Research & reports

João Paulo Moreira dos Santos, Luis Carlos Rodrigues da Mata, Maria Clara da Cunha Carvalho, Gabrielly Rodrigues de Araújo, Robério Soares dos Santos, Maria Eduarda Santiago de Araujo, Iraneide Da Cunha Santiago, Edinalva Pereira Campos, José Gustavo Santiago Santos · Journal of Interdisciplinary Debates · Brazil (José de Freitas)

This qualitative case study in José de Freitas, Brazil, analyzed mathematical rationalities in urban community gardens, using participant observation, interviews, and field notes. It found that farmers use ethnomathematical knowledge for spatial organization, soil management, and commercialization. However, these practices showed limitations when confronted with institutional demands for standardization, highlighting a need for critical articulation with formal mathematics.

Hinch J. · Southeastern Geographer · 米国フロリダ州タンパベイ

This study builds an equity-focused, GIS-based multi-criteria decision analysis model integrating socioeconomic, logistical and environmental variables to assess community garden suitability across census tracts in Tampa Bay. High-suitability tracts cluster somewhat in Hillsborough and Pinellas Counties, existing gardens align moderately with modelled suitability, and the paper shows both the utility and the limits of spatial models in equitable urban agriculture planning.

Hayato IIDA, Yasushi Kyutoku, Wakana KUDO, Yoshiki HARADA · Transactions of Japan Society of Kansei Engineering · Japan (Tokyo)

This study investigated whether the UGS (Urban Green Space Scale), an impression evaluation scale for Tokyo's urban green spaces, could assess impressions of two urban rooftop gardens with flat versus stepped spatial configurations. Based on an online questionnaire (N=670), confirmatory factor analyses indicated a poor or unacceptable fit of urban rooftop gardens to the UGS. Exploratory factor analyses yielded different factor structures, suggesting that new scales are required for evaluating impressions of urban rooftop gardens.

Claudia Rochael Oliveira, Eneida Maria Souza Mendonça · Geografia (Rio Claro) · Global

This article aimed to map authors discussing environmental aesthetics in urban agriculture research, inspired by Porteous's work. Using a bibliographic survey and visual representations, the study found no publications intersecting urban agriculture and environmental aesthetics. Research on urban agriculture and landscape was notably greater than on urban agriculture and aesthetics, and studies applying aesthetic theory to urban agriculture were very limited, especially in high-tech contexts like vertical farms.

Jiangxiao Qiu, Hui Zhao · EDIS · Global

This overview identified eight ecosystem services generally attributed to urban agriculture, including food production, microclimate regulation, stormwater retention, and social-cultural values. However, the study found that quantitative evidence for many of these ecosystem services, especially intangible ones, is scarce. It suggests that while urban agriculture could be integral to green infrastructure, further consideration is needed for types, technology, management, and potential tradeoffs.

Kit Prendergast, Amelie M. Vanderstock, Heather Neilly, Catherine E. Ross, Vanessa Pirotta, Patrick Tegart · Austral Ecology · Australia

A reflection on a citizen science project in which five early-career and PhD female researchers guided school-age children across five schools to build artificial flowers, install them on school ovals, and record over repeated 10-minute observations how flower colour (yellow vs. blue) and configuration (isolated, clumped adjacent, clumped mixed-colour, clumped single-colour) affected the number and taxa of visiting insects. The project achieved a low-cost, engaging format and exposure to female STEM role models, but the authors report constraints including having to run it in a season made suboptimal by fixed school curricula, confounding of results caused by the children's own observations, and an inability to verify the collected data.

Johanna Lochner, Marco Rieckmann, Marcel Robischon · Sustainability · Global

A study of Virtual School Garden Exchanges (VSGEs)—which link local gardening with global thinking by having elementary and secondary school students in different parts of the world exchange information about their school gardens and related topics via digital media—focused on educators' perspectives and the learning outcomes they observed, given ongoing controversy over whether VSGEs are suitable for Education for Sustainable Development (ESD) and whether they produce the learning outcomes educators expect. The researchers conducted 20 semi-structured interviews with VSGE educators, analyzed abductively and qualitatively. Results showed substantial overlap between observed and expected learning outcomes and ESD aims, but the data also revealed that learners engaging with international peers were affected by stereotypes and norms in varying ways: on one hand, VSGEs can lead to "Othering," which is not congruent with either ESD or the expected learning outcomes; on the other, they can inspire Transformative Learning that contributes to ESD aims. The study concludes that VSGEs hold potential for ESD depending on a complex interplay of factors, but are not guaranteed to constitute good ESD practice.

Kate Gardner Burt, Gail Mayer, Rachel Paul · Local Environment · Global

A systematic review analyzed 277 community gardening articles to assess outcomes of community garden participation related to food justice, synthesizing 31 studies. Many positive impacts were indicated across seven social and dietary outcomes. Community garden participation was positively correlated with community connectedness, but evidence demonstrating diet improvement was neutral. Methodological rigor in study design and lack of participant racial/ethnic and socioeconomic diversity were common issues, leaving the effectiveness of community gardening as a strategy for a more equitable food system unclear.

Erin Vernoni, Jessica Price, Shoko Kumagai · · Global

A systematic review of quantitative peer-reviewed Farm to School (FTS) research found ambiguity and variability in FTS inputs. This makes it difficult to generalize outcomes for policymakers. The study proposes a pre-tested intensity measurement tool to standardize research in this area.

Bettina König, Ranka Junge, András Bittsánszky, Morris Villarroel, Tamás Kőmíves · Ecocycles · Global

A literature review was conducted on the social, environmental, and economic impacts of aquaponics. The technology has potential applications in various settings, including commercial or community-based urban food production, industrial-scale production, small-scale farming, and educational systems. However, it is concluded that due to the complexity within markets, value chains, communities, infrastructure, and policy settings, further research and data acquisition are needed to fully assess all sustainability aspects.

Heather Ohly, Sarah Gentry, Rachel Wigglesworth, Alison Bethel, Rebecca Lovell, Ruth Garside · BMC Public Health · Global

A systematic review of 40 articles on school gardening programs found that quantitative research was generally of poor quality, with limited evidence for changes in fruit and vegetable intake based on self-report. Qualitative research, though of better quality, attributed a range of health and well-being impacts to school gardens, but more robust quantitative research is needed to support these findings.

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.

Andrew Flachs · Electronic Green Journal · United States

This paper explores the social and cultural effects of urban gardening in the greater Cleveland area, noting that the social impact of community gardens is less studied than other benefits. The author's fieldwork found that many gardeners combine utilitarian functions with environmentalist ideology, contrary to some authors who claim that gardeners are preoccupied with economic impact, leading to a biased conclusion about motivations. The paper aims to convey the complexity of use, function, and intent in these communal spaces.

Dorothy Blair · The Journal of Environmental Education · United States

An evaluative review of U.S. literature on children's gardening found that quantitative studies showed positive outcomes in science achievement and food behavior. However, these studies did not consistently demonstrate improvements in children's environmental attitude or social behavior, and validity and reliability issues reduced general confidence in the results. Qualitative studies documented a wider range of desirable outcomes, but teacher enthusiasm varied based on support and horticultural confidence.

Soren T. Anderson, Sarah E. West · Regional Science and Urban Economics 36(6): 773-789 · United States (Minneapolis-St. Paul)

A hedonic analysis of home transactions in the Minneapolis-St. Paul metro area finds that the value of proximity to open space is higher in dense neighborhoods, those near the central business district, high-income, high-crime, or with many children. Warns that applying the metro-wide average value to a specific neighborhood can substantially overestimate or underestimate what open space is worth there.

Nkawkaw Afriyie, Kofi Adziri, Yaw Asare, Amoako Gyamfi · Zenodo (CERN European Organization for Nuclear Research) · Ghana

A thematic analysis synthesized existing studies on community gardening impact measurement in Accra, Ghana, focusing on methodologies. While varied methods were reported, a notable theme emerged regarding the mixed results and challenges in accurately gauging the impact of community gardening on urban food security indicators, such as vegetable consumption rates among participants. This review underscores the importance of empirical data for understanding the effectiveness of urban agricultural interventions, but highlights methodological inconsistencies.