Characterising the vulnerability of fishing households to climate and environmental change: Insights from Ghana

Rural coastal communities in the global south are mostly natural resource-dependent and their livelihoods are therefore vulnerable to the impacts of climate and environmental changes. Efforts to improve their adaptive capacity often prove mal-adaptive due to misunderstanding the dynamics of the unique socioeconomic factors that shape their vulnerability. By integrating theories from climate change vulnerability and the Sustainable Livelihoods Approach, this study draws upon household survey data from a fishing community in Ghana to assess the vulnerability of fishing households to climate change and explore how their vulnerability is differentiated within the community. The findings suggest that household incomes in the last decade have reduced significantly, attributable to an interaction of both climatic and non-climatic factors. Analysis of the characteristics of three vulnerability groups derived by quantile clustering showed that the most vulnerable household group is not necessarily women or poorer households as expected. Rather, it is dynamic and includes all gender and economic class categories in varying proportions depending on the success or failure of the fishing season. The findings suggest furthermore that the factors that significantly differentiates vulnerability between households differ, depending on whether households are categorised by economic class, gender of household-head or vulnerability group. Consequently, the study highlights the importance of looking beyond existing social categorizations like gender and economic classes when identifying and prioritizing households for climate change adaptive capacity building

Climate change impact and adaptation: Lagoonal fishing communities in west Africa

Lagoons are a common feature of the low-lying West African coastline. These lagoons are resource-rich and biodiverse. The small-scale fishing communities, which border them, are dependent on the resources and ecosystem services for their livelihoods and well-being. Climate change has had significant and diverse effects on both the lagoons and their surrounding communities. Sea level rise has caused erosion of the coast and increased the risk of floods. Changes to rainfall patterns have caused shifts in lagoon ecosystems and physical cycles. Of particular relevance to lagoon fishing communities is the fluctuation in quantity and distribution of fish catch that they rely upon for economic livelihood. Understanding the vulnerability of these communities to the effects of climate change is critical to supporting and developing successful adaptations. Using a case study from Ghana, sustainable livelihoods approach (SLA) and vulnerability framework are used to characterize the community vulnerability, giving insight into the temporal and spatial dynamics of vulnerability and how subsections of the community may be identified and prioritized for adaptation interventions. A scalar analysis of the relevant coastal and environmental frameworks and policy to support climate change adaptation in coastal communities reveals the common challenges in implementing adaptation interventions and strategies in the region. A policy gap exists between high level, institutional coastal, and climate directives and implementation of climate adaptations at the local level. That gap might be bridged by a participatory approach that places coastal communities at the center of creating and enacting climate change adaptations

Geology of Caphouse Colliery, Wakefield, Yorkshire, UK

The National Coal Mining Museum in West Yorkshire affords a rare opportunity for the public to visit a former colliery (Caphouse) and experience at first hand the geology of a mine. The geology at the museum can be seen via the public tour, limited surface outcrop and an inclined ventilation drift, which provides the best geological exposure and information. The strata encountered at the site are c. 100 m thick and are of latest Langsettian (Pennsylvanian) age. The ventilation drift intersects several coal seams (Flockton Thick, Flockton Thin, Old Hards, Green Lane and New Hards) and their associated roof rocks and seatearths. In addition to exposures of bedrock, recent mineral precipitates of calcium carbonates, manganese carbonates and oxides, and iron oxyhydroxides can be observed along the drift, and there is a surface exposure of Flockton Thick Coal and overlying roof strata. The coals and interbedded strata were deposited in the Pennine Basin in a fluvio-lacustrine setting in an embayment distant from the open ocean with limited marine influence. A lacustrine origin for mudstone roof rocks of several of the seams is supported by the incidence of non-marine bivalves and fossilized fish remains whilst the upper part of the Flockton Thick Coal consists of subaqueously deposited cannel coal. The mudstones overlying the Flockton Thick containing abundant non-marine bivalves are of great lateral extent, indicating a basin-wide rise of base level following coal deposition that may be compared with a non-marine flooding surface

Repairing a shield tunnel damaged by secondary grouting.

This paper reports on a repair work which has recently been conducted for a metro tunnel in Hefei city, China. The tunnel has been originally constructed using shield method where synchronous grouting was used to fill the gaps between the tunnel segments and soil. Following a regular maintenance inspection of the tunnel, several leakage issues were identified between three stations. Secondary grouting was adopted as a solution to block the tunnel leakage, however, shortly after the start of grouting work, the track and track bed were found to be unevenly uplifted with significant cracks in the tunnel’s segments. The paper describes and discusses key aspects of this case study including ground conditions, leakages patterns of the tunnel, recorded volumes and injection pressure of the secondary grouting, as well as survey data of track displacement and segment cracks. The investigation confirmed that the situation was caused by an inappropriate implementation of the secondary grouting, particularly by high grouting pressure (significantly higher than the geostatic pressure), large volumes of injected grout, and poor selection of grouting locations. Ground Penetrating Radar (GPR) was conducted to inspect the tunnel conditions before commencing the structural repair work, which revealed that there were no voids under the track bed of the affected zone. The study presents simplified strategies used to repair the damage while maintaining minimum disturbance to the affected segments

Climatic Hazards: High Importance but Low Severity to Coastal Rural Fishing Communities

This study examines the relative importance and severity of climate change in the context of multiple socio-economic stressors in rural coastal fishing communities in Ghana. Although climate change poses significant threats to these communities, it is yet unclear where it fits in the range of stressors that shape the vulnerability of such communities. Without an understanding of how vulnerability is experienced by the fishing communities, it is difficult to appreciate what adaptation to climate change means to them and which adaptation options are realistic. Household surveys, interviews, gender and age-group disaggregated focus group discussions and participatory risk mapping were used to assess type, importance and severity of climatic and socio-economic stressors that impinge on the lives and livelihood of the fishing communities. Climatic stressors include erratic rainfall, increased storminess, flooding and high temperatures. Socio-economic stressors include infrastructural (e.g., water and energy insecurity), socio-cultural (e.g., conflicts and land insecurity), occupational (e.g., exploitation, power asymmetries, illegal fishing), and environmental (e.g., plastic waste pollution) factors. The participatory risk maps showed that climatic stressors generally rank higher than all others in importance due to their direct impact on fishing and fish processing activities. However, socioeconomic stressors were more severely felt, especially in major fishing seasons. The study therefore highlights socio-economic stressors as realistic focus for adaptation priorities that can safeguard the lives, livelihood and wellbeing of rural coastal-small scale fishing communities

Virtual mobility to enhance intercultural competencies for a more sustainable future

The UN locates education at the heart of the process to achieve a more sustainable future and deliver the 17 Sustainable Development Goals (UN-SDGs) by 2030. Within this context, this paper outlines the experience of designing and delivering an international virtual mobility workshop which brought together university students from the UK and Ghana. It offers a critical evaluation of the extent to which the workshop's objectives were achieved, through comparison of pre- and post-workshop survey results, with a particular emphasis on changing levels of understanding of the UN-SDGs and the development of key intercultural competencies. The discussion highlights positive trajectories of change in student learning, and the challenges of delivering workshops of this nature. It is concluded that such challenges can be embraced as learning opportunities and that the associated discomfort and uncertainty is important to facilitate impactful learning experiences

Virtual mobility to enhance intercultural competencies for a more sustainable future

The UN locates education at the heart of the process to achieve a more sustainable future and deliver the 17 Sustainable Development Goals (UN-SDGs) by 2030. Within this context, this paper outlines the experience of designing and delivering an international virtual mobility workshop which brought together university students from the UK and Ghana. It offers a critical evaluation of the extent to which the workshop’s objectives were achieved, through comparison of pre- and post-workshop survey results, with a particular emphasis on changing levels of understanding of the UN-SDGs and the development of key intercultural competencies. The discussion highlights positive trajectories of change in student learning, and the challenges of delivering workshops of this nature. It is concluded that such challenges can be embraced as learning opportunities and that the associated discomfort and uncertainty is important to facilitate impactful learning experiences

Geohazard assessment of landslides in south Brazil: Case study

Slope instability phenomena such as mudslides represent a major geohazard in Brazil, which has caused devastation in many states and affected the lives of people, particularly in self-built settlements on steep slopes. This paper presents and discusses slope stability issues encountered in Caxias do Sul in the State of Rio Grande do Sul, which exemplifies the existing situation of landslide risk assessment in southern Brazil. Local geology and ground conditions of the area in relation to slope instability were reviewed and gaps in information required for mitigating risk were identified, such as inadequate geotechnical information and lack of full inspection and continuous monitoring of active landslides. Although risk assessment has been developed for the city and regarded as a fundamental management tool in the mitigation of landslide hazards, the study showed that the risk assessment works are outdated and not effectively considered for the development of the city. With significant unplanned urban expansion (where houses have been self-built on very steep terrains without geotechnical assessment of the ground and slope conditions), new geohazard mapping is essentially required. Several key recommendations were provided for mitigating the destructive effect of landslides and improving their management in mountainous urban settings.Newton Researcher Links (Ref. NRCP1617/6/182) administrated by the Royal Academy of Engineering (RAEng)