Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
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Cropping Practices and Their Drivers in Various Cropping Systems in Peri-urban Areas of Ouagadougou, Burkina Faso
2019Delphine Bernadette Ouédraogo, Delwendé Innocent Kiba, Zacharia Gnankambary, Sheick K. Sangaré, Diakouba Sirima, Hassan Bismarck Nacro, Michel Papaoba Sédogo · Journal of Agricultural Science · Burkina Faso (Ouagadougou)
This study investigated cropping practices and their drivers in 133 peri-urban farms near Ouagadougou, Burkina Faso. Soil sample analysis revealed that monoculture led to low soil organic carbon, while polyculture led to low soil available potassium. The socio-economic conditions of the farms explained up to 60% of the variability in cropping practices.
Environmental trade-offsPeri-urban agricultureEconomicsOrganic cycleFood sovereignty & justiceImpact of Urban Agriculture on the Species Distribution and Insecticide Resistance Profile of <i>Anopheles gambiae s.s.</i> and <i>Anopheles coluzzii</i> in Accra Metropolis, Ghana
2018Joseph Chabi, Miracle C. Eziefule, Rebecca Pwalia, Joannitta Joannides, Dorothy Obuobi, Godwin Amlalo, Charlotte Addae, Alidu Iddrisu, Dominic Acquah-Baidoo, Samuel Akporh, Sampson Gbagba, Kwadwo K. Frempong, Melinda P. Hadi, Helen Pates Jamet, Samuel Dadzie · Advances in Entomology · Ghana
This study in Accra Metropolis, Ghana, compared Anopheles gambiae s.l. species composition and insecticide resistance between two vegetable-growing and two non-vegetable growing areas. All A. gambiae s.l. populations tested were resistant to five insecticides, with lower mortalities observed in vegetable-growing areas (e.g., 2.6% and 12.5% for deltamethrin) compared to non-vegetable areas (36.2% and 38.9%). Anopheles gambiae s.s. and Anopheles coluzzii were dominant in vegetable-growing areas. The findings indicate that urban agriculture contributes to the development of insecticide resistance, which needs consideration in vector control strategies.
Environmental trade-offsHealthBiodiversityUrban–rural linkageThe fate of compost-derived phosphorus in urban gardens
2018Gaston E. Small, Paliza Shrestha, Adam D. Kay · International Journal of Design & Nature and Ecodynamics · Global
Dissolved phosphorus (PO4 3-) and nitrogen (NO3- & NH4+) losses in leachate from experimental raised-bed garden plots were measured. Plots receiving cow manure compost showed high PO4 3- concentrations (5-11 mg/L), while municipal organics compost plots had concentrations an order of magnitude lower (0.5-1.2 mg/L), and no-compost plots had 0.3 mg/L. Phosphorus lost through leachate and harvest accounted for only 1-10% of total applied phosphorus, indicating soil build-up was the dominant fate. This study illustrates a potential trade-off in urban agriculture between crop production and efficient phosphorus recycling from urban food waste.
Environmental trade-offsCompostOrganic cycleUrban–rural linkageImplication of Urban and Peri-Urban Agricultural Wastewater Irrigation to Malaria Transmission in Kumasi
2018Amina Abubakari, John Asiedu Larbi, Robert Clement Abaidoo · Journal of Tropical Diseases · Ghana (Kumasi)
A 2018 study in Kumasi, Ghana, assessed 7017 health facility data from 77 communities to investigate malaria transmission in areas with wastewater irrigation. It found approximately 3698 malaria cases in wastewater irrigation areas and 3319 in areas without, with a P-value of 0.1914, indicating no statistically significant difference. However, Anopheles spp. mosquito densities were high in furrows, followed by ponds, suggesting that anthropogenic activities related to urbanization and wastewater irrigation may contribute to malaria transmission.
Environmental trade-offsHealthPeri-urban agricultureHorizontal flows of nitrogen, potassium, and carbon in urban vegetables gardens of Bobo Dioulasso, Burkina Faso
2018Désiré Jean‐Pascal Lompo, Emmanuel Compaoré, Michel Papaoba Sédogo, Martina Melapie, Charles Bielders, Eva Schlecht, Andreas Buerkert · Nutrient Cycling in Agroecosystems · Burkina Faso (Bobo Dioulasso)
This study investigated nutrient management in six urban vegetable gardens in Bobo Dioulasso, Burkina Faso, quantifying nitrogen (N), potassium (K), and carbon (C) fluxes and balances. Inputs of N and K significantly exceeded recommended amounts, leading to substantial horizontal annual surpluses of 1013 kg N ha−1, 879 kg K ha−1, and 25 t C ha−1. While total balances for N and K were positive, the total balance for C was negative, indicating an environmental tradeoff due to excessive nutrient input.
Environmental trade-offsOrganic cycleClimate changeUrban–rural linkageThe monitoring of soils on the land areas as information support for the register of soil resources at the local level
2018D.V. Belobrova, Д. А. Шаповалов · Dokuchaev Soil Bulletin · Russia
This study conducted large-scale (1:5000) soil mapping of garden non-commercial partnerships in the Meshchera lowland of Noginsk district, Moscow region. Investigations revealed that initial soils underwent significant transformation since their creation, with soddy podzolic and boggy soils changing into agro-soddy podzolic soils and agrozems due to intensive development and fertilizer use. While these changes reflect increased productivity and quality of allotment soils, the transformed soils are characterized by neutral pH and high/medium mobile phosphorus content, but are poor in exchangeable potassium compared to natural soil profiles.
Environmental trade-offsOrganic cycleCompostCommunityThe Impact of Urbanization on the Vegetation of Yaounde, (Cameroon)
2017Clement Anguh Nkwemoh, Mesmin Tchindjang, Roland Ngwatung Afungang · International Journal of Innovative Research and Development · Cameroon (Yaounde)
A study in Yaounde, Cameroon, investigated the impact of rapid urban expansion on vegetation cover using maps, images, questionnaires, and interviews. The findings revealed a significant depletion of flora due to settlement expansion. Forest degradation was attributed to the demand for construction materials, fuelwood, woodworking, and the need for space for urban agriculture, among other factors.
Environmental trade-offsBiodiversityUrban–rural linkageConcluding remarks
2016Runrid Fox-Kämper · · Global
This book provides insights and examples of how urban space is negotiated, describing urban gardens as "lived places" where social relations, meanings, and a sense of place are developed. To trigger social benefits, it is essential that these sites fulfill more functions than just food growing and leisure. Horticultural practices, such as using pesticides or fertilizers, have a strong influence on the ecological impact of urban gardening; although awareness among gardeners has increased due to training programs in recent decades, this impact persists.
Environmental trade-offsCommunityOrganic cyclePolicyХарактер угодий водосбора малых мелководных озер и факторы уязвимости их экосистем
2016Alexandra Rizhinashvili · Digital Library of the Belarusian State University (Belarusian State University) · Global
This study analyzed the key limnetic parameters of four small shallow lakes: two located in allotment garden areas and two in forest-covered areas. It found that lakes with largely unexploited catchments contain a "hidden" source of nutrient load, primarily phosphates. Furthermore, lakes with catchments occupied by allotment gardens exhibited intensive overgrowth by floating vegetation.
Environmental trade-offsCommunityBiodiversityThe Bees among Us: Modelling Occupancy of Solitary Bees
2016J. Scott MacIvor, Laurence Packer · PLoS ONE · Global
This study modeled the occupancy probability of six solitary bee species using nest boxes set along an urbanization gradient over three consecutive years. Native M. pugnata showed decreased occupancy with increasing building footprint, and a similar but not significant pattern was found for native O. pumila. Conversely, introduced M. rotundata and M. centuncularis, along with native M. campanulae, exhibited increased occupancy with rising urbanization.
Environmental trade-offsBiodiversityPollinatorsClimate changeSustainable Development for People or Profit?
2015Eric Weaver · Suburban Sustainability · Global
This review details the relationship between key planetary systems and the many adverse impacts of industrial agriculture, drawing from top-tier journals. Research indicates that industrial agriculture is a major force pushing environmental limits, with multinational corporations continuing to influence national environmental regulations. Current literature debates whether political systems can institute sustainable solutions, suggesting that grassroots efforts may be the most viable solution to displace the industrial agriculture model.
Environmental trade-offsClimate changeFood sovereignty & justiceEconomicsRevealing the Impacts of Climate Change on Peri-Urban Agriculture and Vegetation Cover in Dar es Salaam City, Tanzania
2015Leonia John Raphael · Tanzania Journal for Population studies and Development · Tanzania (Dar es Salaam)
A 2015 study in Dar es Salaam, Tanzania, found that extreme climatic changes, including rainfall and temperature, have adversely affected peri-urban agricultural productivity and vegetation cover. Excessive rains lead to the destruction of urban gardens, vegetation, property, and loss of livelihoods for urban dwellers, 87% of whom are rural migrants. This highlights significant risks for urban communities dependent on land resources in rapidly growing cities.
Environmental trade-offsPeri-urban agricultureClimate changeFood sovereignty & justiceGreening and “un”greening Adelaide, South Australia
2015Guy M. Robinson, Zhiling Liu · AIMS environmental science · Australia
This paper examines the contradictions between greening and "ungreening" in Adelaide, South Australia, focusing on the city's Park Lands and urban sprawl. It argues that urban sprawl, including recent development on prime farmland, has been antithetical to biodiversity maintenance and greening principles, reducing sustainability capacity. The paper identifies problems such as conflict between biodiversity and protecting residents in bushfire risk areas, stemming from a relaxed attitude towards low-density expansion.
Environmental trade-offsUrban–rural linkagePolicyBiodiversityURBAN AGRICULTURE: A STRATEGY TO SUSTAIN URBAN ENVIRONMENT (CASE STUDY: QAZVIN CITY)
2015Marzieh Rezaei Qaleh, Hossein Medi, Mahdi Sheybani · Cumhuriyet Science Journal · Iran (Qazvin City)
This study investigated the role of urban agriculture in sustaining the urban environment, using Qazvin City, Iran, as a case study. Qazvin City, historically surrounded by traditional gardens that created a favorable urban environment, is now experiencing the destruction of these garden environments due to development processes, posing a risk of breaking the chain of environmental sustainability. The research, based on content analysis through observation and document study, proposed solutions considering environmental concerns, including preserving old irrigation methods, restoring native plant species, and focusing on existing water resources.
Environmental trade-offsUrban–rural linkageClimate changePolicyUrban food systems
2015J.S.C. Wiskerke · · Global
This chapter focuses on urban food supplies and the challenges of managing waste flows from urban households and markets in developing countries. Large amounts of municipal solid waste, human excreta, and wastewater are produced, most of which end up in non-engineered landfills or pollute the urban environment. It is noted that these wastes pollute the urban environment, especially in low-income countries with less developed sanitation infrastructure.
Environmental trade-offsOrganic cycleCompostFood lossHealthUrban Land Use Decouples Plant-Herbivore-Parasitoid Interactions at Multiple Spatial Scales
2014Amanda E. Nelson, Andrew A. Forbes · PLoS ONE · Global
This study sampled two plant-herbivore-parasitoid systems across 250 sites in a 360 km2 urban/agricultural landscape to investigate the impact of human development on trophic interactions. It found that herbivorous insect densities were decoupled from host tree densities in urban landcover types at several spatial scales. Furthermore, a parasitoid species was absent from all urban/suburban landcover in one system, even where its herbivore host was common, indicating that human land use patterns limit specialist insect distributions due to dispersal constraints.
Environmental trade-offsBiodiversityPollinatorsUrban–rural linkageEcological Integrity of a Peri-Urban River System, Chiraura River in Zimbabwe
2013Beaven Utete · Journal of Water Resources and Ocean Science · Zimbabwe
The ecological integrity of the peri-urban Chiraura River system in Zimbabwe was assessed through multivariate analysis of physicochemical parameters and the resident macroinvertebrate community. Monthly collections were conducted over five months from November 2011 to March 2012 at six sites, recording 1209 macroinvertebrates. Unsustainable anthropogenic activities, including industrial, domestic, and urban agricultural activities, were found to affect the water quality of the Chiraura River through run-off and increased effluent.
Environmental trade-offsClimate changeBiodiversityUrban Agriculture Production Mode 3: Intensive Production of Vegetables
2013Danfeng Huang · Journal of Changjiang Vegetables · Global
This paper discussed the importance of intensive vegetable production in urban agriculture, highlighting its role in guaranteeing the supply, quality, and safety of fresh vegetables. It summarized key aspects of intensive production, including industrialized seedling production, facility production, efficient cultivation, postharvest processing, and commercial management, but also presented environmental problems and restricting factors in the development of intensive vegetable production.
Environmental trade-offsEconomicsClimate changeFood sovereignty & justiceImpact of illegal urban agricultural activities on bio-diversity of Emakhandeni high density suburb of Bulawayo, Zimbabwe
2013Patrick F. Banga · · Zimbabwe
Unsanctioned urban agricultural activities in Emakhandeni High Density Suburb of Bulawayo, Zimbabwe, negatively impact biodiversity. Researchers interviewed 100 people and conducted field visits, finding that the majority of cultivators operate outside existing laws and guidelines. This leads to progressive land degradation, massive deforestation, soil erosion, dried wetlands, lowered water table, and compromised groundwater quality due to pesticides and inorganic fertilizers.
Environmental trade-offsCommunityBiodiversityPolicyClimate changeKnowledge assessment on the effects of climate change due to keeping livestock in urban and peri-urban areas of Dar es Salaam, Tanzania
2013Shogo Mlozi · International NGO Journal · Tanzania
This paper assesses the knowledge of livestock keepers in Dar es Salaam, Tanzania, regarding the climate change effects of their activities. Over two-thirds of respondents did not believe solid waste, liquid waste, and pollution from livestock would affect future climate risks. However, they did perceive chemical pollution and land degradation from urban and peri-urban agriculture (UPA) livestock keeping as having climate change effects.
Environmental trade-offsClimate changePeri-urban agricultureFood educationOrganic cycleImplementing a Rainwater Sustainable Control in Sahel-Feedback from "Niayes" Zone of Dakar
2012Sylvestre Dasylva · Journal of environmental science & engineering · Senegal (Dakar)
This paper discusses rainwater management in the "niayes" zone of Dakar, Senegal. This area is characterized by agricultural depressions with typically high groundwater levels, but a recent drop has turned some into runoff-gathering sites, used for urban agriculture among other services. However, two acute problems are observed: hydrological drying due to insufficient rainwater refill and urbanization of these bottom-lands. Furthermore, decreasing pluviometry exacerbates nuisances like floods and malaria.
Environmental trade-offsClimate changeUrban–rural linkagePolicyPeri-urban agricultureHorizontal matter fluxes and leaching losses in urban and peri‐urban agriculture of Kabul, Afghanistan
2011Zikrullah Safi, Martina Předotová, Eva Schlecht, Andreas Buerkert · Journal of Plant Nutrition and Soil Science · Afghanistan (Kabul)
A two-year study in Kabul, Afghanistan, measured horizontal flows of C, N, P, and K, and leaching losses of N and P in 21 vegetable gardens, 18 cereal fields, and vineyards. The findings suggest that soils in extensive cereal fields are at risk of N and K depletion, vegetable gardens face K depletion, and vineyards may be oversupplied with nutrients, potentially contributing to groundwater contamination. These results merit verification.
Environmental trade-offsOrganic cyclePeri-urban agricultureAnopheles gambiae distribution and insecticide resistance in the cities of Douala and Yaoundé (Cameroon): influence of urban agriculture and pollution
2011Christophe Antonio‐Nkondjio, Billy Tene‐Fossog, Cyrille Ndo, Benjamin Menze Djantio, Serge Zebaze Togouet, Parfait Awono‐Ambene, Carlo Costantini, Charles S. Wondji, Hilary Ranson · Malaria Journal · Cameroon
This study assessed the influence of urban pollution and agriculture on malaria vector distribution and insecticide susceptibility in Douala and Yaoundé, Cameroon, from October 2009 to December 2010. Researchers sampled 1,546 anopheline larval breeding sites and analyzed water parameters. Findings showed mosquitoes from cultivated urban areas exhibited the highest insecticide resistance levels, with urban agriculture, rather than pollution, suggested as the major factor driving resistance.
Environmental trade-offsHealthClimate changeUrban–rural linkageSpatial dispersion and characterisation of mosquito breeding habitats in urban vegetable-production areas of Abidjan, Côte d'Ivoire
2010Barbara Matthys, Benjamin G. Koudou, Eliézer K. N’Goran, Penelope Vounatsou, Laura Gosoniu, Moussa Koné, G. Gissé, Jürg Utzinger · Annals of Tropical Medicine and Parasitology · Côte d'Ivoire (Abidjan)
Two surveys were conducted in market gardens of Abidjan, Côte d'Ivoire, during the rainy and dry seasons to identify mosquito breeding habitats. The study found that urban agriculture areas may lead to higher densities of mosquito breeding sites, with "agricultural trenches" between seedbeds being the most likely sites to be positive for Anopheles larvae and mosquito pupae.
Environmental trade-offsHealthUrban–rural linkageBumble Bees (Bombus spp) along a Gradient of Increasing Urbanization
2009Karin Ahrné, Jan Bengtsson, Thomas Elmqvist · PLoS ONE · Sweden (Stockholm)
This study investigated bumble bees in allotment gardens along an urbanization gradient from inner Stockholm to rural areas. Findings showed that bumble bee diversity decreased with increasing urbanization, from approximately eight species in rural areas to five to six species in urban allotment gardens. Higher variability in the abundance of certain species in the most urban areas suggested a potentially weaker reliability of the pollination ecosystem service in areas strongly influenced by human activity.
Environmental trade-offsBiodiversityPollinatorsCommunityPeri-urban agriculture