Determination of respiration and photosynthesis fractionation factors for atmospheric dioxygen inferred from a vegetation–soil–atmosphere analogue of the terrestrial biosphere in closed chambers
The isotopic composition of dioxygen in the atmosphere is a global tracer which depends on the biosphere flux of dioxygen toward and from the atmosphere (photosynthesis and respiration) as well as exchanges with the stratosphere. When measured in fossil air trapped in ice cores, the relative concent...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , , , , , , , |
Format: | Text |
Language: | English |
Published: |
2023
|
Subjects: | |
Online Access: | https://doi.org/10.5194/bg-20-1047-2023 https://bg.copernicus.org/articles/20/1047/2023/ |
id |
ftcopernicus:oai:publications.copernicus.org:bg99470 |
---|---|
record_format |
openpolar |
spelling |
ftcopernicus:oai:publications.copernicus.org:bg99470 2023-05-15T16:39:19+02:00 Determination of respiration and photosynthesis fractionation factors for atmospheric dioxygen inferred from a vegetation–soil–atmosphere analogue of the terrestrial biosphere in closed chambers Paul, Clémence Piel, Clément Sauze, Joana Pasquier, Nicolas Prié, Frédéric Devidal, Sébastien Jacob, Roxanne Dapoigny, Arnaud Jossoud, Olivier Milcu, Alexandru Landais, Amaëlle 2023-03-16 application/pdf https://doi.org/10.5194/bg-20-1047-2023 https://bg.copernicus.org/articles/20/1047/2023/ eng eng doi:10.5194/bg-20-1047-2023 https://bg.copernicus.org/articles/20/1047/2023/ eISSN: 1726-4189 Text 2023 ftcopernicus https://doi.org/10.5194/bg-20-1047-2023 2023-03-20T17:23:10Z The isotopic composition of dioxygen in the atmosphere is a global tracer which depends on the biosphere flux of dioxygen toward and from the atmosphere (photosynthesis and respiration) as well as exchanges with the stratosphere. When measured in fossil air trapped in ice cores, the relative concentration of 16 O, 17 O, and 18 O of O 2 can be used for several applications such as ice core dating and past global productivity reconstruction. However, there are still uncertainties about the accuracy of these tracers as they depend on the integrated isotopic discrimination of different biological processes of dioxygen production and uptake, for which we currently have very few independent estimates. Here we determined the respiration and photosynthesis fractionation factors for atmospheric dioxygen from experiments carried out in a replicated vegetation–soil–atmosphere analogue of the terrestrial biosphere in closed chambers with growing Festuca arundinacea . The values for 18 O discrimination during soil respiration and dark respiration in leaves are equal to <math xmlns="http://www.w3.org/1998/Math/MathML" id="M6" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>-</mo><mn mathvariant="normal">12.3</mn><mo>±</mo><mn mathvariant="normal">1.7</mn></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="58pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="733d1a9fe43852c24fb30c907beeae17"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-1047-2023-ie00001.svg" width="58pt" height="10pt" src="bg-20-1047-2023-ie00001.png"/></svg:svg> ‰ and <math xmlns="http://www.w3.org/1998/Math/MathML" id="M7" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>-</mo><mn mathvariant="normal">19.1</mn><mo>±</mo><mn mathvariant="normal">2.4</mn></mrow></math> <svg:svg ... Text ice core Copernicus Publications: E-Journals Biogeosciences 20 5 1047 1062 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
The isotopic composition of dioxygen in the atmosphere is a global tracer which depends on the biosphere flux of dioxygen toward and from the atmosphere (photosynthesis and respiration) as well as exchanges with the stratosphere. When measured in fossil air trapped in ice cores, the relative concentration of 16 O, 17 O, and 18 O of O 2 can be used for several applications such as ice core dating and past global productivity reconstruction. However, there are still uncertainties about the accuracy of these tracers as they depend on the integrated isotopic discrimination of different biological processes of dioxygen production and uptake, for which we currently have very few independent estimates. Here we determined the respiration and photosynthesis fractionation factors for atmospheric dioxygen from experiments carried out in a replicated vegetation–soil–atmosphere analogue of the terrestrial biosphere in closed chambers with growing Festuca arundinacea . The values for 18 O discrimination during soil respiration and dark respiration in leaves are equal to <math xmlns="http://www.w3.org/1998/Math/MathML" id="M6" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>-</mo><mn mathvariant="normal">12.3</mn><mo>±</mo><mn mathvariant="normal">1.7</mn></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="58pt" height="10pt" class="svg-formula" dspmath="mathimg" md5hash="733d1a9fe43852c24fb30c907beeae17"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-1047-2023-ie00001.svg" width="58pt" height="10pt" src="bg-20-1047-2023-ie00001.png"/></svg:svg> ‰ and <math xmlns="http://www.w3.org/1998/Math/MathML" id="M7" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>-</mo><mn mathvariant="normal">19.1</mn><mo>±</mo><mn mathvariant="normal">2.4</mn></mrow></math> <svg:svg ... |
format |
Text |
author |
Paul, Clémence Piel, Clément Sauze, Joana Pasquier, Nicolas Prié, Frédéric Devidal, Sébastien Jacob, Roxanne Dapoigny, Arnaud Jossoud, Olivier Milcu, Alexandru Landais, Amaëlle |
spellingShingle |
Paul, Clémence Piel, Clément Sauze, Joana Pasquier, Nicolas Prié, Frédéric Devidal, Sébastien Jacob, Roxanne Dapoigny, Arnaud Jossoud, Olivier Milcu, Alexandru Landais, Amaëlle Determination of respiration and photosynthesis fractionation factors for atmospheric dioxygen inferred from a vegetation–soil–atmosphere analogue of the terrestrial biosphere in closed chambers |
author_facet |
Paul, Clémence Piel, Clément Sauze, Joana Pasquier, Nicolas Prié, Frédéric Devidal, Sébastien Jacob, Roxanne Dapoigny, Arnaud Jossoud, Olivier Milcu, Alexandru Landais, Amaëlle |
author_sort |
Paul, Clémence |
title |
Determination of respiration and photosynthesis fractionation factors for atmospheric dioxygen inferred from a vegetation–soil–atmosphere analogue of the terrestrial biosphere in closed chambers |
title_short |
Determination of respiration and photosynthesis fractionation factors for atmospheric dioxygen inferred from a vegetation–soil–atmosphere analogue of the terrestrial biosphere in closed chambers |
title_full |
Determination of respiration and photosynthesis fractionation factors for atmospheric dioxygen inferred from a vegetation–soil–atmosphere analogue of the terrestrial biosphere in closed chambers |
title_fullStr |
Determination of respiration and photosynthesis fractionation factors for atmospheric dioxygen inferred from a vegetation–soil–atmosphere analogue of the terrestrial biosphere in closed chambers |
title_full_unstemmed |
Determination of respiration and photosynthesis fractionation factors for atmospheric dioxygen inferred from a vegetation–soil–atmosphere analogue of the terrestrial biosphere in closed chambers |
title_sort |
determination of respiration and photosynthesis fractionation factors for atmospheric dioxygen inferred from a vegetation–soil–atmosphere analogue of the terrestrial biosphere in closed chambers |
publishDate |
2023 |
url |
https://doi.org/10.5194/bg-20-1047-2023 https://bg.copernicus.org/articles/20/1047/2023/ |
genre |
ice core |
genre_facet |
ice core |
op_source |
eISSN: 1726-4189 |
op_relation |
doi:10.5194/bg-20-1047-2023 https://bg.copernicus.org/articles/20/1047/2023/ |
op_doi |
https://doi.org/10.5194/bg-20-1047-2023 |
container_title |
Biogeosciences |
container_volume |
20 |
container_issue |
5 |
container_start_page |
1047 |
op_container_end_page |
1062 |
_version_ |
1766029642807902208 |