Ian Townend
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View article: Drag acting on suspended sediment increased by microbial colonization
Drag acting on suspended sediment increased by microbial colonization Open
The dynamic interplay between microbial communities and sediment transport shapes continental landscapes and influences particulate matter fluxes across the Earth’s surface. Microbial colonization transforms individual sediment grains into…
View article: Intermittent bank collapse as an inherent control on meandering river morphology
Intermittent bank collapse as an inherent control on meandering river morphology Open
Meandering rivers are a ubiquitous feature worldwide, exhibiting an extraordinary variety of planform patterns. These patterns, from widely observed point bars to alternating bend widening and narrowing, provide compelling evidence of a pu…
View article: Claiming Prestige: Shaping the Future of Artificial Coastal Development"
Claiming Prestige: Shaping the Future of Artificial Coastal Development" Open
Prestige reclamation is defined as coastal reclamation carried out for the purpose of high-end real estate development and luxury recreation. The planiforms of these reclamations are often highly complex ideograms, showcasing the investor’…
View article: Seasonal mobility of transverse finger bars within a mixed sand-gravel bay measured using X-band Radar
Seasonal mobility of transverse finger bars within a mixed sand-gravel bay measured using X-band Radar Open
Transverse finger bars have largely been associated with sandy coasts. Here we show that these features persist within a wider mixed sediment environment, adjacent to a shingle cuspate foreland, which has not been previously reported. Deta…
View article: Anomalous scaling of branching tidal networks in global coastal wetlands and mudflats
Anomalous scaling of branching tidal networks in global coastal wetlands and mudflats Open
Branching networks are key elements in natural landscapes and have attracted sustained research interest across the geosciences and numerous intersecting fields. The prevailing consensus has long held that branching networks are optimized …
View article: Framing resilience to manage complex environmental systems
Framing resilience to manage complex environmental systems Open
The significant challenges of managing complex environmental systems in a changing world are widely acknowledged. There are widespread calls for transformation in our approach and for the adoption of more holistic perspectives. In this pap…
View article: Microbial colonization effects on drag in suspended sediment transport
Microbial colonization effects on drag in suspended sediment transport Open
The dynamic interplay between microbial communities and sediment transport shapes continental landscapes and influences particulate matter fluxes across the Earth’s surface. Microbial colonization, with its ubiquitous presence, transforms …
View article: Seasonal biophysical interactions in tidal marsh evolution: insights from a synchronized dataset in Jiangsu, China
Seasonal biophysical interactions in tidal marsh evolution: insights from a synchronized dataset in Jiangsu, China Open
Introduction Tidal marsh wetlands provide essential and valuable services to the wider interconnected marine and coastal environment, although the complex intertwined processes in morphological evolution remain insufficiently understood ow…
View article: Future sediment transport to the Dutch Wadden Sea under severe sea level rise and tidal range change
Future sediment transport to the Dutch Wadden Sea under severe sea level rise and tidal range change Open
Future sediment transport from the North Sea coasts to the Dutch Wadden Sea for various future sea level scenarios has been studied because it influences the future sand nourishment demand for the maintenance of the coastline and because i…
View article: Exploring nearshore bed dynamics of a mixed beach using the depth of closure conceptual model
Exploring nearshore bed dynamics of a mixed beach using the depth of closure conceptual model Open
Mixed sediment beaches are globally commonplace, yet little is understood of the extent and behaviour of their nearshore zones, potentially underestimating total cross-shore change. This paper is the first study to investigate the lateral …
View article: The influence of river discharge on energy transport in estuaries and its implication for the equilibrium bed profile
The influence of river discharge on energy transport in estuaries and its implication for the equilibrium bed profile Open
In this paper, we revisit the classical energy transport equation for pure tidal flows in estuaries by including the effects of residual water level and freshwater discharge. Starting from the one-dimensional mass and momentum conservation…
View article: Observations from a constantly changing nearshore zone in a mixed sediment bay 
Observations from a constantly changing nearshore zone in a mixed sediment bay  Open
There has been limited exploration of the nearshore zone of mixed sediment beaches despite being widespread globally.  Our work aims to build a more complete picture of coastal change by looking at seabed evolution from the very upper…
View article: Transitions in modes of coastal adaptation: addressing blight, engagement and sustainability
Transitions in modes of coastal adaptation: addressing blight, engagement and sustainability Open
Coastal defences have long provided protection from erosion and flooding to cities, towns and villages. In many parts of the world, continued defence is being questioned due to both environmental, sustainability and economic considerations…
View article: Competitive branching: the morphogenesis of tidal creek networks
Competitive branching: the morphogenesis of tidal creek networks Open
Data and codes used in the paper entitled "Competitive branching: the morphogenesis of tidal creek networks".
View article: Competitive branching: the morphogenesis of tidal creek networks
Competitive branching: the morphogenesis of tidal creek networks Open
Data and codes used in the paper entitled "Competitive branching: the morphogenesis of tidal creek networks".
View article: Competitive branching: the morphogenesis of tidal creek networks
Competitive branching: the morphogenesis of tidal creek networks Open
Data and codes used in the paper entitled "Competitive branching: the morphogenesis of tidal creek networks".
View article: The effects of disturbance on the microbial mediation of sediment stability
The effects of disturbance on the microbial mediation of sediment stability Open
In coastal areas, biofilms are often subject to disturbance by hydrodynamic forcing, bioturbation and human activities. These factors affect the influences biofilms have on the sediment. To reveal these effects, we studied laboratory‐incub…
View article: Linking nearshore morphological change to long term observed sand loss from a mixed sediment beach.
Linking nearshore morphological change to long term observed sand loss from a mixed sediment beach. Open
Few studies focus on the changing morphology of the nearshore zone of mixed sediment beaches, despite the fact that these beaches are found across the world. In the UK, these beaches make up ~25% of the coastline, and are often utilised as…
View article: Introducing a web-based portal to explore the concept of coastal resilience
Introducing a web-based portal to explore the concept of coastal resilience Open
For operational use there is a need to identify a set of measures that quantify the resilience. The ‘CoastRes’ project, a component of the UK Climate Resilience Programme, examined how an operational interpretation of resilience might be a…
View article: Role of abiotic drivers on crab burrow distribution in a saltmarsh wetland
Role of abiotic drivers on crab burrow distribution in a saltmarsh wetland Open
Crab burrows play an important role in saltmarsh wetlands and are a useful indicator of wetland condition. The spatiotemporal distribution of crab burrows varies considerably in tidal wetlands. However, the reasons for these variations are…
View article: Bank Retreat Controls River and Estuary Morphodynamics
Bank Retreat Controls River and Estuary Morphodynamics Open
Understanding and predicting the geomorphological response of fluvial and tidal channels to bank retreat underpins the robust management of water courses and the protection of wetlands.
View article: Role of abiotic drivers on crab burrow distribution in a saltmarsh wetland
Role of abiotic drivers on crab burrow distribution in a saltmarsh wetland Open
Crab burrows play an important role in saltmarsh wetlands and are a useful indicator of wetland condition. The spatiotemporal distribution of crab burrows varies considerably in tidal wetlands. However, the reasons for these variations are…
View article: A Review on Bank Retreat: Mechanisms, Observations, and Modeling
A Review on Bank Retreat: Mechanisms, Observations, and Modeling Open
Bank retreat plays a fundamental role in fluvial and estuarine dynamics. It affects the cross‐sectional evolution of channels, provides a source of sediment, and modulates the diversity of habitats. Understanding and predicting the geomorp…