By marina Alberti

This groundbreaking paintings is an test at offering a conceptual framework to synthesize city and ecological dynamics right into a universal framework. the best problem for city ecologists within the following few a long time is to appreciate the position people play in city ecosystems. the improvement of an built-in city ecological procedure is essential to boost ecological examine and to aid planners and bosses resolve advanced city environmental matters. This e-book is a tremendous breakthrough.

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Extra info for Advances in Urban Ecology: Integrating Humans and Ecological Processes in Urban Ecosystems

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Krugman (1998) suggests that the interaction among agents can be subject to bifurcations leading to sudden changes and qualitatively different urban structures. However, none of these explanations explicitly address the interactions between human and natural systems and the potential system shifts driven by existing thresholds in such systems. 32 Advances in Urban Ecology Heterogeneous agents Cities are built by a wide variety of agents: households, businesses, developers, financial agencies, governments, and services.

While we generally understand the effects that urban development may have on ecological processes, we have little consensus on the details: Does increase in urban development have a linear effect on ecological processes? Or can we detect thresholds, and/or differentiate among types of development patterns? Scholars generally agree that changes in land cover associated with urbanization affect biotic diversity, primary productivity, soil quality, runoff, and sedimentation rates. By altering the availability of nutrients and water, urbanization also affects populations, communities, and ecosystem dynamics.

Marzluff and I hypothesize that resilience in urban ecosystems is defined by the system’s ability to maintain human and ecosystem functions simultaneously. In urbanizing regions, ecological and human functions are interdependent. As urbanization increases, the system moves away from the natural vegetation attractor toward the sprawl attractor and beyond, until increasingly urbanized ecological systems become unable to support the human population. As we replace ecological functions with human functions in urbanizing regions, the processes supporting the ecosystem may reach a threshold and drive the system to collapse.

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