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Erik Jeppesen

Are nitrous oxide emissions indirectly fueled by input of terrestrial dissolved organic nitrogen in a large eutrophic Lake Taihu, China?

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Are nitrous oxide emissions indirectly fueled by input of terrestrial dissolved organic nitrogen in a large eutrophic Lake Taihu, China? / Zhou, Yongqiang; Xiao, Qitao; Zhou, Lei; Jang, Kyoung Soon; Zhang, Yunlin; Zhang, Mi; Lee, Xuhui; Qin, Boqiang; Brookes, Justin D.; Davidson, Thomas A.; Jeppesen, Erik.

In: Science of the total Environment, Vol. 722, 138005, 2020.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Zhou, Y, Xiao, Q, Zhou, L, Jang, KS, Zhang, Y, Zhang, M, Lee, X, Qin, B, Brookes, JD, Davidson, TA & Jeppesen, E 2020, 'Are nitrous oxide emissions indirectly fueled by input of terrestrial dissolved organic nitrogen in a large eutrophic Lake Taihu, China?', Science of the total Environment, vol. 722, 138005. https://doi.org/10.1016/j.scitotenv.2020.138005

APA

Zhou, Y., Xiao, Q., Zhou, L., Jang, K. S., Zhang, Y., Zhang, M., Lee, X., Qin, B., Brookes, J. D., Davidson, T. A., & Jeppesen, E. (2020). Are nitrous oxide emissions indirectly fueled by input of terrestrial dissolved organic nitrogen in a large eutrophic Lake Taihu, China? Science of the total Environment, 722, [138005]. https://doi.org/10.1016/j.scitotenv.2020.138005

CBE

Zhou Y, Xiao Q, Zhou L, Jang KS, Zhang Y, Zhang M, Lee X, Qin B, Brookes JD, Davidson TA, Jeppesen E. 2020. Are nitrous oxide emissions indirectly fueled by input of terrestrial dissolved organic nitrogen in a large eutrophic Lake Taihu, China?. Science of the total Environment. 722:Article 138005. https://doi.org/10.1016/j.scitotenv.2020.138005

MLA

Vancouver

Author

Zhou, Yongqiang ; Xiao, Qitao ; Zhou, Lei ; Jang, Kyoung Soon ; Zhang, Yunlin ; Zhang, Mi ; Lee, Xuhui ; Qin, Boqiang ; Brookes, Justin D. ; Davidson, Thomas A. ; Jeppesen, Erik. / Are nitrous oxide emissions indirectly fueled by input of terrestrial dissolved organic nitrogen in a large eutrophic Lake Taihu, China?. In: Science of the total Environment. 2020 ; Vol. 722.

Bibtex

@article{9e80173ccc6e492e96842e345b02f97d,
title = "Are nitrous oxide emissions indirectly fueled by input of terrestrial dissolved organic nitrogen in a large eutrophic Lake Taihu, China?",
abstract = "Lakes actively transform nitrogen (N) and emit disproportionately large amounts of N2O relative to their surface area. Studies have investigated the relative importance of denitrification or nitrification on N2O emissions; however, the linkage between N2O efflux and dissolved organic nitrogen (DON) and carbon (DOC) remains largely unknown. Long-term (2012–2017) seasonal field observations and a series of degradation experiments were used to unravel how DON composition impacts N2O emissions from Lake Taihu, China. In the northwestern part of the lake, large riverine inflow and high N2O emissions occur in all seasons (24.6 ± 25.2 μmol m−2 d−1), coincident with high levels of terrestrial DON and DOC here. The degradation of labile DON and DOC likely enhanced ammonification as supported by the correlations between NH4 +-N and DON, DOC, a(350), and terrestrial humic-like C3. The area with large riverine inputs in the northwestern part of the lake was characterized by low DO which may enhance incomplete aerobic nitrification and incomplete denitrification, both leading to N2O production. Twenty days laboratory experiments indicated greater N2O production in the northwest inflow samples (N2O on day 20: 120.9 nmol L−1 and 17.3 nmol L−1 for bio- and photo-degradation samples, respectively) compared with the central lake samples (N2O on day 20: 20.3 nmol L−1 and 12.3 nmol L−1 for bio- and photo-degradation samples, respectively), despite both having low Chl-a. Our DON and DOC degradation experiments confirmed the occurrence of ammonification along with consumption of NH4 +-N and thereafter NO3 −-N. Our results collectively suggest that terrestrial DON fueled ammonification, enhanced nitrification and incomplete denitrification, and thereby became an important contributor to the N2O efflux from Lake Taihu.",
keywords = "Dissolved organic nitrogen (DON), Fluorescence, Nitrous oxide (NO), Parallel factor analysis (PARAFAC), Ultrahigh resolution mass spectrometry (FT-ICR MS)",
author = "Yongqiang Zhou and Qitao Xiao and Lei Zhou and Jang, {Kyoung Soon} and Yunlin Zhang and Mi Zhang and Xuhui Lee and Boqiang Qin and Brookes, {Justin D.} and Davidson, {Thomas A.} and Erik Jeppesen",
year = "2020",
doi = "10.1016/j.scitotenv.2020.138005",
language = "English",
volume = "722",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Are nitrous oxide emissions indirectly fueled by input of terrestrial dissolved organic nitrogen in a large eutrophic Lake Taihu, China?

AU - Zhou, Yongqiang

AU - Xiao, Qitao

AU - Zhou, Lei

AU - Jang, Kyoung Soon

AU - Zhang, Yunlin

AU - Zhang, Mi

AU - Lee, Xuhui

AU - Qin, Boqiang

AU - Brookes, Justin D.

AU - Davidson, Thomas A.

AU - Jeppesen, Erik

PY - 2020

Y1 - 2020

N2 - Lakes actively transform nitrogen (N) and emit disproportionately large amounts of N2O relative to their surface area. Studies have investigated the relative importance of denitrification or nitrification on N2O emissions; however, the linkage between N2O efflux and dissolved organic nitrogen (DON) and carbon (DOC) remains largely unknown. Long-term (2012–2017) seasonal field observations and a series of degradation experiments were used to unravel how DON composition impacts N2O emissions from Lake Taihu, China. In the northwestern part of the lake, large riverine inflow and high N2O emissions occur in all seasons (24.6 ± 25.2 μmol m−2 d−1), coincident with high levels of terrestrial DON and DOC here. The degradation of labile DON and DOC likely enhanced ammonification as supported by the correlations between NH4 +-N and DON, DOC, a(350), and terrestrial humic-like C3. The area with large riverine inputs in the northwestern part of the lake was characterized by low DO which may enhance incomplete aerobic nitrification and incomplete denitrification, both leading to N2O production. Twenty days laboratory experiments indicated greater N2O production in the northwest inflow samples (N2O on day 20: 120.9 nmol L−1 and 17.3 nmol L−1 for bio- and photo-degradation samples, respectively) compared with the central lake samples (N2O on day 20: 20.3 nmol L−1 and 12.3 nmol L−1 for bio- and photo-degradation samples, respectively), despite both having low Chl-a. Our DON and DOC degradation experiments confirmed the occurrence of ammonification along with consumption of NH4 +-N and thereafter NO3 −-N. Our results collectively suggest that terrestrial DON fueled ammonification, enhanced nitrification and incomplete denitrification, and thereby became an important contributor to the N2O efflux from Lake Taihu.

AB - Lakes actively transform nitrogen (N) and emit disproportionately large amounts of N2O relative to their surface area. Studies have investigated the relative importance of denitrification or nitrification on N2O emissions; however, the linkage between N2O efflux and dissolved organic nitrogen (DON) and carbon (DOC) remains largely unknown. Long-term (2012–2017) seasonal field observations and a series of degradation experiments were used to unravel how DON composition impacts N2O emissions from Lake Taihu, China. In the northwestern part of the lake, large riverine inflow and high N2O emissions occur in all seasons (24.6 ± 25.2 μmol m−2 d−1), coincident with high levels of terrestrial DON and DOC here. The degradation of labile DON and DOC likely enhanced ammonification as supported by the correlations between NH4 +-N and DON, DOC, a(350), and terrestrial humic-like C3. The area with large riverine inputs in the northwestern part of the lake was characterized by low DO which may enhance incomplete aerobic nitrification and incomplete denitrification, both leading to N2O production. Twenty days laboratory experiments indicated greater N2O production in the northwest inflow samples (N2O on day 20: 120.9 nmol L−1 and 17.3 nmol L−1 for bio- and photo-degradation samples, respectively) compared with the central lake samples (N2O on day 20: 20.3 nmol L−1 and 12.3 nmol L−1 for bio- and photo-degradation samples, respectively), despite both having low Chl-a. Our DON and DOC degradation experiments confirmed the occurrence of ammonification along with consumption of NH4 +-N and thereafter NO3 −-N. Our results collectively suggest that terrestrial DON fueled ammonification, enhanced nitrification and incomplete denitrification, and thereby became an important contributor to the N2O efflux from Lake Taihu.

KW - Dissolved organic nitrogen (DON)

KW - Fluorescence

KW - Nitrous oxide (NO)

KW - Parallel factor analysis (PARAFAC)

KW - Ultrahigh resolution mass spectrometry (FT-ICR MS)

UR - http://www.scopus.com/inward/record.url?scp=85081921020&partnerID=8YFLogxK

U2 - 10.1016/j.scitotenv.2020.138005

DO - 10.1016/j.scitotenv.2020.138005

M3 - Journal article

C2 - 32208291

AN - SCOPUS:85081921020

VL - 722

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

M1 - 138005

ER -