Search results

Coastal flooding has disastrous consequences on people, infrastructure, properties and the environment. Increasing flood risk as a result of global climate change is a significant concern both within the UK and globally. To counter any potential increase in future flooding, a range of potential management options are being considered. This study aims to explore future coastal management practice for flood alleviation, incorporating the influence of climate change.

The Taf estuary in South West Wales, a macro-tidal estuary which has a history of coastal flooding, was chosen as the case study in this paper to investigate the impact of coastal management interventions such as construction of hard defences, managed realignment or altering land use of affiliated ecosystems such as salt marshes on the complex hydrodynamics and hence flooding of the surrounding areas of the estuary. The study was carried out using a numerical hydrodynamic model of the Taf estuary, developed using the process-based Delft3D modelling software.

The role of the selected management interventions on coastal flooding was investigated using an extreme storm condition, both with and without the impact of future sea level rise. The results highlight the scale of the effect of sea level rise, with the selected management interventions revealing that minimising the increase in flooding in future requires careful consideration of the available options.

This paper explores the highlighted role of coastal management practice in future with the influence of climate change to study how effective alternative methods can be for flood alleviation.

Researchers and practitioners working within transdisciplinary research projects face specific challenges when addressing representation of evidence-based concepts across complex occurrences, particularly when delivering a visitor experience design and documentary film encompassing an extensive cultural and natural heritage timeline period. In this chapter, these challenges are explored from the contrasting points of view of the view of the principal investigator and design lead and the filmmaker and researcher within an ongoing transdisciplinary research project Portalis, which is funded by the ERDF through The Ireland Wales Cooperation Programme.

The Portalis visitor experience design promotes and supports citizen science-based climate action behavioural change within six distinct Irish and Welsh cross-border coastal communities. It explores whether there are any parallels with how we can adapt to climate change now, with a focus on the resilience and innovation evidenced within Waterford's earliest settlements during and after South East Ireland's earlier climate change periods. The design research and the filmic documentation of archaeological and geological surveys is employed to map the story of these early post-glacial settlements 10,000 years ago along the Waterford Estuary. Interwoven through this mapping is a demonstration of how those living along the Estuary are preserving their maritime heritage through citizen science led engagement and community initiatives.

Adding a deep resonance to the research project, singular to Waterford, a new vision is called for; an acknowledgement of Waterford City and its Estuary as an area of unique conservation and growth and a recognition of this much travelled waterway as a designated and protected cultural landscape. A successful transdisciplinary approach creates a rich and accessible resource towards recognising the Estuary's cultural and marine heritage in city planning for the future. In so doing, it broaches the so-called rural-urban divide, adds to the global community of practice and allows for reflection on how urban planning can learn from our past in this context.

In this chapter, I reflect on the impact my Estuary English accent has had on me, both personally and professionally as a former social worker, now social work academic, and the impact it appears to have on others. From parental chastisement for dropping my ‘T’s, attributions of being ‘Cockney’ and ‘Essex’, with associated assumptions made about my educational background, class and indeed my very moral character. My accent appears at times, to disrupt some peoples' presuppositions – about who or what I am. I discuss some of the linguistic features of my accent and some ‘critical accent incidents’. I reflect on the challenges of managing academia as someone with an accent that I argue, is underpinned by gendered and classist assumptions. I argue why a critical focus on accentism remains important, generally and within social work education. The chapter utilises theory from a wide range of disciplines, including cultural theory, linguistics, education studies and autoethnography.

Research over the last 20 years has had a major focus on the ecology of east coast estuaries, including the interaction between coastal seawater and saltmarshes. It is not possible to separate intertidal coastal saltmarshes from the rest of the coastal marine environment as they are involved in a truly interactive system. The significance of this system is attracting increasing attention as the effect of elevated nutrient concentrations on the ecology of the coastal zone has become apparent. It is only when we understand how the various chemical and biological processes influence the flux of nutrients through the estuarine interface between land and sea that any sensible management strategy can be developed.

Measurements of the distribution pattern of several nutrients (ammonia, nitrite, nitrate, and phosphate) and indicators (dissolved oxygen and conductivity) were conducted along the river Coco Solo on the Caribbean coast of Panama. The project investigated the extent to which mangrove forests could act as a vegetative buffer zone between disturbed freshwater sources and coastal water. Upriver freshwater samples were collected in known areas of human disturbance to assess levels of the nutrients near points of origin and exhibited elevated concentrations of nutrients. Samples were taken along the mangrove estuary to study the concentrations of nutrients as they moved through the estuary into the ocean. Expected and observed values were compared to see whether concentration levels of the chemicals exhibited normal dilution patterns. Graphs show that the nutrient levels at the estuary points are significantly lower than expected through normal dilution, indicating the removal of nutrients through another mangrove mediated method. In this way, mangrove forests can act as effective coastal buffers of anthropogenic effects to the ocean environment. Further studies must be done to determine the actual removal mechanisms of nutrients in the mangrove estuarine system.

Estuaries and shallow coastal areas are among the most productive ecosystems in the world, being recognized as important nursery areas for marine fish. The aim of this paper is to provide a comprehensive overview of the causes and consequences of recruitment variability in marine fish, contributing to ecosystem‐based management strategies of estuarine and coastal areas.

The authors conducted a literature review, exploring the role of estuaries as nursery areas for marine fish, and analyzed the connectivity between estuaries and coastal areas, the main processes driving recruitment variability in marine fish during their pelagic (larval) and estuarine residency (juveniles) phases, and how it can be translated into variable coastal stocks.

Recruitment variability in marine fish is still one of the most important issues in marine fisheries ecology. In this paper, the authors demonstrate the potential of several processes for inducing variability in recruitment, including density‐independent mechanisms such as temperature, hydrodynamics, river flow and large‐scale factors, as well as density‐dependent processes, related with food abundance, competition and predation. Lastly, the authors evaluated the connectivity between estuaries and the ocean, and how this relationship can influence coastal stocks in the future. The main findings were analyzed in the context of climate change, which has been demonstrated to influence marine life at the individual, population and ecosystem levels.

This paper is a valuable tool for marine researchers and stakeholders, since it summarizes some of the most important processes that drive recruitment variability in marine fish, and how this information can be used for establishing sustainable ecosystem management programmes.

Participatory geographic information systems (PGIS) have been increasingly employed for decision-making in planning, environmental conservation, zoning, and development. This research explores the use of PGIS and its significant role for environmental zoning plans (EZP). PGIS methodology intends to incorporate local knowledge, increase data access, multiple realities, and bottom-up decision-making in EZP in a very sensitive water body in Southern Sri Lanka.

This research presents the lessons learned from a case study of Madu Ganga estuary in Galle District, Sri Lanka. Madu Ganga is an extraordinarily stretch of water body (an estuary) with abundant natural resources and beauty. In recent years, Madu Ganga has faced serious environmental threats due to increase in human activities leading to overexploitation of natural resources. To protect and manage this valuable environment, a team of geographers from the Center for Environmental Studies, University of Peradeniya, Sri Lanka was invited by the Coastal Resource Management Project to undertake the zoning study. Various participatory methods including PGIS applications were adopted and affected communities were also involved in developing a zoning plan. The study illustrates that the use of PGIS approach is effective in incorporating local people into environmental planning, and it also supports affected people to be actively involved in development activities in their own communities.

To observe the relations between three important factors resulting in estuarial Hypoxia phenomena of Yangtze River – wind, river flow, and stratification. The purpose of the paper is to analyze the possible reasons why hypoxia occurs in late spring and disappears in October.

To overcome the difficulty in examining the role of physical and biological factors affecting hypoxia based on measurement alone, finite-volume community ocean model (FVCOM) was introduced into the investigation. Observed freshwater flux data from Yangtze River, monthly averaged wind speed data, and other observed data were input into the model; the accuracy of which was validated with various kinds of data. The authors used the trajectories of Lagrangian particles from Yangtze River to study the regions of strong riverine influence under different wind forcing conditions and compared the simulation results with former observations.

Trade wind is a significant factor to influence the forming and receding of hypoxia across the Yangtze River.

Using FVCOM to investigate estuary hypoxia is more economical and effective.

The purpose of this paper is to discuss integrative environmental assessments applicable to estuarine sediments, including the advantages and limitations of different lines of evidence that could form part of such assessments and their application to ecosystem services.

Weight of evident framework integrating multiple lines of evidence for sediment quality assessment.

Integrative environmental assessments are required to fully address the risks to resident fauna of anthropogenic contaminants deposited in estuarine sediments.

The paper presents an updated discussion of the methodologies for environmental assessments of contaminated estuarine sediments.

In line with climate variability such as extreme floods and cyclones, siltation is identified as among the most serious environmental problems posed to Chilika Lagoon fisheries. Exposure to silt accumulation reduced the water spread area and hindered the exchange of water between the sea and river, resulted in decreased salinity level and subsequent prolific growth of freshwater invasive species. As a result, fish landing quantities in Chilika Lagoon rapidly decreased until the year 2000, thereby leading to the poorer people not being effectively able to adapt to the ecological-social-economic system. The weed invasion also obstructed passages from boat jetties to fishing grounds, sometimes leading to boat clashes and the subsequent disputes among fishers.