Ecological Interactions in Urban Agroecosystems
Summary
Urban agroecosystems comprise gardens, allotments and small‐scale farms embedded within the built environment. These systems host complex webs of interactions among crops, weeds, pests, natural enemies, pollinators and other wildlife. Habitat heterogeneity at local and landscape scales shapes top-down control by predators and parasitoids, while bottom-up effects arise from soil quality, plant diversity and microclimate. Human management choices—in particular vegetation cover, crop composition and aesthetic preferences—influence the abundance, richness and functional traits of arthropods and vertebrates. Mutualistic interactions such as pollination often occur alongside antagonistic ones such as herbivory and parasitism, with cascading effects on yield and ecosystem resilience. Recent work emphasises the role of network structure, habitat complexity and social context in determining service delivery. By integrating conservation biological control with habitat design, urban agroecosystems can enhance biodiversity, sustain crop production and contribute to urban food security.
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Ecological Interactions in Urban Agroecosystems publication trend
The graph below shows the total number of articles in ecological interactions in urban agroecosystems across all publications each year (not limited to Nature Index journals).
Technical terms
Urban agroecosystem: A food-producing system situated within a city or town, including gardens, allotments and small farms.
Conservation biological control: The practice of enhancing habitat or conditions to support natural enemies of pests.
Habitat complexity: Structural variety in vegetation or physical elements that influences species presence, abundance and interactions.
Ecological network: A representation of interactions among species, such as predator–prey or host–parasitoid links, used to assess community structure and function.
Natural enemy: An organism, such as a predator, parasitoid or pathogen, that attacks and reduces pest populations.
References
- Local and Landscape Effects to Biological Controls in Urban Agriculture—A Review. Insects (2019).
- Local Habitat Complexity and Its Effects on Herbivores and Predators in Urban Agroecosystems. Insects (2024).
- Shifts in host–parasitoid networks across community garden management and urban landscape gradients. Ecosphere (2024).
- Vertebrates and flying insects provide biocontrol services to Australian urban food gardens. BioControl (2024).
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