Phosphorus dynamics observed through increasing scales in a nested headwater-to-river channel study

Haygarth, P. M.; Wood, F. L.; Heathwaite, A. Louise; Butler, P. J.

doi:10.1016/j.scitotenv.2005.02.007

Cited by 85 publications

(66 citation statements)

References 42 publications

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“…This suggested that nitrogen should be considered in priority for local water pollution abatement. Many studies argued that water quality in rivers varied from upside to downside with a degrading trend due to the hydraulic droving (Haygarth et al 2005;Jarvie et al 2008). However, in this study less variation was found in nutrients concentrations between sites located upside and downside of cities respectively (Sites 5, and 6; Sites 8 and 9).…”

Section: Discussioncontrasting

confidence: 67%

Effects of anthropogenic activities on chemical contamination within the Grand Canal, China

Wang¹,

Han²,

Xu³

et al. 2010

Environ Monit Assess

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Contamination of nutrients and heavy metals within aquatic system is of great concern due to its potential impact on human and animal health. The Grand Canal of China, the largest artificial river in the world, is of great importance in supplying water resource, transporting cargo, and recreating resident, as well as great historical heritage. This study assessed and examined the impact of human activities on characters of contamination distribution within the section of the Canal in Taihu watershed. Physicochemical parameters of surface water quality were determined monthly from the year 2004 to 2006 at

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Section: Discussioncontrasting

confidence: 67%

Effects of anthropogenic activities on chemical contamination within the Grand Canal, China

Wang¹,

Han²,

Xu³

et al. 2010

Environ Monit Assess

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“…The delivery of these materials to hydrological networks is augmented by the relatively low filter resistance and restricted potential for temporary storage in these small catchments. Resultantly, the catchment export of sediment and P may be closely related to the magnitude of erosion and land degradation (Kovacs et al, 2012), with adverse impacts on the aquatic habitats ensuing (Collins and Walling, 2004;Haygarth et al, 2005a;Haygarth et al, 2005b;Holden et al, 2007;Valle Junior et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Likewise, studies have sought to characterise the nature of P losses from headwater agricultural catchments (e.g. Haygarth et al, 2005b;Hodgkinson and Withers, 2007;Pionke et al, 1996;Soulsby et al, 2002;Stutter et al, 2008). However, there is currently a dearth of continuous, high-temporal resolution hydro-chemical and suspended sediment monitoring datasets available for rivers draining sensitive headwater catchments.…”

Section: Introductionmentioning

confidence: 99%

Dominant mechanisms for the delivery of fine sediment and phosphorus to fluvial networks draining grassland dominated headwater catchments

Perks

Owen

Benskin

et al. 2015

Science of The Total Environment

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. (2015) 'Dominant mechanisms for the delivery of ne sediment and phosphorus to uvial networks draining grassland dominated headwater catchments.', Science of the total environment., 523 . pp. 178-190. Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

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“…The slope angles were chosen within a realis- tic range found in agricultural settings. The rainfall intensities were chosen to test the impact of short duration, highintensity rainfall events on slurry transport because extreme storm events have a disproportional impact on the transport of dissolved and particulate contaminants to water courses (Evans and Johnes, 2004;Haygarth et al, 2005Haygarth et al, , 2012Rozemeijer and Broers, 2007). Rainfall simulations using 60 and 120 mm h −1 were used so that a systematic doubling of rainfall intensity could be tested in conjunction with a change in slope gradient.…”

Section: Experimental Set-upmentioning

confidence: 99%

Runoff- and erosion-driven transport of cattle slurry: linking molecular tracers to hydrological processes

et al. 2016

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Abstract. The addition of cattle slurry to agricultural land is a widespread practise, but if not correctly managed it can pose a contamination risk to aquatic ecosystems. The transport of inorganic and organic components of cattle slurry to watercourses is a major concern, yet little is known about the physical transport mechanisms and associated fluxes and timings of contamination threats. Therefore, the aim of the study was to ascertain the importance of flow pathway partitioning in the transport (fluxes and timing) of dissolved and particulate slurry-derived compounds with implications for off-site contamination. A series of rainfall-runoff and erosion experiments were carried out using the TRACE (Test Rig for Advancing Connectivity Experiments) experimental hillslope facility. The experiments allowed the quantification of the impact of changing slope gradient and rainfall intensity on nutrient transport from cattle slurry applied to the hillslope, via surface, subsurface, and vertical percolated flow pathways, as well as particulate transport from erosion. The dissolved components were traced using a combination of ammonium (NH + 4 ) and fluorescence analysis, while the particulate fraction was traced using organic biomarkers, 5β-stanols. Results showed that rainfall events which produced flashy hydrological responses, resulting in large quantities of surface runoff, were likely to move sediment and also flush dissolved components of slurry-derived material from the slope, increasing the contamination risk. Rainfall events which produced slower hydrological responses were dominated by vertical percolated flows removing less sediment-associated material, but produced leachate which could contaminate deeper soil layers, and potentially groundwater, over a more prolonged period. Overall, this research provides new insights into the partitioning of slurry-derived material when applied to an unvegetated slope and the transport mechanisms by which contamination risks are created.

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Phosphorus dynamics observed through increasing scales in a nested headwater-to-river channel study

Cited by 85 publications

References 42 publications

Effects of anthropogenic activities on chemical contamination within the Grand Canal, China

Effects of anthropogenic activities on chemical contamination within the Grand Canal, China

Dominant mechanisms for the delivery of fine sediment and phosphorus to fluvial networks draining grassland dominated headwater catchments

Runoff- and erosion-driven transport of cattle slurry: linking molecular tracers to hydrological processes

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