High-resolution phosphorus transfers at the catchment scale: the hidden importance of non-storm transfers

Philip Jordan, Joerg Arnscheidt, H McGrogan, S McCormick

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

High-resolution measurements of total phosphorus (TP) concentrations in a stream draining a 5 km(2) agricultural catchment (a sub-catchment of Lough Neagh in Northern Ireland) were made every 10 mins by continuous flow instrumentation using new homogenisation, digestion and colorimetric phases. Concurrently, rainfall and stream discharge data were collected at 5 and 15 min. intervals. Major P flushing episodes during storm events peaked on the rising limbs of storm hydrographs. A period of baseflow also indicated the importance of other sources that maintain the stream in a eutrophic state between storm events. These data provide insights into catchment processes that conform to definite patterns that, in a coarser sampling regime, might ordinarily be attributed to sampling and analytical `noise'.
LanguageEnglish
Pages685-691
JournalHydrology and Earth System Sciences
Volume9
Issue number6
Publication statusPublished - 2005

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catchment
phosphorus
agricultural catchment
sampling
baseflow
hydrograph
flushing
instrumentation
limb
digestion
rainfall
draining

Keywords

  • acute and chronic phosphorus transfers
  • high-resolution monitoring
  • catchments

Cite this

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abstract = "High-resolution measurements of total phosphorus (TP) concentrations in a stream draining a 5 km(2) agricultural catchment (a sub-catchment of Lough Neagh in Northern Ireland) were made every 10 mins by continuous flow instrumentation using new homogenisation, digestion and colorimetric phases. Concurrently, rainfall and stream discharge data were collected at 5 and 15 min. intervals. Major P flushing episodes during storm events peaked on the rising limbs of storm hydrographs. A period of baseflow also indicated the importance of other sources that maintain the stream in a eutrophic state between storm events. These data provide insights into catchment processes that conform to definite patterns that, in a coarser sampling regime, might ordinarily be attributed to sampling and analytical `noise'.",
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High-resolution phosphorus transfers at the catchment scale: the hidden importance of non-storm transfers. / Jordan, Philip; Arnscheidt, Joerg; McGrogan, H; McCormick, S.

In: Hydrology and Earth System Sciences, Vol. 9, No. 6, 2005, p. 685-691.

Research output: Contribution to journalArticle

TY - JOUR

T1 - High-resolution phosphorus transfers at the catchment scale: the hidden importance of non-storm transfers

AU - Jordan, Philip

AU - Arnscheidt, Joerg

AU - McGrogan, H

AU - McCormick, S

PY - 2005

Y1 - 2005

N2 - High-resolution measurements of total phosphorus (TP) concentrations in a stream draining a 5 km(2) agricultural catchment (a sub-catchment of Lough Neagh in Northern Ireland) were made every 10 mins by continuous flow instrumentation using new homogenisation, digestion and colorimetric phases. Concurrently, rainfall and stream discharge data were collected at 5 and 15 min. intervals. Major P flushing episodes during storm events peaked on the rising limbs of storm hydrographs. A period of baseflow also indicated the importance of other sources that maintain the stream in a eutrophic state between storm events. These data provide insights into catchment processes that conform to definite patterns that, in a coarser sampling regime, might ordinarily be attributed to sampling and analytical `noise'.

AB - High-resolution measurements of total phosphorus (TP) concentrations in a stream draining a 5 km(2) agricultural catchment (a sub-catchment of Lough Neagh in Northern Ireland) were made every 10 mins by continuous flow instrumentation using new homogenisation, digestion and colorimetric phases. Concurrently, rainfall and stream discharge data were collected at 5 and 15 min. intervals. Major P flushing episodes during storm events peaked on the rising limbs of storm hydrographs. A period of baseflow also indicated the importance of other sources that maintain the stream in a eutrophic state between storm events. These data provide insights into catchment processes that conform to definite patterns that, in a coarser sampling regime, might ordinarily be attributed to sampling and analytical `noise'.

KW - acute and chronic phosphorus transfers

KW - high-resolution monitoring

KW - catchments

M3 - Article

VL - 9

SP - 685

EP - 691

JO - Hydrology and Earth System Sciences

T2 - Hydrology and Earth System Sciences

JF - Hydrology and Earth System Sciences

SN - 1027-5606

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