Deonie Allen

Deonie Allen
University of Strathclyde · Centre for Water, Environment, Sustainability and Public Health (WESP)

BSc, MSc, PhD

About

51
Publications
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1,612
Citations

Publications

Publications (51)
Article
The existence of nano sized plastic (NP) has been discussed heavily in recent years, however physical proof from environmental samples and direct comparisons to characterized microplastics is limited. Here we compare microplastic (MP) particles and counts (>10µm) to NP particle (<0.45µm) mass concentrations from deposition at a remote field site in...
Article
The discovery of atmospheric micro(nano)plastic transport and ocean–atmosphere exchange points to a highly complex marine plastic cycle, with negative implications for human and ecosystem health. Yet, observations are currently limited. In this Perspective, we quantify the processes and fluxes of the marine-atmospheric micro(nano)plastic cycle, wit...
Article
Full-text available
The last decade has been transformative for micro(nano)plastic (MnP) research with recent discoveries revealing the extent and magnitude of MnP pollution, even in the world’s most remote places. Historically, while researchers recognized that most plastic pollution was derived from land-based sources, it was generally believed that microplastic par...
Article
The cryosphere is the term used to describe the frozen areas of the Earth, including all forms of snow and ice, which are primarily influenced by anthropogenic pollutants through atmospheric transport. In this review, we described the current status of newly emergent pollutant-microplastics-in the snow and ice of typical cryospheric regions (e.g.,...
Article
The problems of plastic pollution are increasing and have been linked to sustainability efforts. Some communities have tried to tackle this issue by implementing ‘plastic free’ initiatives, such as the ‘Plastic Free Community’. Community initiatives foster change and encourage improved environmental outcomes; however, it is unclear if ‘plastic free...
Article
Full-text available
The emerging threat of atmospheric microplastic pollution has prompted researchers to study areas previously considered beyond the reach of plastic. Investigating the range of atmospheric microplastic transport is key to understanding the global extent of this problem. While atmospheric microplastics have been discovered in the planetary boundary l...
Article
Full-text available
Ombrotrophic peatland-fed solely from atmospheric deposition of nutrients and precipitation-provide unique archives of atmospheric pollution and have been used to illustrate trends and changes in atmospheric trace element composition from the recent decadal to the Holocene period. With the acknowledgment of atmosphere plastic pollution, analysis of...
Article
Only 12% of the world’s published plastic research includes references to Africa despite it being a significant contributor to the global plastic waste and mismanagement problem (~88.5% of Africa’s plastic waste is mis-managed). Ocean plastics are transported from land by rivers to the sea. However, source contextualization is complex. Many African...
Article
Microplastics are globally prevalent on a large scale in various marine and terrestrial environments, including Arctic snow and precipitation in protected areas of the United Sates. However, reports of microplastics from glaciers are rare, especially for the Tibetan Plateau (TP), which is widely known as the world's Third Pole and Asian Water Tower...
Article
Microplastics are ubiquitous in the environment, with high concentrations being detected now also in river corridors and sediments globally. Whilst there has been increasing field evidence of microplastics accumulation in the guts and tissues of freshwater and marine aquatic species, the uptake mechanisms of microplastics into freshwater food webs,...
Article
Full-text available
Global plastic litter pollution has been increasing alongside demand since plastic products gained commercial popularity in the 1930’s. Current plastic pollutant research has generally assumed that once plastics enter the ocean they are there to stay, retained permanently within the ocean currents, biota or sediment until eventual deposition on the...
Chapter
The mineral reserves of mountain environments have been exploited since the beginning of metallurgy and legacy contamination from activities such as mining persist to this day. This is particularly the case in the soils of the European mountains where potential harmful trace elements (such as Pb, Sb, As, and Hg) of anthropogenic origin have accumul...
Article
Full-text available
Microplastics have recently been detected in the atmosphere of urban, suburban, and even remote areas far away from source regions of microplastics, suggesting the potential long-distance atmospheric transport for microplastics. There still exist questions regarding the occurrence, fate, transport, and effect of atmospheric microplastics. These que...
Article
Reconstruction of paleo-precipitation can provide an insight into past climate and precipitation. De Ploey et al. (1995) presents a highly simplified erosion equation to consider precipitation and erosion susceptibility. This empirical model allows estimation of total precipitation and erosion susceptibility across a range of catchment characterist...
Article
Full-text available
In the version of this Article originally published, the following text was missing from the Acknowlegements: ‘CESBIO OHM Bernadouze weather station is supported by the Observatoire Spatial Régional (CNRS-INSU) and CNES-TOSCA funding was awarded to S. Gascoin. This scientific work was made possible with the logistical support of the ONF (French Nat...
Article
Full-text available
Soil redox potential (Eh) and pH are fundamentals parameters for plants growth. Measuring soil Eh is essential but complex due to the lack of measurement reliability resulting from high temporal variability and metrological challenges. This paper proposes practical advancements for measuring Eh in aerobic soils using combined electrodes (improvemen...
Article
Full-text available
Plastic litter is an ever-increasing global issue and one of this generation’s key environmental challenges. Microplastics have reached oceans via river transport on a global scale. With the exception of two megacities, Paris (France) and Dongguan (China), there is a lack of information on atmospheric microplastic deposition or transport. Here we...
Article
Full-text available
The influence of long-term suspended sediment dynamics on stormwater pond performance is not negligible, but often neglected in pond design and performance evaluation. This paper provides systematic simulated quantification of long-term suspended sedimentological effects on stormwater pond performance. Integrated hydrological and two-dimensional hy...
Article
The influence of long-term suspended sediment dynamics on stormwater pond performance should not be ignored, but is often neglected in pond design and performance evaluation. This paper provides systematic simulated quantification of long-term suspended sedimentological effects on stormwater pond performance. Integrated hydrological and two-dimensi...
Article
The availability of historical streamflow data of the desired length is often limited and, in these situations, the ability to synthetically generate statistically significant datasets becomes important. We previously developed a highly efficient stochastic modelling approach for the synthetic generation of daily streamflow sequences using the syst...
Article
This study investigated the delivery of contaminated sediments to the channel network by urban drainage systems in Johnson Creek in Oregon, USA. Concentrations of five heavy metal concentrations measured in 136 samples collected from 37 stormwater outfalls and 99 bed sampling points were analysed. While concentrations of zinc, cadmium and lead incr...
Article
Full-text available
It is necessary to understand Sustainable urban Drainage Systems (SuDS) sediment retention efficiencies to fully comprehend SuDS pollution removal properties and urban sediment movement from source-to sink. This research presents the detention and transport of a single tagged sediment release through four SuDS devices over 12 months, with the aim o...
Article
Full-text available
It is necessary to understand Sustainable urban Drainage Systems (SuDS) sediment retention efficiencies to fully comprehend SuDS pollution removal properties and urban sediment movement from source-to sink. This research presents the detention and transport of a single tagged sediment release through four SuDS devices over 12 months, with the aim o...
Poster
Full-text available
From the top of trees down to the bedrock, the critical zone describes the earth’s surface layer where rock, soil, water, air, and living organisms interact. In mountains, the critical zone (MCZ) is especially complex and highly sensitive to global changes. For the research community, the MCZ can function as a sentinel of climate and anthropic in...
Conference Paper
Lacustrine records have been analysed for Lake Arbu to consider if Holocene and/or Anthropocene drivers can be disentangled in describing catchment erosion fluxes and precipitation over the last century. Lake Arbu is located in a Mountain Critical Zone within the French Pyrenees and presents an ideal study site for natural and anthropic influence o...
Poster
Full-text available
Stormwater runoff pollutants are typically influenced by physical, biological, and anthropogenic characteristics of the catchment. To understand the pollutant loads to the river via stormwater, we examined concentrations of five metals in sediment ([Lead (Pb), Zinc (Zn), Copper (Cu), Chromium (Cr), and Cadmium (Cd)] locations along the Johnson Cree...
Conference Paper
Full-text available
Natural Flood Management (NFM) practice includes catchment woodland as a technique for potential attentuation of runoff to mitigate downstream flooding and provide multiple ecosystem services (e.g. habitat, amenity). The Scottish Forestry Strategy (2006) aims to increase forest cover from 17.1% to 25% of Scotland’s land area by the second half of t...
Article
Permeable pavements play an essential role in urban drainage systems, making them a subject of great interest to both researchers and practitioners. The majority of studies, however, have demonstrated a significant degree of uncertainty regarding both the operational performance and maintenance requirements of this type of pavement. This paper desc...
Article
Full-text available
Adsorption is a key water pollution remediation measure used to achieve stormwater quality improvement in Sustainable urban Drainage Systems (SuDS). The level of contamination of detained sediment within SuDS assets is not well documented, with published investigations limited to specific contaminant occurrence in ponds, wetlands or infiltration de...
Poster
Full-text available
Scottish Water Research Poster Competition supported by The Centre for Research Expertise in Scotland
Article
Full-text available
A key design criterion of sustainable urban drainage systems is to mitigate urban stormwater pollution. Current research defines sustainable urban drainage systems (SuDS) pollutant treatment efficiency through the detention of total suspended solids, urban nutrients and heavy metal pollutants within the system during a design flow event, with resea...
Article
Full-text available
Natural Flood Management (NFM) techniques aim to reduce downstream flooding by storing and slowing the flow of stormwater to river channels. These techniques include a range of measures, including setback stormwater outfalls and the physical restoration of channels and floodplains, to improve the natural functioning of catchments. An additional ben...
Presentation
Full-text available
Stochastic modelling approach for synthesizing streamflow S. Patidar, A. Deonie, G. Pender and H. Haynes Institute for Infrastructure and Environment, Heriot-Watt University, Edinburgh, Scotland, UK ABSTRACT: Practitioners are keen to maximize long-term sustainability of flood risk management (FRM) projects, such as simulation of the morphological...
Article
Permeable pavements play an essential role in urban drainage systems, making them the subject of great interest to both researchers and practitioners. However, previous studies have demonstrated a significant degree of uncertainty regarding both the hydrological performance and the maintenance requirements of this type of pavement. Within this cont...
Article
Full-text available
With research to suggest that urban greenspace use can affect the health and wellbeing of adults, it is important to investigate this association in children. Compared with factors such as physical activity, research considering greenspace and its association with the health and wellbeing of children from urban areas is relatively rare. This study...
Conference Paper
Full-text available
A Blue-Green City aims to recreate a naturally-oriented water cycle while contributing to the amenity of the city by bringing water management and green infrastructure together. The Blue-Green approach is more than a stormwater management strategy aimed at improving water quality and providing flood risk benefits. It can also provide important ecos...
Article
The transport of woody debris from urban surfaces, through local urban waterways, to constriction and blockage risk locations is not well understood. Flume trials have identified debris and watercourse dimensions as influential factors on debris movement, and large woody debris movement has been traced in the natural rural environment using time se...
Poster
Full-text available
Outfalls represent points of discharge to a river and often contain pollutants from urban runoff, such as heavy metals. Additionally, erosion around the outfall site results in increased sediment generation and the release of associated pollutants. Water quality impacts from heavy metals pose risks to the river ecosystem (e.g. toxicity to aquatic h...
Article
Full-text available
Vegetated swales are an accepted and commonly implemented sustainable urban drainage system in the built urban environment. Laboratory and field research has defined the effectiveness of a vegetated swale in sediment detention during a single rainfall-runoff event. Event mean concentrations of suspended and bed load sediment have been calculated us...
Conference Paper
Full-text available
Sustainable urban drainage systems (SuDS) are an increasingly implemented ‘natural’ blue and green stormwater management option. These systems are expected to provide conveyance, flood risk alleviation and water quality improvement to the urban and developing environment. While research to define the event based stormwater pollutant removal benefit...
Article
Full-text available
It is recognised that the blockage of culverts by woody debris can result in an increased risk of infrastructure damage and flooding. To date, debris transport analysis has focused on regional fluvial systems and large woody debris, both in flume and field experiments. Given the social and economic risk associated with urban flooding, and as urban...
Conference Paper
Full-text available
A Blue-Green City aims to recreate a naturally-oriented water cycle while contributing to the amenity of the city by bringing water management and green infrastructure together. The Blue-Green approach is more than a stormwater management strategy aimed at improving water quality and providing flood risk benefits. It can also provide important ecos...
Conference Paper
Full-text available
Vegetated sustainable urban drainage systems (SuDS) are becoming more prominent within the urban form as an aesthetic and functional mitigation strategy for flood risk and stormwater management. Within the UK at present, SuDS are predominantly constructed to meet specific design event discharges for flood risk management purposes. The multiple bene...
Conference Paper
Full-text available
Debris movement and deposition resulting in culvert blockage, infrastructure damage and increased flooding is an known cause and effect in hydraulic analysis. The prediction of urban and small watercourse debris movement, both quantity and risk, has undergone only limited analysis predominantly due to lack of field data availablity. This paper desc...

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Projects

Projects (7)
Project
The primary aim of this research is to identify the global atmospheric MP prevalence and uncover the historic trend in atmospheric MP deposition. In essence, this research is designed to unearth the history of atmospheric MP deposition.
Project
Create survey systems and techniques for a pan Africa litter survey. Innitial surveys are being conducted in Port elizabeth with the Sustainable Seas Trust and the Nelson Mandela University.
Project
La Voi Du Pole expedition to cross the Arctic ocean via the pole on a sailing catermeran will take samples in the search for the extent of microplastics in the Arctic. The three month voyage will take the boat 3000km across the ice.