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Contribution of nitrogen species and phosphorus fractions to stream water quality in agricultural catchments

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Contribution of nitrogen species and phosphorus fractions to stream water quality in agricultural catchments. / Heathwaite, A. Louise; Johnes, P. J.
In: Hydrological Processes, Vol. 10, No. 7, 07.1996, p. 971-983.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Heathwaite, AL & Johnes, PJ 1996, 'Contribution of nitrogen species and phosphorus fractions to stream water quality in agricultural catchments', Hydrological Processes, vol. 10, no. 7, pp. 971-983. https://doi.org/10.1002/(SICI)1099-1085(199607)10:7<971::AID-HYP351>3.0.CO;2-N

APA

Heathwaite, A. L., & Johnes, P. J. (1996). Contribution of nitrogen species and phosphorus fractions to stream water quality in agricultural catchments. Hydrological Processes, 10(7), 971-983. https://doi.org/10.1002/(SICI)1099-1085(199607)10:7<971::AID-HYP351>3.0.CO;2-N

Vancouver

Heathwaite AL, Johnes PJ. Contribution of nitrogen species and phosphorus fractions to stream water quality in agricultural catchments. Hydrological Processes. 1996 Jul;10(7):971-983. doi: 10.1002/(SICI)1099-1085(199607)10:7<971::AID-HYP351>3.0.CO;2-N

Author

Heathwaite, A. Louise ; Johnes, P. J. / Contribution of nitrogen species and phosphorus fractions to stream water quality in agricultural catchments. In: Hydrological Processes. 1996 ; Vol. 10, No. 7. pp. 971-983.

Bibtex

@article{56c29c38941b4d8498412946e1206b72,
title = "Contribution of nitrogen species and phosphorus fractions to stream water quality in agricultural catchments",
abstract = "The contribution from agricultural catchments to stream nitrogen and phosphorus concentrations was assessed by evaluation of the chemical composition of these nutrients in agricultural runoff for both surface and subsurface flow pathways. A range of land uses (grazed and ungrazed grassland, cereals, roots) in intensive agricultural systems was studied at scales from hillslope plots (0.5 m2) to large catchment (>300 km2). By fractionating the total nutrient load it was possible to establish that most of the phosphorus was transported in the unreactive (particulate and organic) fraction via surface runoff. This was true regardless of the scale of measurement. The form of the nitrogen load varied with land use and grazing intensity. High loads of dissolved inorganic nitrogen (with >90% transported as NH4-N) were recorded in surface runoff from heavily grazed land. In subsurface flow from small (2 km2) subcatchments and in larger (>300 km2) catchments, organic nitrogen was found to be an important secondary constituent of the total nitrogen load, comprising 40% of the total annual load.",
keywords = "nitrogen species, phosphorus species , stream waters , AGRICULTURAL CATCHMENTS",
author = "Heathwaite, {A. Louise} and Johnes, {P. J.}",
note = "Contribution of nitrogen species and phosphorus fractions to stream water quality in agricultural catchments 48 cites: http://scholar.google.com/scholar?num=100&hl=en&lr=&cites=8309017692402493223",
year = "1996",
month = jul,
doi = "10.1002/(SICI)1099-1085(199607)10:7<971::AID-HYP351>3.0.CO;2-N",
language = "English",
volume = "10",
pages = "971--983",
journal = "Hydrological Processes",
issn = "1099-1085",
publisher = "John Wiley and Sons Ltd",
number = "7",

}

RIS

TY - JOUR

T1 - Contribution of nitrogen species and phosphorus fractions to stream water quality in agricultural catchments

AU - Heathwaite, A. Louise

AU - Johnes, P. J.

N1 - Contribution of nitrogen species and phosphorus fractions to stream water quality in agricultural catchments 48 cites: http://scholar.google.com/scholar?num=100&hl=en&lr=&cites=8309017692402493223

PY - 1996/7

Y1 - 1996/7

N2 - The contribution from agricultural catchments to stream nitrogen and phosphorus concentrations was assessed by evaluation of the chemical composition of these nutrients in agricultural runoff for both surface and subsurface flow pathways. A range of land uses (grazed and ungrazed grassland, cereals, roots) in intensive agricultural systems was studied at scales from hillslope plots (0.5 m2) to large catchment (>300 km2). By fractionating the total nutrient load it was possible to establish that most of the phosphorus was transported in the unreactive (particulate and organic) fraction via surface runoff. This was true regardless of the scale of measurement. The form of the nitrogen load varied with land use and grazing intensity. High loads of dissolved inorganic nitrogen (with >90% transported as NH4-N) were recorded in surface runoff from heavily grazed land. In subsurface flow from small (2 km2) subcatchments and in larger (>300 km2) catchments, organic nitrogen was found to be an important secondary constituent of the total nitrogen load, comprising 40% of the total annual load.

AB - The contribution from agricultural catchments to stream nitrogen and phosphorus concentrations was assessed by evaluation of the chemical composition of these nutrients in agricultural runoff for both surface and subsurface flow pathways. A range of land uses (grazed and ungrazed grassland, cereals, roots) in intensive agricultural systems was studied at scales from hillslope plots (0.5 m2) to large catchment (>300 km2). By fractionating the total nutrient load it was possible to establish that most of the phosphorus was transported in the unreactive (particulate and organic) fraction via surface runoff. This was true regardless of the scale of measurement. The form of the nitrogen load varied with land use and grazing intensity. High loads of dissolved inorganic nitrogen (with >90% transported as NH4-N) were recorded in surface runoff from heavily grazed land. In subsurface flow from small (2 km2) subcatchments and in larger (>300 km2) catchments, organic nitrogen was found to be an important secondary constituent of the total nitrogen load, comprising 40% of the total annual load.

KW - nitrogen species

KW - phosphorus species

KW - stream waters

KW - AGRICULTURAL CATCHMENTS

U2 - 10.1002/(SICI)1099-1085(199607)10:7<971::AID-HYP351>3.0.CO;2-N

DO - 10.1002/(SICI)1099-1085(199607)10:7<971::AID-HYP351>3.0.CO;2-N

M3 - Journal article

VL - 10

SP - 971

EP - 983

JO - Hydrological Processes

JF - Hydrological Processes

SN - 1099-1085

IS - 7

ER -