Search results for: John Boardman

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article

Communicating soil erosion in the UK: How should we present extreme events?

John Boardman

The Geographical Journal > 190 > 2 > n/a - n/a

The presentation of soil erosion on agricultural land, both to the expert and the public, frequently takes the form of pictures and descriptions of extreme events. These attention‐grabbing images are case studies of worst‐case scenarios and serve an important purpose of warning what may happen under certain circumstances; they also have a potential to mislead. On the other hand, long‐term studies...

article

Soil erosion and runoff: The need to rethink mitigation strategies for sustainable agricultural landscapes in western Europe

John Boardman, Karel Vandaele

Soil Use and Management > 39 > 2 > 673 - 685

Agricultural landscapes that are intensively farmed, as in western Europe, face the challenge of a transition to more sustainable systems. Although erosion rates are relatively low in western Europe, the agricultural landscape is confronted by the need to mitigate the off‐site impacts of erosion. An important challenge is that of disrupting connectivity between runoff and sediment sources, often farmers'...

article

A reconnaissance survey of channel bank particulate phosphorus concentrations, controls and estimated contributions to riverine loads across England

Simon Pulley, Yusheng Zhang, Ruth Copeland‐Phillips, Atish N. Vadher, more

Hydrological Processes > 36 > 12 > n/a - n/a

Channel banks can contribute a significant proportion of fine‐grained (<63 μm) sediment to rivers, thereby also contributing to riverine total particulate phosphorus loads. Improving water quality through better agricultural practices alone can be difficult since the contributions from non‐agricultural sources, including channel banks, can generate a ‘spatial mismatch’ between the efficacy of best...

article

Anthropogenic sediment traps and network dislocation in a lowland UK river

Ian D. L. Foster, John Boardman, Jennine L. Evans, Ruth Copeland‐Phillips, more

Earth Surface Processes and Landforms > 47 > 1 > 143 - 158

Farm ponds, reservoirs and in‐stream weirs exist in most lowland UK river catchments and often dominate natural features such as lakes, wetlands, floodplains and debris dams. Artificial structures have served multiple purposes, including provision of power for historic flour milling and iron ore crushing and provision of water for medieval fishponds, canals, crop irrigation and potable supply. Although...

article

Run‐off and sediment storage: The effectiveness of mitigation measures against soil erosion and freshwater pollution

John Boardman, Ian David Leigh Foster

Land Degradation & Development > 32 > 7 > 2453 - 2455

Measures such as detention structures and buffer strips are widely used to limit off‐site damage of run‐off from eroding fields. The effectiveness of such measures varies greatly. However, ‘effectiveness’ is often narrowly defined and ignores the unintended consequences of damage to freshwater systems by sediments and other pollutants. Detention structures and buffer strips retain coarse sediment...

article

Monitoring soil erosion on agricultural land: results and implications for the Rother valley, West Sussex, UK

John Boardman, Tim Burt, Ian Foster

Earth Surface Processes and Landforms > 45 > 15 > 3931 - 3942

Monitoring has played a key role in understanding the rates, extent and frequency of erosion on agricultural land and this includes projects in Switzerland, Germany and the UK. In this case we focus on highly erodible soils in the Rother valley, West Sussex, southern England on which grow a range of arable crops throughout the year. Erosion rates and extent are high, particularly in response to exceptionally...

article

A palaeoenvironmental study of particle size‐specific connectivity—New insights and implications from the West Sussex Rother Catchment, United Kingdom

Ian D.L. Foster, Matilda Biddulph, John Boardman, Ruth Copeland‐Phillips, more

River Research and Applications > 35 > 8 > 1192 - 1202

Connectivity has become an important conceptual and practical framework for understanding and managing sediment transfers across hillslopes, between hillslopes and rivers, and between rivers and other compartments along the river corridor (e.g., reservoirs, channel substrate, and floodplain). Conventionally, connectivity focuses on the quantity of sediment transferred but here, we also consider the...

article

Off‐site impacts of soil erosion and runoff: Why connectivity is more important than erosion rates

John Boardman, Karel Vandaele, Robert Evans, Ian D. L. Foster, more

Soil Use and Management > 35 > 2 > 245 - 256

Off‐site impacts of soil erosion are of greater social and economic concern in Western Europe than on‐site impacts. They fall into two related categories: muddy flooding of properties and ecological impacts on watercourses because of excessive sedimentation and associated pollutants. Critical to these impacts is the connectedness of the runoff and sediment system between agricultural fields and the...

article

Climate impacts on soil erosion and muddy flooding at 1.5 versus 2°C warming

Donal Mullan, Tom Matthews, Karel Vandaele, Iestyn D. Barr, more

Land Degradation & Development > 30 > 1 > 94 - 108

Following the 2015 ‘Paris Agreement’ that seeks to contain global mean temperature increase (GMTI) to well below 2°C and more ambitiously within 1.5°C, recent studies have begun assessing the response of various sectors to these levels of warming. Most studies have so far concentrated on temperature‐sensitive sectors. Given the links between a warmer atmosphere and rainfall intensity, there is also...

article

‘Local gradient’ and between‐site variability of erosion rate on badlands in the Karoo, South Africa

David Favis‐Mortlock, John Boardman, Ian Foster, Philip Greenwood

Earth Surface Processes and Landforms > 43 > 4 > 871 - 883

Site‐average values of local gradient, defined as the steepest slope angle measured at a point, are a powerful predictor of long‐term rates of soil loss as measured by erosion pins on the non‐channel floor portions of ten badland study sites in the Karoo area of South Africa. Local gradient may be easily measured using a smartphone clinometer. The successful use of local gradient here is in strong...

article

Flexibility of System of Systems

Alex Gorod, S. Jimmy Gandhi, Brian Sauser, John Boardman

Global Journal of Flexible Systems Management > 2008 > 9 > 4 > 21-31

In order to remain competitive, organizations have to make themselves accessible to a diversity of alternatives, which could be a direct influence on their flexibility; however, flexibility introduces a new context by which these organizations manage the systems they realize. In this paper, we present a theoretical perspective on the management of flexibility of a type of system called a System of...

article

Frequency of acute longus colli tendinitis on CT examinations

John Boardman, Emanuel Kanal, Patrick Aldred, Joseph Boonsiri, more

Emergency Radiology > 2017 > 24 > 6 > 645-651

Purpose We attempted to determine the frequency of acute longus colli tendinitis on diagnostic CT imaging performed at a large multicenter health care system. By correlating with the pre-imaging clinical information, we investigated which patient presentations should lead the radiologist to increased suspicion for this condition. Methods Images from a total of 8101 adult CT examinations of the neck...

article

Wheat Growing and Changing Farming Systems in South African Dryland Margins: The Case of the Sneeuberg, South Africa

Helen Suich, John Boardman

Land Degradation & Development > 28 > 1 > 57 - 64

The contribution of stock keeping to land degradation in the Karoo has been extensively studied, but other causes have been rarely examined. The paper uses a combination of key informant interviews and a review of published and unpublished documentary sources to describe the history of wheat growing in the Sneeuberg area of the Karoo since European settlement, until the 1970s when annual crop cultivation...

article

Desertification: History, Causes and Options for Its Control

Geert Sterk, John Boardman, Ann Verdoodt

Land Degradation & Development > 27 > 8 > 1783 - 1787

chapter

The Primacy of Paradox

John Boardman

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering > IT Revolutions > Position Papers > 79-110

Our world today is rife with systems and it’s my bet that no amount of revolutions, IT or social, will rid us of them. Au contraire, all of our efforts are being directed at bigger, better, smarter systems. Special effort is being directed at a kind of system that makes ready use of a plethora of existing or legacy systems, having them work together in new ways forming what people are calling a Systems...

article

Modelling the effectiveness of grass buffer strips in managing muddy floods under a changing climate

Donal Mullan, Karel Vandaele, John Boardman, John Meneely, more

Geomorphology > 2016 > 270 > C > 102-120

Muddy floods occur when rainfall generates runoff on agricultural land, detaching and transporting sediment into the surrounding natural and built environment. In the Belgian Loess Belt, muddy floods occur regularly and lead to considerable economic costs associated with damage to property and infrastructure. Mitigation measures designed to manage the problem have been tested in a pilot area within...

article

The value of Google Earth™ for erosion mapping

John Boardman

CATENA > 2016 > 143 > C > 123-127

Google Earth™ (GE) has been used in several geomorphological contexts, especially in the study of river networks, glacial, coastal, landslides and desert landforms. In some cases, quantification is possible and landform-process relations can be inferred. GE has been little used in studies of contemporary soil erosion. This brief case study illustrates the potential for quick, free and accurate surveys...

article

A reply to panagos et al., 2016 (Environmental science & policy 59 (2016) 53–57

Robert Evans, John Boardman

Environmental Science & Policy > 2016 > 60 > C > 63-68

We respond to the article by Panagos et al. in Environmental Science & Policy 2016, 59, 53–57. We first outline the history of assessing water erosion of cultivated land in Britain, to place in context why a model approach has not been considered the best way to assess erosion in Britain. Since 1982 a field- based approach has been consistently chosen. We then consider three particular points...

article

Historical Agriculture and Soil Erosion in the Upper Mississippi Valley Hill Country, Stanley W. Trimble. CRC Press, Taylor and Francis Group, Boca Raton, Florida, USA. 2016. ISBN 978‐1‐4665‐5574‐7 (hardback), 242 pp, £57.99

John Boardman

Land Degradation & Development > 27 > 4 > 1307 - 1307

article

The new assessment of soil loss by water erosion in Europe. Panagos P. et al., 2015 Environmental Science & Policy 54, 438–447—A response

Robert Evans, John Boardman

Environmental Science & Policy > 2016 > 58 > C > 11-15

We respond to an article by Panagos et al.—‘The new assessment of soil loss by water erosion in Europe’ in Environ. Sci. Policy, 2015, 54, 438–447. It is aimed at helping policy makers make better decisions. The assessment uses a Geographical Information Systems approach based on the Revised Universal Soil Loss Equation. RUSLE is based on data gained from plot experiments. The authors assume RUSLE...

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INFONA - science communication portal

Search results for: John Boardman

Communicating soil erosion in the UK: How should we present extreme events?

Soil erosion and runoff: The need to rethink mitigation strategies for sustainable agricultural landscapes in western Europe

A reconnaissance survey of channel bank particulate phosphorus concentrations, controls and estimated contributions to riverine loads across England

Anthropogenic sediment traps and network dislocation in a lowland UK river

Run‐off and sediment storage: The effectiveness of mitigation measures against soil erosion and freshwater pollution

Monitoring soil erosion on agricultural land: results and implications for the Rother valley, West Sussex, UK

A palaeoenvironmental study of particle size‐specific connectivity—New insights and implications from the West Sussex Rother Catchment, United Kingdom

Off‐site impacts of soil erosion and runoff: Why connectivity is more important than erosion rates

Climate impacts on soil erosion and muddy flooding at 1.5 versus 2°C warming

‘Local gradient’ and between‐site variability of erosion rate on badlands in the Karoo, South Africa

Flexibility of System of Systems

Frequency of acute longus colli tendinitis on CT examinations

Wheat Growing and Changing Farming Systems in South African Dryland Margins: The Case of the Sneeuberg, South Africa

Desertification: History, Causes and Options for Its Control

The Primacy of Paradox

Modelling the effectiveness of grass buffer strips in managing muddy floods under a changing climate

The value of Google Earth™ for erosion mapping

A reply to panagos et al., 2016 (Environmental science & policy 59 (2016) 53–57

Historical Agriculture and Soil Erosion in the Upper Mississippi Valley Hill Country, Stanley W. Trimble. CRC Press, Taylor and Francis Group, Boca Raton, Florida, USA. 2016. ISBN 978‐1‐4665‐5574‐7 (hardback), 242 pp, £57.99

The new assessment of soil loss by water erosion in Europe. Panagos P. et al., 2015 Environmental Science & Policy 54, 438–447—A response

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