Research & reports

Joabson Almeida Freitas Souza, Liza Maria Souza de Andrade · Periódico Técnico e Científico Cidades Verdes · Brazil

This study analyzed the role of Nature-based Solutions (NbS) in revitalizing public spaces in Brazilian peripheral areas through a systematic literature review. Findings indicate that interventions like community gardens and green roofs can reduce heat islands, improve drainage, and strengthen community bonds. The research also identified Brazilian public policy advances, such as the National Policy on Climate Change, supporting NbS integration in urban planning for vulnerable territories.

Iriana Sartor, Giovanna Paccillo · Ciencias Sociales y Religión · Brazil, Argentina

This paper analyzes the everyday practices and attributed meanings of participants in community gardens in Brazil and Argentina. Based on 34 semi-structured interviews conducted in 2021 and 2022, it explores human-nature and human-society relationships, and the role of food sovereignty and agroecology. The study argues that these practices contribute to a shared ethic, reconfiguring relational modes grounded in respect, care, and self-recognition as part of nature.

Kyla D. Schulte, Caleb J. Wilson, Anna Tawril, Mary A. Jamieson · Ecosphere · United States (Michigan)

A three-year study across 10 strawberry farms along a rural-urban gradient in Michigan, USA, characterized bee abundance, diversity, and community composition. The study found that urbanization, measured as impervious surface cover, had no consistent effect on overall bee abundance and diversity. While urbanization differentially influenced specific taxa (Halictini positively in year one, Ceratinini negatively in year three), the overall impact was limited, with wild bees, especially native species, being important pollinators in urban agriculture.

Adriano N. Roberto, Andrés G. Rolhauser, J. Scott MacIvor, Marney E. Isaac · Renewable Agriculture and Food Systems · Canada (Toronto)

This study investigated plant facilitation in rooftop agriculture in Toronto, Canada, testing whether live Sedum could improve bush bean performance on 48 extensive green roof (EGR) modules under high and low watering regimes. Water availability had a greater influence on bean performance than planting design, with beans grown with artificial Sedum under high watering showing the highest yield, while performance declined significantly under low water, particularly with live Sedum. Contrary to hypotheses, live Sedum did not consistently facilitate bean performance, suggesting potential competitive interactions may have outweighed any stress-ameliorating effects. These findings indicate water management is the main management variable for crops on EGRs.

María del Rosario Rivera Landa, Rodolfo J. Cancino López, Miguel Aragón-Sánchez, Agustín Aragón‐García, Arturo Huerta de la Peña, Atilano Contreras‐Ramos · ACTA ZOOLÓGICA MEXICANA (N S ) · Mexico (Puebla)

This study aimed to identify a Chrysopidae species present in an urban garden plot in Puebla State, Mexico, and describe its larval stages. Collections were made in the study area, followed by laboratory rearing, identification, and description of the larval stages of Chrysoperla exotera (Navás, 1914). This species is reported for the first time in Puebla State, and an update to Tauber (1974)'s identification key for Chrysoperla larval stages was performed.

Marcelo Silveira Badejo, Calebe de Hebrom Livistom da Silva, Joana Josiane Andriotte Oliveira Lima Nyland, Afonso Henrique da Silva Júnior, Juliano da Rosa Justim, Cassiano Ranzan · OBSERVATÓRIO DE LA ECONOMÍA LATINOAMERICANA · Brazil

In Santo Antônio da Patrulha, Brazil, a tree inventory was conducted in the Cidade Alta and Centro neighborhoods to support an urban afforestation project. The survey revealed a lack of trees in 5 out of 41 streets in Cidade Alta and 2 out of 28 streets in Centro, with high rates of unidentified trees (53% and 12% respectively). Furthermore, pedagogical practices tested in schools and universities raised challenges regarding the management of flowerbeds in urban areas.

Sara-Charlotte Cayen, Kesnamelie-Ann Outha, Pierre Paul Audate · International Journal of Environmental Health Research · North America

This narrative review synthesized the ecosystem services of urban food forests and their contributions to urban health and food sustainability in North American cities. Based on 13 studies published between 2018 and 2023, it identified that food forests provide services such as sustainable food production and climate regulation. However, their implementation faces challenges including public space governance, maintenance costs, regulatory barriers, and ecological risks like invasive species.

Rachel A. Kendall, John A Francis, Mathew R. Vankoughnett · Native Plants Journal · Canada

This study assessed sweetgrass germination and propagation for Mi’kmaq community gardens, testing seed storage, additives, dormancy methods, and seedling outplanting. Removing seed coverings and soaking seeds increased germination success up to 46%, while cold storage, biological additives, and growth enhancers showed no improvement. Organic fertilizer (7-5-0) enhanced rhizome development, synthetic fertilizer (20-20-20) led to taller leaves, and both increased leaf count.

Belma Soto-Fernández, Lurys Bourdett-Stanziola · Asian Journal of Agricultural and Horticultural Research · Latin America

A documentary review on the importance of urban gardening in Latin America revealed that urban gardening, when approached through the lens of agrobiodiversity, has become a key strategy for safe food production and environmental sustainability. However, it was found that several Latin American countries lack clear and established laws to regulate this activity. Preliminary evidence of rotavirus was detected in fresh vegetables from an urban garden in Panama, indicating that urban gardens can become infection foci capable of causing diseases of public health and veterinary importance.

Vázquez-García, Amparo, Elizondo, Cecilia · AgEcon Search (University of Minnesota, USA) · Mexico

Home gardens in San Felipe Ecatepec, San Cristóbal de Las Casas, Mexico, are systems with diverse plant species and areas ranging from 600m² to 2500m². This study aimed to identify forms of resistance against neoliberal policies and urban sprawl, finding that home gardens provide healthy, fresh food, create useful spaces, and preserve agrobiodiversity. These gardens are considered spaces of resistance based on traditional knowledge, helping to bolster food sovereignty. The research was conducted during the two years of the COVID-19 pandemic.

Riegel, Cameron · Maryland Shared Open Access Repository (USMAI Consortium) · United States (Baltimore)

This study investigated the motivations driving voluntary participation in urban community pollinator garden stewardship among residents of Baltimore, Maryland, USA. Six semi-structured interviews were conducted with volunteer gardeners and analyzed using a qualitative case study approach. Analysis revealed that gardeners are primarily motivated by environmental concerns, specifically an interest in and desire to give back to birds, an interest in trees and native plants, and a desire to interact with the urban natural environment. Social factors also shaped motivations but proved less influential than environmental factors in driving participation among most gardeners.

Nicholas Sookhan, Thomas M. Onuferko, J. Scott MacIvor · Ecological Entomology · United States

This study measured pollination services across gradients of within-city urbanization and urban green space fragmentation at 10 community gardens in the United States, deploying four native indicator (phytometer) plant species and measuring visitor rate and alpha-diversity in relation to each species' reproductive outcomes. Although the researchers predicted a negative effect of urbanization, they found limited evidence of decline; contrary to expectation, Lobelia siphilitica showed increased visitor alpha-diversity and higher seed mass in more urbanized gardens, fragmentation effects were mixed -- edge density correlated positively with one species and negatively with another -- and local garden floral richness showed no influence, likely because richness was uniformly high across gardens.

Camila Urbina Lavajos, Oscar Vargas Chozo · Devenir - Revista de estudios sobre patrimonio edificado · Peru

A qualitative, descriptive study of the Tumino ravine in Moyobamba, Peru, examined the degradation of its evolving cultural landscape caused by inappropriate land use and informal settlement. Results showed 41% of the ravine area under conservation while another 41% faced unsustainable uses such as dumping and drainage discharge, with landscape fragmentation found to be affecting ecological connectivity and biodiversity. In response, the study proposes a system of ecological patches including urban gardens, green corridors, paths, boardwalks, viewpoints, wetlands and urban lagoons.

Brenda B. Lin, Peter Bichier, Heidi Liere, Shalene Jha, Edith Gonzalez, Stacy M. Philpott · Frontiers in Sustainable Food Systems · United States (California)

An online survey across 21 community gardens in Central California asked gardeners about their aesthetic and management preferences using paired images representing common garden styles, with open-ended explanations. For the first image pair, 85% of respondents preferred a tidy and organized image, citing easier movement, better plot access and weed control from managed pathways, a preference correlated with participation in the University of California's Master Gardener program; for the second pair, preferences were not strong and 20% of gardeners declined to choose because they valued aspects of both, food-producing crops and pollinator-supporting flowering plants.

Azucena Lucatero, Noah R. Smith, Peter Bichier, Heidi Liere, Stacy M. Philpott · Ecosphere · United States (California)

Using ecological networks, this study quantified interactions between herbivorous insects and their parasitoids across 22 urban community gardens on the Central Coast of California, relating host abundance, parasitism rates, and network structure to local garden management and surrounding landscape composition. It found that both local management and landscape composition influenced parasitism, while only local factors affected host abundance and network structure, suggesting local garden management decisions may shift host–parasitoid network structure with variable outcomes for biological pest control.

Adriana de Paula Cavalcante Fraga, Ana Moraes Coelho, Jéssica Castro Chryssafidis, José Geraldo Barreto Monteiro de Andrade, Maíra Bombachini Silva, Maria Luiza Sevilha Seraphico de Assis Carvalho, Mariana Nicolletti, Nathan Debortoli, Samuel Santos de Souza Pinto · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · Brazil (Manaus)

A case study of urban and peri-urban agriculture in Manaus, Brazil, aimed to identify and characterize the benefits these agricultural initiatives provide to the territory. Using a hybrid methodology that combined biophysical modeling with listening to the voices of experienced protagonists, the study identified the significant potential of urban and peri-urban agriculture to contribute to city development. This research revealed the potential for urban agriculture to mitigate or solve typical urban problems.

Pierric Calenge, Maie Gérardot · Métropolitiques · United States (Cleveland)

The work by Max Rousseau and Vincent Béal illuminates the ambiguities of a policy that organizes urban decline and racial segregation in Cleveland. This policy promotes urban degrowth and racial segregation, balancing algorithmic management and urban greening. The study focuses on the Rust Belt region, which experiences de-urbanization marked by the subprime crisis, racism, and segregation.

Lindsay K. Campbell, Chris Fremantle, David Maddox, Erika S. Svendsen, Sarah Hines, Mary Mattingly, Matthew López-Jensen, Nikki Lindt, Liza Paqueo, Michelle Johnson · Landscape Research · United States (New York City)

This paper explores four case studies from the Urban Field Station Collaborative Arts Program (UFS Arts) in New York City, United States, from 2016 to the present. It examines how artists collaborating with scientists and land managers foster new relationships with urban nature and inform landscape decisions. The examples include projects using image, sound, a floating food forest, and an exhibition mapping civic environmental practices, demonstrating how transdisciplinary approaches can transform management practices and landscape decisions.

Letícia Pereira Cardoso, Luyane Castro de Sousa, Millena de Oliveira Martins, Sarah Luíza Ribeiro Avelino, Wédila Souza Aires Jácome, Otávio Cabral Neto · Revista Multidisciplinar do Nordeste Mineiro · Brazil (Palmas-Tocantins)

This study focused on biodynamic strategies applied in urban gardens in Palmas-Tocantins, Brazil. In addition to a literature review, practical methods included technical visits and an exclusive interview with a producer-researcher, investigating cultivation methods, organic composting, water efficiency, natural pest control, the use of beneficial fungi, and organic fertilizers. The study aims to contribute to sustainable development and innovation in organic food production in small urban spaces.

Andréa Nunes Moreira, Camila Torres Valgueiro Ferraz, Doyglas Rafael Sales Marques, Jarbas Florentino de Carvalho, Jane Oliveira Perez · Revista Semiárido De Visu · Brazil (Petrolina)

This study aimed to present efficient and low-cost methods for preserving ladybugs, excellent predators of agricultural pests, to horticulturists in Petrolina, Brazil. "Ladybug Preservation Kits" containing seed mixes and explanatory materials were distributed to 10 community gardens, and "Knowing Ladybugs Kits" with ladybug specimens were also distributed to 2 gardens. The survey identified 17 community gardens in Petrolina, and the activities received excellent receptivity, contributing to knowledge building about natural enemies.

Marina Torreblanca, Flavio Choquehuanca, Javier Martínez, Martinez Alfaro · Land · Peru (Arequipa)

This research developed indicators for Cultural Ecosystem Services (CESs) in peri-urban agricultural and natural areas (PANAs), using Arequipa, Peru, as a case study. A systematic review combined with a participatory workshop identified 230 indicators across 19 subclassifications, with 115 indicators across 13 subclassifications assessed for impact level. This study enables the selection of practical indicators to facilitate PANA landscape management and support decision-making for interventions.

Han Li, Jeremy A. White · Sustainability · United States

This study assessed bat activity patterns at Glacier Creek Preserve in Omaha, Nebraska, USA, from 2018 to 2020 using acoustic monitoring to determine its conservation value for bats. Nine species, including the endangered Myotis septentrionalis, were recorded, with edge habitats showing higher overall and foraging activities for several species compared to open habitats. The preserve provides roosts, commuting corridors, and foraging grounds for different bat species.

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.

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.