Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
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Critical findings
136 results(5 / 6)
SOS Polinizadores: un proyecto educativo sobre insectos polinizadores
2018Cindy Melissa Torres Peña · Dialnet (Universidad de la Rioja) · Spain
"SOS Polinizadores" is an educational project aimed at fostering knowledge and study of pollinating insects in ecosystems among students, teachers, and the broader educational community, including their impact on our lives and current threats. It also seeks to raise awareness about environmental problems and the sustainability of nearby ecosystems like parks, gardens, and urban and peri-urban vegetable gardens. The project was carried out in eight educational centers in Madrid in Spring 2017, with a guide provided for future implementation in other centers.
Food educationBiodiversityPollinatorsCommunityThe city as a refuge for insect pollinators
2017Hall D.M., Camilo G.R., Tonietto R.K., Ollerton J., Ahrné K., Arduser M., Ascher J.S., Baldock K.C.R., Fowler R., Frankie G., Goulson D., Gunnarsson B., Hanley M.E., Jackson J.I., Langellotto G., Lowenstein D., Minor E.S., Philpott S.M., Potts S.G., Sirohi M.H., Spevak E.M., Stone G.N., Threlfall C.G. · Conservation Biology, 31(1):24-29 · Global
A review by an international team arguing that, as pollinators decline globally under agricultural intensification and pesticide use, cities can serve as important refuges for insect pollinators including native bees. It highlights the conservation value of designing and managing urban green spaces such as gardens and community plots for pollinators, framing citizen urban agriculture as a contributor to biodiversity conservation.
PollinatorsBiodiversityCommunityPolicyUrban agriculture
2017Brenda B. Lin, Monika Egerer · · Global
Urban agriculture, the production of food and livestock in urban areas, is a key component of urban green infrastructure, supported for food security and biodiversity enhancement. While habitat management in urban agriculture aids local biodiversity and food production, the effect of native plants on beneficial insects and ecosystem function is debatable. Declines in urban bees are likely linked to increased impervious cover, which reduces habitat and restricts bee movement.
BiodiversityPollinatorsCommunityFood sovereignty & justiceUrban arthropods respond variably to changes in landscape context and spatial scale
2017Monika Egerer, Courtney Arel, Michelle D. Otoshi, Robyn D. Quistberg, Peter Bichier, Stacy M. Philpott · Journal of Urban Ecology · United States (California)
This three-year study in 19 urban community gardens on the California central coast examined how urban landscape intensification and diversity influence the abundance and richness of five arthropod groups (ants, bees, ladybeetles, parasitoids, spiders) across six spatial scales (200 m to 5 km). All arthropod groups were influenced by landscape factors, but this influence varied with spatial scale and local habitat features, likely due to arthropod community interactions and life history strategies.
CommunityBiodiversityPollinators도시양봉으로 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 failureBiodiversityPollinatorsCommunityPolicyEconomicsUrbanization alters communities of flying arthropods in parks and gardens of a medium-sized city
2017Edward Lagucki, Justin Burdine, Kevin E. McCluney · PeerJ · United States (Toledo, Ohio)
This study investigated associations between urbanization and flying arthropod communities in 30 gardens and parks in Toledo, Ohio, during July and August 2016, collecting 2,369 individuals across nine orders using elevated pan traps. Flying arthropod community composition was associated with percent impervious surface and canopy cover. Overall abundance was negatively associated with impervious surface and positively with distance to city center, with specific taxa showing similar responses, indicating urbanization reduces taxa important for urban agriculture.
BiodiversityPollinatorsClimate changeTaxonomic and functional trait diversity of wild bees in different urban settings
2017Étienne Normandin, Nicolas J. Vereecken, Christopher M. Buddle, Valérie Fournier · PeerJ · Canada
This study collected 32,237 wild bee specimens (200 species, 6 families) from 46 sites in Montreal and Quebec City in 2012 and 2013, across cemeteries, community gardens, and urban parks. It demonstrated that cities are home to diverse communities of wild bees, which in turn affect bee community structure and dynamics. Community gardens specifically harbored high levels of functional trait diversity, suggesting a substantial contribution to urban pollination services.
BiodiversityPollinatorsCommunityUse of human-made nesting structures by wild bees in an urban environment
2016Fortel L., Henry M., Guilbaud L., Mouret H., Vaissiere B. E. · Journal of Insect Conservation · Lyon, France
Surveys use of human-made nesting structures (trap nests / bee hotels) by cavity-nesting wild bees in an urban setting, examining how artificial nesting aids may supplement scarce urban nesting resources.
PollinatorsBiodiversityLandscape and Local Correlates of Bee Abundance and Species Richness in Urban Gardens
2016Robyn D. Quistberg, Peter Bichier, Stacy M. Philpott · Environmental Entomology · United States (California)
This study investigated bee abundance and species richness in 19 urban community gardens on the California central coast using aerial nets and pan traps. Researchers found 55 bee species and identified that local factors, such as garden size, floral abundance, mulch cover, bare ground, and grass, were generally more important correlates than landscape factors. Medium bees were less abundant in areas with more medium-intensity developed land within 2 km.
BiodiversityPollinatorsCommunityJardin partagé des Piedalloues Auxerre
2016Petites ruches · · France (Auxerre)
The shared garden of the Maison de Quartier des Piedalloues in Auxerre, France, features lawns intentionally left high to attract butterflies such as the 'demi-deuil', which pollinate knautia flowers. Residents have also participated in creating palisades or 'branch walls' using split acacia stakes within the garden.
CommunityBiodiversityPollinatorsThe 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 changeWild Bees in the City: Reimagining Urban Spaces for Pollinator Health
2016Andrea Burr · Consilience · United States (St. Louis, Missouri)
This interdisciplinary pilot study in St. Louis, Missouri, USA (2013-2015) investigated relationships between pollinator health and urban land-uses. Wild bees were sampled weekly at urban farms, community gardens, and prairie pockets, and ethnographic interviews were conducted with 30 decision-makers in summer 2015. Informants described bees' role in crop yield and reported planting to attract pollinators, suggesting the city is viable for pollinator habitat.
BiodiversityPollinatorsCommunityUrban–rural linkageLandscape and Local Habitat Correlates of Lady Beetle Abundance and Species Richness in Urban Agriculture
2016Monika Egerer, Peter Bichier, Stacy M. Philpott · Annals of the Entomological Society of America · Global
This study identified landscape and local habitat factors influencing lady beetle abundance and species richness in urban community gardens. Assessing 19 gardens over two years, it found that the amount of natural area surrounding gardens at 3 km was the strongest correlate of abundance and species richness. Gardens embedded in more urban landscapes had higher lady beetle abundance and richness, suggesting that urban landscape quality and local habitat management may interact to shape lady beetle communities within gardens.
BiodiversityPollinatorsCommunitySubstantial Mortality of Cabbage Looper (Lepidoptera: Noctuidae) From Predators in Urban Agriculture Is not Influenced by Scale of Production or Variation in Local and Landscape-Level Factors
2016David M. Lowenstein, Maryam Gharehaghaji, David H. Wise · Environmental Entomology · United States
A study at 28 urban food-production sites in the Midwestern United States measured the removal of sentinel eggs and larvae of the cabbage looper (Trichoplusia ni) by predators over a 3-day period. Predators removed 50% of eggs and 25% of larvae, with mortality rates not predicted by landscape factors and similar across residential gardens, community gardens, and farms. Laboratory assays confirmed that lady beetles, spiders, and pirate bugs consumed eggs and larvae at high rates.
BiodiversityPollinatorsDiversity of wild bees supports pollination services in an urbanized landscape
2015Lowenstein D.M., Matteson K.C., Minor E.S. · Oecologia, 179(3):811-821 · United States
A study measuring wild bee diversity and cucumber pollination (a pollination service) across urban Chicago. Sites with more bee species had better pollination, and even densely populated residential areas supported high bee richness. It demonstrates that growing diverse flowers in urban gardens sustains pollinators and directly benefits urban agricultural yields.
PollinatorsBiodiversityFood educationCommunityTemporal dynamics influenced by global change: bee community phenology in urban, agricultural, and natural landscapes
2015Misha Leong, Lauren C. Ponisio, Claire Kremen, Robbin W. Thorp, George Roderick · Global Change Biology · Global
This study investigated the impact of human-altered landscapes on the seasonal patterns of bee communities, using three years of data on the spatio-temporal distributions of 91 bee species in urban, agricultural, and natural landscapes. Seasonal patterns of abundance and species richness in human-altered landscapes varied significantly less compared to natural habitats, where floral resources are relatively scarce in the dry summer months. These findings demonstrate that anthropogenic environmental changes in urban and agricultural systems, mediated through changes in plant resources and water inputs, can alter the temporal dynamics of bee pollinators.
PollinatorsBiodiversityClimate changeHabitat connectivity shapes urban arthropod communities: the key role of green roofs
2014Braaker S., Ghazoul J., Obrist M.K., Moretti M. · Ecology, 95(4):1010-1021 · Switzerland (Zurich)
By sampling carabid beetles, spiders, weevils and bees on green roofs and ground-level green spaces in Zurich, this study compares community composition and tests the relative importance of local environment, microclimate and connectivity. Connectivity among roofs and to ground habitats emerged as a key driver of species composition, demonstrating that green roofs can act as stepping stones that support biodiversity in the surrounding urban ecosystem — a landmark case for connectivity-aware green-roof placement in city design.
BiodiversityPollinatorsUrban 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 linkageThe Value of Urban Vacant Land to Support Arthropod Biodiversity and Ecosystem Services
2013Mary M. Gardiner, Caitlin E. Burkman, Scott P. Prajzner · Environmental Entomology · United States
This article discusses the ecological value of urban vacant land in the United States, particularly its role in supporting arthropod biodiversity and ecosystem services. It notes that vacant lands can offer opportunities to preserve declining species and restore ecosystem functions. The article emphasizes the need for quantifying the current ecological value of vacant land and assessing how changes in its ecosystem management affect biodiversity and ecosystem processes, with a specific focus on arthropods.
BiodiversityPollinatorsOrganic cycleUrban–rural linkageThe Effects of Urban Land Use on Wasps: (Hymenoptera: Apocrita)
2013Klaire Elise Freeman · OhioLink ETD Center (Ohio Library and Information Network) · United States (Cleveland)
A study in Cleveland, Ohio, examined the role of wasps in urban gardens and vacant lots, collecting 13,339 arthropods, including 5,165 wasps across 24 families and 369 morphospecies. The findings showed higher wasp abundance, species richness, and number of families in vacant lots compared to urban gardens. Specifically, vacant lots had 2,703 individuals and 288 morphospecies, while gardens had 2,462 individuals and 231 morphospecies.
BiodiversityPollinatorsCommunityEvaluating Community Gardens as Habitat for an Urban Butterfly
2012Kevin C. Matteson, Gail Langellotto · Cities and the Environment · United States (New York City)
This study used mark-recapture and translocation experiments to assess the residency and movement of the urban butterfly, Pieris rapae, within and among community gardens in New York City. While most marked butterflies used gardens transiently, recruitment and residence time were higher in larger gardens and those with more flowers. The study demonstrated the butterfly's ability to move through developed landscapes and locate floral resources.
CommunityBiodiversityPollinators도시농업 활성화와 곤충
2012서명훈, 이원석, 전명희, 김성기 · · South Korea
In South Korea, urban agriculture is being revitalized with the enactment of urban agriculture-related laws in 2011 and active promotion by local governments. The total urban agriculture area in Seoul and Gyeonggi regions is 251.6 ha, and urban gardens with diverse crops exhibit biodiversity, allowing for relatively flexible insect life cycles. However, challenges include unauthorized biological and chemical pest control due to multiple people managing small areas, and the absence of winter crops due to limited usage periods. Environmentally friendly insect management, utilizing natural enemies, traps, and biodiversity, is necessary for urban gardens.
CommunityPolicyBiodiversityPollinatorsPollination by Native Bee Communities in Berkeley, California
2012Kevin F. Welzel · Berkeley Scientific Journal · United States (California)
This study examined native bee pollination at two urban agricultural sites in Berkeley, California: the Oxford Tract and Berkeley Youth Alternative garden. It observed squash, tomato, strawberry, and sunflower plants, collecting data on distance from natural habitat, native bee pollinator diversity, and visitation rates. The study found mixed results for genus richness and evenness, and a t-test indicated no significant difference in visitation rates for each plant type between the two sites.
BiodiversityPollinatorsCommunityCOMPOSICIÓN Y RIQUEZA DE INSECTOS Y ARAÑAS ASOCIADOS A PLANTAS FLORECIDAS EN SISTEMAS AGRÍCOLAS URBANOS
2011Yaril Matienzo Brito, Marlene M. Veitía Rubio, Giraldo Alayón García · Fitosanidad · Cuba
This study identified the species that most frequently visit flowers of different plant species in urban agricultural systems, using weekly simple random sampling in different production systems of Havana province during 2007-2009. Functional groups with higher species richness associated with the flowers were Coleoptera, Araneae, and Hymenoptera, in that order. Cycloneda sanguinea limbifer Casey and Apis mellifera L. were arthropods that visited a greater number of flowering plant species.
BiodiversityPollinatorsDistribution Patterns of Wild Flowers and Their Use in Urban Gardening in Tianjin City
2011Hongyuan Li · Bulletin of Soil and Water Conservation · China (Tianjin)
An investigation of wild flowers in urban areas of Tianjin City was conducted from 2005 to 2010. The study examined the ecological habits, life forms, and distribution of each species, identifying six distinct distribution patterns: single, linear, scattered, assembled, radial, and climbing. Following an analysis of these patterns' characteristics, the potential use of these wild flowers in urban gardening was discussed.
BiodiversityPollinatorsDIY