Influence of Blue-Green and Grey Infrastructure Combinations on Natural and Human-Derived Capital in Urban Drainage Planning

The natural capital and ecosystem services concepts describe the multiple benefits people get from nature. Urbanisation has been identified as one of the key factors influencing the decline of natural capital globally. Urbanisation has also been associated with a recent increase in urban flooding incidents in most cities globally. While the understanding of blue-green infrastructure in urban drainage is well established, little is said about its influence on natural capital. This study utilises the Natural Capital Planning Tool, Benefits Evaluation of Sustainable Drainage Systems tool and expert stakeholder interviews to assess the influence of blue-green and grey infrastructure as adaptation pathways in urban drainage, on natural capital and ecosystem services, and to determine how these contribute to other forms of human-derived capital. Key findings show that blue-green options can enhance natural capital and ecosystem services such as amenity value while also contributing to social and human capital. Although the assessed blue-green options contribute to regulating ecosystem services such as floods regulation, their most significant contribution is in cultural ecosystem services, especially amenity value. It is concluded that incorporating blue-green infrastructure in urban drainage adaptive approaches can mitigate natural capital losses and contribute to other forms of capital crucial for human well-being

Assessment of freshwater ecosystem services in the Beas River Basin, Himalayas region, India

River systems provide a diverse range of ecosystem services, examples include: flood regulation (regulating), fish (provisioning), nutrient cycling (supporting) and recreation (cultural). Developing water resources through the construction of dams (hydropower or irrigation) can enhance the delivery of provisioning ecosystem services. However, these hydrologic alterations result in reductions in less tangible regulating, cultural and supporting ecosystem services. This study seeks to understand how multiple impoundments, abstractions and transfers within the upper Beas River Basin, Western Himalayas, India, are affecting the delivery of supporting ecosystem services. Whilst approaches for assessing supporting ecosystem services are under development, the immediate aim of this paper is to set out a framework for their quantification, using the macroinvertebrate index Lotic-Invertebrate Index for Flow Evaluation (LIFE). LIFE is a weighted measure of the flow velocity preferences of the macroinvertebrate community. Flow records from multiple gauging stations within the basin were used to investigate flow variability at seasonal, inter-annual and decadal time scales. The findings show that both mean monthly and seasonal cumulative flows have decreased over time in the Beas River Basin. A positive hydroecological relationship between LIFE and flow was also identified, indicative of macroinvertebrate response to seasonal changes in the flow regime. For example, high LIFE scores (7.7–9.3) in the winter and summer seasons indicate an abundance of macroinvertebrates with a preference for high flows; this represents a high potential for instream supporting ecosystem services delivery. However, further analysis is required to understand these hydroecological interactions in the study basin and the impact on instream supporting ecosystem services delivery

Towards Intangible Freshwater Cultural Ecosystem Services: Informing Sustainable Water Resources Management

Rivers provide a range of Cultural Ecosystem Services (CES) such as aesthetic values, sense of place and inspiration, which remain insufficiently studied due to challenges associated with the assessment of their subjective and intangible attributes. However, the understanding of CES remains important as they are strongly linked to human wellbeing. This study utilizes a questionnaire-based survey to capture views from two villages along the mainstream of the Beas River in India, to identify the CES it provides, to assess how local communities appreciate their importance and how they relate to river flows. In total, 62 respondents were interviewed. Findings show that the Beas River provides several CES but among these, spiritual/religious ceremonies and rituals, aesthetic values and inspiration benefits were indicated as absolutely essential to the local communities. Results also demonstrate that people’s perception of the quality of CES is sometimes linked to river flows. It can be concluded that the Beas River is crucial in the functioning and livelihoods of local communities as it lies within the core of their cultural, religious and spiritual practices. This study reinforces the need to consider the full suite of ecosystem service categories in sustainable water resources development, planning and decision making

Towards intangible freshwater cultural ecosystem services: informing sustainable water resources management

Rivers provide a range of Cultural Ecosystem Services (CES) such as aesthetic values, sense of place and inspiration, which remain insufficiently studied due to challenges associated with the assessment of their subjective and intangible attributes. However, the understanding of CES remains important as they are strongly linked to human wellbeing. This study utilizes a questionnaire-based survey to capture views from two villages along the mainstream of the Beas River in India, to identify the CES it provides, to assess how local communities appreciate their importance and how they relate to river flows. In total, 62 respondents were interviewed. Findings show that the Beas River provides several CES but among these, spiritual/religious ceremonies and rituals, aesthetic values and inspiration benefits were indicated as absolutely essential to the local communities. Results also demonstrate that people’s perception of the quality of CES is sometimes linked to river flows. It can be concluded that the Beas River is crucial in the functioning and livelihoods of local communities as it lies within the core of their cultural, religious and spiritual practices. This study reinforces the need to consider the full suite of ecosystem service categories in sustainable water resources development, planning and decision makin

Achieving Urban Flood Resilience in an Uncertain Future

Preliminary results of the UK Urban Flood Resilience research consortium are presented and discussed, with the work being conducted against a background of future uncertainties with respect to changing climate and increasing urbanization. Adopting a whole systems approach, key themes include developing adaptive approaches for flexible engineering design of coupled grey and blue-green flood management assets; exploiting the resource potential of urban stormwater through rainwater harvesting, urban metabolism modelling and interoperability; and investigating the interactions between planners, developers, engineers and communities at multiple scales in managing flood risk. The work is producing new modelling tools and an extensive evidence base to support the case for multifunctional infrastructure that delivers multiple, environmental, societal and economic benefits, while enhancing urban flood resilience by bringing stormwater management and green infrastructure together

Living the life of floods: place-based learning in an Anthropocene harmscape

This article explores how place-based learning and the development of landscape literacies unfold in a place suffused with a complex set of risks resulting from inter-operating and intersecting sociohistorical, political and environmental factors. By analysing assemblages of images and accompanying texts produced through a photovoice process undertaken by co-researchers in an informal settlement in South Africa’s Cape Flats, we show that residents are embedded in an ongoing process of embodied place-connectedness that has extensive pedagogical impact. We suggest that the learning that takes place in this harmscape may enable residents’ survival at the cost of allowing for either hope or the possibility of transformative change

Understanding resilience capitals, agency and habitus in household experiences of water scarcity, floods and fire in marginalized settlements in the Cape Flats, South Africa

A significant percentage of the urban population in most low- and middle-income countries live in informal settlements. Due to poor quality housing, dense settlement patterns and lack of risk reducing infrastructure, informal settlements are least prepared and at higher risk for climate change issues. Marginalized communities in settlements in the Cape Flats region of South Africa face a range of environmental hazards and risks including recurrent large-scale fires, localised flooding and inconsistent access to water. This paper presents findings from a household survey with 600 participants from three economically marginalised settlements in this region. The paper explores how different forms of capital come into play in the shaping of these experiences and responses and uses these to consider power structures and the creation of particular types of habitus amongst settlement residents. Results show that cultural (knowledge) capital is one of the most important capitals enabling resilience and adaptive capacities across all three sites. Findings show the complex interplay of forms of capital and the importance of recognizing ownership, control and power structures. Our findings also illustrate how repeated exposure to risk can shape a habitus of risk acceptance and a focus on coping rather than change. Insights from this study further enhance knowledge of community resilience that could potentially inform policy development and institutional disaster risk reduction strategies for climate change resilience of cities in low- and middle-income countries

‘It Means We are Not Safe’: Understanding and Learning from Household Experiences of Water Scarcity, Flood and Fire in Marginalized Settlements in the Cape Flats, South Africa

As climate change-related extreme weather events such as flooding and droughts increase in frequency and severity in most cities worldwide, there is a need to deepen understanding of disaster risks and adaptive capacities. A significant percentage of the urban population in most low- and middle-income countries live in informal settlements. Due to poor quality housing, dense settlement patterns and lack of risk reducing infrastructure e.g., drainage systems, informal settlements have been identified as being least prepared and at higher risk for climate change issues and therefore serve as important sites for understanding these risks and capacities. Marginalized communities in settlements in the Cape Flats region of South Africa face a range of environmental hazards including recurrent large-scale fires, localised flooding and water supply shortages. This paper presents findings from a household survey with 600 participants from three economically marginalised township settlements in this region. The aim of the survey was to understand the lived experiences, coping mechanisms and resilience attributes of the residents faced with localised flooding, fires and water shortages – locally salient environmental risks and hazards. The paper explores how different forms of capital come into play in the shaping of these experiences and responses and uses these to consider power structures and the creation of particular types of habitus amongst settlement residents. Insights from this study further enhance knowledge of community resilience that could potentially inform policy development and institutional disaster risk reduction strategies for climate change resilience of cities in low- and middle-income countries

Towards Intangible Freshwater Cultural Ecosystem Services: Informing Sustainable Water Resources Management

Rivers provide a range of Cultural Ecosystem Services (CES) such as aesthetic values, sense of place and inspiration, which remain insufficiently studied due to challenges associated with the assessment of their subjective and intangible attributes. However, the understanding of CES remains important as they are strongly linked to human wellbeing. This study utilizes a questionnaire-based survey to capture views from two villages along the mainstream of the Beas River in India, to identify the CES it provides, to assess how local communities appreciate their importance and how they relate to river flows. In total, 62 respondents were interviewed. Findings show that the Beas River provides several CES but among these, spiritual/religious ceremonies and rituals, aesthetic values and inspiration benefits were indicated as absolutely essential to the local communities. Results also demonstrate that people’s perception of the quality of CES is sometimes linked to river flows. It can be concluded that the Beas River is crucial in the functioning and livelihoods of local communities as it lies within the core of their cultural, religious and spiritual practices. This study reinforces the need to consider the full suite of ecosystem service categories in sustainable water resources development, planning and decision making