Boron isotope composition of the cold-water coral Lophelia pertusa along the Norwegian margin: Zooming into a potential pH-proxy by combining bulk and high-resolution approaches
High-latitude cold-water coral reefs are particularly vulnerable to climate change due to enhanced CO2 uptake in these regions. To evaluate their physiological functioning and potential application as pH archives, we retrieved both recent and fossil samples of Lophelia pertusa along the Norwegian ma...
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ftoceanrep:oai:oceanrep.geomar.de:45407 2024-04-21T08:06:48+00:00 Boron isotope composition of the cold-water coral Lophelia pertusa along the Norwegian margin: Zooming into a potential pH-proxy by combining bulk and high-resolution approaches Jurikova, Hana Liebetrau, Volker Raddatz, Jacek Fietzke, Jan Trotter, Julie Rocholl, Alexander Krause, Stefan McCulloch, Malcom Rüggeberg, Andres Eisenhauer, Anton 2019-05-20 text https://oceanrep.geomar.de/id/eprint/45407/ https://oceanrep.geomar.de/id/eprint/45407/13/1-s2.0-S0009254119300051-main.pdf https://doi.org/10.1016/j.chemgeo.2019.01.005 en eng Elsevier https://oceanrep.geomar.de/id/eprint/45407/13/1-s2.0-S0009254119300051-main.pdf Jurikova, H., Liebetrau, V., Raddatz, J., Fietzke, J. , Trotter, J., Rocholl, A., Krause, S., McCulloch, M., Rüggeberg, A. and Eisenhauer, A. (2019) Boron isotope composition of the cold-water coral Lophelia pertusa along the Norwegian margin: Zooming into a potential pH-proxy by combining bulk and high-resolution approaches. Open Access Chemical Geology, 513 . pp. 143-152. DOI 10.1016/j.chemgeo.2019.01.005 <https://doi.org/10.1016/j.chemgeo.2019.01.005>. doi:10.1016/j.chemgeo.2019.01.005 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed info:eu-repo/semantics/article 2019 ftoceanrep https://doi.org/10.1016/j.chemgeo.2019.01.005 2024-03-27T17:48:37Z High-latitude cold-water coral reefs are particularly vulnerable to climate change due to enhanced CO2 uptake in these regions. To evaluate their physiological functioning and potential application as pH archives, we retrieved both recent and fossil samples of Lophelia pertusa along the Norwegian margin from Oslofjord (59°N), over to Trondheimsfjord, Sula and Lopphavet (70.6°N). Boron isotope analyses (δ11B) were undertaken using solution-based and laser ablation multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS; LA-ICP-MS), and secondary ion mass spectrometry (SIMS). Epi-fluorescence microscopy was employed to provide a rapid pre-screening routine for structure-specific subsampling in the coral skeleton. This integrated approach enabled us to assess heterogeneities within single specimens, as well as to investigate the role of local environmental influences including recent and past variations. All three mass spectrometry methods show substantial differences in the δ11B of the theca wall (TW) and the centres of calcification (COC's). Micro-bulk subsamples milled from the theca wall of modern specimens originating from different habitats but with comparable seawater pH (8–8.16) gave consistent δ11B values averaging 26.7 (±0.2‰, 2σ, n = 4), while COC subsamples systematically deviated towards lower B/Ca (by ~40%) and depleted δ11B values (minimum 22.7 ± 0.3‰, 2σ), implying a difference of at least 4‰ between TW and COC. SIMS and LA-ICP-MS measurements identified much larger internal heterogeneities with maximum variation of ~10‰ between the distinct skeletal structures; minimal SIMS δ11B values of ~17.3 ± 1.2‰ (2σ) were associated with the pure COC material. Our findings may be interpreted in terms of the occurrence of two main, but likely different, biomineralisation mechanisms in L. pertusa, with the COC's generally exhibiting minimal pH up-regulation, potentially supporting the use of bicarbonate in the early stages of biomineralisation. Furthermore, we highlight the potential utility of ... Article in Journal/Newspaper Lophelia pertusa OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Chemical Geology 513 143 152 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
High-latitude cold-water coral reefs are particularly vulnerable to climate change due to enhanced CO2 uptake in these regions. To evaluate their physiological functioning and potential application as pH archives, we retrieved both recent and fossil samples of Lophelia pertusa along the Norwegian margin from Oslofjord (59°N), over to Trondheimsfjord, Sula and Lopphavet (70.6°N). Boron isotope analyses (δ11B) were undertaken using solution-based and laser ablation multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS; LA-ICP-MS), and secondary ion mass spectrometry (SIMS). Epi-fluorescence microscopy was employed to provide a rapid pre-screening routine for structure-specific subsampling in the coral skeleton. This integrated approach enabled us to assess heterogeneities within single specimens, as well as to investigate the role of local environmental influences including recent and past variations. All three mass spectrometry methods show substantial differences in the δ11B of the theca wall (TW) and the centres of calcification (COC's). Micro-bulk subsamples milled from the theca wall of modern specimens originating from different habitats but with comparable seawater pH (8–8.16) gave consistent δ11B values averaging 26.7 (±0.2‰, 2σ, n = 4), while COC subsamples systematically deviated towards lower B/Ca (by ~40%) and depleted δ11B values (minimum 22.7 ± 0.3‰, 2σ), implying a difference of at least 4‰ between TW and COC. SIMS and LA-ICP-MS measurements identified much larger internal heterogeneities with maximum variation of ~10‰ between the distinct skeletal structures; minimal SIMS δ11B values of ~17.3 ± 1.2‰ (2σ) were associated with the pure COC material. Our findings may be interpreted in terms of the occurrence of two main, but likely different, biomineralisation mechanisms in L. pertusa, with the COC's generally exhibiting minimal pH up-regulation, potentially supporting the use of bicarbonate in the early stages of biomineralisation. Furthermore, we highlight the potential utility of ... |
format |
Article in Journal/Newspaper |
author |
Jurikova, Hana Liebetrau, Volker Raddatz, Jacek Fietzke, Jan Trotter, Julie Rocholl, Alexander Krause, Stefan McCulloch, Malcom Rüggeberg, Andres Eisenhauer, Anton |
spellingShingle |
Jurikova, Hana Liebetrau, Volker Raddatz, Jacek Fietzke, Jan Trotter, Julie Rocholl, Alexander Krause, Stefan McCulloch, Malcom Rüggeberg, Andres Eisenhauer, Anton Boron isotope composition of the cold-water coral Lophelia pertusa along the Norwegian margin: Zooming into a potential pH-proxy by combining bulk and high-resolution approaches |
author_facet |
Jurikova, Hana Liebetrau, Volker Raddatz, Jacek Fietzke, Jan Trotter, Julie Rocholl, Alexander Krause, Stefan McCulloch, Malcom Rüggeberg, Andres Eisenhauer, Anton |
author_sort |
Jurikova, Hana |
title |
Boron isotope composition of the cold-water coral Lophelia pertusa along the Norwegian margin: Zooming into a potential pH-proxy by combining bulk and high-resolution approaches |
title_short |
Boron isotope composition of the cold-water coral Lophelia pertusa along the Norwegian margin: Zooming into a potential pH-proxy by combining bulk and high-resolution approaches |
title_full |
Boron isotope composition of the cold-water coral Lophelia pertusa along the Norwegian margin: Zooming into a potential pH-proxy by combining bulk and high-resolution approaches |
title_fullStr |
Boron isotope composition of the cold-water coral Lophelia pertusa along the Norwegian margin: Zooming into a potential pH-proxy by combining bulk and high-resolution approaches |
title_full_unstemmed |
Boron isotope composition of the cold-water coral Lophelia pertusa along the Norwegian margin: Zooming into a potential pH-proxy by combining bulk and high-resolution approaches |
title_sort |
boron isotope composition of the cold-water coral lophelia pertusa along the norwegian margin: zooming into a potential ph-proxy by combining bulk and high-resolution approaches |
publisher |
Elsevier |
publishDate |
2019 |
url |
https://oceanrep.geomar.de/id/eprint/45407/ https://oceanrep.geomar.de/id/eprint/45407/13/1-s2.0-S0009254119300051-main.pdf https://doi.org/10.1016/j.chemgeo.2019.01.005 |
genre |
Lophelia pertusa |
genre_facet |
Lophelia pertusa |
op_relation |
https://oceanrep.geomar.de/id/eprint/45407/13/1-s2.0-S0009254119300051-main.pdf Jurikova, H., Liebetrau, V., Raddatz, J., Fietzke, J. , Trotter, J., Rocholl, A., Krause, S., McCulloch, M., Rüggeberg, A. and Eisenhauer, A. (2019) Boron isotope composition of the cold-water coral Lophelia pertusa along the Norwegian margin: Zooming into a potential pH-proxy by combining bulk and high-resolution approaches. Open Access Chemical Geology, 513 . pp. 143-152. DOI 10.1016/j.chemgeo.2019.01.005 <https://doi.org/10.1016/j.chemgeo.2019.01.005>. doi:10.1016/j.chemgeo.2019.01.005 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.chemgeo.2019.01.005 |
container_title |
Chemical Geology |
container_volume |
513 |
container_start_page |
143 |
op_container_end_page |
152 |
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1796946245090017280 |