Resilience as a concept is multi-faceted with complex dimensions. In a disaster context, there is lack of consistency in conceptualizing social resilience. This results in ambiguity of its definition, properties, and pathways for assessment. A number of key research gaps exist for critically reviewing social resilience conceptualization, projecting resilience properties in a disaster-development continuum, and delineating a resilience trajectory in a multiple disaster timeline. This review addressed these research gaps by critically reviewing social resilience definitions, properties, and pathways. The review found four variations in social resilience definitions, which recognize the importance of abilities of social systems and processes in disaster phases at different levels. A review of resilience properties and pathways in the disaster resilience literature suggested new resilience properties—“risk-sensitivity” and “regenerative” in the timeline of two consecutive disasters. This review highlights a causal pathway for social resilience to better understand the resilience status in a multi-shock scenario by depicting inherent and adaptive resilience for consecutive disaster scenarios and a historical case study for a resilience trajectory in a multiple disaster timeline. The review findings will assist disaster management policymakers and practitioners to formulate appropriate resilience enhancement strategies within a holistic framework in a multi-disaster timeline.
As a result of the large number of devastating disaster events across the world in the last two decades (Cox and Hamlen 2015), global interest and emphasis on the resilience capabilities of communities to disasters have increased (Aldunce et al. 2015). Rapid urbanization globally, and poor development planning have increased the exposure of communities to hazards, thus generating new or exacerbating existing risks and contributing to sharp increases in disaster related losses (UNISDR 2015b). A key reason that existing hazards often evolve into disasters is the failure of communities to manage emerging risks (Birnbaum et al. 2016). Communities need to proactively mitigate risks and build resilience to reduce damages caused by disasters and to recover rapidly from disasters. However, the speed and extent of recovery from disasters often differ across communities (Burton 2015), depending on a number of complex factors such as their socioeconomic status, extent of external support received and aid provision, and their past experience of disasters. Hence, the complex resilience phenomenon requires policymakers and researchers to understand the unique characteristics of resilient communities so as to help communities to better prepare for and recover from disasters.
The etymological journey of resilience by Alexander (2013) traced the definitions of resilience in history, which highlighted that the core meaning of the term “resilience” in the past was the ability of an object or entity to return back to its original shape after a disturbance. The resilience concept is not new, and has been applied across many diverse disciplines, including ecology, biology, social-ecological systems, social science, and psychology, over the past decades (Norris et al. 2008; Ainuddin and Routray 2012; Quinlan et al. 2015; McMillen et al. 2016). For example, the “bounce-back” analogy from engineering resilience, “resistance” concept in social vulnerability, and the “robustness” concept in social-ecological systems theory have contributed to diverse interpretations of resilience in research literature (Matyas and Pelling 2015).
New thinking in resilience recognizes the complex relationships between the built, natural, and social environments and their influences on the understanding of resilience of communities to disasters (Norris et al. 2008). Quinlan et al. (2015, p. 679) looks at this diverse approach positively, highlighting that “while multiple conceptions of resilience can be problematic in terms of common indicators and comparable metrics, they can also extend the concept to a broader spectrum of contexts and drive exploration for better approaches to implementation.” This argument has gained wide attention among disaster management stakeholders since the adoption of the Sendai Framework for Disaster Risk Reduction 2015−2030 in 2015.
While resilience theory has been studied in ecology since the 1970s, social resilience, which is a critical dimension of resilience, is still not well defined and poorly understood compared to the ecological sciences (Cuthill et al. 2008; Henly-Shepard et al. 2015). Further, to advance the conceptual understanding and practical application, clarification in the use of resilience and consistency in approach are required (Zhou et al. 2010). In most of the urban resilience studies, there is less focus on social and economic resilience assessment compared to infrastructure, environment, and institutional resilience (Sharifi 2020). However, as recent studies have increasingly focused on social resilience, this article aims to critically review existent literature on social resilience definitions, properties, and pathways to advance the concept of social resilience in the context of natural hazards and disasters. Community resilience properties and pathways are commonly discussed with the focus on a single disaster, while in reality these should be investigated between two consecutive disaster events (past and future). A critical analysis of existing social resilience properties and resilience pathways between two disaster events is also presented in this article, which will contribute to integrating past learnings and future planning in building social resilience to disasters.
2 Social Resilience Definitions in a Disaster Context
In this section, a brief overview of the terms used in resilience literature is presented (Sect. 2.1). Subsequently, a number of social resilience definitions in the existent literature were identified using a systematic review method (Sect. 2.2) and a critical analysis of the identified social resilience definitions is undertaken (Sect. 2.3). Finally, the social resilience definition is depicted from a system thinking perspective to help operationalizing the social resilience concepts within a holistic framework in disaster management (Sect. 2.4).
2.1 Brief Overview of Terms Used in Resilience Literature
Resilience, community resilience, disaster resilience, urban resilience, and community resilience to disasters are defined in different ways, resulting in confusion. A comprehensive review of community resilience definitions in disaster management have been undertaken by a number of researchers (see Norris et al. (2008), Zhou et al. (2010), Manyena (2006), Mayunga (2007), and Chandra et al. (2010) for compilation of different definitions of resilience used in academic literature). Timmerman (1981, p. 21) defined resilience as “the measure of a system’s or part of a system’s capacity to absorb and recover from the occurrence of a hazardous event.” This definition is considered one of the earliest definitions in a disaster context (Klein et al. 2003). “Despite more than three decades’ worth of collective research experience on the concept, resilience still means different things to people in different fields” (Zhou et al. 2010, p. 22). However, this diversity in definition yields significant collective learnings and experiences that can be applied in a disaster context (Zhou et al. 2010).
Resilience can be understood as “an attribute (e.g., ability or capacity), a process, and/or an outcome associated with successful adaptation to, and recovery from, adversity” (Pfefferbaum et al. 2013, p. 251). For example, UNISDR (2009, p. 22) defined disaster resilience of communities as “the ability of a community exposed to hazards to resist, absorb, accommodate to and recover from the effects of a hazard in a timely and efficient manner, including through the preservation and restoration of its essential basic structures and functions.” The resilience of a community to a disaster is determined not only by the ability to recover after a disaster, but also the degree to which a community has the necessary resources and capability to organize itself, both prior to and after a disaster (UNISDR 2015a). Resilience can also be defined at individual, community, organization, or systems levels depending on the research focus (Boon et al. 2012). For example, Norris et al. (2008) categorized resilience definitions at varying levels such as physical, ecological, social, city, community, and individual. In contrast, Chandra et al. (2010) analyzed how each definition fits within different phases of a disaster management cycle.
Definition of community resilience to disasters continues to evolve based on the research context, lessons learned, and past experiences in managing disasters. Definitions for community resilience from the literature that capture the words “disaster” OR “hazard” AND “resilience” were extracted. Keywords in each definition were analyzed for their coverage in different phases of the disaster management cycle (ex-ante, during a disaster period, and ex-post phases). Analysis of these key terms demonstrated that resilience is most commonly referred to as the ability or capacity of a community to recover back after a disaster (Mayunga 2007). However, new definitions increasingly frame community resilience to disasters as encompassing all phases of a disaster and not just limited to disaster response and recovery phases (Mayunga 2007).
The term “community resilience” is mostly used as a concept of overall resilience that includes all key dimensions such as social, economic, institutional, environmental, and physical. In social resilience, the focus has commonly been either on the resilience of social entities or on social mechanisms or both. Similarly, economic resilience definitions focus on different levels of economic systems such as micro-, meso-, and macro-economic (Rose and Krausmann 2013). The key difference in the definitions of different thematic concepts such as social resilience and economic resilience is the difference in the system in focus, whether social or economic. However, the terms, “community resilience” and “social resilience” are sometimes interchangeably used in the literature.
Similar to the confusion and inconsistencies in defining resilience by researchers, practitioners, and policymakers (Bahadur, Tanner et al. 2015), there is also a lack of consistency in social resilience definitions. Social resilience in a disaster context may involve a transformation of social systems to another state, rather than conservation of functionalities of the social system (Alexander 2013), that is, conservation means return to pre-disaster state and transformation means the system does not necessarily need to return to its pre-disaster state, but it transforms to a new state. Social resilience to disasters is determined by the ability to recover after a disaster that is measured by the degree to which a community has the necessary resources and capability to organize itself, both prior to and after a disaster (UNISDR 2015a). Social resilience needs to be conceptualized as the proactive ability of social entities and mechanisms as opposed to defining it only as the reactive capability for responding to a crisis (Matyas and Pelling 2015) and with the adaptation and bouncing forward phenomena (Alexander 2013; Manyena 2016).
The work by Adger (2000) on ecosystems is widely acknowledged as the first study to define social resilience (Keck and Sakdapolrak 2013). In the context of socio-ecological systems, in this case a mangrove conversion, Adger (2000, p. 361) defined social resilience as “the ability of communities to withstand external shocks to their social infrastructure.” Adger (2000) further highlighted the need to consider the contextual social attributes in defining social resilience because of varying differences in community institutions and resource priorities. Additionally, the diversity and dynamics of the context, in which the concept of resilience is operationalized, introduce further complexity to the definition (Alexander 2013).
2.2 Identification of Social Resilience Definitions from the Literature (PRISMA Method)
The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method was used to select social resilience studies for a detailed review. PRISMA is an established method for guiding systematic review of academic literature, and is based on four steps as detailed in Fig. 1: Identification, Screening, Eligibility, and Inclusion. At the identification stage of the PRISMA method, articles were searched using a search string “(Social) OR (Community) AND (Resilience)” in Title, Abstract, and Keywords of articles published during 2005−2016 in the Scopus database. This search resulted in 12,121 articles, which were further reduced to 6,811 articles in stage 2: screening, using further limiters such as “relevant subject areas and English language.” In stage 3: Eligibility, 1,194 articles were obtained for further screening by excluding articles irrelevant to disaster studies. Another exclusion criterion based on the title and abstract review resulted in 172 articles for full-text review. In stage 4: Inclusion, the PRISMA method identified 10 different contextual social resilience definitions from 31 social resilience studies derived by screening the full text of the 172 eligible manuscripts and six articles from the references of the 31 articles for further analysis. Table 1 shows the 10 selected social resilience definitions.
2.3 Analysis of Social Resilience Definitions
Social resilience definitions can be classified into the following four sub-categories for ease of analysis: (1) social entities or largely social systems that include families and ranging to wider community such as social groups, organizations, resources, and structures; (2) social mechanisms such as understanding and managing emerging risks as well as self-organization and transformation capacities; (3) social entities and mechanisms (both outcome and process oriented features); and (4) coping, adaptive, and transformative (CAT) capacities. As in Table 1, the 10 social resilience definitions were categorized into the first three sub-categories.
Social resilience as an ability of social entities to cope with, withstand, and/or recover from disasters: Social resilience is defined by some researchers as the ability or capacity of people, social units, and social systems to cope with, withstand, and/or recover from disasters as shown in Table 1. Social entities in this definition include individuals, families/households, communities, organizations, and specific social groups. For example, in the context of seismic hazards, Bruneau et al. (2003) defined social resilience as the ability of social units to contain, recover from, and mitigate future effects of earthquakes. This definition covers both the pre- and post-event phases of the disaster management cycle such as preparedness and recovery. Similarly, Lorenz (2013) used social systems in their definition, while Maguire and Hagan (2007) used social groups. Further, the social resilience definition proposed by Khalili et al. (2015) focuses on the ability of a community to withstand external social shocks towards enhancing social capacity. However, the definitions focused on assessing the abilities of social entities have limited focus on assessing the abilities of social mechanisms, which is also important for comprehensive definition of social resilience.
Social resilience as an ability of social mechanisms to cope with, withstand, and/or recover from disasters: An alternate way for understanding social resilience is to conceptualize it as a social mechanism. Social mechanism includes community processes such as decision making, use of resources/features, and community actions. These are important in the process of building a disaster resilient community. However, only a few researchers have considered social resilience as the ability of social mechanisms to cope with external shocks or as a process or as a combination of risk perception, ability of self-organization, and transformation. Since there are multiple social entities as defined in category (1) above, social resilience definitions that have focused on social mechanisms have failed to specify the resilience of multiple social entities. This has limited the application of the definition in a practical and inclusive way when social resilience is measured.
Social resilience as an ability of both social entities and mechanisms to cope with, withstand, and/or recover from disasters: In a disaster context, Kwok et al. (2016) considered social resilience as the ability and robustness of community structures, resources, and processes to anticipate, cope with, and recover from disasters. Social resilience definitions in this context have focused on social entities and mechanisms as opposed to considering only the community as a resilience entity. Defining social resilience in terms of the ability of social entities and mechanisms helps to conceptualize social resilience not only as resilience entities, but also with resilience mechanisms and their interconnections with resilience entities. However, capturing the accurate inter-relationship between entities can still be a challenge, although a system approach can help to capture the dynamic nature of social resilience characteristics.
Social resilience as coping, adaptive, and transformative (CAT) capacities: Social resilience is also defined in terms of a community’s coping, adaptive, and transformative capacities. Keck and Sakdapolrak (2013) highlighted in their multidisciplinary review of social resilience concepts and definitions that the focus has been on the capacity of social actors when social resilience is conceptualized as CAT capacities. It is also helpful to define social resilience using CAT capacities, because they can capture dynamic attributes of social systems at multiple scales with the combination of different capacities and the interaction between capacities to ensure the stability of a system. For example, coping is the ideal strategy to manage disaster risk. However, when the coping capacity is exceeded, the adaptive capacity will be activated (Serfilippi and Ramnath 2018). When adaptation is not adequate to overcome the disaster risk, the system will progress towards transformation to sustain system stability (Serfilippi and Ramnath 2018). This process can help social systems to achieve the desired resilient status through CAT capacities.
In the natural resource management context, Cuthill et al. (2008) and Maclean et al. (2014) defined social resilience as adaptation and transformation strategies of individuals and communities to counter social, environmental, economic, and political challenges. To define social resilience, Maclean et al. (2014) have drawn the concept of adaptation and transformation strategies from social-ecological system perspectives and health and social sciences disciplines. They inter-related social resilience to the adaptive capacity of people individually and collectively. These definitions do not explicitly imply the ability of all social entities, and it is mostly aligned to the ability of social mechanisms. Since the capacity-based resilience definitions are widely used across different disciplines, each of the capacity components is discussed in detail to understand differences in its conceptualization compared to categories (1), (2), and (3) above. Table 2 summarizes each of the capacities, which are further explained below.
Coping capacity: Coping capacity is the anticipative, absorptive, and recovery capacity to a disaster (Parsons et al. 2016). An example of coping capacity is the level of resources and the manner in which individuals or families use these resources to face the adverse consequences of a disaster. Keck and Sakdapolrak (2013) viewed it as a reactive absorptive capacity for coping after a disaster to restore the functioning of the community to its previous level in the short term. On the other hand, it can be defined as “means by which people or organizations use available resources, skills, and opportunities to face adverse consequences that could lead to a disaster” (Parsons et al. 2016, p. 1), which can be viewed as a proactive capacity to an emerging disaster. While both definitions consider the same resilience capacity to a disaster, two different interpretations can be identified based on the time and purpose of use. The proactive interpretation aims to use the coping capacities to face a disaster, while reactive interpretation aims to restore the functioning of the community after a disaster.
Adaptive capacity: Adaptive capacity is defined as the ability to mobilize actions, processes, and decisions that enable reflections and adjustments in existing social norms and processes through learning (Nelson et al. 2007; Parsons et al. 2016). For example, considering a community that is vulnerable to flooding, adaptive capacity may involve preventive or mitigation strategies based on the learnings from past flooding experience. Hence, possible adaptive strategies could include relocating people living in high flood risk areas, or constructing levees in flood risk areas. Keck and Sakdapolrak (2013) defined this as an ex-ante preventive capacity that helps the community to anticipate future risk through lessons learned from past disasters. How adaptive capacity is linked to social resilience is a contested discussion in academic literature, since it is attributed in many different ways such as robustness of the system, level of resilience, an element of resilience, or one of the factors influenced by resilience (Klein et al. 2003; Lorenz 2013).
Transformative capacity or participative capacity: In the realization process of a resilient system, transformation and transition are key components (Xue et al. 2018). Transformative capacity is defined as the measure of capacity to self-organize and ability of the system to change its own structures (Lorenz 2013). Transition is the ability to successfully move into a new phase or sustain in a new timeframe while adapting to disturbances from transformation. For example, the key factors of transformative capacity include policy direction, strategic thinking, leadership role, and innovation (Bahadur, Peters et al. 2015). Besides, it is an ex-ante participative capacity to make future development decisions by understanding future disaster risks (Keck and Sakdapolrak 2013). The transformative capacity at smaller scale could develop social resilience at a larger scale, providing new opportunities and room for innovation to build greater resilience to future disasters (Folke et al. 2010). Transformative capacity is important in addition to coping and adaptive capacities (Keck and Sakdapolrak 2013; Lorenz 2013; Manyena 2016), since the importance of self-organization and participation in decision-making processes have also been highlighted as important factors during disaster response.
Many different interpretations of CAT capacities result in numerous social resilience definitions. For example, a review of adaptive capacity concepts highlighted that transformation is one of the properties of adaptive capacity and it is mostly attributed to governance and institutions (Engle 2011). Further, adaptive and transformation capacities are viewed as proactive capacity to prepare for emerging future disasters and these are based on lessons learned from past disasters. This suggests that transformative or participative capacity needs to be considered in all phases of a disaster, rather than only emphasising it in either pre- or post-disaster phase. Masnavi et al. (2018) in their review identified three conceptual approaches to resilience thinking: resilience as recovery, as an adaption capacity, or as a change, which is similar to defining resilience in one of the CAT capacities. However, a key challenge in defining social resilience using CAT capacities is the difficulty to delineate those capacities in a specific timeline or disaster phases. This is because, at a given point in time, the status of a community is always between a recent past disaster and a future disaster, and hence CAT capacities can eventuate simultaneously (Béné et al. 2015). Moreover, CAT capacities vary mostly based on the time extent of different disaster phases and the complexity of the disaster situation.
2.4 Social Resilience Definition from a Systems Thinking Approach
Based on different definitions of social resilience to disasters, a conceptual map of key system components of social resilience was created as shown in Fig. 2. A system perspective is considered for social resilience to disasters as an overlapping system of multiple resilience characteristics belonging to social resilience entities and processes at multiple levels. Social entities are complex adaptive systems (CAS), experiencing dynamics and stresses internally and externally and disaster-affected social entities should be recognized as CAS systems, for greater understanding (Day 2015). Accordingly, conceptualizing social resilience includes the mapping of abilities of social entities and mechanisms and their interrelationships, and understanding them at different scales such as individual, family, community, and social groups/organizations. As shown in Fig. 2, the abilities of both social entities and social mechanisms are considered along the different phases of a disaster, that is, ex-ante, disturbance, and ex-post. A “5S” social resilience model developed by Saja et al. (2018) is an example to consider for such a system-based approach for assessing social resilience in a disaster context. However, future research in conceptualizing and defining social resilience need to be aligned to overcome the challenges of a dynamic and complex nature of social resilience phenomena (Saja et al. 2021).
Boon et al. (2016) argued that the strategies for resilience building programs should be integrated across multiple entities from micro to macro levels and linking elements from complex and diverse systems at several levels. Since there is a growing need for understanding social resilience at various social levels (Kulig and Botey 2016), innovative approaches are needed to assess the dynamic interactions within and between multiple social resilience dimensions (Buckle 2006). Since resilience is presented as the concept of managing responses to the disturbances caused to the systems, similar to sustainability that explains the long-term persistence of systems, both resilience and sustainability concepts need to be collectively addressed (Chambers et al. 2019). Hence, the linkages between resilience and sustainability need to be well-established based on the complementarity between the two concepts that will help to define and operationalize a holistic approach to sustainable development and disaster-risk management.
3 Social Resilience Properties and Pathways in Disaster Phases
Social resilience is viewed as a time-based sequential phenomenon because its properties are event dependent and time-sensitive (Constas et al. 2014). As a result, the changes in the resilience status can be measured before and after an event or over a period of time. In Sect. 2, various resilience definitions were discussed based on four categories of conceptualizations. However, when the definition of resilience is discussed, three key elements between numerous concepts of resilience need to be delineated: severity of the disaster, the speed of recovery, and the final status of recovery (Boin et al. 2010). Further, recent discussions have argued for a more proactive stance for resilience to include disaster risk reduction, since the traditional practice is more towards a reactive approach (response preparedness) that embraces the engineering version of resilience (De Bruijne et al. 2010). Hence, the three key elements delineating disaster resilience concepts highlighted above and the recent trends in proactive framing of disaster management, necessitates a detailed discussion on the properties and pathways of resilience, which is one of the key objectives of this article. This discussion will help to comprehensively understand social resilience in a future disaster context.
3.1 Social Resilience Properties
Bruneau et al. (2003) described four properties of resilience, known as “4R”: robustness, redundancy, resourcefulness, and rapidity. Kimhi and Shamai (2004) outlined similar properties as Bruneau et al. (2003), though using different terms, for example “redundancy” as “resistance,” “rapidity” as “recovery,” and “resourcefulness” as “creativity” (Table 3). However, “risk-sensitivity” and “regenerative” as key resilience properties in the pre- and post-disaster phases need to be included as resilience properties in addition to the existing “4R” properties (ESCAP 2015). “Risk-sensitivity” and “regeneration” in principle are about resilient design and planning in the pre-disaster risk reduction and post-disaster reconstruction activities, respectively. Post-disaster reconstruction provides a window of opportunity to not only return to the pre-disaster level, but also to enhance resilience and to regenerate social and ecological systems (Oliver et al. 2013), thus is an important property of resilience. “Risk-sensitivity” is similar to “regenerative,” but is considered when a new system is built in a pre-disaster context. The targets set out in the Sendai Framework for Disaster Risk Reduction 2015−2030 are also primarily aligned with resilient, sustainable, and regenerative communities in a way that is sensitive to disaster risks and its drivers (UNDRR 2019).
Figure 3 shows the “6R” resilience properties as a function of resilience status and time (adapted from Maguire and Hagan (2007) and “4R” properties of Bruneau et al. (2003)), between two disaster events. The aim of this study was to understand the resilience properties and pathways of a community between two disaster events (in a real time scenario), which has not been investigated in detail in the literature. In a disaster context, resilience is mostly viewed as desirable characteristics of social systems and processes (Boin et al. 2010), which can be delineated in pre- and post-disaster phases. Hence, resilience properties of a social system need to be described, since benchmarking a resilient social system is a complex process. For example, inherent capacity that exists before a disaster becomes a coping and adaptive capacity in response to the disaster. In social resilience context, these are further amplified to transformation capacities.
3.2 Social Resilience Pathways
Typically, every community responds to a disaster event differently, due to their unique set of capacities in dealing with such adversities (Sherrieb et al. 2010). Similarly, a community’s reaction has been found to vary with every subsequent disaster event encountered (Maguire and Hagan 2007), largely as a result of past disaster experiences and changes in socioeconomic conditions. Therefore, understanding the past social resilience pathwaysFootnote 1 that facilitate disaster preparedness, response, and recovery, will assist governments, disaster practitioners, and communities to devise strategies to build more resilient communities. Currently, mapping of trajectories depicting social resilience pathways in a disaster context has mainly focused on a single disaster event, which has either already occurred or yet to occur. However, it is important to understand the social resilience pathway of a community between two consecutive disaster events for a given community that has already faced at least one disaster in the past and is in a pre-disaster stage for the next emerging/potential disaster at a point in time. Such an understanding will assist in formulating strategies for enhancing appropriate inherent and adaptive resilience strategies based on past experiences and existing status.
Frankenberger et al. (2012) demonstrated trajectories of social resilience to food scarcity as successive shocks with multiple alternative community recovery scenarios. Similar trajectories of social resilience causal pathway along the phases of two consecutive disasters are shown in Fig. 4, based on disaster management and resilience concepts of Cutter (2016), Mayunga (2007), Constas et al. (2014), and Frankenberger et al. (2012). The limitation in depicting social resilience pathways between two major disasters is the small-scale disturbances along the timeline. It is assumed that the severity scale of disaster #1 and disaster #2 are large with significant impact on the resilience status of communities. Figure 4 is a forward-looking resilience status in real time, where the community is in a post-disaster #1 and pre-disaster #2 state along with its potential future resilience state after the occurrence of next disaster (that is, disaster #2, which is the future predicted disaster).
As shown in Fig. 4, social resilience can be categorized as being inherent and adaptive resilience (Cutter 2016). In terms of resilience properties discussed in Fig. 3, inherent resilience is about resistance/redundancy and robustness, whereas the adaptive resilience is resourcefulness/creativity. While inherent resilience is the ex-ante resilience, which is a baseline for benchmarking existing conditions, adaptive resilience is the ability to respond to changes due to a disaster event and its ex-post (post-disaster component) (Cutter 2016). When a disaster first strikes (disaster #1 in Fig. 4), adaptive social resilience can alter the community’s inherent social resilience depending on the capacity and willingness of social entities to learn from previous disasters. An enhanced level of inherent social resilience will help the community to recover to the previous level or better than before depending on its adaptive social resilience (scenario 1 or 2). However, it is also possible that the inherent social resilience to future disasters (disaster #2 in Fig. 4) has deteriorated due to an absence of resilience building efforts that may result in lack of adaptive social resilience.
Scenarios 3 and 4 depict low levels of social resilience that either results in the community reaching a worse state than before or being unable to recover (Fig. 4). Time difference between t = t1 and t = t3 largely depends on when the next disaster strikes at t = t3. In this review, the focus is on inherent resilience at the preparedness phase for future disasters (disaster #2), and the current status of the social entity is between t = t2 and t = t3, since it is assumed that the community has already faced a disaster (disaster #1). The aim of the trajectory shown in Fig. 4 is to understand four potential scenarios to plan for the future disaster (disaster #2). The trajectory facilitates an insight into the status of a community (in normal and disaster contexts) and its social resilience capabilities in real time (at the time of measurement). The disaster events #1 and #2 shown in Fig. 4 are considered to be disaster events with large impact, although many smaller disturbances may have occurred between two major disaster events. The impact due to these smaller disturbances was assumed negligible in this trajectory.
4 Case Studies from Sri Lanka
The variations in social resilience levels and pathways on the timeline with two consecutive disasters described in Fig. 4 are explained using the two examples below. The first example is about a community in Sri Lanka that experienced a 10-month long drought (disaster/disturbance #1) before sudden arrival of heavy monsoon rain. A mini cyclone and localized heavy flooding (disaster #2) occurred as a result of torrential rains, which left over 200,000 people stranded, 15,000 displaced, and over 5000 homes destroyed (Perera 2012). Before the impact of the monsoon rain, the long drought had destroyed 23% of their expected rice harvest, putting many farmers at risk, resulting in the lack of adaptive capacity to mitigate against the floods among the drought affected farmers. There were also increased levels of debt among the farming community due to the increase in the price of rice seeds that forced them to liquidate household assets to repay the debts, resulting in further depletion of their livelihoods (Coslet et al. 2017). In this example, disaster #2 occurred just after 10 months from the occurrence of disaster #1. People were not able to recover adequately from disaster #1, or build inherent resilience for disaster #2, due to the short time gap of 10 months between two consecutive disasters.
The second example is about the coastal communities in the southeastern part of Sri Lanka that was devastated by the 26 December 2004 tsunami. The communities also experienced a severe flood disaster event in 2011. Since the tsunami disaster was a new experience, the damage was catastrophic due to a lack of awareness and preparedness. As a result, it took many years for the affected communities to recover back to their previous status or to a better position than the position before the tsunami. Although communities were able to rebuild their inherent resilience during the period of tsunami recovery, the flood disaster in 2011 again resulted in declining levels of social resilience. This example is also similar to the first example, but there are two key differences. First, the seven-year time gap between two disaster events in the second example is significant than that of example 1, which highlights the importance of timeframe and the gap between high impact disasters in building resilience. The second difference is that people had gained a certain level of inherent resilience to face disaster #2, although the recovery process had not reached to a level to build the communities to a better status than the status before disaster #1.
The above two examples illustrate how the level of social resilience changes over the course of two disaster events. In both scenarios, it took more time and effort for the community to recover to a better status after disaster #2, although the severity of both disasters were lower in example 1 compared to the disaster events in example 2. Hence, the time gap between two consecutive disaster events and severity of those disasters highly influence the changes in inherent and adaptive resilience of communities to disasters. Further, the correlation between inherent and adaptive resilience has not been empirically investigated (Cutter 2016), which is not always achievable as it may require a longitudinal study of the before, between, and after disaster phases to explore the optimal coping and recovery pathways of a community. From a research point of view, it is important to improve the understanding of social resilience pathways along the disaster timeline of a community (at minimum between two consecutive disasters). Therefore, it is critical to study the variation in social resilience pathways along the associated causes in different social contexts such as urban versus rural, coastal versus mountain communities, and exposure to different types of natural hazards.
An example of multi-shocks in Sainthamaruthu Divisional Secretariate division (DS division), which is one of the administrative divisions in the southeastern coast of Sri Lanka is provided below from the historical records, in order to understand the social resilience trajectory in different major disaster events over the past centuries.
The historical records show that a series of cyclones hit Sainthamaruthu in the nineteenth and twentieth centuries. This includes severe and medium category cyclones in 1845, 1891, 1907, 1921, and 1978. Although the data on damages and losses are not available for these cyclone events, the 1978 cyclone was reported to be the major cyclone in the historical records available, and it took three months to bring back to the normalcy. Three major floods were also reported in this area: in 1933, 1957, and 2010. The 2004 tsunami was the major devastating disaster in the history of this area, which killed 768 people (the 2004 population of Sainthamaruthu division was 25,605 people) and entirely wiped out half of the Sainthamaruthu division, leaving 722 families homeless and more than 2500 houses severely damaged. It took more than five years for recovery from the tsunami damages. (Translated and summarized from the book History of Sainthamaruthu (Jameel 2009, pp. 391−404))
Table 4 provides the disaster type, year/date, and a brief description of disasters over the past century period in Sainthamaruthu in the southeastern coast of Sri Lanka.
The trajectory for two disaster events shown in Fig. 4 can be repeated for all the past disaster events as shown in Fig. 5 (adapted from Béné et al. (2016) for disaster events in Sainthamaruthu in the southeastern coast of Sri Lanka), if the resilience status of a community after every shock (ei) is known relative to the previous disaster event (ei+1). According to Béné et al. (2016, p. 165), households sometimes do not completely recover from the shock when the next shock hits, which is characterized as “a constant state of incomplete recovery” from multi-shocks multi-stressors context as illustrated in Fig. 5, such as between e8 and e9. The same trajectory could be true for the community as a whole and for social resilience, although the resilience status among different households in a community may vary widely. For example, the complete functionality of community organizations may not have recovered due to consequent disaster events. This leads to a similar state of incomplete recovery of social resilience characteristics. Further, the sustainability of resilience recovery should be a concern in the post-disaster recovery process, which is more than simply rebuilding a resilient community to reduce future disaster risks, but facilitates sustainable development (Sou 2019).
5 Conclusion and Recommendations for Future Research
This article has critically reviewed social resilience definitions, properties, and pathways to address the existing multiple research gaps, including: (1) an alternative conceptualization of resilience definition using systems thinking; (2) the projection of resilience properties in a development and regeneration context; and (3) the development of the resilience trajectory in the multiple consecutive disaster timeline.
The systems thinking for conceptualizing social resilience can be further expanded to develop conceptual maps with multiple social resilience characteristics that can provide a basis for defining and framing social resilience broadly and to adapt it in a specific context. Further, the “4R” properties (robustness, redundancy, resourcefulness, and rapidity) mostly considered in a single disaster context is expanded with “6R” properties (risk-sensitivity and regenerative properties) in ex-ante/ex-post phases of two subsequent disaster events (Fig. 3). In this review, a social resilience causal pathway of a community to two subsequent disaster events (past and future) was also comprehended in a trajectory (Fig. 4). While most of the existing trajectories in the literature have considered a single disaster, the trajectory between two consecutive disaster events as shown in Fig. 4 is useful since the resilience to a past disaster influences the resilience status of a community to a future disaster. A resilience trajectory for multiple-disaster events (Fig. 5) was also drawn with a historical example from the southeastern coast of Sri Lanka, which helps to advance the longitudinal research on community resilience to disasters in a historical timeline.
The review of existing definitions, properties, and trajectories highlighted the need for integrated conceptualization of social resilience in different phases of a disaster timeline and along the consecutive multiple disasters. The proposed additional or alternative conceptualization measures in definitions, properties, and trajectories will assist disaster management policymakers and practitioners to position social resilience within a holistic framework.
The following recommendations were also drawn by critically reviewing social resilience definitions, properties, and pathways in this study. First, review of social resilience definitions found that many definitions failed to consider the abilities of social mechanisms to cope with, withstand, and recover from disasters. There is a need to formulate a practical and operational definition of social resilience and to develop consistent frameworks to adequately measure social resilience in a disaster context (Cuthill et al. 2008; Henly-Shepard et al. 2015). Reaching a consensus on resilience definitions and concepts is often a challenge (Manyena 2006). However, an adaptive social resilience model such as the “5S” model developed by Saja et al. (2018) can serve as a foundational basis for holistic and integrated approach in disaster risk reduction and enables a comprehensive understanding of influences and interconnections between multiple levels of social systems. The dynamic relationships between different social dimensions need to be captured when conceptualizing social resilience, because these are often not considered due to complexity in deconstructing the dynamic resilience features (Saja et al. 2019).
Second, resilience literature in a disaster context is dominated by cross-sectional studies, while the changes in social resilience in different phases of a disaster and the resilience pathway to an emerging disaster have not been investigated in detail in the existent literature. Longitudinal studies should be conducted to understand how the relationships of social resilience evolve in pre- and post-disaster phases, which will offer an understanding of social resilience trajectories and disaster event-based changes in resilience status.
Third, more studies are needed to benchmark key resilience properties such as the “6R” properties discussed in this article. With increasing dominance of the resilience debate in disaster and development policy making and practice, new research needs to align its direction with the sustainable development goals (integrating risk-sensitivity components), which may offer an insight to measuring the thresholds of resilience properties.
Pathway is described in this article as the changes in the level of social resilience along the development timeline and between consequent disaster events.
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We acknowledge the University Grants Commission of Sri Lanka (UGCSL) and Queensland University of Technology (QUT), Australia for providing research scholarship to the first author for undertaking this study.
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Saja, A.M.A., Teo, M., Goonetilleke, A. et al. A Critical Review of Social Resilience Properties and Pathways in Disaster Management. Int J Disaster Risk Sci 12, 790–804 (2021). https://doi.org/10.1007/s13753-021-00378-y
- Community resilience
- Disaster resilience
- Resilience assessment
- Resilience measurement
- Resilience properties