The potential environmental response to increasing ocean alkalinity for negative emissions
The negative emissions technology, artificial ocean alkalinization (AOA), aims to store atmospheric carbon dioxide (CO2) in the ocean by increasing total alkalinity (TA). Calcium carbonate saturation state (ΩCaCO3) and pH would also increase meaning that AOA could alleviate sensitive regions and eco...
Published in: | Mitigation and Adaptation Strategies for Global Change |
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Springer Verlag (Germany)
2019
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:117051 2023-05-15T17:50:24+02:00 The potential environmental response to increasing ocean alkalinity for negative emissions Gore, Sarah Renforth, Phil Perkins, Rupert 2019-10-31 application/pdf https://orca.cardiff.ac.uk/id/eprint/117051/ https://doi.org/10.1007/s11027-018-9830-z https://orca.cardiff.ac.uk/id/eprint/117051/7/Gore2019_Article_ThePotentialEnvironmentalRespo.pdf en eng Springer Verlag (Germany) https://orca.cardiff.ac.uk/id/eprint/117051/7/Gore2019_Article_ThePotentialEnvironmentalRespo.pdf Gore, Sarah https://orca.cardiff.ac.uk/view/cardiffauthors/A2257832Q.html, Renforth, Phil https://orca.cardiff.ac.uk/view/cardiffauthors/A1991802W.html and Perkins, Rupert https://orca.cardiff.ac.uk/view/cardiffauthors/A0101677.html orcid:0000-0002-0810-2656 orcid:0000-0002-0810-2656 2019. The potential environmental response to increasing ocean alkalinity for negative emissions. Mitigation and Adaptation Strategies for Global Change 24 (7) , pp. 1191-1211. 10.1007/s11027-018-9830-z https://doi.org/10.1007/s11027-018-9830-z file https://orca.cardiff.ac.uk/117051/7/Gore2019_Article_ThePotentialEnvironmentalRespo.pdf doi:10.1007/s11027-018-9830-z cc_by CC-BY Article PeerReviewed 2019 ftunivcardiff https://doi.org/10.1007/s11027-018-9830-z 2022-10-27T22:45:53Z The negative emissions technology, artificial ocean alkalinization (AOA), aims to store atmospheric carbon dioxide (CO2) in the ocean by increasing total alkalinity (TA). Calcium carbonate saturation state (ΩCaCO3) and pH would also increase meaning that AOA could alleviate sensitive regions and ecosystems from ocean acidification. However, AOA could raise pH and ΩCaCO3 well above modern-day levels, and very little is known about the environmental and biological impact of this. After treating a red calcifying algae (Corallina spp.) to elevated TA seawater, carbonate production increased by 60% over a control. This has implication for carbon cycling in the past, but also constrains the environmental impact and efficiency of AOA. Carbonate production could reduce the efficiency of CO2 removal. Increasing TA, however, did not significantly influence Corallina spp. primary productivity, respiration, or photophysiology. These results show that AOA may not be intrinsically detrimental for Corallina spp. and that AOA has the potential to lessen the impacts of ocean acidification. However, the experiment tested a single species within a controlled environment to constrain a specific unknown, the rate change of calcification, and additional work is required to understand the impact of AOA on other organisms, whole ecosystems, and the global carbon cycle. Article in Journal/Newspaper Ocean acidification Cardiff University: ORCA (Online Research @ Cardiff) Mitigation and Adaptation Strategies for Global Change 24 7 1191 1211 |
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Cardiff University: ORCA (Online Research @ Cardiff) |
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ftunivcardiff |
language |
English |
description |
The negative emissions technology, artificial ocean alkalinization (AOA), aims to store atmospheric carbon dioxide (CO2) in the ocean by increasing total alkalinity (TA). Calcium carbonate saturation state (ΩCaCO3) and pH would also increase meaning that AOA could alleviate sensitive regions and ecosystems from ocean acidification. However, AOA could raise pH and ΩCaCO3 well above modern-day levels, and very little is known about the environmental and biological impact of this. After treating a red calcifying algae (Corallina spp.) to elevated TA seawater, carbonate production increased by 60% over a control. This has implication for carbon cycling in the past, but also constrains the environmental impact and efficiency of AOA. Carbonate production could reduce the efficiency of CO2 removal. Increasing TA, however, did not significantly influence Corallina spp. primary productivity, respiration, or photophysiology. These results show that AOA may not be intrinsically detrimental for Corallina spp. and that AOA has the potential to lessen the impacts of ocean acidification. However, the experiment tested a single species within a controlled environment to constrain a specific unknown, the rate change of calcification, and additional work is required to understand the impact of AOA on other organisms, whole ecosystems, and the global carbon cycle. |
format |
Article in Journal/Newspaper |
author |
Gore, Sarah Renforth, Phil Perkins, Rupert |
spellingShingle |
Gore, Sarah Renforth, Phil Perkins, Rupert The potential environmental response to increasing ocean alkalinity for negative emissions |
author_facet |
Gore, Sarah Renforth, Phil Perkins, Rupert |
author_sort |
Gore, Sarah |
title |
The potential environmental response to increasing ocean alkalinity for negative emissions |
title_short |
The potential environmental response to increasing ocean alkalinity for negative emissions |
title_full |
The potential environmental response to increasing ocean alkalinity for negative emissions |
title_fullStr |
The potential environmental response to increasing ocean alkalinity for negative emissions |
title_full_unstemmed |
The potential environmental response to increasing ocean alkalinity for negative emissions |
title_sort |
potential environmental response to increasing ocean alkalinity for negative emissions |
publisher |
Springer Verlag (Germany) |
publishDate |
2019 |
url |
https://orca.cardiff.ac.uk/id/eprint/117051/ https://doi.org/10.1007/s11027-018-9830-z https://orca.cardiff.ac.uk/id/eprint/117051/7/Gore2019_Article_ThePotentialEnvironmentalRespo.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/117051/7/Gore2019_Article_ThePotentialEnvironmentalRespo.pdf Gore, Sarah https://orca.cardiff.ac.uk/view/cardiffauthors/A2257832Q.html, Renforth, Phil https://orca.cardiff.ac.uk/view/cardiffauthors/A1991802W.html and Perkins, Rupert https://orca.cardiff.ac.uk/view/cardiffauthors/A0101677.html orcid:0000-0002-0810-2656 orcid:0000-0002-0810-2656 2019. The potential environmental response to increasing ocean alkalinity for negative emissions. Mitigation and Adaptation Strategies for Global Change 24 (7) , pp. 1191-1211. 10.1007/s11027-018-9830-z https://doi.org/10.1007/s11027-018-9830-z file https://orca.cardiff.ac.uk/117051/7/Gore2019_Article_ThePotentialEnvironmentalRespo.pdf doi:10.1007/s11027-018-9830-z |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s11027-018-9830-z |
container_title |
Mitigation and Adaptation Strategies for Global Change |
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24 |
container_issue |
7 |
container_start_page |
1191 |
op_container_end_page |
1211 |
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