Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
Theme
Critical findings
65 results(1 / 3)
Trace metal extractability and bioaccessibility in urban soils
2026María Roo, Cecilia Herbón, Juan Pedro Martín‐Sanz, María Teresa Barral, Remigio Paradelo Núñez · Journal of Soils and Sediments · Spain (Santiago de Compostela)
This study analyzed the chemical extractability and bioaccessibility of five trace metals (Pb, Cu, Zn, Ni, Cr) in 55 urban soils from Santiago de Compostela, Spain, across various land uses. The availability of trace metals in these soils was found to be very low. Plant-available and bioaccessible Cu and Zn were higher in urban garden soils compared to other uses, supporting hypotheses that Cu, Pb, and Zn originate from anthropogenic pollution.
Contamination & food safetyHealthOrganic cycleCensored-Data-Aware Screening of Hazardous Metal(loid)s in Wild Mushrooms from Urban and Peri-Urban Green Spaces: Multielement Fingerprints and Adult Exposure Assessment
2026Antonio Peña‐Fernández, M. Carmen Lobo, María de los Ángeles Peña, Guillermo Torrado Durán, Mark D. Evans, Tiziana Sgamma, Tomás Cámara Pastor, Gurminderjeet S. Jagdev · Journal of Xenobiotics · United Kingdom
This study evaluated hazardous metal(loid)s in 121 wild mushroom fruiting-body units collected from urban and peri-urban green spaces in Leicester/Leicestershire, UK. Copper, manganese, and zinc were detected in all units, while cadmium and lead were found in 117/121 and 106/121 units respectively, indicating the widespread presence of these contaminants. Taxon-level profiles showed marked heterogeneity, and under a 300 g fresh-weight week−1 consumption scenario, cadmium represented 47.3% of the EFSA tolerable weekly intake in the pooled edible population and 50.9% in Agaricus bitorquis.
Contamination & food safetyHealthGrowing food and radical hope in Glasgow: A review of The Practice of Collective Escape
2026Rose Jennings · Journal of Agriculture Food Systems and Community Development · United Kingdom (Glasgow)
Helen Traill's book, "The Practice of Collective Escape," presents ethnographic work over six years in Glasgow, Scotland, following two community growing sites. The book critically examines urban agriculture projects as "Petri dishes for individual and community transformation," exploring concepts of inclusion, individual escape, and political activism, and highlighting social complexities and issues of inclusion and exclusion.
Equity & displacementCommunityPolicyHealthFood sovereignty & justiceAsyl, Gemüse und Nachhaltigkeit: Urban Gardening in einer Unterkunft für geflüchtete Menschen
2025Juliane Forßmann, Simon Goebel · Zeitschrift für Flüchtlingsforschung · Germany
An urban gardening project in a residential facility for up to 230 refugees in Germany aims to counteract precarious living conditions. While the garden offers a low-threshold space for knowledge exchange on resource-saving cultivation, biodiversity, and health promotion, this paper also reflects on the project's limits.
Limited or null effectCommunityWelfareHealthBiodiversityFood educationClimate changeInvestigation of inorganic nutrients and pollutants in private gardens in central Germany using citizen science
2025Christoph Koch, Maria da Glória Arrais Peter · Environmental Challenges · Germany
This citizen science study analyzed inorganic pollutants in private garden soils in central Germany, including front and backyards. Elevated levels of lead and copper were found in one-third of the samples, and zinc in two-thirds. Chromium and nickel concentrations were also elevated in a quarter of the samples, with some readily available substances exceeding limit values.
Contamination & food safetyCommunityHealthBuilding evidence regarding nature-based solutions indicators and their implications for policy – the case of air quality
2025Corina Başnou, Geovana Mercado, Åsa Ode Sang, Thomas B. Randrup, Verónica Fabio, Adrián Cabezas, Arnau Lluch, Marc Montlleó, Juan Miguel Kanai, Riccardo Saraco, Olívia Bina, Tom Wild · Nature-Based Solutions · Europe
An overview and guidance for air pollution indicators in nature-based solutions (NBS) for urban green planning and public health were provided, using three case studies in Europe and Latin America. The study noted that approaches including multidimensional indicators in research, planning, and policies are limited, and national standards for some air pollutants are missing with little evidence for health effect thresholds. Findings also indicated that knowledge of pollutant uptake in edible plants can suggest potential human exposure risks.
Contamination & food safetyHealthPolicyClimate changeHow do Spanish consumers perceive different lettuce cultivation systems? Insights from explicit and implicit methods
2025Juan Diego Torres, Sara R. Jaeger, Patricia Puerta, Amparo Tárrega · Applied Food Research · Spain
This study investigated Spanish consumers' perceptions of five lettuce cultivation systems using explicit and implicit methods with 105 participants. Local/small agriculture was most favorably regarded, while urban community gardens were perceived as less safe for lettuce production. High-tech greenhouses were considered safer but less sustainable, and vertical indoor farming elicited a surprise reaction due to low familiarity.
Limited or null effectCommunityHealthEconomicsQuality of Constructed Technogenic Soils in Urban Gardens Located on a Reclaimed Clay Pit
2025Dariusz Gruszka, Katarzyna Szopka, Cezary Kabała · Land · Poland (Wroclaw)
This study in Wroclaw, Poland, investigated the quality of constructed technogenic soils in urban gardens located on a reclaimed clay pit. Despite beneficial physicochemical properties and high fertility in the topsoil layers, the soils were seriously contaminated with trace elements, including zinc (up to 1700 mg kg−1), lead (920 mg kg−1), copper (740 mg kg−1), cadmium (5.1 mg kg−1), mercury (7.4 mg kg−1), and arsenic (5.1 mg kg−1). This contamination, likely from industrial and urban waste used for mine infilling, compromises soil quality and poses potential health and ecological risks.
Contamination & food safetyHealthPilotstudie zu urbanem Gärtnern: Schadstoffgehalte in Nahrungspflanzen in Straßennähe/Pilot study on urban gardening: Pollutant levels in food plants near roads
2025Katja Hombrecher · Gefahrstoffe Reinhaltung der Luft · Germany
A pilot study in Germany investigated the impact of road traffic emissions on food plants grown near roads. Bioindicators like kale, chard, Lollo Rosso, and lettuce were exposed for four weeks at four roadside locations and compared to plants in a garden away from roads. While pollutant levels generally did not exceed background or EU maximum limits, significant traffic-related inputs of PAK 4, antimony, aluminum, chromium, and vanadium, and lesser inputs of copper, iron, and lead were detected compared to the control. The findings indicate a potential contamination risk for certain vegetable plants from road traffic.
Contamination & food safetyHealthUrban–rural linkageMotivations and barriers in Huddersfield’s community gardens: exploring experiential social capital and community resilience
2025Sara Mahdizadeh, Yun Gao · Local Environment · United Kingdom
This qualitative study, based on 16 semi-structured interviews, examined motivations and barriers to participation in community gardens in Huddersfield, UK. Key motivations included social interaction, mental well-being, and skill development. Reported barriers were declining volunteer numbers, physical workload, limited institutional support, and accessibility challenges.
Governance failureCommunityHealthPolicyWelfareCultivating Publicness Through Urban Agriculture: Learning from Aarhus and Rotterdam
2024Melissa Anna Murphy, Pavel Grabalov · The Geojournal library · Europe
A study of urban agriculture initiatives in Aarhus, Denmark, and Rotterdam, the Netherlands, explored how municipalities facilitate urban agriculture and its performance in public spaces. It identified four public service trajectories: increasing access and animation, contributing to social services, producing and distributing food, and building communities. The study found that food production and social services may be little suited for urban spaces requiring high public access, although benefits can reach a broad public if localized and facilitated appropriately.
Limited or null effectCommunityPolicyHealthIs it healthy urban agriculture? Human exposure to potentially toxic elements in urban gardens from Andalusia, Spain
2024Sabina Rossini Oliva, Rafael López Núñez · Environmental Science and Pollution Research · Spain (Andalusia)
This study evaluated potentially toxic elements (PTEs) in vegetables and topsoils from urban gardens in Seville, Cordoba, Huelva, and a mining area (Riotinto), Spain, comparing them with market and peri-urban samples. Soils in the mining area and cities generally showed higher contamination with As, Cr, Cu, Pb, and Zn compared to other locations. Despite this, all PTE concentrations in vegetables from the studied urban gardens, including those from As-contaminated soils, were below health-based guidance values and market levels (except lettuce), and human health risk assessments indicated safe consumption.
Contamination & food safetyHealthPeri-urban agricultureCommunityAssessment of heavy metal transfer factors from soil to edible crops in peri-urban agricultural lands
2024Elliot Buckminster, Charlotte Breckenridge, Thomas Sedgwick · International Journal of Research in Agronomy · United Kingdom
This research quantified soil-to-plant transfer factors for six heavy metals (Cd, Pb, Zn, Cu, Ni, Cr) in lettuce, spinach, and carrot across 20 peri-urban agricultural sites in Berkshire, UK, from 2021-2022. Cadmium exhibited the highest mean transfer factor (0.31), and at 4 of 20 sites, cadmium concentrations in lettuce exceeded the EU maximum limit of 0.20 mg/kg fresh weight. Soil pH was a strong predictor for Cd and Zn transfer factors, with TFs increasing below pH 6.0.
Contamination & food safetyHealthPeri-urban agricultureSoil quality in the urban gardens of Barcelona (Spain)
2024Cosimo Dondini, Xavier Úbeda, Giacomo Certini, Marcos Francos · Journal of Soils and Sediments · Spain (Barcelona)
This study analyzed soils from ten urban gardens in Barcelona, Spain, with a special focus on possible contaminants. Irrigation water was also analyzed, and some of the waters contained a high concentration of salts and nitrites, which are listed as a pollutant. While three tests for heavy metals did not attest to significant pollution, other toxic elements not considered in this study could come from road transport gases or the port of Barcelona. Overall, the soil quality was concluded to be suitable for growing vegetables.
Contamination & food safetyOrganic cycleHealthCommunityProductivity and Efficiency of Community Gardens: Case Studies from the UK
2023Silvio Caputo, Victoria Schoen, Chris Blythe · Land · United Kingdom (London)
Data was collected from seven community gardens and one community farm in London, UK, during the 2019 and 2020 growing seasons using a citizen science approach, investigating crop yield, resource inputs, and social benefits. Results showed very mixed levels of crop and social productivity depending on organizational structure and agenda, with no clear pattern emerging. This study suggests that citywide productivity evaluations based on small data samples may not be reliable.
Limited or null effectCommunityEconomicsHealthClimate changeTrace Elements in Soil and Urban Groundwater in an Area Impacted by Metallurgical Activity: Health Risk Assessment in the Historical Barga Municipality (Tuscany, Italy)
2022Riccardο Petrini, Lisa Ghezzi, Simone Arrighi, Lisa Genovesi, Chiara Frassi, Luca Pandolfi · International Journal of Environmental Research and Public Health · Italy (Tuscany)
Trace elements were measured in soil and groundwater in the Fornaci di Barga urban area, Tuscany, Italy. Results indicate that Cu, Zn, and Cd are the main contaminants in surface soil, likely originating from airborne particulate matter deposition from metallurgical activity. Risk assessment considering soil ingestion and dermal contact exposure routes revealed that the cadmium Hazard Quotient approaches unity for children, and the cadmium risk-based concentration is only slightly lower than the maximum concentration measured in soil.
Contamination & food safetyHealthVisionscapes: combining heritage and urban gardening to enhance areas requiring regeneration
2022Grete Swensen, Vebjørn Egner Stafseng, Véronique Karine Simon · International Journal of Heritage Studies · France (Bordeaux)
This comparative case study examines two regeneration projects, the Darwin Ecosystem Project in Bordeaux, France, and Dr. Dedichen’s Greenhouse in Oslo, Norway, to understand how heritage combined with urban gardening can enhance areas requiring regeneration. The study notes that conflicting economic, political, and cultural views are likely to affect the heritage discourse in marginalized urban areas. It describes how old buildings and historical fragments can be integrated into urban planning initiatives, with residents, artists, and citizen groups cooperating with planning authorities to transform neighborhoods.
Governance failureCommunityPolicyEconomicsHealthExercise, Urban Food Production, Preparation and Consumption: Implications, Benefits and Risks to Grow-Your-Own (GYO) Gardeners
2022Jonathan Stubberfield, Mads Troldborg, E. Louise Ander, N.M.J. Crout, Scott D. Young, Rupert Hough · Agronomy · United Kingdom
This study investigated the influence of gardening routines on health benefits and risks among 120 urban gardeners in the UK. Participants showed a correlation between autumn/winter gardening activity and fruit/vegetable consumption, with higher physical activity levels and lower BMI than average. However, while gardening offers health benefits, the health risks from gardening on soils mildly contaminated with cadmium and lead may outweigh these benefits, requiring formal consideration within a risk management framework.
Contamination & food safetyHealthDIYBiodiversityAllotment gardens: Psychosocial benefits and conflictual community aspects
2022Arnaud Sapin, Philippe Bodénan, Thierry Lebeau, Ghozlane Fleury‐Bahi · Journal of Community & Applied Social Psychology · France
A qualitative study in Nantes, France, interviewed 28 allotment garden users to examine psychosocial impacts. While highlighting benefits like psychological well-being, physical health, self-development, and social bonding, the study found these were balanced by various conflicts reported by participants. Lexicometric analysis confirmed that positive and negative social aspects are significantly associated and must be considered jointly.
Equity & displacementCommunityHealthPolicyFirst report demonstrating the presence of Toxocara spp. eggs on vegetables grown in community gardens in Europe
2022Sara R. Healy, Eric R. Morgan, Joaquín M. Prada, Martha Betson · Food and Waterborne Parasitology · United Kingdom
This proof-of-concept study investigated the presence of Toxocara spp. eggs on 82 'ready-to-eat' vegetable samples (lettuce, spinach, spring onion, celery) from 16 community gardens in southern England. Two lettuce samples tested positive for Toxocara spp. eggs, showing an overall prevalence of 2.4% for vegetable samples and 6.5% specifically for lettuce. This study is the first to demonstrate Toxocara spp. eggs on vegetables grown in community gardens in the UK and Europe, highlighting biosecurity and zoonotic risks.
Contamination & food safetyCommunityHealthAnalysis of the Physical Structure of School Gardens as Learning Environments
2021Zerrin Mercan, Büşra BİLİR, Nilüfer Darıca · Cukurova University Faculty of Education Journal · Turkey
This qualitative study examined the gardens of 27 preschool education institutions in Gaziantep province as physical learning environments. Findings showed that while physical and social areas existed in school gardens, they required qualitative support. Silent areas were very limited and located within vocal areas, and creative and sensory areas were not present in the school gardens.
Limited or null effectFood educationCommunityHealthDoes visiting a community garden enhance social relations? Evidence from an East European city
2021Petra Hencelová, František Križan, Kristína Bilková, Michala Sládeková Madajová · Norsk Geografisk Tidsskrift - Norwegian Journal of Geography · Europe
This study aimed to identify the impact of visit frequency to community gardens in Slovakia on members' perception of membership importance, satisfaction with community relations, perceived improvement in social relations, and influence on quality of life. A mixed-methods approach, including a questionnaire survey and semi-structured interviews, was used. The analysis did not confirm a dependence between visit frequency and the gardens' impact on members' communities, and found no statistical relationships between the variables in the analyzed data set. However, members positively rated relationships within those communities.
Limited or null effectCommunityHealthCan urban agriculture be used to improve green infrastructure and social well-being? The urban garden in the Ponticelli neighbourhood of Naples
2021Fabio Amato, Lucia Simonetti · Journal of urban regeneration and renewal · Italy (Naples)
This paper focuses on the social urban garden in the Ponticelli neighborhood on the eastern outskirts of Naples, Italy, an area facing significant social and cultural problems including high unemployment and crime rates. The urban garden demonstrates how social cohesion can be built through urban agriculture and contribute to sustainability. However, the initiative risks remaining isolated and providing limited benefit to regional environmental sustainability efforts if not framed within an overall metropolitan strategy.
Limited or null effectCommunityHealthClimate changeFood sovereignty & justicePotential Toxic Elements Accumulation in Several Food Species Grown in Urban and Rural Gardens Subjected to Different Conditions
2021Sabina Rossini Oliva, Rafael López Núñez · Agronomy · Spain
This study investigated potential toxic element contamination in food and soils from urban and rural gardens in Seville, Spain, including urban gardens in a mining area. Soils from mining gardens were the most contaminated. While arsenic, cadmium, and lead concentrations in studied vegetables did not exceed legal maximum levels, high levels of barium (up to 42 mg kg−1) and zinc (up to 123 mg kg−1) were found in leafy green vegetables like chard and lettuce, indicating a need for further study on associated human health risks.
Contamination & food safetyHealthUrban–rural linkageHeavy metals and metalloids concentrations across UK urban horticultural soils and the factors influencing their bioavailability to food crops
2021Marta Crispo, Miriam C. Dobson, Roscoe S. Blevins, William Meredith, Janice A. Lake, Jill L. Edmondson · Environmental Pollution · United Kingdom
Heavy metal (HM) and metalloid concentrations were assessed in 200 urban horticultural soils across ten UK cities. HM were found to be widespread, with most concentrations below UK soil screening values (C4SLs). However, 83% of lead (Pb) concentrations exceeded C4SLs, which is a significant concern. Bioavailable HM concentrations represented a small fraction (0.01–1.8%) of total concentrations, and black carbon (BC) and organic carbon (OC) were suggested to contribute to HM immobilization.
Contamination & food safetyHealthCommunityBiodiversity