Research & reports

Magdalena Raftowicz, Mirosław Struś · · Poland

This theoretical study analyzes the potentials and barriers to the development of Community-Supported Agriculture (CSA) in Poland, drawing on existing research. It identifies key barriers to CSA development, including financial, legal, organizational, and social factors, which originate from both farmers and consumers. The ongoing land ownership concentration in Poland, fostering industrial agriculture, is contrary to sustainable development and EU agricultural policy, posing a significant barrier to CSA development, particularly for farmers.

Paris Pencharz, Peter H. Verburg, Pierre Chopin · Landscape and Urban Planning · Europe

This study investigated the conditions enabling urban agriculture (UA) at a 1 km² scale across 11 large European cities. The intercity model suggested that UA is more likely found in greener, central neighborhoods with lower property prices and lower proportions of locally born residents. However, there is not a consistent set of factors implying UA presence, suggesting other social and policy factors might be at play.

Berliner, Susanne · · Germany

An ethnographic inquiry into a "refugees welcome" community garden in Germany offers power-critical reflections on social encounters, participation, inequalities, and the dynamics between 'the host' and 'the newcomer' in home-making. The study enhances understanding of how people with refugee biographies shape their surroundings and how communities navigate social heterogeneity. Specifically, it highlights inequalities and power dynamics within the context of home-making.

María 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.

Antonio 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.

Hannah Bücheler, Christine Bosch · Agroecology and Sustainable Food Systems · Germany

This paper explores the potential of Community-Supported Agriculture (CSA) in Germany, applying Erik Olin Wright’s concept of real utopia to assess if CSA challenges capitalist structures. Drawing on secondary literature, the study evaluates the desirability, feasibility, and achievability of CSA. The results suggest that CSA in Germany qualifies as a real utopia, but faces limitations to growth due to implementation constraints such as the need for additional market channels and access to land.

İsmail Suat Başoğlu, Bahadır KOZ · Karadeniz Fen Bilimleri Dergisi · Turkey (Giresun City Center)

This research evaluated the diversity of flowering plants, physical properties of garden areas, and green space in 18 high schools in Giresun City Center. A total of 45 flowering plant species were identified in the school gardens, but the overall presence of endemic and rare species was found to be low. These findings indicate that high school gardens in Giresun City Center require improvement in terms of existing green areas and plant diversity.

Magdalena Raftowicz, Mirosław Struś · · Europe

This chapter establishes a theoretical framework for examining the development of Community-Supported Agriculture (CSA). It argues that CSA aligns closely with sustainable development theory and should be regarded as an alternative to industrial agriculture. The analysis concludes that CSA constitutes a form of social and constructive innovation consistent with the sustainable development paradigm. However, the low level of social capital represents a key barrier to implementing the classical CSA model in Central and Eastern Europe.

Anton Parisi, Felix Zoll, Faiza Darkhani · Agriculture and Human Values · Germany

Aspects of diversity, equity, and inclusion (DEI) in German alternative food networks (AFNs) were explored through literature, interviews, and one stakeholder workshop. The inquiry found that while women are better represented in AFNs compared to conventional food systems, groups may be disproportionately white and higher-class. Flatter hierarchies and general openness to participation, though supposed prerequisites for food justice, do not guarantee that traditional gender roles, passive exclusion, or social barriers are averted.

Johannes Langemeyer, Gabriele Gervasi, Sergi Ventura Caballé, Gara Villalba Méndez · Ecology and Society · Spain (Barcelona)

This study examined the spatial-temporal transformations of peri-urban agriculture in the Metropolitan Area of Barcelona from 2003 to 2015, combining spatial analysis of land use changes with qualitative insights from stakeholder interviews and workshops. Results reveal that the significant decline of peri-urban agriculture is driven by a complex interplay of real-estate speculation, land fragmentation, infrastructure development, evolving land use policies, and ecological pressures from land abandonment and environmental protection. Despite efforts to preserve agricultural spaces, the decline of peri-urban farming remains significant.

Rose 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.

Kinga Kimic, Magdalena Błaszczyk · Sustainability · Poland (Warsaw)

This study identified and assessed vegetable cultivation projects submitted to the Warsaw Participatory Budget (WPB) between 2015 and 2023. The research classified projects into six types and evaluated them across social, functional, ecological, and economic dimensions. The results showed that vegetable-related projects in the WPB were decidedly niche, with only 101 initiatives submitted and 31 implemented, primarily focusing on education for children rather than direct food access.

Marta Melon, Tomasz Dzieduszyński, Piotr Sikorski, Beata Joanna Gawryszewska, Maciej Lasocki, Arkadiusz Przybysz · Sustainability · Poland (Warsaw)

The capacity of Family Allotment Gardens (FAGs) in Warsaw, Poland, to provide air-pollution filtration and microclimate regulation was quantified. Particulate matter, air temperature, and relative humidity were measured inside and outside three allotment complexes in autumn 2023. Results showed a moderate reduction in PM concentrations inside gardens (by about 2 µg/m³) and slightly higher humidity (2.1%). However, the cooling effect was weak (less than 0.3 °C), indicating a limited spatial range under autumn conditions.

Jana Marion Böhme · PubData · Europe

This study investigated the current state and professionality of biodiversity monitoring in food forest projects and influencing social-ecological factors through an online survey and interviews with German and Dutch experts. It found heterogeneous characteristics and professionality levels in monitoring activities, primarily due to context factors like actors, governance systems, and socio-economic settings. The professionality of monitoring depended on volunteer and expert availability and funding, indicating a lack of integrated, standardized, and systematic monitoring concepts and institutionalization.

Mesut YILDIZ · Agroecology and Sustainable Food Systems · Turkey (İzmir)

The Kadifekale Urban Orchard in İzmir, Turkey, was analyzed as a qualitative case study, showing that municipally supported urban agriculture functions as a relational public infrastructure reconfiguring women's labor, care responsibilities, solidarity networks, and public visibility. Based on one year of participant observation, in-depth interviews with 96 women, and focus group discussions, findings revealed women use the orchard to create space outside the home, build solidaristic ties, and increase public visibility. However, the case also revealed a persistent governance tension: municipal support is indispensable, yet women's influence over strategic decisions remains limited.

Charlotte Gallagher, Daniel López-García, Parisi, Anton, Cuevas, Soledad · Zenodo (CERN European Organization for Nuclear Research) · Europe

An outcome report from strategic workshops in Valladolid, Flanders, and Wrocław, engaging 33 diverse local stakeholders, assessed key policy and governance challenges facing urban agriculture. The most urgent and actionable priority identified across all three regions is the lack of coordination and knowledge sharing, underscoring a critical need to build resilient urban agriculture coalitions. To address broader structural issues like land access, stakeholders emphasized bridging the urban-rural divide, overcoming political short-termism, and establishing a shared understanding of urban agriculture's multifunctionality.

Magdalena Raftowicz, Mirosław Struś · Sustainability · Poland

An empirical study in Poland, based on a critical literature review and a 2024 CAWI (computer-assisted web interview) survey of CSA producers, examined whether social capital theory explains food producers' engagement in Community-Supported Agriculture (CSA) and whether this holds in practice. It found that social capital theory does explain the mechanisms underlying CSA engagement, with implications for local food system and small-farm policy, but that because of Poland's low level of social capital, the CSA model there remains only a niche complement to traditional agriculture, functioning primarily for a narrow group of socially and environmentally conscious consumers and small producer clusters.

Ayhan Horuz, Güney Akınoğlu · · Turkey

A Turkish book chapter arguing that agriculture-derived air pollution, compounded by growing industrial and urban pollutant loads, is threatening food production, product quality, and food security by directly and indirectly impairing plant growth and development. It notes that population growth, energy production, transportation, waste management, and biomass burning have substantially increased atmospheric organic and inorganic pollutants, pushing air quality beyond acceptable limits in many regions. The first part evaluates the effects on agroecosystems of tropospheric (ground-level) ozone, PM2.5 and PM10, nitrogen oxides (NOx), sulfur dioxide (SO2), agricultural ammonia (NH3), and volatile organic compounds (VOCs), detailing how tropospheric ozone suppresses photosynthesis causing yield losses in staple crops such as wheat and soybean, and how particulate matter directly and indirectly affects soil and plant health, alongside the effects of acid rain and nitrogen deposition on soil fertility, water quality, and ecosystem balance, assessed against the four pillars of food security—availability, access, utilization, and stability. The second part discusses integrated policy approaches, industrial emission control technologies, and low-emission transport systems at the macro level, alongside agricultural strategies such as precision farming, improved fertilizer management, and innovative production techniques, and the role of green infrastructure in urban planning.

R. E. Molenaar, Marcel Pleijte · · Netherlands

A Wageningen University Science Shop report examines measures to improve water management for the "duinlandjes", centuries-old allotment gardens in the dunes near Egmond aan Zee, Netherlands, that form part of the Zeesdorpenlandschap cultural heritage. Commissioned by the Duinlandjesvereniging de Noord association, it investigated sustainable solutions from sociocultural, hydrological and ecological perspectives. The duinlandjes are currently experiencing flooding that makes cultivation very challenging. A stakeholder analysis found that while collaboration between the association and drinking water company PWN has advanced, interactions among stakeholders remain fragmented, and it calls for the province of Noord-Holland to take an active coordinating role. The hydrological analysis identifies winter precipitation surplus as the main driver of rising groundwater, projecting that climate change will bring wetter winters and drier summers with greater groundwater fluctuation, though long-term groundwater trends remain uncertain while winter/spring water excess will probably continue. The ecological risk assessment highlights the vulnerability of surrounding dune habitats, noting that draining and diverting excess rainwater can cause habitat degradation and increased drought stress.

Julija Bakunowitsch · Urban Planning · Germany

This qualitative study examines a publicly funded urban gardening project in Dortmund, Germany, implemented as a labor-market activation measure on temporarily available land targeting employable welfare recipients. Drawing on interviews, participant observation, and document analysis, it combines the concept of "food justice" with valuation studies to analyze how labor, land, and exchange are valued in everyday practice. The findings reveal tensions between empowerment and dependency, care and control, and social recognition and material precarity: while participants experienced gardening as meaningful work and a source of social participation and belonging, these valuations remained bounded by welfare regulations, temporary land tenure, and charity-based food distribution. The study concludes that such temporary urban gardening projects function as sites of plural, negotiated valuation where justice is enacted only provisionally, through everyday practice, within the limits of welfare governance.

Evangelista et al. · Agronomy for Sustainable Development · Europe

This 8-year case study tracked tomato cultivation in a rooftop greenhouse. Peak yield reached 49 g plant−1 day−1 in the 2023 cycle, but overall yield declined by 31.2% across the 8 years. Best water use efficiency reached 36.8 g/L under reduced irrigation. Solar transmittance dropped from 50.9% in 2015 to 46.4% in 2023 due to polycarbonate degradation, and life-cycle global warming impact rose from a minimum of 0.54 kg CO2eq to 0.94 kg CO2eq in 2023.

Plinth · Plinth · United Kingdom

Published 5 April 2026 and updated 14 June 2026. Full cost recovery means funders covering not only a project's direct costs but its proportional share of overheads — rent, finance, IT, HR and chief-executive time. The article works through an example where two of ten staff (20 per cent of capacity) deliver a project, so £28,000 of £140,000 in annual overheads is added to £85,000 of direct costs for a £113,000 budget, and notes that overhead rates of 15–25 per cent are common sector guidance. It argues that accepting grants below true cost is a structural funding problem rather than a budgeting error, with consequences including staff burnout and governance risk, and notes that charity staff earn roughly 7 per cent less per hour than equivalent roles elsewhere in the economy.

Juliane 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.

Mercedes Muriel Sáiz · Dialnet (Universidad de la Rioja) · Spain (Madrid)

This article examines the phenomenon of urban gardens from a socio-community perspective, based on a methodology combining a literature review and participant observation in the community garden Ensancha el huerto (Alcorcón, Madrid). The analysis shows that urban gardens operate as micro-ecosystems of mutual support and learning, but the study also highlights risks associated with institutionalization, commodification, and legal insecurity surrounding such initiatives.

Christoph 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.