635 research outputs found

    Trajectories of social vulnerability during the Soufrière Hills volcanic crisis

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    When some active volcanoes enter into an eruptive phase, they generate a succession of hazard events manifested over a multi-year period of time. Under such conditions of prolonged risk, understanding what makes a population vulnerable to volcanic threats is a complex and nuanced process, and must be analysed within the wider context of physical events, decisions, actions and inactions which may have accentuated the social differentiation of impacts. Further, we must acknowledge the temporal component of vulnerability, therefore our analyses must go beyond a transitory view to an understanding of the dynamics of vulnerability, particularly how inherent socio-economic conditions drive vulnerability today, and how patterns of vulnerability shift during the course of a long-lived crisis

    Post-disaster recovery and sociocultural change: rethinking social capital development for the new social fabric

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    The post-disaster period is critical for reducing vulnerability and building resilience. Social capital plays an important role in generating and maintaining risk reducing behaviour and a rich evidence base demonstrating its contribution to the recovery process exists. Yet, so far little distinction has been made between the different types of social capital, despite important variations of outcomes. To address this gap, this article examines the evolving roles of specific forms of social capital on the long-term post-disaster recovery process. We explore the disaster recovery process on the active volcanic island of Montserrat in the Caribbean, marked by rapid and intense post-disaster demographic change following the beginning of the eruption in 1995. We explore the challenges of the shift from a relatively homogenous to a relatively diverse population for building a resilient society. Our investigation illustrates the complexity of the recovery process and the coexistence of conflicting objectives which, if poorly managed, can create new forms of vulnerability and impede the sustainability of the development process. We argue that not all forms of social capital development are beneficial for the long-term recovery process. In a diversifying society, bonding social capital may have perverse effect while bridging and linking social capital may be key for building social cohesion, a key contributor to sustainable development. We argue that measures for re-development should be sensitive to the long-term effects of different forms of social capital, in particular their consequences for building social cohesion, a key contributor to sustainable recovery in a dynamically changing society

    Remembering, forgetting, and absencing disasters in the post-disaster recovery process

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    Sustainable post-disaster recovery implies learning from past experience in order to prevent recreating forms of vulnerability. Memory construction supports both the healing process and redevelopment plans. Hence, memory of disaster results from the balance between remembering, forgetting, and absencing elements of the disaster, and can be both a tool and an obstacle to sustainable recovery. We explore here how collective memory is built in a post-disaster context to respond to the needs of this critical period, and how it shapes recovery. This ethnographic study, conducted between 2015 and 2017, explores the recovery processes in Montserrat, a small Caribbean island affected by an extended volcanic crisis from 1995 to 2010. Although this study does not give tangible solutions for disaster risk reduction in a post-disaster context, it highlights potential obstacles for learning from a disaster and how they may be surmounted. We argue that it is crucial to acknowledge evolving collective memory in order to implement effective measures for preserving and sharing a shared understanding of disaster across generations and social groups in a way that supports disaster risk awareness. We also maintain that acknowledging the dilemma faced by authorities and disaster management agencies during a period of conflicting needs may encourage the reconsideration of risk framing, and hence reveal how to improve implementation of disaster risk reduction measures

    Investigating the Effects of Climate Change on the Phenology of Achillea millefolium, Aquilegia coerulea, and Penstemon cyanocaulis

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    As the effects of climate change are starting to unearth themselves, the impacts can be observed by tracking the patterns of cyclical natural phenomena also known as phenology, and monitoring how they have changed over time. These cycles are at the crux of making ecosystems viable for their local biodiversity, and understanding the ongoing change allows for further understanding of the ecosystem’s change over time. In this study, we look at the ordinal flowering dates of the Achillea millefolium, Aquilegia coerulea, and Penstemon cyanocaulis over the past century. Our data give insight into how warmer temperatures occurring earlier in the year are changing the cycle of flowering plants in the western United States. This framework encourages more investigation into the changes in plant phenology throughout different regions due to climate change

    Signals of tree volume and temperature in a high-resolution record of pollen accumulation rates in northern Finland

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    International audiencePollen accumulation rates (PARs) provide a potential proxy for quantitative tree volume (m3 ha 1) reconstruction with reliable absolute pollen productivity estimates (APPEs). We obtained APPEs for pine, spruce and birch at their range limits in northern Finland under two temperature periods ('warm' and 'cold') based on long-term pollen trap and tree volume records within a 14-km radius of each trap. APPEs (mean SE; 108 grains m 3 a 1) tend to be higher for the 'warm' periods (pine 123.8 24.4, birch 528.0 398.4, spruce 434.3 113.7) compared with the 'cold' periods (pine 95.5 37.3, birch 317.3 282.6, spruce 119.6 37.6), although the difference is only significant for spruce. Using an independent temperature record and the APPEs obtained, we reconstruct a low-frequency record of pine volume changes over the last 1000 years at Palomaa mire, where a high-resolution record of Pinus PARs is available. Five phases are distinguished in the reconstruction: moderate pine volume, AD 1080-1170; high volume, AD 1170-1340; low volume, AD 1340-1630; very low volume, AD 1630-1810; and rising pine volume, AD 1810- 1950. These phases do not coincide with periods of high or low June-July-August temperatures, and thus appear to reflect regional variations in tree volume, while high-frequency changes within each time-period block show variations in PARs in response to temperatur

    Paclitaxel-Induced Apoptosis Is BAK-Dependent, but BAX and BIM-Independent in Breast Tumor

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    Paclitaxel (Taxol)-induced cell death requires the intrinsic cell death pathway, but the specific participants and the precise mechanisms are poorly understood. Previous studies indicate that a BH3-only protein BIM (BCL-2 Interacting Mediator of cell death) plays a role in paclitaxel-induced apoptosis. We show here that BIM is dispensable in apoptosis with paclitaxel treatment using bim−/− MEFs (mouse embryonic fibroblasts), the bim−/− mouse breast tumor model, and shRNA-mediated down-regulation of BIM in human breast cancer cells. In contrast, both bak−/− MEFs and human breast cancer cells in which BAK was down-regulated by shRNA were more resistant to paclitaxel. However, paclitaxel sensitivity was not affected in bax−/−MEFs or in human breast cancer cells in which BAX was down-regulated, suggesting that paclitaxel-induced apoptosis is BAK-dependent, but BAX-independent. In human breast cancer cells, paclitaxel treatment resulted in MCL-1 degradation which was prevented by a proteasome inhibitor, MG132. A Cdk inhibitor, roscovitine, blocked paclitaxel-induced MCL-1 degradation and apoptosis, suggesting that Cdk activation at mitotic arrest could induce subsequent MCL-1 degradation in a proteasome-dependent manner. BAK was associated with MCL-1 in untreated cells and became activated in concert with loss of MCL-1 expression and its release from the complex. Our data suggest that BAK is the mediator of paclitaxel-induced apoptosis and could be an alternative target for overcoming paclitaxel resistance

    Coral reef ecosystem services in the Anthropocene

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    Coral reefs underpin a range of ecosystem goods and services that contribute to the well‐being of millions of people. However, tropical coral reefs in the Anthropocene are likely to be functionally different from reefs in the past. In this perspective piece, we ask, what does the Anthropocene mean for the provision of ecosystem services from coral reefs? First, we provide examples of the provisioning, regulating, cultural and supporting services underpinned by coral reef ecosystems. We conclude that coral reef ecosystem service research has lagged behind multidisciplinary advances in broader ecosystem services science, such as an explicit recognition that interactions between social and ecological systems underpin ecosystem services. Second, drawing on tools from functional ecology, we outline how these social–ecological relationships can be incorporated into a mechanistic understanding of service provision and how this might be used to anticipate future changes in coral reef ecosystem services. Finally, we explore the emergence of novel reef ecosystem services, for example from tropicalized coastlines, or through changing technological connections to coral reefs. Indeed, when services are conceived as coming from social–ecological system dynamics, novelty in services can emerge from elements of the interactions between people and the ecosystem. This synthesis of the coral reef ecosystem services literature suggests the field is poorly prepared to understand the changing service provision anticipated in the Anthropocene. A new research agenda is needed that better connects reef functional ecology to ecosystem service provision. This research agenda should embrace more holistic approaches to ecosystem service research, recognizing them as co‐produced by ecosystems and society. Importantly, the likelihood of novel ecosystem service configurations requires further conceptualization and empirical assessment. As with current ecosystem services, the loss or gain of services will not affect all people equally and must be understood in the context in which they occur. With the uncertainty surrounding the future of coral reefs in the Anthropocene, research exploring how the benefits to people change will be of great importance

    Global Mapping of Citizen Science Projects for Disaster Risk Reduction

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    Citizen science for disaster risk reduction (DRR) holds huge promise and has demonstrated success in advancing scientific knowledge, providing early warning of hazards, and contributed to the assessment and management of impacts. While many existing studies focus on the performance of specific citizen science examples, this paper goes beyond this approach to present a systematic global mapping of citizen science used for DRR in order to draw out broader insights across diverse methods, initiatives, hazards and country contexts. The systematic mapping analyzed a total of 106 cases of citizen science applied to DRR across all continents. Unlike many existing reviews of citizen science initiatives, relevance to the disaster risk context led us to ‘open up’ our mapping to a broader definition of what might constitute citizen science, including participatory research and narrative-based approaches. By taking a wider view of citizen science and opening up to other disciplinary practices as valid ways of knowing risks and hazards, we also capture these alternative examples and discuss their relevance for aiding effective decision-making around risk reduction. Based on this analysis we draw out lessons for future research and practice of citizen science for DRR including the need to: build interconnections between disparate citizen science methods and practitioners; address multi-dimensionality within and across hazard cycles; and develop principles and frameworks for evaluating citizen science initiatives that not only ensure scientific competence but also attend to questions of equity, responsibility and the empowerment of those most vulnerable to disaster risk

    Improving the Graphical User Interface (GUI) for the Dynamic Feedback Signal Set (DyFSS): Increasing Accessibility for the Neurodiverse

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    Peripheral biofeedback is an explicit learning tool that allows for real-time evaluation and control of physiological proxies by means of computerized signals. Its integration into health practice allows users to calibrate self-awareness and self regulation then apply these skills to everyday life. People with neurodevelopmental differences encounter limitations when using commercially available clinical biofeedback due to variation in their autonomic response. Principles of Universal Design dictate that biofeedback inputs and displays allow effective access and benefit for as many individuals as possible. Our Dynamic Feedback Signal Set (DyFSS, nonprovisional patent-in-process) algorithm adjusts signal processing by dynamically weighting feedback signals to the best abilities of the user, increasing the efficacy of biofeedback for the neurodiverse. The software includes an interactive graphical tutorial and quiz, a variety of graphical user interfaces to honor individual preferences and abilities, and a game that can be played by blind and hard of hearing individuals alike
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