| Full text | |
| Author(s): |
Bosenbecker, Camila
;
Anselmo, Pedro Amaral
;
Fonseca, Teresa Mol
;
Pena, Joao Carlos
;
Oliveira, Paulo Eugenio
;
Maruyama, Pietro Kiyoshi
Total Authors: 6
|
| Document type: | Journal article |
| Source: | URBAN FORESTRY & URBAN GREENING; v. 101, p. 9-pg., 2024-09-05. |
| Abstract | |
Human activities, particularly urbanization, profoundly impact ecosystems often resulting in biotic homogenization. Whether or not urban landscapes can sustain diverse pollinator and plant communities is an important question to be addressed. Here, we investigated the influence of urbanization on plant-hummingbird interaction networks in a large tropical city, Belo Horizonte, Brazil. We recorded 13198 legitimate interactions between seven hummingbirds and 57 plant species across 12 local networks. Urban landscapes exhibited predominantly generalized networks, maintaining this pattern across varying vegetation cover and floral resource abundance. Although some functionally specialized hummingbirds with long bills were recorded performing more specialized interactions, urban environments did not generally support specialized networks. Nevertheless, network specialization did increase with the proportion of native nectar plants, emphasizing their importance for maintaining some specialized interactions. Furthermore, we observed a positive effect of plant richness, but not of flower abundance, on hummingbird abundance, indicating that it is not only the amount of flowers, but the diversity of floral resources that may be a key factor in maintaining hummingbirds. Therefore, promoting a diverse assemblage of native plants in urban green areas is crucial for sustainable pollinator communities. Our study highlights that while a biodiverse urban landscape will require careful urban vegetation planning considering both floral resource diversity and availability, vegetation cover per se may not be sufficient to mitigate the negative impacts of urbanization. Maintaining a diverse vegetation with different life forms, flowering phenology, and especially of native plants across the urban landscape is needed to create welcoming spaces for pollinators. (AU) | |
| FAPESP's process: | 18/00107-3 - A continental scale assessment of predation risk on insect prey in urban landscapes: a collaborative research network |
| Grantee: | João Carlos de Castro Pena |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 21/10195-0 - Contribution of payment for ecosystem services on multi-dimensions within Atlantic Forest |
| Grantee: | Milton Cezar Ribeiro |
| Support Opportunities: | Research Projects - Thematic Grants |