Nutrient hydrochemistry for a groundwater-dominated catchment: The Hampshire Avon, UK

Jarvie, Helen P.; Neal, Colin; Withers, P. J. A.; Wescott, Chris; Acornley, R. M.

doi:10.1016/j.scitotenv.2005.02.012

Cited by 61 publications

(27 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The rate of 'constant' input varied with rainfall, producing this series of dilution curves, which strongly suggests that it is groundwater, rather than STW effluents, providing the major load input to the River Enborne. Similar conclusions have been reached based on mass-balance studies of the River Enborne catchment (Halliday et al, 2014), and many previous studies of Chalk catchments in southern England have shown the high concentrations of nitrate groundwater contamination (Jarvie et al, 2005;Smith et al, 2010). Most of the smaller storm events produced clockwise hysteresis (Table 2, Figure 5), indicating a predominance of rapidly delivered NO 3 sources.…”

Section: Nitrate Sourcessupporting

confidence: 85%

Characterising phosphorus and nitrate inputs to a rural river using high-frequency concentration–flow relationships

Bowes

Jarvie

Halliday

et al. 2015

Science of The Total Environment

202

143

View full text Add to dashboard Cite

Characterising phosphorus and nitrate inputs to a rural river using highfrequency concentration-flow relationships.Contact CEH NORA team at noraceh@ceh.ac.ukThe NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. AbstractThe total reactive phosphorus (TRP) and nitrate concentrations of the River Enborne, southern England, were monitored at hourly interval between January 2010 and December 2011. The relationships between these high-frequency nutrient concentration signals and flow were used to infer changes in nutrient source and dynamics through the annual cycle and each individual storm event, by studying hysteresis patterns. TRP concentrations exhibited strong dilution patterns with increasing flow, and predominantly clockwise hysteresis through storm events. Despite the Enborne catchment being relatively rural for southern England, TRP inputs were dominated by constant, non-rain-related inputs from sewage treatment works (STW) for the majority of the year, producing the highest phosphorus concentrations through the spring-summer growing season. At higher river flows, the majority of the TRP load was derived from within-channel remobilisation of phosphorus from the bed sediment, much of which was also derived from STW inputs. Therefore, future phosphorus 2 mitigation measures should focus on STW improvements. Agricultural diffuse TRP inputs were only evident during storms in the May of each year, probably relating to manure application to land. The nitrate concentration-flow relationship produced a series of dilution curves, indicating major inputs from groundwater and to a lesser extent STW. Significant diffuse agricultural inputs with anticlockwise hysteresis trajectories were observed during the first major storms of the winter period.The simultaneous investigation of high-frequency time series data, concentration-flow relationships and hysteresis behaviour through multiple storms for both phosphorus and nitrate offers a simple and innovative approach for providing new insights into nutrient sources and dynamics.

show abstract

Section: Nitrate Sourcessupporting

confidence: 85%

Characterising phosphorus and nitrate inputs to a rural river using high-frequency concentration–flow relationships

Bowes

Jarvie

Halliday

et al. 2015

Science of The Total Environment

202

143

View full text Add to dashboard Cite

show abstract

“…Similar patterns of increasing SRP and B concentrations and SRP:B ratios have also been observed in other clean Chalk streams where there are no direct effluent discharges Jarvie et al, 2005b). The increases in SRP:B ratios as baseflows rose were consistent with shorter water residence times within the hyporheic zone and thus lower potential for SRP to be taken up by adsorption/coprecipitation within the soil/groundwater and by plant uptake.…”

Section: Srp Concentrations and Loads In The Pang And Lambournsupporting

confidence: 77%

Within-river nutrient processing in Chalk streams: The Pang and Lambourn, UK

Jarvie

Neal

Jürgens

et al. 2006

Journal of Hydrology

Self Cite

View full text Add to dashboard Cite

“…Furthermore, in the context of catchment management, it is meaningful to remember that significant algae blooms are, in part, the product of inputs of organic material from other sources such as those sampled in this study and indeed excessive nutrient supply (e.g. Jarvie et al, 2005). Effective catchment management strategies need to focus on the key primary sources of pollution to deliver sustainable solutions and as such, the control of algae blooms is dependent upon controls targeting other sources.…”

Section: Basket Extractionmentioning

confidence: 99%

Sources of sediment-bound organic matter infiltrating spawning gravels during the incubation and emergence life stages of salmonids

Collins¹,

Williams²,

Zhang³

et al. 2014

Agriculture, Ecosystems & Environment

View full text Add to dashboard Cite

Keywords:Sediment-bound organic matter Sources Carbon and nitrogen stable isotopes Near infra-red reflectance spectroscopy Salmonids Farm manures A B S T R A C TThe biodegradation of organic matter ingressing spawning gravels in rivers exerts an oxygen demand which is believed to contribute to detrimental impacts on aquatic ecology including salmonids. Catchment management strategies therefore require reliable information on the key sources of sediment-bound organic matter. Accordingly, a novel source fingerprinting procedure based on analyses of bulk stable 13 C and 15N isotope values and organic molecular structures detected using near infrared reflectance (NIR) spectroscopy was tested for assessing the primary sources of sediment-bound organic matter infiltrating artificial Atlantic salmon spawning redds in five rivers across England and Wales. Statistically-verified source fingerprints were identified using a combination of the Kruskal-Wallis Htest, principal component analysis and GA-driven discriminant function analysis. Interstitial sediment samples were obtained from artificial redds using retrievable basket traps inserted at the start of the salmonid spawning season and extracted subsequently in conjunction with critical juvenile phases (eyeing, hatch, emergence, late spawning) of fish development associated with incubation and emergence. Over the duration of these four basket extractions, the overall relative frequency-weighted average median source contributions to the interstitial sediment-bound organic matter sampled in the study rivers ranged between 26% (full uncertainty range 0-100%) and 44% (full uncertainty range 0-100%) for farm yard manures/slurries, 11% (full uncertainty range 0-75%) and 48% (full uncertainty range 0-99%) for damaged road verges, 16% (full uncertainty range (0-78%) and 52% (full uncertainty range (0-100%) for decaying instream vegetation and 4% (full uncertainty range 0-31%) and 10% (full uncertainty range (0-44%) for human septic waste. The results of mass conservation tests suggest that the procedure combining bulk 13 C and 15 N isotope values and NIR spectroscopy data on organic molecular structures is sensitive to the risks of significant non-conservative tracer behaviour in the fluvial environment and will therefore not necessarily work at all in-channel sites in all catchments.

show abstract

Nutrient hydrochemistry for a groundwater-dominated catchment: The Hampshire Avon, UK

Cited by 61 publications

References 21 publications

Characterising phosphorus and nitrate inputs to a rural river using high-frequency concentration–flow relationships

Characterising phosphorus and nitrate inputs to a rural river using high-frequency concentration–flow relationships

Within-river nutrient processing in Chalk streams: The Pang and Lambourn, UK

Sources of sediment-bound organic matter infiltrating spawning gravels during the incubation and emergence life stages of salmonids

Contact Info

Product

Resources

About