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Processes affecting transfer of sediment and colloids, with associated phosphorus, from intensively farmed grasslands: an overview of key issues

Processes affecting transfer of sediment and colloids, with associated phosphorus, from... Introduction The science of the export of sediment and colloids from grassland to water presents many new challenges for hydrologists, soil scientists and environmental chemists, in terms of increasing awareness and pressures to control, reduce and mitigate diffuse pollution from livestock dominated areas (Bechmann et al., 2005; Bennion et al., 2005; Haygarth et al., 2005; Heathwaite et al., 2005a; Neal and Jarvie, 2005). Sediment and colloids are well-established at being efficient ‘carriers’ of rogue pollutants, such as nutrients (particularly phosphorus) (Haygarth et al., 1997; Heathwaite et al., 2005b), metals (Citeau et al., 2001; 2003), pathogens (Oliver et al., 2005a; 2005b) and persistent organic pollutants (POPs) (Gaveo and Jones, 2002). The problem that arises with nutrients is eutrophication, particularly of surface waters (Bennett et al., 2001; Bennion et al., 2005; Hession and Storm, 2000), while pathogens can cause sickness in humans, with an almost immediate effect (Jones, 2002). POPs, on the other hand, have a more long-term influence, presenting threats to ecosystem health and, after passing through the food chain, accumulating in mammalian adipose tissue (McLachlan, 1996). In addition to the carrying of pollutants, sediments and colloids can themselves contribute problems because of soil loss from productive land (soil http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Hydrological Processes Wiley

Processes affecting transfer of sediment and colloids, with associated phosphorus, from intensively farmed grasslands: an overview of key issues

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References (37)

Publisher
Wiley
Copyright
Copyright © 2006 John Wiley & Sons, Ltd.
ISSN
0885-6087
eISSN
1099-1085
DOI
10.1002/hyp.6598
Publisher site
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Abstract

Introduction The science of the export of sediment and colloids from grassland to water presents many new challenges for hydrologists, soil scientists and environmental chemists, in terms of increasing awareness and pressures to control, reduce and mitigate diffuse pollution from livestock dominated areas (Bechmann et al., 2005; Bennion et al., 2005; Haygarth et al., 2005; Heathwaite et al., 2005a; Neal and Jarvie, 2005). Sediment and colloids are well-established at being efficient ‘carriers’ of rogue pollutants, such as nutrients (particularly phosphorus) (Haygarth et al., 1997; Heathwaite et al., 2005b), metals (Citeau et al., 2001; 2003), pathogens (Oliver et al., 2005a; 2005b) and persistent organic pollutants (POPs) (Gaveo and Jones, 2002). The problem that arises with nutrients is eutrophication, particularly of surface waters (Bennett et al., 2001; Bennion et al., 2005; Hession and Storm, 2000), while pathogens can cause sickness in humans, with an almost immediate effect (Jones, 2002). POPs, on the other hand, have a more long-term influence, presenting threats to ecosystem health and, after passing through the food chain, accumulating in mammalian adipose tissue (McLachlan, 1996). In addition to the carrying of pollutants, sediments and colloids can themselves contribute problems because of soil loss from productive land (soil

Journal

Hydrological Processes – Wiley

Published: Dec 30, 2006

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