Climate change will have pervasive effects on the world’s coasts, but at broad scales these chang... more Climate change will have pervasive effects on the world’s coasts, but at broad scales these changes have typically proven difficult to analyse in a quantifiable manner. Consequently, individual management decisions are often taken without consideration of the wider, regional coastal system with its physical linkages between geomorphological elements.
This study develops a definition of what mangrove-fisheries can encompass, incorporating a broad ... more This study develops a definition of what mangrove-fisheries can encompass, incorporating a broad range of their possible characteristics. A detailed case study was conducted to develop a typology of mangrove-fishing in the Perancak Estuary, Bali, Indonesia, using interview surveys to investigate the fishing activities associated with mangroves. This case study demonstrated the complexity that a mangrove-fishery can entail, where fishing is connected to the mangrove forest by fishers of multiple sectors, functions, locations and temporal scales. Through a comparison with other mangrove-fishing communities in Bali, it also highlighted that mangrove-fisheries are variable even when in close proximity. With particular reference to this case study, a framework was developed as a flexible tool for identifying the multiple dimensions of a mangrove-fishery in a local context. Following this framework should encourage researchers and managers to look outside of the groups of fishers traditio...
Vegetated shorelines have been increasingly recognized for their contribution to natural coastal ... more Vegetated shorelines have been increasingly recognized for their contribution to natural coastal protection due to their ability to dissipate wave energy. Within the UK, salt marshes are beginning to be included in flood defence schemes. Predicting wave dissipation over vegetation requires accurate representation of salt marsh canopies and the feedback relationship between vegetation and wave conditions. We present a modification to the SWAN vegetation model, which includes a variable drag coefficient and a spatially varying vegetation height. Its application is demonstrated by modelling wave propagation over UK salt marshes. The third generation wave model, SWAN includes a vegetation module for calculation of wave attenuation over vegetation. Wave dissipation is determined based on the vegetation properties and a drag coefficient. This drag coefficient, C_D, is used to calibrate the model, and a fixed value is used per model run. Empirically the drag coefficient has been found to v...
Risks relating to water oversupply (eg: extreme flood events) and undersupply (eg: drought) first... more Risks relating to water oversupply (eg: extreme flood events) and undersupply (eg: drought) first appeared in the World Economic Forum’s ‘Top 5 Global Risks’ in 2011 and have persisted in every year since then. Erosion and flooding resulting from events such as Hurricane Sandy or the UK’s 2013/14 winter storms demonstrate how the sum of impact and consequence can be especially severe at the coast. Often, erosion and flooding risks are analysed separately owing to complex relationships between driving processes, morphological response and risk receptors. This complexity makes it difficult to extract general rules for erosion-flooding interaction; rather it demands detailed longitudinal studies with explicit attention to local setting.
1. The Nature of Physical Geography Today 2. The Nature of Global Environmental Change 3. The Cha... more 1. The Nature of Physical Geography Today 2. The Nature of Global Environmental Change 3. The Challenges for Physical Geography 4. High Latitudes: Ozone Depletion, Climate Change, Permafrost Degradation 5. Mid-Latitudes: Climate, Land Cover and Desertification 6. Low Latitudes: Forest Climates, Deforestation and Environmental Change 7. The Uncertain Environmental Future
Physical processes are thought to be a critical control on shallow water communities in the tropi... more Physical processes are thought to be a critical control on shallow water communities in the tropics. Past studies of seagrass community patterns have tended to be qualitative and failed to empirically link observed structures with the processes that govern them. Remote sensing technology, in the form of imagery acquired using a Compact Airborne Spectrographic Imager (CASI), has been used to
Climate change will have pervasive effects on the world’s coasts, but at broad scales these chang... more Climate change will have pervasive effects on the world’s coasts, but at broad scales these changes have typically proven difficult to analyse in a quantifiable manner. Consequently, individual management decisions are often taken without consideration of the wider, regional coastal system with its physical linkages between geomorphological elements.
This study develops a definition of what mangrove-fisheries can encompass, incorporating a broad ... more This study develops a definition of what mangrove-fisheries can encompass, incorporating a broad range of their possible characteristics. A detailed case study was conducted to develop a typology of mangrove-fishing in the Perancak Estuary, Bali, Indonesia, using interview surveys to investigate the fishing activities associated with mangroves. This case study demonstrated the complexity that a mangrove-fishery can entail, where fishing is connected to the mangrove forest by fishers of multiple sectors, functions, locations and temporal scales. Through a comparison with other mangrove-fishing communities in Bali, it also highlighted that mangrove-fisheries are variable even when in close proximity. With particular reference to this case study, a framework was developed as a flexible tool for identifying the multiple dimensions of a mangrove-fishery in a local context. Following this framework should encourage researchers and managers to look outside of the groups of fishers traditio...
Vegetated shorelines have been increasingly recognized for their contribution to natural coastal ... more Vegetated shorelines have been increasingly recognized for their contribution to natural coastal protection due to their ability to dissipate wave energy. Within the UK, salt marshes are beginning to be included in flood defence schemes. Predicting wave dissipation over vegetation requires accurate representation of salt marsh canopies and the feedback relationship between vegetation and wave conditions. We present a modification to the SWAN vegetation model, which includes a variable drag coefficient and a spatially varying vegetation height. Its application is demonstrated by modelling wave propagation over UK salt marshes. The third generation wave model, SWAN includes a vegetation module for calculation of wave attenuation over vegetation. Wave dissipation is determined based on the vegetation properties and a drag coefficient. This drag coefficient, C_D, is used to calibrate the model, and a fixed value is used per model run. Empirically the drag coefficient has been found to v...
Risks relating to water oversupply (eg: extreme flood events) and undersupply (eg: drought) first... more Risks relating to water oversupply (eg: extreme flood events) and undersupply (eg: drought) first appeared in the World Economic Forum’s ‘Top 5 Global Risks’ in 2011 and have persisted in every year since then. Erosion and flooding resulting from events such as Hurricane Sandy or the UK’s 2013/14 winter storms demonstrate how the sum of impact and consequence can be especially severe at the coast. Often, erosion and flooding risks are analysed separately owing to complex relationships between driving processes, morphological response and risk receptors. This complexity makes it difficult to extract general rules for erosion-flooding interaction; rather it demands detailed longitudinal studies with explicit attention to local setting.
1. The Nature of Physical Geography Today 2. The Nature of Global Environmental Change 3. The Cha... more 1. The Nature of Physical Geography Today 2. The Nature of Global Environmental Change 3. The Challenges for Physical Geography 4. High Latitudes: Ozone Depletion, Climate Change, Permafrost Degradation 5. Mid-Latitudes: Climate, Land Cover and Desertification 6. Low Latitudes: Forest Climates, Deforestation and Environmental Change 7. The Uncertain Environmental Future
Physical processes are thought to be a critical control on shallow water communities in the tropi... more Physical processes are thought to be a critical control on shallow water communities in the tropics. Past studies of seagrass community patterns have tended to be qualitative and failed to empirically link observed structures with the processes that govern them. Remote sensing technology, in the form of imagery acquired using a Compact Airborne Spectrographic Imager (CASI), has been used to
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