Research & reports

Amanda 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.

Pay Drechsel, Andrew Adam‐Bradford, Liqa Raschid-Sally, Drechsel, Pay, Adam-Bradford, A., Raschid-Sally, Liqa · AgEcon Search (University of Minnesota, USA) · Ghana

This chapter introduces urbanization in West Africa, particularly Ghana, the general role of urban agriculture, and the common use of polluted irrigation water. It focuses on irrigated smallholder vegetable production, reflecting on the key challenges, dynamics, and resilience of this farming system.

Ophélie Robineau, Julia Tichit, Thomas Maillard · Espaces et sociétés · Global

This study examines the socio-spatial integration of urban agriculture in three Southern cities, despite its limited consideration in urban planning policies. In Bobo-Dioulasso (Burkina Faso), farmers secure access to productive resources through social relations. In Metro Manila (Philippines), local actor networks ensure the sustainability of practices. In Saint-Louis (Senegal), farmers' self-initiated organizations enable them to assert their interests with urban authorities, highlighting the challenge of urban agriculture not being adequately integrated into planning policies.

Luke Drake · Urban Geography · Global

This study analyzed six case studies of community gardens, categorized by grassroots, externally-organized, and active nonprofit management, to examine how "community" definitions influence participation or resistance in urban food production. The analysis highlights specific organizational and management moments that affect engagement, scrutinizing community gardens as sites of governmentality that produce neoliberal subjects.

Gideon Aghaindum Ajeagah, Yaka Diane Armelle Moussima · Journal of Ecology and the Natural Environment · Cameroon

A study in an urban stream in Yaoundé, Cameroon, characterized Balantidium coli cysts and evaluated environmental factors influencing their dispersal. Round (825 ± 610 cysts/L) and oval (246 ± 300 cysts/L) cysts were found. High abundances of cysts were observed in stations along a piggery effluent near a major market, with higher densities recorded during the short rainy season. The lowest cyst densities were found upstream and downstream.

Julia Laidlaw, Liam Magee · Local Environment · Global

This paper explores stakeholder experiences of community-based urban aquaponics enterprises in Milwaukee and Melbourne using a comparative case study methodology and in-depth interviews. It aims to understand the internal and external factors impacting their success or failure. The study highlights challenges in establishing these enterprises.

Arnaud Frauenfelder, Christophe Delay, Laure Scalambrin · Espaces et sociétés · Switzerland (Geneva)

This article examines a contemporary urban reform in Geneva concerning family gardens, whose status is now in competition with new forms of community gardens. While the reform is presented as necessary, spokespersons for family allotment associations welcome it with some reservation. Social actors' positions for or against the reform implicitly refer to different socially situated modes of gardening and lifestyles, revealing that "urban agriculture" masks heterogeneous social meanings behind a visible consensus.

Mark Matsa, Beauty Dzawanda · · Zimbabwe

This study assessed the performance of Caritas-initiated and sponsored community gardens in Chaka ward, Chirumanzu District, Zimbabwe, during and after the sponsors' regime. Data was collected using questionnaires, interviews, and direct observations, and analyzed with descriptive statistics and content analysis. Results showed that the gardens flourished during Caritas's presence but quickly shrank and folded after the NGO's departure, indicating a lack of sustainability.

Song Pin · Anhui nongye kexue · Global

This paper examines the obstacles and forming factors in project financing for Community Supported Agriculture (CSA), identifying problems such as imperfect investment entities, unclear financing objectives, and single investment methods and channels. Using a four-stakeholder model (project investors, national policy, CSA, and consumers), the study elaborates on the causes of these financing difficulties. It proposes solutions including strengthening CSA's brand and marketing to cultivate loyal customers, and leveraging government, financial institutions, and private capital to address financing challenges.

Ranka Junge, Andreas Graber · Zürcher Hochschule für Angewandte Wissenschaften digital collection (Zurich University of Applied Sciences) · Global

This paper discusses the need for practical tools and a stronger scientific base for sustainable urban farming, noting that visionary schemes often lack current practical application with available technologies. It identifies requirements for urban food production, including high quality, safety, and cost-effectiveness, and suggests innovations in planting, pest control, irrigation, and integration with existing building infrastructures. Aquaponics is presented as having the potential to contribute to all these aspects.

Salwa Tohmé Tawk, Mounir Abi Said, S.K. Hamadeh · Oxford University Press eBooks · Global

This study in the Middle East and North Africa region investigated the relationship between urban agriculture and food security in two peri-urban locations: Bebnine, Lebanon, and Wadi el Seer, Jordan. High food insecurity was prevalent in both locations, demonstrating that producers were more food insecure than non-producers. Food security was found to be strongly associated with poverty and the number of household members.

Yuki Sampei, Yuji Hara, Akinobu Murakami, Armand PALIJON, Kazuaki Tsuchiya, Makoto Yokohari · Journal of The Japanese Institute of Landscape Architecture · Philippines (Metro Manila)

The nitrogen supply-demand balance in compost and vegetable production on vacant lots in suburban residential districts of Quezon City, Metro Manila, was assessed. Analysis revealed that almost half of the subdivisions faced nitrogen oversupply, while several were in short supply. Current centralized composting facilities may not adequately support a continuous compost recycling system due to their distribution patterns. It was proposed that existing barangay-based policies on organic waste management and urban agriculture require greater flexibility and attention to coordination systems across subdivision boundaries.

Kylie Markow, Sue Booth, Stephanie Savio, John Coveney · Nutrition & Dietetics · Global

This study compared perspectives of low socioeconomic individuals and food system representatives regarding access to community-based food systems. Focus groups with low socioeconomic individuals and interviews with food system representatives revealed that affordability, convenience, and knowledge were barriers. While representatives acknowledged these barriers, their understanding of importance differed, and views were divided on strategies, especially concerning affordability. A disconnect exists between the two groups' views on improving access for disadvantaged groups.

Abdirahman Osman Warsame, Fadumo Abdi Mohamud, Ahmed Hassan Ali · Zenodo (CERN European Organization for Nuclear Research) · Democratic Republic of the Congo (Kinshasa)

This scoping review synthesized evidence on the association between heavy metal contamination in vegetables sold in Kinshasa's urban markets, Democratic Republic of the Congo, and human biomarkers of consumer exposure. Available evidence consistently showed that vegetables, particularly leafy greens, from Kinshasa markets contained elevated levels of lead and cadmium, often exceeding international safety limits. However, studies directly linking vegetable contamination with human biomarkers are notably scarce, suggesting a potential exposure pathway but not establishing definitive causation.

Nicole C. List · EchoGéo · Senegal (Pikine)

Based on fieldwork in Pikine, a rapidly urbanized city in Senegal's Dakar region, two interconnected conflict cases concerning the development of urban agricultural land for middle-class and elite housing were analyzed. The analysis indicates that public and private actors, including producers, traditional authorities, real estate developers, and local/central government officials, are abandoning old forms of governance in favor of "territorial alliances" to promote their own urban development projects. These alliances lead to new relationships between local/central government members and civil society, impacting urban Senegal's land registry, property rights, and public infrastructure.

Maeve Bassett · Fordham Research Commons (Fordham University) · Global

Urban gardens are advertised as a solution to limited food access in impoverished areas, but they are not productive enough to globally affect food production and the environment. However, for surrounding communities, urban gardens are cheap and effective solutions for many problems associated with poverty and food deserts, such as obesity, education, social interactions, income supplementation, health issues, dangerous neighborhoods, and refugee assimilation.

James Farmer, Charles Chancellor, Jennifer Meta Robinson, Stephanie T. West, Melissa S. Weddell · Journal of Leisure Research · Global

This study collected data from 712 individuals regarding participation in local food systems, including farmers' markets and CSA programs. Findings revealed a significant association between participants and privilege variables, suggesting that despite promotion, barriers exclude many from engaging in these agrileisure opportunities.

Nobuhle Sebata, Clifford Mabhena, Mkhokheli Sithole · IOSR Journal of Humanities and Social Science · Zimbabwe

A qualitative study in Bulawayo, Zimbabwe, using data from 30 women, 5 key informant interviews, and 2 focus groups, examined urban agriculture's role in women's poverty resilience. While urban agriculture significantly improved food availability and access, its nutritional contribution was low due to a focus on maize, and income generation remained very low due to subsistence production.

Kizito K. Mwajombe · · Tanzania

This study investigated urban agriculture (UA) produce marketing in three Tanzanian municipalities. Findings showed UA farmers lacked pre-arranged contracts with buyers, limiting their marketing, and faced problems including poor packaging, bylaws, taxes, and difficulty meeting consumer preferences. Farmers also lacked direct links to retail and consumer units like supermarkets.

Yuki Sampei, Yuji Hara, Akinobu Murakami, Armando M. Palijon, Kazuaki Tsuchiya, Makoto Yokohari · Institutional Repositories DataBase (IRDB) · Philippines

This study assessed the nitrogen supply-demand balance in compost and vegetable production on vacant lots in subdivisions and barangays in Quezon City, Metro Manila, using GIS. It found that nearly half of the subdivisions experienced nitrogen oversupply, while others faced shortages. Although cooperation among subdivisions within a barangay could improve nitrogen balance, the current centralized composting facilities were deemed insufficient to support a continuous compost recycling system due to their distribution patterns. The study concluded that current barangay-based policies on organic waste management and urban agriculture need greater flexibility and attention to inter-subdivision coordination across barangay boundaries.

Jonathan Crush · · Global

Cities in the global South face a deepening crisis of food inaccessibility, characterized by food poverty, hunger, and malnutrition. This urban crisis is largely invisible to policy and research communities, with less attention given to urban food security than in the 1990s. Urban agriculture is the only aspect of urban food security receiving significant attention, though it is improbably seen as the key to achieving food security in these cities.

Matilda Thelin · · Sweden

This qualitative study in peri-urban Uppsala, Sweden, identifies driving forces influencing land use decisions by commercial farmers and institutional landowners. It notes that approximately 700 hectares of land in Sweden are diverted from food production annually, with Uppsala Municipality showing the greatest change in 2013. The expropriation of agricultural land for urban development leads to farmers losing land resources and increased competition for remaining land, resulting in high land prices.

Christina Jochum · · Argentina (Buenos Aires)

This study examined the social inclusion potential of urban agriculture, focusing on six community gardens in Buenos Aires, Argentina. It analyzed how urban community gardens can promote social inclusion and identified limiting factors. The research found that urban community gardens in Buenos Aires remain an informal strategy, unrecognized by political authorities. The positive impacts of communal gardening on participants and the community are limited by this lack of recognition and often by associated lack of land use rights.

Jonathan Crush · · Global

This article argues that cities of the Global South are experiencing a deepening crisis of food inaccessibility, marked by growing food poverty, hunger and malnutrition, lack of dietary diversity, child wasting and stunting, increased vulnerability to infectious and chronic disease, and a growing obesity epidemic. It states that this urban crisis remains largely invisible to the policy and research communities concerned with global food security, noting that there was more research and policy debate on urban food insecurity in the 1990s, when the Global South was less urbanized than today, and that concern with urban food security has since been displaced by the new international food security agenda and its pervasive anti-urban bias. It observes that the only aspect of urban food security currently commanding significant attention is urban agriculture, which it describes as widely, but improbably, seen as the key to achieving food security in cities of the Global South.

Jennifer Vansteenkiste · Development in Practice · Global

This paper examines the social and gender politics of a women's urban garden project in Cap Haïtien, Haiti, supported by the International Organisation for Migration. The study finds that the development process created an unmonitored symbolic space in which society's normalized gender processes were reproduced, importing broader social inequalities that in turn prevented the project from meeting the women's practical and strategic goals. It discusses how an ecohealth approach, as an alternative design framework, could make this symbolic space visible for critical engagement and analysis by participants.