Ocean warming, not acidification, controlled coccolithophore response during past greenhouse climate change
Current carbon dioxide emissions are an assumed threat to oceanic calcifying plankton (coccolithophores) not just due to rising sea-surface temperatures, but also because of ocean acidification (OA). This assessment is based on single species culture experiments that are now revealing complex, syner...
Published in: | Geology |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
eScholarship, University of California
2016
|
Subjects: | |
Online Access: | https://escholarship.org/uc/item/90z7x15w https://escholarship.org/content/qt90z7x15w/qt90z7x15w.pdf https://doi.org/10.1130/g37273.1 |
id |
ftcdlib:oai:escholarship.org:ark:/13030/qt90z7x15w |
---|---|
record_format |
openpolar |
spelling |
ftcdlib:oai:escholarship.org:ark:/13030/qt90z7x15w 2024-09-15T18:28:15+00:00 Ocean warming, not acidification, controlled coccolithophore response during past greenhouse climate change Gibbs, Samantha J Bown, Paul R Ridgwell, Andy Young, Jeremy R Poulton, Alex J O’Dea, Sarah A 59 - 62 2016-01-01 application/pdf https://escholarship.org/uc/item/90z7x15w https://escholarship.org/content/qt90z7x15w/qt90z7x15w.pdf https://doi.org/10.1130/g37273.1 unknown eScholarship, University of California qt90z7x15w https://escholarship.org/uc/item/90z7x15w https://escholarship.org/content/qt90z7x15w/qt90z7x15w.pdf doi:10.1130/g37273.1 public Geology, vol 44, iss 1 Life Below Water Climate Action Earth Sciences Geochemistry & Geophysics article 2016 ftcdlib https://doi.org/10.1130/g37273.1 2024-06-28T06:28:19Z Current carbon dioxide emissions are an assumed threat to oceanic calcifying plankton (coccolithophores) not just due to rising sea-surface temperatures, but also because of ocean acidification (OA). This assessment is based on single species culture experiments that are now revealing complex, synergistic, and adaptive responses to such environmental change. Despite this complexity, there is still a widespread perception that coccolithophore calcification will be inhibited by OA. These plankton have an excellent fossil record, and so we can test for the impact of OA during geological carbon cycle events, providing the added advantages of exploring entire communities across real-world major climate perturbation and recovery. Here we target fossil coccolithophore groups (holococcoliths and braarudosphaerids) expected to exhibit greatest sensitivity to acidification because of their reliance on extracellular calcification. Across the Paleocene-Eocene Thermal Maximum (56 Ma) rapid warming event, the biogeography and abundance of these extracellular calcifiers shifted dramatically, disappearing entirely from low latitudes to become limited to cooler, lower saturation-state areas. By comparing these range shift data with the environmental parameters from an Earth system model, we show that the principal control on these range retractions was temperature, with survival maintained in high-latitude refugia, despite more adverse ocean chemistry conditions. Deleterious effects of OA were only evidenced when twinned with elevated temperatures. Article in Journal/Newspaper Ocean acidification University of California: eScholarship Geology 44 1 59 62 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Life Below Water Climate Action Earth Sciences Geochemistry & Geophysics |
spellingShingle |
Life Below Water Climate Action Earth Sciences Geochemistry & Geophysics Gibbs, Samantha J Bown, Paul R Ridgwell, Andy Young, Jeremy R Poulton, Alex J O’Dea, Sarah A Ocean warming, not acidification, controlled coccolithophore response during past greenhouse climate change |
topic_facet |
Life Below Water Climate Action Earth Sciences Geochemistry & Geophysics |
description |
Current carbon dioxide emissions are an assumed threat to oceanic calcifying plankton (coccolithophores) not just due to rising sea-surface temperatures, but also because of ocean acidification (OA). This assessment is based on single species culture experiments that are now revealing complex, synergistic, and adaptive responses to such environmental change. Despite this complexity, there is still a widespread perception that coccolithophore calcification will be inhibited by OA. These plankton have an excellent fossil record, and so we can test for the impact of OA during geological carbon cycle events, providing the added advantages of exploring entire communities across real-world major climate perturbation and recovery. Here we target fossil coccolithophore groups (holococcoliths and braarudosphaerids) expected to exhibit greatest sensitivity to acidification because of their reliance on extracellular calcification. Across the Paleocene-Eocene Thermal Maximum (56 Ma) rapid warming event, the biogeography and abundance of these extracellular calcifiers shifted dramatically, disappearing entirely from low latitudes to become limited to cooler, lower saturation-state areas. By comparing these range shift data with the environmental parameters from an Earth system model, we show that the principal control on these range retractions was temperature, with survival maintained in high-latitude refugia, despite more adverse ocean chemistry conditions. Deleterious effects of OA were only evidenced when twinned with elevated temperatures. |
format |
Article in Journal/Newspaper |
author |
Gibbs, Samantha J Bown, Paul R Ridgwell, Andy Young, Jeremy R Poulton, Alex J O’Dea, Sarah A |
author_facet |
Gibbs, Samantha J Bown, Paul R Ridgwell, Andy Young, Jeremy R Poulton, Alex J O’Dea, Sarah A |
author_sort |
Gibbs, Samantha J |
title |
Ocean warming, not acidification, controlled coccolithophore response during past greenhouse climate change |
title_short |
Ocean warming, not acidification, controlled coccolithophore response during past greenhouse climate change |
title_full |
Ocean warming, not acidification, controlled coccolithophore response during past greenhouse climate change |
title_fullStr |
Ocean warming, not acidification, controlled coccolithophore response during past greenhouse climate change |
title_full_unstemmed |
Ocean warming, not acidification, controlled coccolithophore response during past greenhouse climate change |
title_sort |
ocean warming, not acidification, controlled coccolithophore response during past greenhouse climate change |
publisher |
eScholarship, University of California |
publishDate |
2016 |
url |
https://escholarship.org/uc/item/90z7x15w https://escholarship.org/content/qt90z7x15w/qt90z7x15w.pdf https://doi.org/10.1130/g37273.1 |
op_coverage |
59 - 62 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Geology, vol 44, iss 1 |
op_relation |
qt90z7x15w https://escholarship.org/uc/item/90z7x15w https://escholarship.org/content/qt90z7x15w/qt90z7x15w.pdf doi:10.1130/g37273.1 |
op_rights |
public |
op_doi |
https://doi.org/10.1130/g37273.1 |
container_title |
Geology |
container_volume |
44 |
container_issue |
1 |
container_start_page |
59 |
op_container_end_page |
62 |
_version_ |
1810469591059529728 |