for biodiversity and food security, with bees playing a significant role. The growing popularity of urban beekeeping leading to increasing honeybee densities in cities, raising concerns about competition pollen nectar wild due limited foraging resources densely urbanized areas. To assess the current bee occurrences honeybees protected areas Central European city, we focused on ecological similarities between bees. We compiled an inventory 462 species documented since 1990 Vienna (Austria) conducted survey apiary locations cooperation beekeepers. calculated indices richness, rarity, and, based flower-visiting traits, trait similarity found that approximately four times more colonies were kept central 2023 than habitat may support. In parts Vienna’s nature conservation areas, number also exceeded density 3.5 per km² recommended by literature. Results indicate spatial overlap high hotspots, particularly like Natura 2000 rare was significantly increased, indicating potential elevated floral resources. This study highlights need planning balance conservation, recommending actions match quality mitigate competitive pressures.

Language: Английский

Citations

0
Behavior and mortality of Apis mellifera workers feeding on soft drinks in an urban environment DOI Creative Commons
Alexandre Igor de Azevedo Pereira, Lucas Adjuto Ulhoa, Carmen Rosa da Silva Curvêlo

et al.

Brazilian Journal of Biology, Journal Year: 2025, Volume and Issue: 85

Published: Jan. 1, 2025

Abstract Honeybees (Apis mellifera L.) (Hymenoptera: Apidae) coexists with humans in urban habitats foraging, mainly, sources containing carbohydrates. The behavior and risks for bees using soft drinks their diet are poorly studied. time spent by bee workers visiting drink leftovers plastic cups its death were evaluated. Bee more (200 mL) than flowers of Schinus sp. (Anacardiaceae), Anadenanthera (Fabaceae), Vernonia (Asteraceae), Citrus sinensis L. (Rutaceae) Cissus rhombifolia Vahl (Vitaceae), the five most visited honey plants field. Drowning mortality preference varied amount cups. We present first study drowning A. feeding on leftover areas, Brazilian Cerrado biome. This may help to understanding adaptive mechanisms honeybees explore dominated unusual diets.

Language: Английский

Citations

0
Unfavorable urban climatic conditions affects colony performance of an amazonian stingless bee (Apidae: Meliponini) DOI
D. C. R. Gatty, Jamille Costa Veiga, Daniel S. Pereira

et al.

Insectes Sociaux, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Language: Английский

Citations

0
Annual variation across functional traits: The effects of precipitation and land use on four wild bee species DOI Creative Commons
Katherine D. Chau,

Bita Ghafarifarokhzad,

Anthony C. Ayers

et al.

Ecological Entomology, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Abstract Understanding the impacts of urbanization and climate change on organisms has become increasingly critical in ecology conservation as these anthropogenic stressors negatively impact wildlife biodiversity, especially pollinators such bees. We analysed demographic (abundance sex ratio) morphological (body size wing wear) responses to inter‐annual variation four common wild bee species across an urban gradient Toronto, Canada. observed more significant shifts demography with precipitation than urbanization, diverse patterns depending species. The drier active season saw a decrease abundance for Agapostemon virescens Ceratina calcarata , whereas Bombus impatiens Xenoglossa pruinosa increased when compared previous year. Wetter seasons resulted smaller body sizes greater wear all examined. For larger bees ( A. B. X. ), increasing significantly females only foraging effort reduced intensity increased. small, cavity‐nesting bee, C. exhibited urbanization. Moderate better supported most assemblages morphology, suggesting that moderate land use provides green spaces adequate resources

Language: Английский

Citations

0