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Urban EcologyPatterns, Processes, and Applications$
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Jari Niemelä, Jürgen H. Breuste, Thomas Elmqvist, Glenn Guntenspergen, Philip James, and Nancy E. McIntyre

Print publication date: 2011

Print ISBN-13: 9780199563562

Published to Oxford Scholarship Online: December 2013

DOI: 10.1093/acprof:oso/9780199563562.001.0001

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Water Services in Urban Landscapes

Water Services in Urban Landscapes

Chapter:
(p.219) Chapter 4.4 Water Services in Urban Landscapes
Source:
Urban Ecology
Author(s):

Peter Bridgewater

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199563562.003.0027

Themes that characterise urban wetlands in this century are: an association with human activities, especially development, education, and culture; invasive species management; migratory species feeding and breeding grounds; recognition by international environmental agreements; restored or constructed wetlands; and a role in providing for a focus of sustainability in the urban system. The chapter sets those themes in the context of the emerging paradigm of ecohydrology and the application of the ecosystem approach of the convention on biological diversity. For wetlands, especially in an urban context, understanding the linkage between ecology and hydrology — ecohydrology — is an important new way of thinking. Four key points that define ecohydrology are: understanding that ecosystem change is inevitable, and the role of people in managing change; integrating water and biodiversity science at management relevant spatial and temporal scales; understanding the role of ecosystem services; and defining and understanding the links between green and blue water. The role of blue and green water in an urban setting is also linked with human generated grey and black water, and linkages between these waters result in a range of semi-natural and artificial (or constructed) wetland ecosystems in urban landscapes. Human health in urban areas also depends on having well-functioning and well-managed ecosystems to provide a range of ecosystem services that support both human health, but also the health (functioning) of other ecosystems and their components. The chapter also identifies ten urgently needed research directions.

Keywords:   ecohydrology, constructed wetlands, health, green water, blue water, grey water, ecosystem change, biodiversity

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