Cities are not just concrete jungles; they are complex, living ecological systems.

Nature · Published 3 October 2026 Swipe more like this →

In short: Urban ecology examines how organisms thrive within human-dominated landscapes. From the cooling power of upwind forests to the unintended biological invasions triggered by development, our cities are active ecosystems. Understanding these processes is essential for sustainability as the world population increasingly concentrates in dense, expanding urban centers.

Urban ecology is the scientific study of how living organisms interact with each other and their surroundings within environments defined by high-density buildings and paved surfaces. While traditional ecology long focused on pristine natural settings, the field began to formalize in the 1970s. Early foundational works, such as Herbert Sukopp’s 1979 research on Berlin’s wastelands, helped establish urban spaces as distinct, legitimate subjects of ecological inquiry.

The discipline has since evolved into a global, multifaceted field. In Europe, research has traditionally emphasized urban biota, while North American approaches often integrate social sciences with ecosystem fluxes. Latin American studies frequently focus on how human activity impacts biodiversity. This complexity is vital because more than half of the global population currently resides in cities, a figure projected to reach two-thirds within the next four decades. As cities expand, they create unique pressures, such as increased biological invasions, where developed areas often host higher levels of non-native vertebrate species.

Modern urban ecology employs advanced tools, including remote sensing and chemical analysis, to solve practical challenges. For instance, researchers have used terrain-driven cold-air advection and upwind greening to reduce urban heat stress, achieving temperature drops of approximately 0.4 °C. Other studies highlight the socioeconomic dimensions of ecology, such as the inequity of green infrastructure in informal settlements. By viewing cities and their surrounding rural areas as integrated regions, urban ecology seeks to balance human culture with the natural environment, proving that even the most artificial landscapes are governed by biological and physical processes.

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