Development and validation of risk profiles of West African rural communities facing multiple natural hazards

Asare-Kyei, Daniel, Renaud, Fabrice G., Walz, Yvonne and Rhyner, Jakob, (2017). Development and validation of risk profiles of West African rural communities facing multiple natural hazards. PLoS ONE, 12(3), n/a-n/a

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  • Sub-type Journal article
    Author Asare-Kyei, Daniel
    Renaud, Fabrice G.
    Walz, Yvonne
    Rhyner, Jakob
    Title Development and validation of risk profiles of West African rural communities facing multiple natural hazards
    Appearing in PLoS ONE
    Volume 12
    Issue No. 3
    Publication Date 2017-03-01
    Place of Publication San Franscisco
    Publisher PLOS
    Start page n/a
    End page n/a
    Language eng
    Abstract West Africa has been described as a hotspot of climate change. The reliance on rain-fed agriculture by over 65% of the population means that vulnerability to climatic hazards such as droughts, rainstorms and floods will continue. Yet, the vulnerability and risk levels faced by different rural social-ecological systems (SES) affected by multiple hazards are poorly understood. To fill this gap, this study quantifies risk and vulnerability of rural communities to drought and floods. Risk is assessed using an indicator-based approach. A stepwise methodology is followed that combines participatory approaches with statistical, remote sensing and Geographic Information System techniques to develop community level vulnerability indices in three watersheds (Dano, Burkina Faso; Dassari, Benin; Vea, Ghana). The results show varying levels of risk profiles across the three watersheds. Statistically significant high levels of mean risk in the Dano area of Burkina Faso are found whilst communities in the Dassari area of Benin show low mean risk. The high risk in the Dano area results from, among other factors, underlying high exposure to droughts and rainstorms, longer dry season duration, low caloric intake per capita, and poor local institutions. The study introduces the concept of community impact score (CIS) to validate the indicator-based risk and vulnerability modelling. The CIS measures the cumulative impact of the occurrence of multiple hazards over five years. 65.3% of the variance in observed impact of hazards/CIS was explained by the risk models and communities with high simulated disaster risk generally follow areas with high observed disaster impacts. Results from this study will help disaster managers to better understand disaster risk and develop appropriate, inclusive and well integrated mitigation and adaptation plans at the local level. It fulfills the increasing need to balance global/regional assessments with community level assessments where major decisions against risk are actually taken and implemented.
    Copyright Holder The Authors
    Copyright Year 2017
    Copyright type Creative commons
    DOI 10.1371/journal.pone.0171921
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    Created: Thu, 08 Jun 2017, 22:22:13 JST by Aarti Basnyat on behalf of UNU EHS