Climate change and continuous urbanization contribute to an increased urban vulnerability towards flooding. Only relying on traditional flood control measures is recognized as inadequate, since the damage can be catastrophic if flood controls fail. The idea of a flood-resilient city – one which can withstand or adapt to a flood event without being harmed in its functionality – seems promising. But what does resilience actually mean when it is applied to urban environments exposed to flood risk, and how can resilience be achieved? This paper presents a heuristic framework for assessing the flood resilience of cities, for scientists and policy-makers alike. It enriches the current literature on flood resilience by clarifying the meaning of its three key characteristics – robustness, adaptability and transformability – and identifying important components to implement resilience strategies. The resilience discussion moves a step forward, from predominantly defining resilience to generating insight into “doing” resilience in practice. The framework is illustrated with two case studies from Hamburg, showing that resilience, and particularly the underlying notions of adaptability and transformability, first and foremost require further capacity-building among public as well as private stakeholders. The case studies suggest that flood resilience is currently not enough motivation to move from traditional to more resilient flood protection schemes in practice; rather, it needs to be integrated into a bigger urban agenda.
What is this publication about?In this publication on ‘New urban economies’, we search for answers and insights to a key question: how can cities foster economic development and develop ‘new urban economies’. And, importantly, how can they do that:◗ in concertation with different urban stakeholders, ◗ responding adequately to key challenges and developments beyond their control, ◗ building on the cities’ own identity, industries and competences, ◗ in a sustainable way, ◗ and without compromising weaker groups.
This collection of articles contains contributions to the research project ‘From Prevention to Resilience’ (FPtP). In this project, the research team has generated insights and tools for designers, policymakers, and other professionals to contribute to more resilient cities and neighborhoods. The point of departure was public space as a site for intervention, while learning from the ongoing developments revolving around the Covid-19 pandemic. During the early phases of the pandemic, governments initially focused on preventing the virus from spreading. Public spaces came to be seen as potential places for contamination. In response, fences, markings, and barrier tapes were put into place to orchestrate people’s movement and promote physical distance. With our research project, we explored the role that public space could play besides such often ad hoc preventive measures. What other challenges can public space tackle with regard to the various shocks and stressors that hit cities and neighborhoods, now and in the future? And how to tackle these challenges in an integral way? An integral approach to designing public spaces involves many disciplines, and it is to a great extent dependent on local governments’ take on public spaces. To this end, we asked relevant experts to share their disciplinary reflections on a design perspective we have developed in the FPtP project, called Human / Non-Human Public Spaces. An earlier version of this design perspective was handed over to experts to provide feedback from an urban climate adaptation perspective and from a governance and cultural change perspective. Stephanie Erwin and Jeroen Kluck provide concrete feedback on the design perspective and offer a discussion in relation to the field of urban climate resilience. Alex Straathof offers an essayistic text in which he reflects on some of the key notions of the design perspective, reflecting on some of the key notions of the design perspective based on cultural theory and his experience with interventions on the neighborhood level. In parallel, we commissioned two independent experts in the field of spatial development and governance to make a preliminary analysis of the impact of COVID-19 on the government perspectives on public spaces. Both experts were given the same question, but they applied different methods. Hugo Verschoor Plug conducted an analysis on two national policy documents and six ‘omgevingsvisies’ – i.e., strategies on spatial planning and the environment – of large and middle-sized cities: Amsterdam, Breda, The Hague, Groningen, Rotterdam and Zwolle. Denise Vrolijk was asked to interview professionals from a cross-section of Dutch Cities in order to obtain their perspectives on how local governments viewed the role of public spaces in relation to resilience. Together, these analyses provide an overview of the current state of affairs in public space and urban resilience. We thank the authors for sharing their expertise and insights and thereby contribute to the FPtR project. This project is funded by The Netherlands Organization for Health Research and Development (ZonMw), part of the subsidy round ‘COVID 19: Maatschappelijke Dynamiek’, project nr. 10430032010029.
MULTIFILE
Worldwide, coral reefs are rapidly declining due to increased sea water temperatures and other environmental stresses (Figure 1). To counter the extinction of major coral reef building species on the island of Bonaire, the non-profit organization Reef Renewal Foundation Bonaire is restoring degraded reef sites using corals that are grown in local nurseries. In these nurseries, corals are propagated on artificial trees using fragmentation. After 6-8 months of growth in the nursery, the corals are transplanted to degraded reef sites around the island. Over the years more than 21.000 corals have been outplanted to reef restoration sites in this way. These corals show high survivorship under natural reef conditions but remain under threat by environmental disturbances, such as increased water temperatures, diseases, and competition with macroalgae. A promising intervention to increase reef persistence and resilience is to manipulate the coral-associated microbiome. At present, the composition of the microbiome in nursery-reared and outplanted corals on Bonaire is unknown. The aim of the current project is to identify and isolate naturally occurring beneficial bacteria that may stimulate the resilience of these corals. Our key objectives are: 1) to assess the presence of functionally beneficial bacteria in corals in nursery and restoration sites on Bonaire using metagenomic screening. 2) to design culture strategies to isolate these functionally beneficial bacteria. In the future, a selection of these beneficial bacteria can be applied to the corals to increase their resilience against environmental disturbances.
Restoring rivers with an integrated approach that combines water safety, nature development and gravel mining remains a challenge. Also for the Grensmaas, the most southern trajectory of the Dutch main river Maas, that crosses the border with Belgium in the south of Limburg. The first plans (“Plan Ooievaar”) were already developed in the 1980s and were highly innovative and controversial, as they were based on the idea of using nature-based solutions combined with social-economic development. Severe floodings in 1993 and 1995 came as a shock and accelerated the process to implement the associated measures. To address the multifunctionality of the river, the Grensmaas consortium was set up by public and private parties (the largest public-private partnership ever formed in the Netherlands) to have an effective, scalable and socially accepted project. However, despite the shared long term vision and the further development of plans during the process it was hard to satisfy all the goals in the long run. While stakeholders agreed on the long-term goal, the path towards that goal remains disputed and depends on the perceived status quo and urgency of the problem. Moreover, internal and external pressures and disturbances like climate change or the economic crisis influenced perception and economic conditions of stakeholders differently. In this research we will identify relevant system-processes connected to the implementation of nature-based solutions through the lens of social-ecological resilience. This knowledge will be used to co-create management plans that effectively improve the long-term resilience of the Dutch main water systems.
Sinds januari 2015 werken we met lector Jeroen Kluck van de Hogeschool van Amsterdam in een onderzoeksproject 'De klimaatbestendige stad' [1] dat tot doel heeft te onderzoeken hoe gemeenten wijken en straten klimaatbestendig kunnen inrichten. De focus van het onderzoek ligt op het duiden van de urgentie van hittestress, op het ontwerpen van standaard klimaatbestendige situaties en op een afweging van kosten en baten (o.a. voordelen van vergroening). Onderzoekers en studenten van de Hanze en hogeschool Amsterdam hebben in dat kader gemeten aan de hitte tijdens de hete zomer van 2015. Ook zijn er testen uitgevoerd naar diverse groen blauwe voorzieningen in het stedelijk gebied naar het lange termijn functioneren ervan. In Hoogeveen is in workshops in detail gekeken naar oplossingen in diverse straten, in de laatste stap worden de kosten gedetailleerd en concrete inrichting van groen blauwe voorzieningen vergeleken met traditionele inrichting op diverse criteria.
