Nesting Habits of Cavity Nesting Bees and Wasps in Portland, Oregon DOI Open Access

Stefanie Steele

Published: July 21, 2021

Native bees are threatened by habitat loss through urbanization, however, there is increasing interest in creating bee nesting urban areas. Few studies have determined what species present the region, or examined role of nest height cavity size attracting approximate one-third native that cavities. To determine were present, and whether they showed preferences for at a certain width, we set up artificial wooden blocks across fourteen locations greater Portland, OR area. Wooden posts erected with three heights (0.5, 1.5, 2.3 m), to accommodate diversity species, widths 3.0, 5.0, 6.0, 8.0, 10.0 mm provided. The nests retrieved end season wasps reared lab. We found occupied approximately 15% total available nests, but when combined, occupancy rates reached 30%. Sixteen used blocks, including six building Megachilidae genera, two cleptoparasitoid Colletidae genus. Bees built greatest number (60%) 5.0 widths. Additionally, accommodated (eight one species). Nest also common nearly 17% At least twelve four families Wasps most often 3.0 wide cavities (55% their nests). In addition wasp taxa, five fly parasitized nests. Overall, all some although 1.5 m used. Human constructed provide an excellent opportunity learn more about various hymenopterans use them. descriptions photos included be as pictural guide Portland Novel provided Megachile fidelis new record introduced Pseudoanthidium nanum angelarum was documented host parasitoid fly, Anthrax irroratus. Nesting preference data will better inform residents how best bees, solitary similar sites. Although this not comprehensive study now much understanding habits promote conservation efforts.

Language: Английский

Exotic garden plants partly substitute for native plants as resources for pollinators when native plants become seasonally scarce DOI Creative Commons
Michael Staab, Maria Helena Pereira-Peixoto, Alexandra‐Maria Klein

et al.

Oecologia, Journal Year: 2020, Volume and Issue: 194(3), P. 465 - 480

Published: Oct. 20, 2020

Urban green spaces such as gardens often consist of native and exotic plant species, which provide pollen nectar for flower-visiting insects. Although some plants are readily visited by pollinators, it is unknown if at time the season garden may supplement or substitute flower resources provided plants. To investigate seasonal changes in availability from vs. affect visits, diversity particularly plant-pollinator interaction networks, we studied insects over a whole growing 20 urban residential Germany. Over course season, visits to decreased, proportion exotics increased, flower-visitor species richness decreased. Yet, decline was slowed with relatively higher flowering This compensation more positively linked than cover. Plant-pollinator networks were moderately specialized. Interactions complex high summer, but diversity, linkage density, specialisation not influenced species. Thus, later when few flowered, partly substituted without apparent influence on network structure. Late-flowering support pollinator cities. If appropriately managed, risk naturalisation minimized, late-flowering floral pollinators scarce.

Language: Английский

Citations

83
Biodiversity in residential gardens: a review of the evidence base DOI Creative Commons
Richard J. Delahay, David Μ. Sherman,

B. Soyalan

et al.

Biodiversity and Conservation, Journal Year: 2023, Volume and Issue: 32(13), P. 4155 - 4179

Published: Aug. 19, 2023

Abstract Residential gardens are a principal component of urban green infrastructure throughout the world and their potential positive contributions to biodiversity increasingly recognised. But characteristics reflect needs, values interests individual households. The present review summarises evidence from studies garden published in scientific literature, describes major themes identifies important knowledge gaps. A search Web Science database identified 408 articles on residential (1981–2022), with numbers increasing over time strong bias towards Europe (32.1%) North America (23.8%). Plants invertebrates were most frequently studied, species diversity was often correlated size habitat complexity. Botanic composition vegetation cover positively associated abundance fauna. Non-native plants contributed substantially plant some indicated benefits other linked functional attributes. Intensive management including frequent lawn mowing, fertiliser pesticide application, more formal, ‘neater’ appearance reduced biodiversity. However, results varied amongst studies, for example relation impacts mowing frequency diversity. There general paucity experimental different regimes few replicated tests recommended ‘wildlife-friendly practices’. Several importance connectivity infra-structure dispersal ecosystem functioning. Emerging threats include replacement by development, conversion hard surfaces declining plot sizes. Managing these challenges maximising value requires greater engagement policymakers planners, partnerships between public bodies private households co-ordinate local initiatives.

Language: Английский

Citations

26
Bee hotels host a high abundance of exotic bees in an urban context DOI Creative Commons
Benoît Geslin, Sophie Gachet, Magali Deschamps-Cottin

et al.

Acta Oecologica, Journal Year: 2020, Volume and Issue: 105, P. 103556 - 103556

Published: May 1, 2020

Language: Английский

Citations

57
Citizen science initiatives increase pollinator activity in private gardens and green spaces DOI Creative Commons
Anna Persson, Veronica Hederström,

Iris Ljungkvist

et al.

Frontiers in Sustainable Cities, Journal Year: 2023, Volume and Issue: 4

Published: Jan. 11, 2023

Wild insect pollinators are essential to cultivated and natural ecosystems globally. Today, many pollinator species declining. One reason is a general lack of flowering habitats at landscape scales. However, urban areas, including private gardens, may provide flowers, constitute beneficial for pollinators. Here, we evaluate the ecological outcomes citizen science campaign run by Swedish Society Nature Conservation (SSNC) (called “Operation: Save bees”), encouraging citizens incorporate interventions wild (garden meadows, flower plantings, bee hotels) in their gardens. Data on observations plants were collected through online questionnaires end growing season. In total, received 3,758 responses three interventions. We found that participants more likely observe (as opposed few or none) rich garden larger older plantings. The surrounding environment also affected abundance: fewer observed plantings dense areas. Direct counts during 10-min surveys correlated strongly simplistic abundance assessment (none, few, insects seen over summer season). Bee hotel occupancy was positively related local availability age. Smaller nest holes (<10 mm) occupied than (11–15 hotels rural gardens natural/semi-natural sites those This study demonstrates flower-rich integral habitat programs can tool implementing evaluating conservation practices. longer lasting commitment resulting preferable should be encouraged future campaigns.

Language: Английский

Citations

11
Nesting material, phenology and landscape complexity influence nesting success and parasite infestation of a trap nesting bee DOI
Maxime Eeraerts, Rik Clymans,

Vincent Van Kerckvoorde

et al.

Agriculture Ecosystems & Environment, Journal Year: 2022, Volume and Issue: 332, P. 107951 - 107951

Published: March 15, 2022

Language: Английский

Citations

16
How effective are artificial nests in attracting bees? A review DOI Creative Commons
Ehsan Rahimi, Shahindokht Barghjelveh, Pinliang Dong

et al.

Journal of Ecology and Environment, Journal Year: 2021, Volume and Issue: 45(1)

Published: Sept. 10, 2021

Abstract Background Recent declines in bee populations, along with increasing demand for pollination services urban, agricultural, and natural environments, have led to strategies attract wild bees these areas. One of is installing artificial nests adjacent urban gardens agricultural farms. Bee hotels nest boxes are among the used by gardeners farmers pollinators. In this paper, we reviewed 50 studies that reported efficiency attracting bees. We considered maximum occupation rate (percentage) as main index evaluate nests. Results The was higher farms (averaged 44.1%) than forests 30.3%) 38.3%) environments. case boxes, most efficiencies less 20%, an 16% 5.5% on average forest environments respectively. However, our meta-analysis results showed there no significant relationship between their installation place. Regression analysis also structural features (length diameter) (volume entrance size) did not affect Conclusion Our data strategy pollinators successful only concerning hotels, use has been very successful.

Language: Английский

Citations

20
Checking in at bee hotels: trap-nesting occupancy and fitness of cavity-nesting bees in an urbanised biodiversity hotspot DOI Creative Commons
Kit Prendergast

Urban Ecosystems, Journal Year: 2023, Volume and Issue: 26(5), P. 1381 - 1395

Published: June 7, 2023

Abstract With urbanisation leading to loss of nesting resources, and increasing public interest in helping bees, bee hotels (trap-nests) are becoming popularised. However, their success is relatively understudied. The influence habitat type determining occupancy emergence also poorly known. Over two years across 7 bushland remnant residential garden sites, trap-nests were installed completed nests collected monthly over spring-summer. Bees appeared take a month find the trap-nests, irrespective they installed. A small percentage (13% 6% years) tubes occupied, but this was within range other trap-nesting studies. Smaller 4 mm diameter had higher rate than 10 tubes. An impressive number − 24 species – occupied trap-nests. Representation however dominated by five species. composition (species relative abundances) cavity-nesting bees differed greatly between those using compared with observed field. Bushland remnants tended have more male body size emerged larger habitat. Unexpectedly native total flower diversity reduced hotel occupancy, whereas parameters positively fitness. Overall installing can provide additional resources for urbanised areas, providing high proportions flora vicinity should enhance fitness them.

Language: Английский

Citations

7
Use of nest bundles to monitor agrochemical exposure and effects among cavity nesting pollinators DOI
Eric M. Peterson, Kelsey N. Thompson, Katherine R. Shaw

et al.

Environmental Pollution, Journal Year: 2021, Volume and Issue: 286, P. 117142 - 117142

Published: May 3, 2021

Language: Английский

Citations

17
Effect of landscape complexity, nesting substrate, and nest orientation on cavity-nesting solitary bees in southern Punjab, Pakistan DOI

Danyal Haider Khan,

Mudssar Ali, Fawad Khan

et al.

International Journal of Tropical Insect Science, Journal Year: 2024, Volume and Issue: 44(1), P. 339 - 349

Published: Jan. 29, 2024

Language: Английский

Citations

2
Tree traits are a stronger predictor of bee traits and species richness than taxonomic diversity DOI Creative Commons

Adrian González‐Chaves,

Rafael Cabral Borges, Caroline Oliveira Andrino

et al.

Functional Ecology, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 12, 2024

Abstract Functional traits help to understand biological diversity and the mechanism by which ecological communities are structured how they respond environment. For example, high tree species within tropical forests can be grouped into a few functional attributes, wood density, size dependence on animal pollination or seed dispersal. However, little is known about these influence taxonomic in forests. We carried out vegetation census six plots (20 × 100 m) National Forest of Carajás (Amazon biome) identify forest canopy their traits. Within same plot, we also applied three bee sampling methods (entomological nets, honey traps scent traps). By characterizing trees bees, were able predict better than with alone via combinations like size, pollinators extinction risk. found that larger low density negatively associated small, eusocial cavity nesting bees. The richness abundance risk was positively medium‐sized solitary dominance community pollinator‐dependent (average diameter basal area) above‐ground Our findings suggest composition limits availability resources for specific groups Moreover, presence higher (conservation value) greater variety only metric overall richness. As expected, shed light might drive In addition, there appears complementarity terms conservation value carbon stock potential, as areas habour those diversity. Finally, our study contribute restoration plant—pollinator providing an understanding contributes biodiversity maintenance. Read free Plain Language Summary this article Journal blog.

Language: Английский

Citations

2