Stable Carbon and Nitrogen Isotopes in a Peat Profile Are Influenced by Early Stage Diagenesis and Changes in Atmospheric CO2 and N Deposition
In this study, we test whether the δ13C and δ15N in a peat profile are, respectively, linked to the recent dilution of atmospheric δ13CO2 caused by increased fossil fuel combustion and changes in atmospheric δ15N deposition. We analysed bulk peat and Sphagnum fuscum branch C and N concentrations and...
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ftpubmed:oai:pubmedcentral.nih.gov:3359457 2023-05-15T17:42:36+02:00 Stable Carbon and Nitrogen Isotopes in a Peat Profile Are Influenced by Early Stage Diagenesis and Changes in Atmospheric CO2 and N Deposition Esmeijer-Liu, Alice J. Kürschner, Wolfram M. Lotter, André F. Verhoeven, Jos T. A. Goslar, Tomasz 2012-01-25 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3359457 http://www.ncbi.nlm.nih.gov/pubmed/22707802 https://doi.org/10.1007/s11270-011-1001-8 en eng Springer Netherlands http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3359457 http://www.ncbi.nlm.nih.gov/pubmed/22707802 http://dx.doi.org/10.1007/s11270-011-1001-8 © The Author(s) 2012 Article Text 2012 ftpubmed https://doi.org/10.1007/s11270-011-1001-8 2013-09-04T07:42:49Z In this study, we test whether the δ13C and δ15N in a peat profile are, respectively, linked to the recent dilution of atmospheric δ13CO2 caused by increased fossil fuel combustion and changes in atmospheric δ15N deposition. We analysed bulk peat and Sphagnum fuscum branch C and N concentrations and bulk peat, S. fuscum branch and Andromeda polifolia leaf δ13C and δ15N from a 30-cm hummock-like peat profile from an Aapa mire in northern Finland. Statistically significant correlations were found between the dilution of atmospheric δ13CO2 and bulk peat δ13C, as well as between historically increasing wet N deposition and bulk peat δ15N. However, these correlations may be affected by early stage kinetic fractionation during decomposition and possibly other processes. We conclude that bulk peat stable carbon and nitrogen isotope ratios may reflect the dilution of atmospheric δ13CO2 and the changes in δ15N deposition, but probably also reflect the effects of early stage kinetic fractionation during diagenesis. This needs to be taken into account when interpreting palaeodata. There is a need for further studies of δ15N profiles in sufficiently old dated cores from sites with different rates of decomposition: These would facilitate more reliable separation of depositional δ15N from patterns caused by other processes. Text Northern Finland PubMed Central (PMC) Water, Air, & Soil Pollution 223 5 2007 2022 |
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Article Esmeijer-Liu, Alice J. Kürschner, Wolfram M. Lotter, André F. Verhoeven, Jos T. A. Goslar, Tomasz Stable Carbon and Nitrogen Isotopes in a Peat Profile Are Influenced by Early Stage Diagenesis and Changes in Atmospheric CO2 and N Deposition |
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Article |
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In this study, we test whether the δ13C and δ15N in a peat profile are, respectively, linked to the recent dilution of atmospheric δ13CO2 caused by increased fossil fuel combustion and changes in atmospheric δ15N deposition. We analysed bulk peat and Sphagnum fuscum branch C and N concentrations and bulk peat, S. fuscum branch and Andromeda polifolia leaf δ13C and δ15N from a 30-cm hummock-like peat profile from an Aapa mire in northern Finland. Statistically significant correlations were found between the dilution of atmospheric δ13CO2 and bulk peat δ13C, as well as between historically increasing wet N deposition and bulk peat δ15N. However, these correlations may be affected by early stage kinetic fractionation during decomposition and possibly other processes. We conclude that bulk peat stable carbon and nitrogen isotope ratios may reflect the dilution of atmospheric δ13CO2 and the changes in δ15N deposition, but probably also reflect the effects of early stage kinetic fractionation during diagenesis. This needs to be taken into account when interpreting palaeodata. There is a need for further studies of δ15N profiles in sufficiently old dated cores from sites with different rates of decomposition: These would facilitate more reliable separation of depositional δ15N from patterns caused by other processes. |
format |
Text |
author |
Esmeijer-Liu, Alice J. Kürschner, Wolfram M. Lotter, André F. Verhoeven, Jos T. A. Goslar, Tomasz |
author_facet |
Esmeijer-Liu, Alice J. Kürschner, Wolfram M. Lotter, André F. Verhoeven, Jos T. A. Goslar, Tomasz |
author_sort |
Esmeijer-Liu, Alice J. |
title |
Stable Carbon and Nitrogen Isotopes in a Peat Profile Are Influenced by Early Stage Diagenesis and Changes in Atmospheric CO2 and N Deposition |
title_short |
Stable Carbon and Nitrogen Isotopes in a Peat Profile Are Influenced by Early Stage Diagenesis and Changes in Atmospheric CO2 and N Deposition |
title_full |
Stable Carbon and Nitrogen Isotopes in a Peat Profile Are Influenced by Early Stage Diagenesis and Changes in Atmospheric CO2 and N Deposition |
title_fullStr |
Stable Carbon and Nitrogen Isotopes in a Peat Profile Are Influenced by Early Stage Diagenesis and Changes in Atmospheric CO2 and N Deposition |
title_full_unstemmed |
Stable Carbon and Nitrogen Isotopes in a Peat Profile Are Influenced by Early Stage Diagenesis and Changes in Atmospheric CO2 and N Deposition |
title_sort |
stable carbon and nitrogen isotopes in a peat profile are influenced by early stage diagenesis and changes in atmospheric co2 and n deposition |
publisher |
Springer Netherlands |
publishDate |
2012 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3359457 http://www.ncbi.nlm.nih.gov/pubmed/22707802 https://doi.org/10.1007/s11270-011-1001-8 |
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Northern Finland |
genre_facet |
Northern Finland |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3359457 http://www.ncbi.nlm.nih.gov/pubmed/22707802 http://dx.doi.org/10.1007/s11270-011-1001-8 |
op_rights |
© The Author(s) 2012 |
op_doi |
https://doi.org/10.1007/s11270-011-1001-8 |
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Water, Air, & Soil Pollution |
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223 |
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5 |
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2007 |
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2022 |
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