Evolving conceptual frameworks for urban ecology view cities as heterogeneous, dynamic landscapes and as complex, adaptive, socioecological systems, in which the delivery of ecosystem services links society and ecosystems at multiple scales. ... The changes in chemical environment, exposure to pollutants, simplified geomorphic structure, and altered hydrographs of urban streams combine to create an urban stream syndrome of low biotic diversity, high nutrient concentrations, reduced nutrient retention efficiency, and often elevated primary production. ... Countering the urban stream syndrome may require abandonment of the idea of a restored stream in favor of a designed ecosystem. ... Reconciliation ecology, where habitats greatly altered for human use are designed, spatially arranged, and managed to maximize biodiversity while providing economic benefits and ecosystem services, offers great promise that ecologists will be increasingly called upon to help design and manage new cities and reconstruct older ones. - Nature, 2008
Posted on: Tue, 11 Mar 2014 03:19:34 +0000
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