There are 2.4 billion people without improved sanitation and another 2.1 billion with inadequate sanitation (i.e. wastewater drains directly into surface waters), and despite improvements over the past decades, the unsafe management of fecal waste and wastewater continues to present a major risk to public health and the environment (UN, 2016). There is growing interest in low cost sanitation solutions which harness natural systems. However, it can be difficult for wastewater utility managers to understand under what conditions such nature-based solutions (NBS) might be applicable and how best to combine traditional infrastructure, for example an activated sludge treatment plant, with an NBS such as treatment wetlands. There is increasing scientific evidence that treatment systems with designs inspired by nature are highly efficient treatment technologies. The cost-effective design and implementation of ecosystems in wastewater treatment is something that exists and has the potential to be further promoted globally as both a sustainable and practical solution. This book serves as a compilation of technical references, case examples and guidance for applying nature-based solutions for treatment of domestic wastewater, and enables a wide variety of stakeholders to understand the design parameters, removal efficiencies, costs, co-benefits for both people and nature and trade-offs for consideration in their local context. Examples through case studies are from across the globe and provide practical insights into the variety of potentially applicable solutions.

This open access book brings together research findings and experiences from science, policy and practice to highlight and debate the importance of nature-based solutions to climate change adaptation in urban areas. Emphasis is given to the potential of nature-based approaches to create multiple-benefits for society. The expert contributions present recommendations for creating synergies between ongoing policy processes, scientific programmes and practical implementation of climate change and nature conservation measures in global urban areas. Except where otherwise noted, this book is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

'Economic losses from natural disasters totaled $92 billion in 2015.' Such statements, all too commonplace, assess the severity of disasters by no other measure than the damage inflicted on buildings, infrastructure, and agricultural production. But $1 in losses does not mean the same thing to a rich person that it does to a poor person; the gravity of a $92 billion loss depends on who experiences it. By focusing on aggregate losses—the traditional approach to disaster risk—we restrict our consideration to how disasters affect those wealthy enough to have assets to lose in the first place, and largely ignore the plight of poor people. This report moves beyond asset and production losses and shifts its attention to how natural disasters affect people’s well-being. Disasters are far greater threats to well-being than traditional estimates suggest. This approach provides a more nuanced view of natural disasters than usual reporting, and a perspective that takes fuller account of poor people’s vulnerabilities. Poor people suffer only a fraction of economic losses caused by disasters, but they bear the brunt of their consequences. Understanding the disproportionate vulnerability of poor people also makes the case for setting new intervention priorities to lessen the impact of natural disasters on the world’s poor, such as expanding financial inclusion, disaster risk and health insurance, social protection and adaptive safety nets, contingent finance and reserve funds, and universal access to early warning systems. Efforts to reduce disaster risk and poverty go hand in hand. Because disasters impoverish so many, disaster risk management is inseparable from poverty reduction policy, and vice versa. As climate change magnifies natural hazards, and because protection infrastructure alone cannot eliminate risk, a more resilient population has never been more critical to breaking the cycle of disaster-induced poverty.

Climate Change and Cities bridges science-to-action for climate change adaptation and mitigation efforts in cities around the world.

This book provides an overview of the typical nature-based solutions (NBS) used for flood mitigation at different scales and in different areas (e.g. from catchment to hillslope scale; from urban to coastal areas). NBS can provide several ecosystem services, such as water regulation and water quality enhancement, and as such offer relevant technical solutions to complement typical grey infrastructures to mitigate flood hazard and water quality problems. In recent years, political awareness and interest from the scientific community have led to increasing implementation of NBS worldwide. In light of this trend, this book provides valuable insights into the environmental aspects of NBS, particularly their effectiveness for flood and pollution mitigation, and discusses socio-economic aspects related to the implementation of NBS, including regulatory aspects, cost, and citizens’ perceptions of NBS. Compiling the latest research, the book furthers our understanding of the role of NBS for flood mitigation and its relation to environmental aspects, to guide scientists and stakeholders in future NBS projects. It is intended for the scientific community and stakeholders, such as spatial planners and landscape managers. Chapter "Nature-based solutions for flood mitigation and resilience in urban areas" is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.

The Urban Street Stormwater Guide begins from the principle that street design can support--or degrade--the urban area's overall environmental health. By incorporating Green Stormwater Infrastructure (GSI) into the right-of-way, cities can manage stormwater and reap the public health, environmental, and aesthetic benefits of street trees, planters, and greenery in the public realm. Building on the successful NACTO urban street guides, the Urban Street Stormwater Guide provides the best practices for the design of GSI along transportation corridors. The state-of-the-art solutions in this guide will assist urban planners and designers, transportation engineers, city officials, ecologists, public works officials, and others interested in the role of the built urban landscape in protecting the climate, water quality, and natural environment.

The value of implementing nature-based solutions (NbS) for water treatment in urban environments is increasingly recognized due to the multiple ecosystem services and societal benefits they provide. The successful implementation of NbS for urban water treatment, however, depends on a range of diverse technical and societal factors that need to be taken into account. Those vary by the type of NbS implemented, the societal challenges the NbS are designed to address and the local ecological, socio-economic and political context, in which the solutions are implemented. This book provides a collection of guidelines for the implementation of three types of NbS for water treatment in urban environments across cities in South/Southeast Asia, namely constructed wetlands, green roofs and floating treatment wetlands. The guides were developed based on existing experiences with the establishment, operation, and maintenance of those three types of NbS in three different countries in South/Southeast Asia and the lessons learnt from their implementation. They provide detailed outlines of suggested steps for ensuring successful implementation in the respective local contexts. Those include overall planning schemes, surveys for socio-economic evaluations, suggested methods for construction and associated costs, required maintenance as well as a range of operational monitoring parameters. It also includes examples of approaches for the scaling of the three types of NbS discussed in the book in their respective local contexts. This book is expected to benefit local government units and contractors, and other stakeholders involved in NbS implementation and up-scaling, as well as researchers and postgraduate students who plan to conduct pilot-scale studies on NbS.

Building with Nature is a proven, innovative approach to create water-related Nature-based Solutions for societal challenges, that harnesses the forces of nature to benefit the environment, economy and society.00EcoShape, a unique collaboration between scientists, engineers, builders, designers and not-for-profits, has in the past decade designed, realized, monitored and researched multiple Building with Nature projects in Europe (especially in the Netherlands) and South East Asia. These projects demonstrate the capacity to build Nature-Based Solutions at scale to create safe and sustainable flood protection as well as ecologically rich and resilient environments that provide great places to live, work, and visit. These characteristics make Building with Nature the go-to method to adapt to and mitigate climate change.00In this book, EcoShape brings the authors into dialogue with experts and stakeholders to discuss methodologies and lessons learned about Building with Nature as well as potential barriers and enablers for implementation. It describes and illustrates key concepts, linking them to a range of landscape types and their underlying ecological, economic, and social systems. As such, the book is more than a manual; it captures the imaginative and inspirational potential of Building with Nature.