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Turnover of labile and recalcitrant soil carbon differ in response to nitrate and ammonium deposition in an ombrotrophic peatland

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Turnover of labile and recalcitrant soil carbon differ in response to nitrate and ammonium deposition in an ombrotrophic peatland. / Currey, Pauline M.; Johnson, David; Sheppard, Lucy J. et al.
In: Global Change Biology, Vol. 16, No. 8, 31.08.2010, p. 2307-2321.

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

Harvard

Currey, PM, Johnson, D, Sheppard, LJ, Leith, ID, Toberman, H, van der Wal, R, Dawson, LA & Artz, RRE 2010, 'Turnover of labile and recalcitrant soil carbon differ in response to nitrate and ammonium deposition in an ombrotrophic peatland', Global Change Biology, vol. 16, no. 8, pp. 2307-2321. https://doi.org/10.1111/j.1365-2486.2009.02082.x

APA

Currey, P. M., Johnson, D., Sheppard, L. J., Leith, I. D., Toberman, H., van der Wal, R., Dawson, L. A., & Artz, R. R. E. (2010). Turnover of labile and recalcitrant soil carbon differ in response to nitrate and ammonium deposition in an ombrotrophic peatland. Global Change Biology, 16(8), 2307-2321. https://doi.org/10.1111/j.1365-2486.2009.02082.x

Vancouver

Currey PM, Johnson D, Sheppard LJ, Leith ID, Toberman H, van der Wal R et al. Turnover of labile and recalcitrant soil carbon differ in response to nitrate and ammonium deposition in an ombrotrophic peatland. Global Change Biology. 2010 Aug 31;16(8):2307-2321. Epub 2010 Jul 1. doi: 10.1111/j.1365-2486.2009.02082.x

Author

Currey, Pauline M. ; Johnson, David ; Sheppard, Lucy J. et al. / Turnover of labile and recalcitrant soil carbon differ in response to nitrate and ammonium deposition in an ombrotrophic peatland. In: Global Change Biology. 2010 ; Vol. 16, No. 8. pp. 2307-2321.

Bibtex

@article{9280c5e19d064294ad3bb8a10a264a4d,
title = "Turnover of labile and recalcitrant soil carbon differ in response to nitrate and ammonium deposition in an ombrotrophic peatland",
abstract = "The effects of 4 years of simulated nitrogen deposition, as nitrate (NO3−) and ammonium (NH4+), on microbial carbon turnover were studied in an ombrotrophic peatland. We investigated the mineralization of simple forms of carbon using MicroResp{\texttrademark} measurements (a multiple substrate induced respiration technique) and the activities of four soil enzymes involved in the decomposition of more complex forms of carbon or in nutrient acquisition: N-acetyl-glucosaminidase (NAG), cellobiohydrolase (CBH), acid phosphatase (AP), and phenol oxidase (PO). The potential mineralization of labile forms of carbon was significantly enhanced at the higher N additions, especially with NH4+ amendments, while potential enzyme activities involved in breakdown of more complex forms of carbon or nutrient acquisition decreased slightly (NAG and CBH) or remained unchanged (AP and PO) with N amendments. This study also showed the importance of distinguishing between NO3− and NH4+ amendments, as their impact often differed. It is possible that the limited response on potential extracellular enzyme activity is due to other factors, such as limited exposure to the added N in the deeper soil or continued suboptimal functioning of the enzymes due to the low pH, possibly via the inhibitory effect of low phenol oxidase activity.",
keywords = "carbon turnover, enzyme activity, nitrogen deposition, peatland, substrate-induced respiration",
author = "Currey, {Pauline M.} and David Johnson and Sheppard, {Lucy J.} and Leith, {Ian D.} and Hannah Toberman and {van der Wal}, Rene and Dawson, {Lorna A.} and Artz, {Rebekka R. E.}",
year = "2010",
month = aug,
day = "31",
doi = "10.1111/j.1365-2486.2009.02082.x",
language = "English",
volume = "16",
pages = "2307--2321",
journal = "Global Change Biology",
issn = "1354-1013",
publisher = "Blackwell Publishing Ltd",
number = "8",

}

RIS

TY - JOUR

T1 - Turnover of labile and recalcitrant soil carbon differ in response to nitrate and ammonium deposition in an ombrotrophic peatland

AU - Currey, Pauline M.

AU - Johnson, David

AU - Sheppard, Lucy J.

AU - Leith, Ian D.

AU - Toberman, Hannah

AU - van der Wal, Rene

AU - Dawson, Lorna A.

AU - Artz, Rebekka R. E.

PY - 2010/8/31

Y1 - 2010/8/31

N2 - The effects of 4 years of simulated nitrogen deposition, as nitrate (NO3−) and ammonium (NH4+), on microbial carbon turnover were studied in an ombrotrophic peatland. We investigated the mineralization of simple forms of carbon using MicroResp™ measurements (a multiple substrate induced respiration technique) and the activities of four soil enzymes involved in the decomposition of more complex forms of carbon or in nutrient acquisition: N-acetyl-glucosaminidase (NAG), cellobiohydrolase (CBH), acid phosphatase (AP), and phenol oxidase (PO). The potential mineralization of labile forms of carbon was significantly enhanced at the higher N additions, especially with NH4+ amendments, while potential enzyme activities involved in breakdown of more complex forms of carbon or nutrient acquisition decreased slightly (NAG and CBH) or remained unchanged (AP and PO) with N amendments. This study also showed the importance of distinguishing between NO3− and NH4+ amendments, as their impact often differed. It is possible that the limited response on potential extracellular enzyme activity is due to other factors, such as limited exposure to the added N in the deeper soil or continued suboptimal functioning of the enzymes due to the low pH, possibly via the inhibitory effect of low phenol oxidase activity.

AB - The effects of 4 years of simulated nitrogen deposition, as nitrate (NO3−) and ammonium (NH4+), on microbial carbon turnover were studied in an ombrotrophic peatland. We investigated the mineralization of simple forms of carbon using MicroResp™ measurements (a multiple substrate induced respiration technique) and the activities of four soil enzymes involved in the decomposition of more complex forms of carbon or in nutrient acquisition: N-acetyl-glucosaminidase (NAG), cellobiohydrolase (CBH), acid phosphatase (AP), and phenol oxidase (PO). The potential mineralization of labile forms of carbon was significantly enhanced at the higher N additions, especially with NH4+ amendments, while potential enzyme activities involved in breakdown of more complex forms of carbon or nutrient acquisition decreased slightly (NAG and CBH) or remained unchanged (AP and PO) with N amendments. This study also showed the importance of distinguishing between NO3− and NH4+ amendments, as their impact often differed. It is possible that the limited response on potential extracellular enzyme activity is due to other factors, such as limited exposure to the added N in the deeper soil or continued suboptimal functioning of the enzymes due to the low pH, possibly via the inhibitory effect of low phenol oxidase activity.

KW - carbon turnover

KW - enzyme activity

KW - nitrogen deposition

KW - peatland

KW - substrate-induced respiration

U2 - 10.1111/j.1365-2486.2009.02082.x

DO - 10.1111/j.1365-2486.2009.02082.x

M3 - Journal article

VL - 16

SP - 2307

EP - 2321

JO - Global Change Biology

JF - Global Change Biology

SN - 1354-1013

IS - 8

ER -