Research & reports

Freda G. Sampson, Thomas G. Costello, Stacey Stevens, Desiree Squire · Journal of Law and Society · United States (Detroit)

This paper examines Detroit, United States, as a city in crisis, analyzing redevelopment conflicts between gentrification and revitalization. It applies a "Litmus Test for Equity and Opportunity" to current redevelopment efforts, including the Detroit Future City Plan and projects by Michael Ilitch & Company and Dan Gilbert. The analysis suggests that despite efforts, the complexities of this post-industrial city, particularly regarding its predominantly African-American population, are only superficially addressed, indicating ongoing equity challenges.

Anna di Robilant · McGill Law Journal · Global

Common ownership regimes, such as community gardens and co-operatives in the US, Canada, and Europe, require limiting individual co-owners' ability to freely use resources and exit arrangements to achieve their goals. This creates difficult trade-offs in their design. The article argues that common ownership can foster "equality of autonomy" by providing more equitable access to the means for individual autonomy, but this often necessitates privileging equality of autonomy over full negative freedom.

Marijke D’Haese, Nick Vink, Tharcisse Nkunzimana, Ellen Van Damme, Johan van Rooyen, Anne-Marie Remaut, Lotte Staelens, Luc D’Haese · Development Southern Africa · South Africa

Food insecurity remains high in rural KwaZulu-Natal province, South Africa. This study collected data from 390 beneficiary households in 2010 to assess the perceived impact of the Empowerment for Food Security Programme, launched in 2007, on food security. Findings confirmed that experience-based food insecurity levels were still high, despite the agricultural support program and government income transfers. However, respondents attributed improved dietary diversity and better access to resources to the program.

Prem José Vazhacharickal, Martina Předotová, D. Chandrasekharam, Sharit K. Bhowmik, Buerkert, Andreas · Journal of Agriculture and Rural Development in the Tropics and Subtropics (University of Kassel) · India (Mumbai)

A study surveyed 38 railway gardeners to characterize urban and peri-urban agricultural production along railway tracks in the Mumbai Metropolitan Region. Irrigation water contained nutrients but also heavy metals such as lead, cadmium, and mercury, and pathogens like Escherichia coli. Heavy metal levels exceeded critical thresholds in surface soils for chromium, nickel, and strontium, and in produce for lead, cadmium, and strontium.

Afton Halloran, Jakob Magid · Environment and Urbanization · Tanzania (Dar es Salaam)

Urban agriculture in Dar es Salaam, Tanzania, has received little political support from central and local governments over the past 30 years due to its informal status, leading to land insecurity for many urban farmers. The incorporation of urban agriculture into the Dar es Salaam 2012-2032 Master Plan (unapproved as of June 2013) and its legitimization processes were examined. It was noted that legitimization through policy could also further marginalize urban farmers cultivating open spaces within the city.

Patrick F. Banga · · Zimbabwe

Unsanctioned urban agricultural activities in Emakhandeni High Density Suburb of Bulawayo, Zimbabwe, negatively impact biodiversity. Researchers interviewed 100 people and conducted field visits, finding that the majority of cultivators operate outside existing laws and guidelines. This leads to progressive land degradation, massive deforestation, soil erosion, dried wetlands, lowered water table, and compromised groundwater quality due to pesticides and inorganic fertilizers.

Рена Упитис, Scott Hughes, Anna C. Peterson · Journal of the Canadian Association for Curriculum Studies · Canada

An 8-month qualitative study was conducted at a school garden program in one public elementary school in southeastern Ontario, Canada. Data collected from eight students through observations, semi-structured interviews, and student photographs identified five themes enhancing environmental stewardship (including connecting with nature, caretaking, and harvesting) and three themes explaining the program's long-term success (including parental involvement and community connections). The study highlighted benefits of the school garden program, as well as some difficulties associated with the program and limitations of the study.

Giovanni Attili · IRIS Research product catalog (Sapienza University of Rome) · Italy (Rome)

This study focused on community gardens in Rome, Italy, which largely result from informal appropriation practices. While these gardens can enhance environmental and social quality of life, they require institutional support and present a crucial challenge for urban planning. The study highlights the need to explore tensions between social practices and institutional powers, and questions how public policy can legitimize these self-guiding societal expressions.

Marianne Sarkis, Tiffany Lee, Steph Fenner, Erin Barta, Kristina Kalolo · Clark Digital Commons (Clark University) · United States

Research was conducted using free-list, pile-sort, interviews, and surveys to examine the association between community gardening and food justice among Clark community gardeners in Worcester, MA. The findings supported the conclusion that Clark community gardeners do not conform to the food justice interpretation of a community garden. Although both actors share similar methods and ideologies, neither is attempting to fit the other's definitions.

Laura Knapp, Jodi L. Sangster, Shannon L. Bartelt‐Hunt · International Journal for Service Learning in Engineering Humanitarian Engineering and Social Entrepreneurship · United States (Omaha NE)

This study investigated the influence of lead hyperaccumulating plants on lead uptake by vegetables in an urban community garden in Omaha, NE, a region with significant lead contamination. Tomatoes, carrots, and amaranth were grown alongside sunflowers and mustard greens (hyperaccumulators) in lead-contaminated soil. Data showed higher lead concentrations in the hyperaccumulators and suggested that their presence might have impacted the amount of lead available to surrounding vegetation. Previous work at the garden detected lead in produce, indicating a potential exposure pathway for humans.

김효정 · 한국여성학 · South Korea

Through in-depth interviews and participant observation research targeting women's activist organizations established since 2010, the characteristics of urban agriculture cases led or participated in by unmarried women in their 20s and 30s were analyzed. Unmarried women activists met the growing demand for safe and healthy food among single-person households through community farming in urban areas, practicing agriculture not only for food production but also as a lifestyle pursuit and recreational culture. However, their practices face limitations such as urban space constraints, difficulties for unmarried women to relocate to rural areas, excessive ecological value attribution, and a lack of solidarity with rural communities.

Kyle Kessler, Seth Umbenhauer, Alison R. Noble · Journal of the Pennsylvania Academy of Science · United States (Harrisburg)

Eight soil samples were collected from an urban land plot in Harrisburg, PA, to determine concentrations of copper, nickel, zinc, and lead and assess suitability for an urban garden. While copper, nickel, and zinc concentrations were below EPA recommended limits, lead concentrations ranged from 26 ± 1 mg/kg to 402+ mg/kg, with some samples exceeding EPA standards for heavy metals in home and vegetable gardens. This indicates potential lead contamination in the soil.

Melvin Delgado · Columbia University Press eBooks · United States

This chapter focuses on community gardening as an intervention aimed at addressing obesity, tracing its history in the United States back to the late nineteenth century as a response to social and economic crises. While community gardens can achieve various social, economic, political, educational, and health-related goals, the chapter also discusses potential pitfalls of community gardening. It emphasizes a social justice perspective for community gardens, particularly regarding community inclusion and participatory democracy.

Chris Zimmerman · Soil Horizons · United States

A narrative article profiling the work of soil scientist Samantha Langley-Turnbaugh of the University of Southern Maine, investigating lead contamination in urban soils in Portland, Maine. It traces the concern to the Great Fire of 1866, whose lead paint ash was spread across the city and used as landfill to extend the Portland peninsula, compounded by the city's historical ties to lead-producing industries. The article states that, across US cities generally, lead paint and leaded gasoline are the primary sources of soil lead contamination, and that this contamination is becoming a concern as urban gardening expands.

David DyckFehderau, Nicholas L. Holt, Geoff D.C. Ball, Noreen D. Willows · PubMed · Canada

A study in Alexander First Nation, central Alberta, Canada, used asset mapping with children to understand how community factors shape the lifestyle behaviors of First Nations children living on reserve, who are estimated to be 4.5 times more likely to be obese than Canadian children generally. Participants were a convenience sample of two high school students working at the local health centre and seven grade six children, who used maps, photographs and a town tour to identify 25 activity- or food-related places and spaces. Breakfast, lunch and snack foods (such as chocolate bars and potato crisps) were obtained at school, food and snacks at cultural gatherings, and snacks at the local store, with healthy food choices found to be limited; only two locations beyond the town site were identified for physical activity, and youth recommended building a leisure centre, selling healthier food at the local store, and developing a community garden and berry farm.

Iris T. Stewart, Elizabeth K. Purner, Patricia D. Guzm ́n · Children Youth and Environments · United States (California)

In Santa Clara County (SCC), located at the southern end of the San Francisco Bay Region and marked by high income disparities and an ethnically diverse population, this study used surveys and Geographic Information Systems (GIS) to examine links between the presence and use of school gardens and the socioeconomic and ethnic composition of surrounding neighborhoods. Statistical analysis found that school gardens in SCC are more likely to exist in economically stronger and ethnically less-diverse neighborhoods, showing that garden provision is not equitably distributed. School gardens can be maintained with relatively modest resources — a coordinator, planting area, small budget, and school-community support — yet securing these resources can itself be a significant barrier for some schools. Because natural play areas suited to environmental exploration were not typically found at SCC schools, the study suggests school gardens can play an important role in reconnecting children with the natural world.

Rachel Slocum, Arun Saldanha · · Global

An edited collection (2013) argues that an unacknowledged racial dimension underlies the production and consumption of food under globalization, examining this across three "socio-physical spatialities"—fields, bodies, and markets—through international, multidisciplinary case studies. The volume states that human groups become entrenched in racial hierarchies through food at scales ranging from the household to the slave trade and empire, and includes a chapter specifically addressing urban agriculture and race in South Africa (by Jane Battersby) among contributions covering topics such as bracero labor in California and food-justice organizing in Newtown. The abstract presents this as the collection's conceptual argument rather than as findings from a single empirical study.

A. Bryan Endres, Rachel Armstrong · Food Studies An Interdisciplinary Journal · United States

A legal analysis (Food Studies: An Interdisciplinary Journal, 2013) of Community Supported Agriculture (CSA) in the United States—where CSA participation more than doubled between 2004 and 2009—examines "volunteer-for-food" arrangements and unpaid internships that many CSA farms offer in exchange for labor. It finds that these arrangements do not align cleanly with federal and state employment laws governing minimum wage and workers' compensation, creating a mismatch between the community-participation model embedded in CSAs and the legal regimes that govern them. The paper identifies potential points of flexibility within existing law, explores mechanisms for farmers to avoid regulatory liability, and concludes with policy recommendations to eliminate regulations it characterizes as scale-inappropriate for CSA expansion.

Ruth Stewart, Marcel Korth, Laurenz Langer, Shannon Rafferty, Natalie Rebelo Da Silva, Carina van Rooyen · Environmental Evidence · Global

This is a systematic review protocol — not a completed review — that sets out methods for identifying, appraising and synthesizing evidence on how urban agriculture programs affect food security and nutrition in low- and middle-income countries. It notes urban agriculture is widely promoted as providing the urban poor with food and income while improving the urban environment, but also carries potential disadvantages: use of wastewater can contaminate produce, intensive irrigation can spread malaria and water-borne disease and strain limited water supplies, and soil erosion and intensive fertilizer/pesticide use can pose health risks and environmental damage. Despite the current policy drive to promote urban agriculture, the paper states that the evidence base for its benefits and harms is not well understood. As a protocol, it reports planned search, screening, bias-appraisal and synthesis methods rather than results.

Malin Arvidson, Fergus Lyon, Stephen McKay, Domenico Moro · Voluntary Sector Review, Vol.4 No.1, pp.3-18 (Policy Press) · United Kingdom

A paper analysing how social return on investment (SROI) is used in the United Kingdom to conceptualise, measure and communicate the achievements of social enterprises and charities. It examines the quantification of benefits, the valuing of volunteering, and the ways judgement and discretion are exercised within an SROI exercise. It identifies a particular tension between the participatory element in designing each exercise and the use of its results for competitive funding, and proposes a research agenda on the contexts in which that discretion is applied. Abstract only was consulted.

Kathryn Colasanti, Michael W. Hamm, Charlotte M. Litjens · Urban Geography · United States (Detroit)

This research explores perceptions of expanding urban agriculture in Detroit, Michigan, through semi-structured interviews and focus groups. While revealing widespread support for urban agriculture as a strategy for food security and urban sustainability, the study highlights contested aspects regarding the extent to which it should occur, its purpose, and the people it would involve.

Community Gardening Works! ACGA 2011 Conference, Carolin Mees, Edie Stone · Cities and the Environment · United States

This abstract discusses the rapid expansion of the community gardening movement in US urban areas. It highlights the potential for urban agriculture planning to turn against its original community-driven roots, as suggested by the title. The movement began over 30 years ago, with residents creating gardens on abandoned land, supported by programs like New York City's GreenThumb.

David Tijero · Aldiri: arkitektura eta abar · Spain (Bilbao)

This article criticizes the municipal administration's attitude towards informal allotments on the outskirts of Bilbao. It analyzes the consequences of green space reclamation plans executed in recent years and advocates for policies promoting both formal and informal urban agriculture.

Nahed N. Mahrous · The Journal of Pediatrics · Canada (Hamilton)

This project investigated metal, bacteria, and corn root interactions in metal-contaminated soils from Blackfrairs Community Garden and a Hamilton home. It found that bacterial numbers were lower than in uncontaminated soils, and bioavailable metal concentrations increased over time. High concentrations of metals were detected in grains, with copper, iron, and manganese accumulating in rhizospheres, and zinc distributed throughout root tissue in Blackfrairs plants.

I. Karabozhilova, Barbara Wieland, Silvia Alonso, Laura Salonen, Barbara Häsler · British Poultry Science · United Kingdom (London)

A 2010 questionnaire survey of 30 backyard chicken flock-keepers in the Greater London Urban Area found that while chickens generally had conditions for natural behaviors, most owners did not comply with regulations on catering waste feeding. Disease prevention measures were rare, and a lack of avian and zoonotic disease knowledge among owners was observed, indicating implications for disease control.