Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
Theme
Critical findings
6 results
Low resource availability drives feeding niche partitioning between wild bees and honeybees in a European city
2022Joan Casanelles‐Abella, Simone Fontana, Bertrand Fournier, David Frey, Marco Moretti · Ecological Applications · Switzerland (Zurich)
This study in 23 urban gardens in Zurich, Switzerland, examined feeding niche partitioning between wild bees and honeybees. Researchers found that feeding niche partitioning increased with wild bee species richness and in sites with lower landscape-scale resource availability, which also had lower honeybee abundances. However, beekeeping intensity at local and landscape scales did not directly influence community feeding niche partitioning or wild bee species richness, suggesting direct competition for resources was not a main driver for the wild bee community.
Environmental trade-offsBiodiversityPollinatorsCommunityFirst records of the introduced African carder bee, Pseudoanthidium (Immanthidium) repetitum (Hymenoptera : Megachilidae), in Western Australia
2020Kit Prendergast · Pacific Conservation Biology · Australia
The African carder bee, Pseudoanthidium (Immanthidium) repetitum, first recorded in Queensland in 2000, has now been found in Western Australia, marking a significant distribution expansion. Three confirmed and one unconfirmed localities were identified in the Mandurah region, with abundant female specimens observed in one garden. The presence of this introduced species necessitates vigilance due to known negative impacts on native fauna and flora.
Environmental trade-offsBiodiversityPollinatorsCommunity도시양봉으로 양봉산업의 발전가능성 확보 방안
2017박진 · 한국양봉학회 학술대회 자료집 · Global
This report examines the global rise of urban beekeeping, noting its diverse approaches across countries like the UK, Japan, and Denmark. While South Korea has seen an increase in urban beekeeping since 2012, with government support initiated in 2016, the sector faces significant challenges. Urban beekeeping is still largely viewed as a derivative of conventional beekeeping, and a lack of ordinances or legal frameworks hinders its widespread adoption and recognition of its environmental, social, and economic value.
Governance failureBiodiversityPollinatorsCommunityPolicyEconomicsThe Bees among Us: Modelling Occupancy of Solitary Bees
2016J. Scott MacIvor, Laurence Packer · PLoS ONE · Global
This study modeled the occupancy probability of six solitary bee species using nest boxes set along an urbanization gradient over three consecutive years. Native M. pugnata showed decreased occupancy with increasing building footprint, and a similar but not significant pattern was found for native O. pumila. Conversely, introduced M. rotundata and M. centuncularis, along with native M. campanulae, exhibited increased occupancy with rising urbanization.
Environmental trade-offsBiodiversityPollinatorsClimate changeUrban Land Use Decouples Plant-Herbivore-Parasitoid Interactions at Multiple Spatial Scales
2014Amanda E. Nelson, Andrew A. Forbes · PLoS ONE · Global
This study sampled two plant-herbivore-parasitoid systems across 250 sites in a 360 km2 urban/agricultural landscape to investigate the impact of human development on trophic interactions. It found that herbivorous insect densities were decoupled from host tree densities in urban landcover types at several spatial scales. Furthermore, a parasitoid species was absent from all urban/suburban landcover in one system, even where its herbivore host was common, indicating that human land use patterns limit specialist insect distributions due to dispersal constraints.
Environmental trade-offsBiodiversityPollinatorsUrban–rural linkageBumble Bees (Bombus spp) along a Gradient of Increasing Urbanization
2009Karin Ahrné, Jan Bengtsson, Thomas Elmqvist · PLoS ONE · Sweden (Stockholm)
This study investigated bumble bees in allotment gardens along an urbanization gradient from inner Stockholm to rural areas. Findings showed that bumble bee diversity decreased with increasing urbanization, from approximately eight species in rural areas to five to six species in urban allotment gardens. Higher variability in the abundance of certain species in the most urban areas suggested a potentially weaker reliability of the pollination ecosystem service in areas strongly influenced by human activity.
Environmental trade-offsBiodiversityPollinatorsCommunityPeri-urban agriculture