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Rapid immobilisation and leaching of wet-deposited nitrate in upland organic soils

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Rapid immobilisation and leaching of wet-deposited nitrate in upland organic soils. / Evans, Chris D.; Norris, Dave; Ostle, Nick et al.
In: Environmental Pollution, Vol. 156, No. 3, 01.12.2008, p. 636-643.

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

Harvard

Evans, CD, Norris, D, Ostle, N, Grant, H, Rowe, EC, Curtis, CJ & Reynolds, B 2008, 'Rapid immobilisation and leaching of wet-deposited nitrate in upland organic soils', Environmental Pollution, vol. 156, no. 3, pp. 636-643. https://doi.org/10.1016/j.envpol.2008.06.019

APA

Evans, C. D., Norris, D., Ostle, N., Grant, H., Rowe, E. C., Curtis, C. J., & Reynolds, B. (2008). Rapid immobilisation and leaching of wet-deposited nitrate in upland organic soils. Environmental Pollution, 156(3), 636-643. https://doi.org/10.1016/j.envpol.2008.06.019

Vancouver

Evans CD, Norris D, Ostle N, Grant H, Rowe EC, Curtis CJ et al. Rapid immobilisation and leaching of wet-deposited nitrate in upland organic soils. Environmental Pollution. 2008 Dec 1;156(3):636-643. Epub 2008 Jul 23. doi: 10.1016/j.envpol.2008.06.019

Author

Evans, Chris D. ; Norris, Dave ; Ostle, Nick et al. / Rapid immobilisation and leaching of wet-deposited nitrate in upland organic soils. In: Environmental Pollution. 2008 ; Vol. 156, No. 3. pp. 636-643.

Bibtex

@article{6259015769e545b7a10131a2bfb12477,
title = "Rapid immobilisation and leaching of wet-deposited nitrate in upland organic soils",
abstract = "Nitrate (NO3-) is often observed in surface waters draining terrestrial ecosystems that remain strongly nitrogen (N) limited. It has been suggested that this occurs due to hydrological bypassing of soil or vegetation N retention, particularly during high flows. To test this hypothesis, artificial rain events were applied to 12 replicate soil blocks on a Welsh podzolic acid grassland hillslope, labelled with 15N-enriched NO3- and a conservative bromide (Br-) tracer. On average, 31% of tracer-labelled water was recovered within 4 h, mostly as mineral horizon lateral flow, indicating rapid vertical water transfer through the organic horizon via preferential flowpaths. However, on average only 6% of 15N-labelled NO3- was recovered. Around 80% of added NO3- was thus rapidly immobilised, probably by microbial communities present on the surfaces of preferential flowpaths. Transitory exceedance of microbial N-uptake capacity during periods of high water and N flux may therefore provide a mechanism for NO3- leaching.",
keywords = "N tracer, Atmospheric deposition, Immobilisation, Nitrate, Nitrogen saturation",
author = "Evans, {Chris D.} and Dave Norris and Nick Ostle and Helen Grant and Rowe, {Edwin C.} and Curtis, {Chris J.} and Brian Reynolds",
year = "2008",
month = dec,
day = "1",
doi = "10.1016/j.envpol.2008.06.019",
language = "English",
volume = "156",
pages = "636--643",
journal = "Environmental Pollution",
issn = "0269-7491",
publisher = "Elsevier Ltd",
number = "3",

}

RIS

TY - JOUR

T1 - Rapid immobilisation and leaching of wet-deposited nitrate in upland organic soils

AU - Evans, Chris D.

AU - Norris, Dave

AU - Ostle, Nick

AU - Grant, Helen

AU - Rowe, Edwin C.

AU - Curtis, Chris J.

AU - Reynolds, Brian

PY - 2008/12/1

Y1 - 2008/12/1

N2 - Nitrate (NO3-) is often observed in surface waters draining terrestrial ecosystems that remain strongly nitrogen (N) limited. It has been suggested that this occurs due to hydrological bypassing of soil or vegetation N retention, particularly during high flows. To test this hypothesis, artificial rain events were applied to 12 replicate soil blocks on a Welsh podzolic acid grassland hillslope, labelled with 15N-enriched NO3- and a conservative bromide (Br-) tracer. On average, 31% of tracer-labelled water was recovered within 4 h, mostly as mineral horizon lateral flow, indicating rapid vertical water transfer through the organic horizon via preferential flowpaths. However, on average only 6% of 15N-labelled NO3- was recovered. Around 80% of added NO3- was thus rapidly immobilised, probably by microbial communities present on the surfaces of preferential flowpaths. Transitory exceedance of microbial N-uptake capacity during periods of high water and N flux may therefore provide a mechanism for NO3- leaching.

AB - Nitrate (NO3-) is often observed in surface waters draining terrestrial ecosystems that remain strongly nitrogen (N) limited. It has been suggested that this occurs due to hydrological bypassing of soil or vegetation N retention, particularly during high flows. To test this hypothesis, artificial rain events were applied to 12 replicate soil blocks on a Welsh podzolic acid grassland hillslope, labelled with 15N-enriched NO3- and a conservative bromide (Br-) tracer. On average, 31% of tracer-labelled water was recovered within 4 h, mostly as mineral horizon lateral flow, indicating rapid vertical water transfer through the organic horizon via preferential flowpaths. However, on average only 6% of 15N-labelled NO3- was recovered. Around 80% of added NO3- was thus rapidly immobilised, probably by microbial communities present on the surfaces of preferential flowpaths. Transitory exceedance of microbial N-uptake capacity during periods of high water and N flux may therefore provide a mechanism for NO3- leaching.

KW - N tracer

KW - Atmospheric deposition

KW - Immobilisation

KW - Nitrate

KW - Nitrogen saturation

U2 - 10.1016/j.envpol.2008.06.019

DO - 10.1016/j.envpol.2008.06.019

M3 - Journal article

C2 - 18653264

AN - SCOPUS:55649089870

VL - 156

SP - 636

EP - 643

JO - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

IS - 3

ER -