Microcosm studies of the role of land plants in elevating soil carbon dioxide and chemical weathering
A decrease in atmospheric carbon dioxide (CO2) concentration during the mid-Palaeozoic is postulated to have been partially the consequence of the evolution of rooted land plants. Root development increased the amount of carbonic acid generated by root respiration within soils. This led to increased...
Published in: | Global Biogeochemical Cycles |
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American Geophysical Union
2008
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:10054 2023-05-15T15:52:42+02:00 Microcosm studies of the role of land plants in elevating soil carbon dioxide and chemical weathering Baars, Christian Jones, Thomas Hefin Edwards, Dianne 2008-08-15 application/pdf https://orca.cardiff.ac.uk/id/eprint/10054/ https://doi.org/10.1029/2008GB003228 https://orca.cardiff.ac.uk/id/eprint/10054/1/Baars%202008.pdf en eng American Geophysical Union https://orca.cardiff.ac.uk/id/eprint/10054/1/Baars%202008.pdf Baars, Christian https://orca.cardiff.ac.uk/view/cardiffauthors/A025630T.html, Jones, Thomas Hefin https://orca.cardiff.ac.uk/view/cardiffauthors/A019781Z.html orcid:0000-0002-7874-3627 orcid:0000-0002-7874-3627 and Edwards, Dianne https://orca.cardiff.ac.uk/view/cardiffauthors/A033367T.html orcid:0000-0002-9786-4395 orcid:0000-0002-9786-4395 2008. Microcosm studies of the role of land plants in elevating soil carbon dioxide and chemical weathering. Global Biogeochemical Cycles 22 (3) , GB3019. 10.1029/2008GB003228 https://doi.org/10.1029/2008GB003228 file https://orca.cardiff.ac.uk/10054/1/Baars%202008.pdf doi:10.1029/2008GB003228 QE Geology QK Botany Article NonPeerReviewed 2008 ftunivcardiff https://doi.org/10.1029/2008GB003228 2022-10-20T22:34:13Z A decrease in atmospheric carbon dioxide (CO2) concentration during the mid-Palaeozoic is postulated to have been partially the consequence of the evolution of rooted land plants. Root development increased the amount of carbonic acid generated by root respiration within soils. This led to increased chemical weathering of silicates and subsequent formation of carbonates, resulting in lower atmospheric CO2 concentrations. To test this assumption, analog (morphologically equivalent) plant species, ranging from those possessing no roots to those with complex rhizomatous rooting systems, were grown in trays within microcosms at ambient (360 ppm/0.37 mbar) and highly elevated (3500 ppm/3.55 mbar) atmospheric CO2 concentrations in a controlled environment facility. Substrate CO2 concentrations increased significantly under elevated atmospheric CO2, and Equisetum hyemale (L.). The latter is postulated to result from the effects of deeply rooted plants, elevated atmospheric CO2 concentrations, or both. Plants with simple or no rooting systems or the addition of dead organic matter as a substrate for microorganisms did not enhance substrate CO2 concentrations. Article in Journal/Newspaper Carbonic acid Cardiff University: ORCA (Online Research @ Cardiff) Global Biogeochemical Cycles 22 3 n/a n/a |
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Open Polar |
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Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
English |
topic |
QE Geology QK Botany |
spellingShingle |
QE Geology QK Botany Baars, Christian Jones, Thomas Hefin Edwards, Dianne Microcosm studies of the role of land plants in elevating soil carbon dioxide and chemical weathering |
topic_facet |
QE Geology QK Botany |
description |
A decrease in atmospheric carbon dioxide (CO2) concentration during the mid-Palaeozoic is postulated to have been partially the consequence of the evolution of rooted land plants. Root development increased the amount of carbonic acid generated by root respiration within soils. This led to increased chemical weathering of silicates and subsequent formation of carbonates, resulting in lower atmospheric CO2 concentrations. To test this assumption, analog (morphologically equivalent) plant species, ranging from those possessing no roots to those with complex rhizomatous rooting systems, were grown in trays within microcosms at ambient (360 ppm/0.37 mbar) and highly elevated (3500 ppm/3.55 mbar) atmospheric CO2 concentrations in a controlled environment facility. Substrate CO2 concentrations increased significantly under elevated atmospheric CO2, and Equisetum hyemale (L.). The latter is postulated to result from the effects of deeply rooted plants, elevated atmospheric CO2 concentrations, or both. Plants with simple or no rooting systems or the addition of dead organic matter as a substrate for microorganisms did not enhance substrate CO2 concentrations. |
format |
Article in Journal/Newspaper |
author |
Baars, Christian Jones, Thomas Hefin Edwards, Dianne |
author_facet |
Baars, Christian Jones, Thomas Hefin Edwards, Dianne |
author_sort |
Baars, Christian |
title |
Microcosm studies of the role of land plants in elevating soil carbon dioxide and chemical weathering |
title_short |
Microcosm studies of the role of land plants in elevating soil carbon dioxide and chemical weathering |
title_full |
Microcosm studies of the role of land plants in elevating soil carbon dioxide and chemical weathering |
title_fullStr |
Microcosm studies of the role of land plants in elevating soil carbon dioxide and chemical weathering |
title_full_unstemmed |
Microcosm studies of the role of land plants in elevating soil carbon dioxide and chemical weathering |
title_sort |
microcosm studies of the role of land plants in elevating soil carbon dioxide and chemical weathering |
publisher |
American Geophysical Union |
publishDate |
2008 |
url |
https://orca.cardiff.ac.uk/id/eprint/10054/ https://doi.org/10.1029/2008GB003228 https://orca.cardiff.ac.uk/id/eprint/10054/1/Baars%202008.pdf |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/10054/1/Baars%202008.pdf Baars, Christian https://orca.cardiff.ac.uk/view/cardiffauthors/A025630T.html, Jones, Thomas Hefin https://orca.cardiff.ac.uk/view/cardiffauthors/A019781Z.html orcid:0000-0002-7874-3627 orcid:0000-0002-7874-3627 and Edwards, Dianne https://orca.cardiff.ac.uk/view/cardiffauthors/A033367T.html orcid:0000-0002-9786-4395 orcid:0000-0002-9786-4395 2008. Microcosm studies of the role of land plants in elevating soil carbon dioxide and chemical weathering. Global Biogeochemical Cycles 22 (3) , GB3019. 10.1029/2008GB003228 https://doi.org/10.1029/2008GB003228 file https://orca.cardiff.ac.uk/10054/1/Baars%202008.pdf doi:10.1029/2008GB003228 |
op_doi |
https://doi.org/10.1029/2008GB003228 |
container_title |
Global Biogeochemical Cycles |
container_volume |
22 |
container_issue |
3 |
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1766387805134520320 |