Research & reports

Bárbara Ribeiro, David E. Pattemore, A. B. Morris, Leo Baldwin-Ramult, Daniel Exeter · Journal of Urbanism International Research on Placemaking and Urban Sustainability · New Zealand

An action research project in Waharoa, New Zealand, transformed a former bowling green into a public, edible landscape. This 400 m2 Living Lab (LL) involved multi-stakeholder cooperation (government, community, and academia), and participants perceived benefits as transition pathways to more nutritious dietary choices, health education, and reduced criminality in a socially deprived region. Analyses of interviews, observations, and pollinator surveys conducted at the LL confirmed that 14 visiting species were drawn to the site, leading to an approach to regenerative placemaking that combines human health and biodiversity benefits.

Administrative Region of Central, Thessaloniki, Greece, K.I. Maknea, Nikolaos Thymakis, Julia Nerantzia Tzortzi, A. Asănică · Romanian journal of Horticulture · Greece

Experimental research at eight sites in Thessaloniki, Greece, evaluated the impact of aromatic and medicinal plants on the urban microclimate. Sites with these plants showed a 10-15% temperature reduction compared to non-planted areas, and potted plants on simulated balconies led to a 5-10% temperature reduction. However, areas with dense vegetation and water features exhibited increased humidity and limited air circulation, creating adverse thermal comfort conditions.

· · India

The IIHS Campus in Kengeri, India, is located at the intersection of Ramasagara Lake, Sulikere Forest, and an urban settlement, making it a suitable site to examine the interconnectedness between natural systems and the built environment. The campus aims to become an archetype of a safe space for humans and nature, building eco-friendly and climate-resilient structures, and establishing a multidisciplinary living lab. The NATURAL SYSTEMS Box Set documents the campus's water systems, biodiversity, integrated campus agriculture, and related experiments.

Catherine Oliver · Transactions of the Institute of British Geographers · United Kingdom (London)

This paper examines urban chicken-keeping in London, where urban spaces are transformed to accommodate chickens. It argues that the human-imposed design of urban barnyards is often impractical for chickens, leading to lawns being torn up, plants demolished, and vegetable patches consumed. Additionally, chickens are vulnerable to local foxes, highlighting that chickens' behaviors and territoriality often overflow their assigned space, challenging human design intentions.

Rachael Walshe, Lisa Law, Neus Evans · Local Environment · Australia (Cairns)

This paper explores the potential of urban school garden learning experiences in Gimuy/Cairns, Australia, to remediate Environmental Generational Amnesia (EGA). Drawing on interviews with various staff at a Far North Queensland primary school, the study found that school garden experiences foster interaction patterns that combat EGA's symptoms, offering new possibilities for reassembling students into local ecologies and remediating EGA manifestations.

Debra Solomon, Maria Kaïka · Environment and Planning E Nature and Space · Europe

This article explores the extent to which applying embodied, ‘skin in the game’ methods used in infrastructure activism (a contemporary art practice) can expand the toolkit of methods in action research on urban green infrastructure planning. It focuses on two cases of infrastructure activism: the Amsterdam Zuidoost Food Forest (VBAZO) in Amsterdam's South East, and the KRATER project in Ljubljana's city centre. Through discussing these projects, the article explores embodied research practices developed by infrastructure activists to change urban green infrastructures and researcher-actors’ perspectives.

Mostafa Baniasadi, Mohammad Eydipour · Nature Conservation · Iran (Dezful)

This study analyzed citizen preferences and willingness to pay (WTP) for community garden services in Dezful, Iran, using a choice experiment with 170 respondents in autumn 2022. Results showed citizens were willing to pay 4.57 USD per month, valuing cultural services most, followed by provisioning services. Age, being native, education, household expenditure, and awareness of ecosystem services significantly affected WTP.

Isabel Cristina Carvalho, Raquel Luz Sousa · Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) · Global

This chapter advocates for teaching contexts that integrate community art practices, using an informal urban agriculture laboratory as a basis. It proposes pedagogical approaches for Architecture and Urbanism education that leverage action and experimental research to structure living spaces, focusing on proximity, solidarity, intergenerationality, multifunctionality, and sustainability. The aim is to foster social, biophysical, and ecological integration, promote diversity and gender equality, and raise awareness of active citizenship through collaborative co-planning and co-management of plural green urban spaces.

Gustavo Aceti de Avila, Giovanni Vonsowski Guarido, Luis Vitor Fornacciari, Arthur Almenara Rosendo, Fernando Teruhiko Hata, Carlos Alexandre Zanutto, Ednaldo Michellon, William Mário de Carvalho Nunes · Contribuciones a las Ciencias Sociales · Brazil

A participatory experiment using different colored Moericke-type flight interceptor traps was conducted in the Vila Esperança community garden in Maringá, Brazil, to identify the most effective colors for managing pests while being selective towards natural enemies. Dark blue, light blue, and yellow traps showed the best pest/natural enemy ratios (3.19, 3.01, and 1.01, respectively) and captured the most pest insects. These colors are recommended for use as they reduce pest insect populations while avoiding the capture of beneficial insects.

Jon Marín, Teresa Garnatje, Joan Vallès · Sustainability · Spain (Barcelona)

This study investigated whether agro-food supply chains in peri-urban agricultural areas contribute to preserving local biodiversity, using the Baix Llobregat Agrarian Park in Spain as a case study. Analysis of different food retailers revealed variations in plant diversity, origin, and seasonality. Farmers' markets were found to exhibit higher intraspecific diversity, contributing to local agrobiodiversity conservation.

Adriana Rezende Bighi, Regiane Carla Bolzan Carvalho, Camille Rezende Sartorio, Maurício Novaes Souza · Mérida Publishers eBooks · Brazil

This study examines the role of urban gardens in Cachoeiro de Itapemirim, Espírito Santo, Brazil, exploring their economic, social, and environmental dimensions. Urban gardens mitigate environmental degradation, promote biodiversity, and have the potential to generate employment and income opportunities for local residents, while reducing food costs. Through the efficient use of local resources like idle land and organic waste, these gardens yield significant environmental benefits, including reduced pollution and improved air quality, and foster sustainable agricultural practices.

Luiza Vigne Bennedetti, Silvia Ronchi, Maurí­cio Lamano Ferreira, Fabiano Lemes de Oliveira · Sustainability · Brazil (São Paulo)

This study assessed São Paulo's urban agriculture (UA) potential using an Ecosystem Services (ES)-based approach, combining ES spatial mapping and a producer survey at 49 UA sites. Results showed natural habitats and anthropic areas within urbanized land, especially in the south, with high habitat quality scores. Nine ES were identified: food supply, commercialization, income generation, waste mediation, lifecycle maintenance, soil formation, leisure/social, well-being, and education.

L. Garcia Ferreira, M. E. F. CORREIA, M. C. UZEDA · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · Brazil (Rio de Janeiro)

This study evaluated the role of agroecological urban and peri-urban agriculture in preserving native bee communities in the western region of Rio de Janeiro, Brazil. Ten different bee species, nesting in soil and cavities, were identified. Generalized Linear Models (GLMs) indicated that the percentage of agricultural, natural, and built-up land cover was insufficient to explain the species composition regarding their nesting habits. The findings suggest the importance of assessing the quality of agricultural environments, as their association with urban landscapes could support a greater richness of species with diverse nesting habits.

Carmen K. Blubaugh, R. Chesnut, Katherine Hagan · Journal of Applied Ecology · Global

This study investigated how organic composts mediate the effects of plant diversity across trophic levels over two field seasons, conducting 18 experiments in school gardens. Vermicompost strengthened a positive relationship between flower richness and foliar-feeding omnivores, but predators increased with flower richness and were not affected by vermicompost. The net outcomes of vermicompost and plant diversity were neutral for herbivores.

Joshua Garcia, Mariel Mondragon-Becerra, I. Rojas Martínez, Mallika Nocco, Cristina Lazcano · Applied Soil Ecology · United States (California)

A greenhouse trial was conducted in urban agricultural soil from the San Francisco Bay Area, USA, to investigate the effects of organic amendments derived from local municipal waste products on the soil microbiome, tomato productivity, and quality. Liquid food waste hydrolysate and mixed herbivore waste compost increased microbial abundance in the soil compared to mineral fertilizer. While mineral-fertilized tomato plants generally had higher productivity and yields, plants treated with the hydrolysate and mixed herbivore waste compost showed enhanced fruit soluble sugar content (°Brix).

Filippo Oncini, Steffen Hirth, Josephine Mylan, Clare H. Robinson, David Johnson · Urban forestry & urban greening · Global North

This review evaluates the contribution of urban food forestry in the Global North to socio-ecological outcomes across climate change, biodiversity, food production, and relational aspects. The findings demonstrate multifactorial benefits of urban foraging and food forestry, but also identify potential risks and disservices from the literature. The study concludes that upscaling these spaces offers significant gains, requiring systemic changes.

Adriana Flores-Guevara, María de Lourdes Hernández- Rodríguez, María Esther Méndez- Cadena · Revista Investigium IRE Ciencias Sociales y Humanas · Spain (Madrid)

This 2018-2023 study in Madrid, Spain, investigated socio-environmental phenomena in the Community Urban Gardens Network (RedHMad) to understand how they foster sustainable neighborhood development. Researchers conducted open interviews with ten participants, performed participatory observation, and reviewed RedHMad assembly minutes. Findings indicate that community urban gardens generate social cohesion and coexistence, supporting cultural, artistic, experimental, environmental education, and health activities, and facilitating social organization when needed.

Chloé Duffaut, Florence Brondeau, Julien Gasparini · Cybergeo · France (Paris)

A questionnaire survey of 200 individuals in Paris, France, from May 2017 to March 2018, assessed the appreciation and perception of pigeons, rats, and hedgehogs in various urban locations. The study found clear differences in appreciation based on species and perceived usefulness, with rats disliked (2.2/10), hedgehogs liked (7.7/10), and pigeons receiving mixed reactions (4.7/10). Age, gender, education, or survey location were not decisive factors.

Yu Huan, Steffen Nijhuis, Nico Tillie · Urban forestry & urban greening · Global

This systematic literature review analyzed 70 empirical research articles on urban agriculture, ecosystem services, and design research to identify gaps in design knowledge. The review found that while "research for design" is prevalent and offers abundant design knowledge, the infrequent use of "research through design" hinders the transition from implicit to explicit design knowledge, leading to a shortage of operational guidelines. The study proposes a framework for systematic design knowledge of urban agriculture to address these gaps and facilitate knowledge transformation.

Alexandra Zink, Paul J. CaraDonna, Kelly Larsen, Amy M. Iler · Ecosphere · United States (Chicago)

This study investigated how urbanization relates to pollination by growing 240 plants (squash and tomato) across six sites with varying urbanization levels in Chicago, Illinois. For tomatoes, the magnitude of pollen limitation increased with greater impervious surface, indicating more pronounced pollination deficits at highly urbanized sites. For squash, evidence of pollen limitation was found only at the most urban site, with a weak trend of pollen limitation of fruit set (but not seed set) increasing with impervious surface.

Remigio Paradelo, Cecilia Herbón, María Teresa Barral · Journal of Soils and Sediments · Spain

This study examined 64 urban soils in Santiago de Compostela, Spain, across different parent materials and land uses, assessing physical properties including bulk density, porosity, water holding capacity, aggregate stability, water-dispersible clay, permeability, and resistance to penetration in field and laboratory measurements, along with erosion risk estimated via the K factor of the RUSLE. Results show heterogeneous physical properties typical of urban soils; high organic matter and iron content were associated with low bulk density and high aggregate stability. Compaction issues were widespread but land-use dependent: soils under urban agriculture had higher permeability and lower compaction than urban grasslands and forests. High infiltration despite compaction was attributed to abundant coarse fragments and preferential flow paths. Overall erosion risk was found to be low based on K factor values, but the study concludes that sound management remains essential because relief, climate, and human behavior can increase erosion risk at specific points.

Mahsa Tarashkar, Salman Qureshi, Zhifang Wang, Akbar Rahimi · Sustainable Futures · Asia

This study examined factors shaping preferences for front-yard greenhouse urban horticulture in Iran. It found that greenhouse design influences urban horticulture preferences, and that urban dwellers prioritize cultural ecosystem services over regulating and provisioning services when engaging in urban horticulture activities. Anticipated ecosystem services differed among socio-demographic groups, and different greenhouse elements evoked distinct perceptions of ecosystem services, though certain greenhouses were found to improve overall perception of ecosystem services due to strong correlations between different service types.

Richard Morris, Shannon Davis, Gwen‐Aëlle Grelet, Pablo Gregorini · Land · Global

Applying a GIS-based model (ESMAX), this study tests a spatial method called "Agroecology for the City," aimed at maximizing ecosystem services (ES) in outwardly expanding peri-urban development. Agroecological farm system (AFS) parcels of 1 ha and 4 ha were configured within a real-world 200 ha peri-urban residential development to identify arrangements maximizing the supply of three regulating ecosystem services the local community identified as critical, plus multifunctional performance across them. Configurations with AFS parcels interspersed evenly among built-up areas provided the best multifunctionality across the four ecosystem services tested.

Akpınar, Musab Talha, Korkut, Cem · Munich Personal RePEc Archive (Ludwig Maximilian University of Munich) · Global

This chapter surveys how the basic sciences -- physics, chemistry, biology and mathematics -- contribute to Sustainable Smart Cities. It states that physics underlies energy efficiency and structural design, chemistry drives sustainable materials and pollution control, biology supports green space, biodiversity and ecosystem services including urban agriculture, and mathematics/data science enable real-time monitoring and resource allocation, arguing for continued interdisciplinary investment in research and education.

Matthias Winfried Kleespies, Dorian D. Dörge, Norbert Peter, Anna V. Schantz, Ajdin Skaljic, Viktoria Feucht, Anna Lena Burger-Schulz, Paul Wilhelm Dierkes, Sven Klimpel · Biological Invasions · Germany

Surveying more than 2,200 people across nine stakeholder groups in Germany involved with invasive species—hunters and hunting association members, farmers, environmental and conservation organization members, allotment garden club members, animal welfare supporters, divers, zoo employees, regulatory authority administrative staff, and speleologists—this study investigated how these groups perceive invasive species. The number of invasive animal and plant species in Germany was roughly correctly estimated across all groups, but the economic damage they cause was substantially underestimated. Species named were mostly conspicuous ones such as raccoons (Procyon lotor) or Impatiens glandulifera, and while all groups showed notable interest in invasive species and regarded them as an environmental issue, the study found a need for greater education about inconspicuous invasive species and the damage they cause.