Temperature and not landscape composition shapes wild bee communities in an urban environment

Insect Conservation and Diversity, Год журнала: 2022, Номер 16(1), С. 65 - 76

Опубликована: Авг. 12, 2022

Abstract More than half of the world's population lives in urban areas, a proportion that is expected to increase. Even if urbanisation widely regarded as major threat global biodiversity, recent research highlighted potential ecological importance cities for pollinators. Key determinants cities' ability sustain pollinators are presence green areas and connectivity between them. However, also temperature be primary pollinator activities. Here, we aimed at disentangling effects temperature, open habitat cover, distance from city centre on wild bee communities Rome (Italy). We selected 36 sites along two statistically independent gradients sampled using pan‐traps 4 months. Then, measured functional traits species, is, body size, social behaviour, nesting strategy, diet breadth. Temperature emerged main driver communities, with richer species individuals warmer temperatures. found little replacement cold warm sites. In addition, increasing temperatures, were dominated by polylectic small‐bodied species. showed highly urbanised environment, shapes irrespective other landscape metrics. warming seemed beneficial abundance richness, it might strongly homogenise selecting those make more easily adaptable.

Язык: Английский

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Importance of urban green areas’ connectivity for the conservation of pollinators

Urban Ecosystems, Год журнала: 2023, Номер 27(2), С. 417 - 426

Опубликована: Ноя. 6, 2023

Язык: Английский

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Native bee habitat restoration: key ecological considerations from recent North American literature

Frontiers in Ecology and Evolution, Год журнала: 2024, Номер 12

Опубликована: Авг. 5, 2024

Habitat loss is a primary driver of global biodiversity decline, negatively impacting many species, including native bees. One approach to counteract the consequences habitat through restoration, which includes transformation degraded or damaged habitats increase biodiversity. In this review, we survey bee restoration literature over last 14 years provide insights into how best promote diversity and abundance natural landscapes in North America. We highlight relevant questions concepts consider throughout various stages projects, categorizing them pre-, during-, post-restoration stages. emphasize importance planning species- site-specific strategies support bees, providing floral non-floral resources increasing nest site availability. Lastly, underscore significance conducting evaluations long-term monitoring following efforts. By identifying effective methods, success indicators, areas for future research, our review presents comprehensive framework that can guide land managers during urgent time restoration.

Язык: Английский

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Urban pollinator communities are structured by local-scale garden features, not landscape context

Landscape Ecology, Год журнала: 2025, Номер 40(3)

Опубликована: Фев. 22, 2025

Язык: Английский

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A survey of pollinator assemblies in two contiguous Richmond, Virginia (U.S.A.), urban green spaces

Journal of Pollination Ecology, Год журнала: 2025, Номер unknown

Опубликована: Март 29, 2025

The interactions between plants and their pollinators provide essential ecosystem services in support of the reproduction propagation flowering plants, as well nutritive for offspring. Given critical nature these activities, coupled with exponential urban development concurrent, dramatic decline worldwide, it has become increasingly important to evaluate complex specialized host plants. This includes assessing plant-pollinator within green infrastructure. Here, we surveyed floral visitor on nineteen summer-blooming plant species two contiguous Richmond, Virginia, gardens. We observed 110 distinct flower taxa, majority seen four or fewer species. most common visitors were bees, including Bombus impatiens, which was found every surveyed. Although assemblages varied categorically among species, total gardens hosted a broad range generalist specialist visitors. results this survey regional seasonal perspective space dynamics.

Язык: Английский

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Crop-specialized pollinator drives bee and floral community response to urbanization on small squash farms

Urban Ecosystems, Год журнала: 2025, Номер 28(3)

Опубликована: Май 6, 2025

Язык: Английский

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Introduced honey bees (Apis mellifera) potentially reduce fitness of cavity-nesting native bees through a male-bias sex ratio, brood mortality and reduced reproduction

Frontiers in Bee Science, Год журнала: 2025, Номер 3

Опубликована: Май 19, 2025

Introduction In Australia, as well many other regions of the world, European honey bees Apis mellifera are an introduced species and may harm native bee fauna by competing with them for food resources. Field studies have revealed negative associations between abundance, but whether this translates to fitness costs is unclear. Methods Using drilled wooden-block trap nests, we evaluated abundance associated parameters (number provisioned cells per nest, offspring number, mortality rate, sex ratio, body size) cavity-nesting over 2 years. We also conducted palynological analyses measure pollen resource overlap evaluate impacts fitness. Results discussion Greater was a male-biased ratio in progeny across years increased rate first year. Most non-significant were directions predicted from adversely impacting year, greater morphospecies fewer cells. conclusion, demonstrated that potential harmful consequences

Язык: Английский

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Solitary Bees as Vital Bioindicators: A Comprehensive Review of the Diversity, Decline, and Conservation Imperatives of the Halictidae Family

Entomological Research, Год журнала: 2025, Номер 55(6)

Опубликована: Июнь 1, 2025

ABSTRACT Pollination, a keystone ecological process sustaining most flowering plant communities, is indispensable to human survival, with over 500 cultivated species relying on insect pollinators. Solitary bees (Hymenoptera: Apoidea) are critical contributors this service, requiring specialized foraging, nesting, and habitat resources. Plant diversity strongly correlates pollinator community composition, underscoring the interdependence of these groups. Within solitary bees, family Halictidae (~4500 species) plays disproportionately significant role in global pollination networks. Halictids exhibit remarkable social organization—ranging from communal, semi‐social, primitively eusocial behaviors—shaped by floral resource availability, geographic distribution, climatic factors. The subfamily Halictinae represents group's greatest diversity, tribe Halictini comprising 53.3% described species. Key genera such as Lasioglossum (e.g., marginatum , leucozonium ) dominate temperate ecosystems. However, population declines have severely disrupted services across wild systems, exacerbating concerns biodiversity loss biomass reduction. These threaten foundational ecosystem services, necessitating urgent research refine estimates, identify conservation priorities, implement evidence‐based protective policies. This review highlights need for standardized methodologies accurately assess bee proposes targeted strategies mitigate challenges other taxa.

Язык: Английский

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Urban development reduces bee abundance and diversity

Urban Ecosystems, Год журнала: 2023, Номер 26(6), С. 1535 - 1544

Опубликована: Июль 10, 2023

Язык: Английский

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Metabarcoding of trap nests reveals differential impact of urbanization on cavity‐nesting bee and wasp communities

Molecular Ecology, Год журнала: 2022, Номер 32(23), С. 6449 - 6460

Опубликована: Дек. 8, 2022

Urbanization is affecting arthropod communities worldwide, for example by changing the availability of food resources. However, strength and direction a community's response species-specific depends on species' trophic level. Here, we investigated interacting species at different levels in nests cavity-nesting bees wasps along two urbanization gradients four German cities using trap nests. We analysed bee wasp diversity their interaction partners metabarcoding DNA pollen preyed arthropods found that richness increased with increasing distance from city centres sites characterized high percentage impervious developed surface, while pollinators was unaffected urbanization. In contrast, wasps, but not prey, highest low community structure prey changed both local regional scales. Throughout study area, consisted specialists, were generalists. Our results suggest Hymenoptera resources are negatively affected to understand distribution patterns both, urban settings other factors besides should be considered.

Язык: Английский

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