The influence of seawater pH on U / Ca ratios in the scleractinian cold-water coral Lophelia pertusa
The increasing pCO2 in seawater is a serious threat for marine calcifiers and alters the biogeochemistry of the ocean. Therefore, the reconstruction of past-seawater properties and their impact on marine ecosystems is an important way to investigate the underlying mechanisms and to better constrain...
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Copernicus Publications (EGU)
2014
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ftoceanrep:oai:oceanrep.geomar.de:22141 2024-04-21T08:06:47+00:00 The influence of seawater pH on U / Ca ratios in the scleractinian cold-water coral Lophelia pertusa Raddatz, Jacek Rüggeberg, Andres Flögel, Sascha Hathorne, Ed C. Liebetrau, Volker Eisenhauer, Anton Dullo, Wolf-Christian 2014-04-08 text https://oceanrep.geomar.de/id/eprint/22141/ https://oceanrep.geomar.de/id/eprint/22141/1/Raddatzetal2014.pdf https://doi.org/10.5194/bg-11-1863-2014 en eng Copernicus Publications (EGU) https://oceanrep.geomar.de/id/eprint/22141/1/Raddatzetal2014.pdf Raddatz, J., Rüggeberg, A., Flögel, S., Hathorne, E. C. , Liebetrau, V., Eisenhauer, A. and Dullo, W. C. (2014) The influence of seawater pH on U / Ca ratios in the scleractinian cold-water coral Lophelia pertusa. Open Access Biogeosciences (BG), 11 . pp. 1863-1871. DOI 10.5194/bg-11-1863-2014 <https://doi.org/10.5194/bg-11-1863-2014>. doi:10.5194/bg-11-1863-2014 info:eu-repo/semantics/openAccess Article PeerReviewed 2014 ftoceanrep https://doi.org/10.5194/bg-11-1863-2014 2024-03-27T17:48:37Z The increasing pCO2 in seawater is a serious threat for marine calcifiers and alters the biogeochemistry of the ocean. Therefore, the reconstruction of past-seawater properties and their impact on marine ecosystems is an important way to investigate the underlying mechanisms and to better constrain the effects of possible changes in the future ocean. Cold-water coral (CWC) ecosystems are biodiversity hotspots. Living close to aragonite-undersaturation, these corals serve as living laboratories as well as archives to reconstruct the boundary conditions of their calcification under the carbonate system of the ocean. We investigated the reef-building CWC Lophelia pertusa as a recorder of intermediate ocean seawater pH. This species-specific field calibration is based on a unique sample set of live in-situ collected L. pertusa and corresponding seawater samples. These data demonstrate that uranium speciation and skeletal incorporation for azooxanthellate scleractinian CWCs is pH dependent. However, this also indicates that internal pH up-regulation of the coral does not play a role in uranium incorporation into the majority of the skeleton of L. pertusa. This study suggests L. pertusa provides a new archive for the reconstruction of intermediate water mass pH and hence may help to constrain tipping points for ecosystem dynamics and evolutionary characteristics in a changing ocean. Article in Journal/Newspaper Lophelia pertusa OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Biogeosciences 11 7 1863 1871 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The increasing pCO2 in seawater is a serious threat for marine calcifiers and alters the biogeochemistry of the ocean. Therefore, the reconstruction of past-seawater properties and their impact on marine ecosystems is an important way to investigate the underlying mechanisms and to better constrain the effects of possible changes in the future ocean. Cold-water coral (CWC) ecosystems are biodiversity hotspots. Living close to aragonite-undersaturation, these corals serve as living laboratories as well as archives to reconstruct the boundary conditions of their calcification under the carbonate system of the ocean. We investigated the reef-building CWC Lophelia pertusa as a recorder of intermediate ocean seawater pH. This species-specific field calibration is based on a unique sample set of live in-situ collected L. pertusa and corresponding seawater samples. These data demonstrate that uranium speciation and skeletal incorporation for azooxanthellate scleractinian CWCs is pH dependent. However, this also indicates that internal pH up-regulation of the coral does not play a role in uranium incorporation into the majority of the skeleton of L. pertusa. This study suggests L. pertusa provides a new archive for the reconstruction of intermediate water mass pH and hence may help to constrain tipping points for ecosystem dynamics and evolutionary characteristics in a changing ocean. |
format |
Article in Journal/Newspaper |
author |
Raddatz, Jacek Rüggeberg, Andres Flögel, Sascha Hathorne, Ed C. Liebetrau, Volker Eisenhauer, Anton Dullo, Wolf-Christian |
spellingShingle |
Raddatz, Jacek Rüggeberg, Andres Flögel, Sascha Hathorne, Ed C. Liebetrau, Volker Eisenhauer, Anton Dullo, Wolf-Christian The influence of seawater pH on U / Ca ratios in the scleractinian cold-water coral Lophelia pertusa |
author_facet |
Raddatz, Jacek Rüggeberg, Andres Flögel, Sascha Hathorne, Ed C. Liebetrau, Volker Eisenhauer, Anton Dullo, Wolf-Christian |
author_sort |
Raddatz, Jacek |
title |
The influence of seawater pH on U / Ca ratios in the scleractinian cold-water coral Lophelia pertusa |
title_short |
The influence of seawater pH on U / Ca ratios in the scleractinian cold-water coral Lophelia pertusa |
title_full |
The influence of seawater pH on U / Ca ratios in the scleractinian cold-water coral Lophelia pertusa |
title_fullStr |
The influence of seawater pH on U / Ca ratios in the scleractinian cold-water coral Lophelia pertusa |
title_full_unstemmed |
The influence of seawater pH on U / Ca ratios in the scleractinian cold-water coral Lophelia pertusa |
title_sort |
influence of seawater ph on u / ca ratios in the scleractinian cold-water coral lophelia pertusa |
publisher |
Copernicus Publications (EGU) |
publishDate |
2014 |
url |
https://oceanrep.geomar.de/id/eprint/22141/ https://oceanrep.geomar.de/id/eprint/22141/1/Raddatzetal2014.pdf https://doi.org/10.5194/bg-11-1863-2014 |
genre |
Lophelia pertusa |
genre_facet |
Lophelia pertusa |
op_relation |
https://oceanrep.geomar.de/id/eprint/22141/1/Raddatzetal2014.pdf Raddatz, J., Rüggeberg, A., Flögel, S., Hathorne, E. C. , Liebetrau, V., Eisenhauer, A. and Dullo, W. C. (2014) The influence of seawater pH on U / Ca ratios in the scleractinian cold-water coral Lophelia pertusa. Open Access Biogeosciences (BG), 11 . pp. 1863-1871. DOI 10.5194/bg-11-1863-2014 <https://doi.org/10.5194/bg-11-1863-2014>. doi:10.5194/bg-11-1863-2014 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-11-1863-2014 |
container_title |
Biogeosciences |
container_volume |
11 |
container_issue |
7 |
container_start_page |
1863 |
op_container_end_page |
1871 |
_version_ |
1796946237525590016 |