Research & reports

Jens Lachmund · · United Kingdom (London)

This chapter traces the emergence of initiatives promoting urban agriculture in London, a pioneering city for urban agriculture in Europe, from a history of knowledge perspective. It identifies three formative episodes: open civic experimentation in community projects, city modeling and surveying in food planning scholarship, and government-sponsored knowledge mobilization campaigns. These processes shaped London as a food-system and a space for community engagement.

Joanna Ziemkowska · Studia Ecologiae et Bioethicae · Poland

A historical outline of school gardens in Poland and their past and current possibilities of use were presented. In recent decades, school gardens had lost their educational appreciation, remaining in few schools primarily for aesthetic functions. This article discusses how school gardens may contribute to preventing "nature deficit" and provide a sense of closeness to nature even in urban realities, noting their re-emerging therapeutic potential (hortitherapy).

Purificación Marín Sanleandro, Ana María Gómez-García, M. Arantzazu Blanco Bernardeau, Juana María Gil-Vázquez, María Asunción Alías-Linares · Forests · Spain

This study in the mid-plain of the Segura River (SE Spain) assessed soil properties and agricultural potential by collecting 68 arable soil samples. Statistical analysis revealed significant differences in organic carbon distribution between calcaric Fluvisols and calcaric Regosols, and among industrial, cultivated, and abandoned soil uses. Cultivated Fluvisols showed a higher average organic carbon content (11.35 g kg−1) compared to abandoned (9.33 g kg−1) and industrial (5.13 g kg−1) uses.

Alioune Badara Dabo · Norois · France (Île-de-France)

This article analyzes how the public land tenure system, introduced in the 2018 "Agricultural Pact" in the Île-de-France region, articulates with local farming systems. Based on a qualitative survey conducted in the Green Belt area, the findings reveal that this land tenure system does not fully align with the strategies of farmers, particularly young people outside family farming who wish to establish themselves in agriculture, as they do not necessarily seek land ownership.

Claudia Pasquero, Marco Poletto · · Europe

This article introduces the Urban Algae Canopy, an innovative architectural system that redefines farming and horticulture within urbanism. It proposes agriculture as a tool for reprogramming Milan's public realm and challenges the separation between urban and rural conditions. The Urban Algae Folly aims to integrate technical and scientific research with societal needs through architectural design.

Koen van der Gaast, J.E. Jansma, Sigrid Wertheim‐Heck · Agriculture and Human Values · Netherlands

This study explored how residents of Almere Oosterwold, Netherlands, envision and organize urban agriculture futures, where 50% of plots must be used for urban agriculture. Using futuring, it found that residents have diverse future perspectives and can formulate specific actions but struggle to commit to them, attributing this to temporal dissonance. The paper concludes that both planning and entrepreneurship are necessary for realizing urban food futures.

Branduini P. · Virtual Community of Pathological Anatomy (University of Castilla La Mancha) · Italy (Milan)

This paper reflects on management and training issues in landscape restoration, based on two pilot water meadow restoration sites in the Milanese peri-urban agricultural area. A training course for "campari" (water flow controllers) was organized at the second site, attracting diverse participants including professionals and vulnerable groups. While the course increased participant awareness, it resulted in a decrease in restoration quality compared to work by professionals at the first site. This led to a participatory management process involving owners, tenants, and volunteers to address the landscape's high perishability.

Evinç Doğan, Federico Cuomo, Luca Battisti · Sustainability · Italy (Turin)

This paper explored strategies for reviving urban greening in post-industrial landscapes through nature-based solutions (NbS), using the case of Turin's old FIAT premises in the Mirafiori Sud area. Data were collected through public literature review, interviews, and focus groups with policymakers, volunteers, and inhabitants. Qualitative thematic analysis showed that Mirafiori Sud became a co-creation hub for sustainable solutions, regenerative art in shared spaces was crucial for community engagement, and urban agriculture support could improve alternative food networks.

Amy Russell, Ziqi Li, Mingshu Wang · International Journal of Applied Earth Observation and Geoinformation · United Kingdom (Glasgow)

This study investigated the distribution of urban agriculture in Glasgow, Scotland, UK, finding that existing projects are mostly centrally located, covering 36% of the total population (approximately 635,000) within a 10-minute walk. A positive correlation was found between walking travel time to the nearest urban agriculture project and food desert status, indicating access disparity. Using the Maximal Covering Location Problem model, the research identified that a minimum of 15 new urban agriculture projects on vacant and derelict land could increase population coverage to 49% and equalize access disparity to a statistically non-significant level.

Tom Critchley · Temes de disseny · United Kingdom (London)

This ethnographic case study examines DIY design practices at The Grove Skatepark in London, UK, viewing it as an urban commons. Fieldwork revealed DIY practices as "learning-by-doing," fostering vocational and soft skills, and supporting a community that includes a community garden and arts workshops. However, the study also found that while the space is inclusive, its governance centers agency around "core skateboarding," reinforcing masculine hegemonies.

Davide Marino, Francesca Curcio, Francesca Benedetta Felici, Giampiero Mazzocchi · Land · Italy (Rome)

This paper proposes agroecological assessment as a tool for formulating evidence-based local food policies, adapting the Tool for Agroecology Performance Evaluation (TAPE) model on a sample of 20 farms in the city-region food system of Rome, Italy. Data analysis showed that agroecological principles are not fully adopted by the majority of farms considered in Rome. Additionally, farms with the highest agroecological level are mainly driven by social factors and have a lower propensity for innovation, which could hinder the transformation process of food systems.

Maraike Probst, María Gómez‐Brandón, Cecilia Herbón, María Teresa Barral, Remigio Paradelo · Applied Soil Ecology · Spain

This study evaluated fungal and bacterial communities in 40 soil samples from 10 urban allotment gardens in Santiago de Compostela, Spain, using DNA sequencing. While microbial richness was comparable to less anthropogenically influenced urban soils, the deterministic effect of soil properties and geographical distances was negligible. Fungal and bacterial communities followed a random distribution and formed very small, often unconnected, microbial association modules, suggesting potential implications of anthropogenic activity for soil health and ecosystem functionality.

Shivant Jhagroe · Urban Studies · Netherlands

A study of the Gandhi-garden, a community garden in Rotterdam, the Netherlands, that is part of the global Transition Towns movement, drawing on participatory ethnography, interviews, and online documents. Challenging the anthropocentrism common in research on urban sustainability and resilience, the paper analyses everyday acts such as weeding and permacultural planting as "more-than-human assemblage" place-making practices involving insects, plants, soil, and fences that challenge urban neoliberalism. It also examines expressions of solidarity with Palestine through olive trees and non-violence thinking, alongside tensions between humans and non-humans over dog waste and birds that take harvested produce.

Emanuela Granata, Paolo Pedrini, Luigi Marchesi, Chiara Fedrigotti, Paolo Biella, Silvia Ronchi, Mattia Brambilla · Agriculture Ecosystems & Environment · Italy

This study investigated the environmental and management factors influencing bird communities, pollinating insects, and two ecosystem services — pollination and nature-based recreation — along an urban-natural gradient dominated by agricultural areas (vineyards, apple orchards, and grasslands) in northern Italy. Flower-visiting insects were mainly affected by management and environmental-climatic variables, with flowers at field margins and within vineyard and apple-orchard inter-rows best predicting pollinator and flower-visiting-insect abundance; sward height and grassland cover promoted insect abundance, while vineyards and apple orchards had a negative effect on it. Bird communities were mainly shaped by land-use/land-cover and management variables, with landscape heterogeneity and linear elements having a major positive effect; apple orchards negatively affected the richness and abundance of most bird species, and vineyards negatively affected overall bird abundance, while hedgerows had a positive effect on richness. Nature-based recreation was greater in areas with low or intermediate vineyard or urban cover, with apple orchards and intensively managed grasslands having negative effects and waterways a positive effect. The study concludes that apple orchards and large vineyards are largely unsuitable for biodiversity and ecosystem services.

Borja Ferrández-Gómez, Juana D. Jordá, Antonio Sánchez‐Sánchez, Mar Cerdán · Sustainability · Europe

A study of nine soils (Technosols) developed over construction debris in Alicante, southeast Spain, analyzing mineralogy, elemental composition and metal availability over two consecutive years, 2019 and 2020. The soils were similar to forest soils in the same area, with no evidence of asbestos clays or excess harmful elements, though DTPA extraction revealed high levels of Mn and Zn in some soils. Organic carbon and DTPA-extracted metal content differed between the two years with no clear relationship observed between them; organic matter content was higher and DTPA-extracted elements were lower in 2019, which the authors attribute to above-average rainfall that year possibly washing away dissolved materials and fine soil particles while promoting natural vegetation growth that increased organic matter and immobilized elements. The study concludes that because metal mobility varies with weather and soil characteristics, and because urban soils develop on materials that require attention despite the benefits of green space, annual monitoring plans for heavy-metal availability are needed, particularly where plants are grown for human consumption, along with controls on vegetables grown in these soils and restricted garden use if problems are found.

Michael G. Parkes, Rebekah O’Rourke, Tiago Domingos, Ricardo F. M. Teixeira · Sustainability · Europe

An experimental indoor vertical farm urban-agriculture project involving 27 stakeholder groups was set up in a university building in Lisbon, Portugal in 2018 and closed in 2022; this study analyzed the governance dimension of the project's sustainability using role-constellation mapping of the stakeholder groups and force-field analysis across seven governance factors to understand why the project did not continue. It found that despite early positive outcomes across environmental, social and economic dimensions, the project failed to establish a network of stakeholders consistently engaged in governance from the outset, and that inadequate project culture and a lack of critical governance factors led to a failure to convey a sense of ownership to stakeholders, contributing to the project's closure.

Martin Šlachta, Tomáš Erban, Alena Votavová, Daniela Tomešová, Marta Václavíková, Taťána Halešová, Elena Shcherbachenko, Tomáš Bešta, Magda Edwards‐Jonášová, Renata Včeláková, Vladana Procházková, Pavel Cudlín · Journal of Apicultural Research · Europe

This study investigated pesticide contamination using larval food provisions (a mix of pollen and nectar) of mason bees (Osmia spp.) nesting in artificial shelters at twelve allotment garden sites in Prague and Brno, with seven commercial croplands (fruit orchards, oilseed rape fields) selected for comparison. In total, 79 samples of larval provisions were analyzed using a validated UPLC-MS/MS method covering 262 pesticides and related metabolites. Fifty-six pesticide residues were detected in the allotments and 74 in cropland sites, with 50 compounds common to both; fewer residues were found in allotments (mean 14.3±0.9) than in croplands (21.5±1.1; df=17.4, t=-2.9), though some residues exceeded 10 ppb. The highest levels were observed for the fungicide pyrimethanil (mean 1,989 ppb, maximum 3,983 ppb) and, among insecticides, thiacloprid (mean 136 ppb, maximum 170 ppb). The results supported the view of a lower risk of pesticide exposure in urban allotment gardens than in croplands, though given limited knowledge of sublethal effects of pesticides, and especially pesticide mixtures, on solitary bee development, the study recommends regulation or control of pesticide use in allotment gardens.

Anni Müüripeal, Bianka Plüschke-Altof, Anton Küünal · Cities · Europe

Drawing on the practitioner memoirs of Tallinn gardener Anton and in-depth interviews with city officials and gardening activists, this case study traces how Anton moved from community gardening to guerrilla gardening. It applies a more-than-human theoretical lens to show that the strong emotions driving early community gardening experiments led to a more controlled, institutionalized governance model, which alienated first-generation activists like Anton and pushed him toward guerrilla gardening instead.

Alicia Papanek, Catherine Campbell, Hannah Wooten, John Diaz, Valeria Caicedo Zapata · EDIS · Spain

A Spanish extension publication aimed at urban residents, students, community members, extension agents, and local government officials interested in developing, supporting, or participating in urban agriculture. It covers the definition of urban agriculture, common characteristics, types of food produced, commonly used production methods, and the goals of different types of operations, closing with a list of additional resources on urban agriculture and gardening techniques for beginning and experienced growers.

Elsa Blareau, Pauline Sy, Karim Daoud, Fabrice Réquier · Insects · France

A study near Paris, France, evaluated the effects of insect-mediated pollination service and potential pollination deficit on fruit set, seed set, and fruit quality (size, weight, malformation) in strawberries (Fragaria × ananassa) growing in an urban area, using flower-visitor observations and pollination experiments. Flower-visitor observations found that the pollinator community consisted solely of unmanaged (wild) pollinators, despite beehives being present in the surrounding landscape. Pollination experiments showed that wild-insect pollination improved fruit size as a qualitative measure of production but did not improve fruit set, and no evidence of pollination deficit was found in this urban environment.

Mahir Yazar, Ece Baykal Fide, İrem Daloğlu Çetinkaya · Journal of Environmental Policy & Planning · Turkey

A 2023 study of climate policies in nine cities in Turkey examined how vulnerable groups and individuals are identified and how land-use policy is developed to address the identified vulnerabilities and climate justice concerns, using policy content analysis and expert interviews. The analysis found critical relationships between identified vulnerable groups, responsive land-use policy and climate justice. While social-aid municipalism-related vulnerabilities dominated districts' climate policies, nature-based solutions (NBS) — especially green infrastructure and urban agriculture — emerged as the dominant climate adaptation approach. However, the way urban vulnerabilities are prioritized in the climate and sustainability plans places less emphasis on intersectionality and infrastructure-related vulnerabilities, and tokenism of justice occurs in the policy documents: the plans do not incorporate vulnerable communities into land-use planning. The study concludes that the complexity of responsive land-use policy requires greater awareness of how to practically support vulnerable communities.

Julio César García-Colin, Carlos Díaz-Delgado, Humberto Salinas-Tapia, Carlos Roberto Fonseca, María Vicenta Esteller Alberich, Khalidou M. Bâ, Daury García-Pulido · Water · Spain

Using lysimeter data from a golf course in Spain, researchers designed and validated a sustainable urban agriculture drainage system with water reuse (SUADS-WR) based on a daily water balance, estimating reference evapotranspiration via the Penman-Monteith or Hargreaves-Samani methods. Compared with experimental data, estimated irrigation depths were lower than the water actually supplied, and estimated percolation matched measured field drainage. Implementing SUADS-WR allowed harvested water to cover more than 38% of the crop's annual water demand.

Julia M. Schmack, Monika Egerer · Urban Ecosystems · Germany

A study in 30 urban community gardens in Berlin and Munich, Germany, observed 20 focal plant species and 13 common bee and non-bee flower visitor groups, examining how landscape urbanization and the availability of floral and nesting resources within gardens affected the complexity (nestedness, linkage density, connectance) of pollinator interaction networks. Dominant flower visitors changed over the growing season, with non-bee visitors such as ants and flies dominant early in the season and bees becoming important later. Nestedness of the flower visitor network increased with floral richness within gardens, while floral abundance, the impervious surface surrounding gardens, garden size, and nesting resource availability did not strongly influence the networks. The findings indicate that high floral richness in community gardens can ensure the complexity and stability of flower visitor networks, that non-bee visitors play an important role especially in the shoulder seasons, and that urban gardeners play a key role in mediating flower visitor interactions through their gardening practices.

Jesús Sanz Abad, Sara Sama Acedo, Gaël Carrero Gros · · Spain

Case studies of two cooperative enterprises (in finance and forestry) and one new urban commons — community gardens in Madrid — all located in Spain, were analyzed using ethnographic methods within the field of solidarity economy and commons. The analysis found tensions between the initiatives' economically and politically "transformative" aspirations and the reality of operating in a market-driven capitalist environment, alliances and tensions arising from interactions with established institutions, and dilemmas or conflicts between maintaining ideological coherence and extending the initiatives' social base.

Noémi Gonda, Péter József Bori · Geoforum · Europe

A study using the case of Hungary examined how agricultural initiatives such as Community Supported Agriculture, permaculture, and small-scale and regenerative farming relate to sustainable rural politics under an authoritarian regime. Based on qualitative interviews conducted in Hungary, it identifies three rural pillars sustaining the Hungarian authoritarian regime — unequal land relations, agricultural subsidies, and agricultural commodity sales — and proposes emancipatory alliances, counter-knowledge claims, and emancipatory subjectivities as potential rural pillars of sustainable democracy in response.