Is the relative thickness of ammonoid septa influenced by ocean acidification, phylogenetic relationships and palaeogeographic position?
Abstract The impact of increasing atmospheric CO2 and the resulting decreasing pH of seawater are in the focus of current environmental research. These factors cause problems for marine calcifiers such as reduced calcification rates and the dissolution of calcareous skeletons. While the impact on re...
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ftdoajarticles:oai:doaj.org/article:25896799b8874b42a0aa89df2d122c95 2023-05-15T17:49:40+02:00 Is the relative thickness of ammonoid septa influenced by ocean acidification, phylogenetic relationships and palaeogeographic position? Céline Weber Michael Hautmann Amane Tajika Christian Klug 2022-04-01T00:00:00Z https://doi.org/10.1186/s13358-022-00246-2 https://doaj.org/article/25896799b8874b42a0aa89df2d122c95 EN eng SpringerOpen https://doi.org/10.1186/s13358-022-00246-2 https://doaj.org/toc/1664-2376 https://doaj.org/toc/1664-2384 doi:10.1186/s13358-022-00246-2 1664-2376 1664-2384 https://doaj.org/article/25896799b8874b42a0aa89df2d122c95 Swiss Journal of Palaeontology, Vol 141, Iss 1, Pp 1-26 (2022) Ammonoids Septal thickness End-Triassic mass extinction Mesozoic Ocean acidification Calcifying organism Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 article 2022 ftdoajarticles https://doi.org/10.1186/s13358-022-00246-2 2022-12-31T00:34:40Z Abstract The impact of increasing atmospheric CO2 and the resulting decreasing pH of seawater are in the focus of current environmental research. These factors cause problems for marine calcifiers such as reduced calcification rates and the dissolution of calcareous skeletons. While the impact on recent organisms is well established, little is known about long-term evolutionary consequences. Here, we assessed whether ammonoids reacted to environmental change by changing septal thickness. We measured the septal thickness of ammonoid phragmocones through ontogeny in order to test the hypothesis that atmospheric pCO2, seawater pH and other factors affected aragonite biomineralisation in ammonoids. Particularly, we studied septal thickness of ammonoids before and after the ocean acidification event in the latest Triassic until the Early Cretaceous. Early Jurassic ammonoid lineages had thinner septa relative to diameter than their Late Triassic relatives, which we tentatively interpret as consequence of a positive selection for reduced shell material as an evolutionary response to this ocean acidification event. This response was preserved within several lineages among the Early Jurassic descendants of these ammonoids. By contrast, we did not find a significant correlation between septal thickness and long-term atmospheric pCO2 or seawater pH, but we discovered a correlation with palaeolatitude. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Swiss Journal of Palaeontology 141 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ammonoids Septal thickness End-Triassic mass extinction Mesozoic Ocean acidification Calcifying organism Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 |
spellingShingle |
Ammonoids Septal thickness End-Triassic mass extinction Mesozoic Ocean acidification Calcifying organism Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 Céline Weber Michael Hautmann Amane Tajika Christian Klug Is the relative thickness of ammonoid septa influenced by ocean acidification, phylogenetic relationships and palaeogeographic position? |
topic_facet |
Ammonoids Septal thickness End-Triassic mass extinction Mesozoic Ocean acidification Calcifying organism Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 |
description |
Abstract The impact of increasing atmospheric CO2 and the resulting decreasing pH of seawater are in the focus of current environmental research. These factors cause problems for marine calcifiers such as reduced calcification rates and the dissolution of calcareous skeletons. While the impact on recent organisms is well established, little is known about long-term evolutionary consequences. Here, we assessed whether ammonoids reacted to environmental change by changing septal thickness. We measured the septal thickness of ammonoid phragmocones through ontogeny in order to test the hypothesis that atmospheric pCO2, seawater pH and other factors affected aragonite biomineralisation in ammonoids. Particularly, we studied septal thickness of ammonoids before and after the ocean acidification event in the latest Triassic until the Early Cretaceous. Early Jurassic ammonoid lineages had thinner septa relative to diameter than their Late Triassic relatives, which we tentatively interpret as consequence of a positive selection for reduced shell material as an evolutionary response to this ocean acidification event. This response was preserved within several lineages among the Early Jurassic descendants of these ammonoids. By contrast, we did not find a significant correlation between septal thickness and long-term atmospheric pCO2 or seawater pH, but we discovered a correlation with palaeolatitude. |
format |
Article in Journal/Newspaper |
author |
Céline Weber Michael Hautmann Amane Tajika Christian Klug |
author_facet |
Céline Weber Michael Hautmann Amane Tajika Christian Klug |
author_sort |
Céline Weber |
title |
Is the relative thickness of ammonoid septa influenced by ocean acidification, phylogenetic relationships and palaeogeographic position? |
title_short |
Is the relative thickness of ammonoid septa influenced by ocean acidification, phylogenetic relationships and palaeogeographic position? |
title_full |
Is the relative thickness of ammonoid septa influenced by ocean acidification, phylogenetic relationships and palaeogeographic position? |
title_fullStr |
Is the relative thickness of ammonoid septa influenced by ocean acidification, phylogenetic relationships and palaeogeographic position? |
title_full_unstemmed |
Is the relative thickness of ammonoid septa influenced by ocean acidification, phylogenetic relationships and palaeogeographic position? |
title_sort |
is the relative thickness of ammonoid septa influenced by ocean acidification, phylogenetic relationships and palaeogeographic position? |
publisher |
SpringerOpen |
publishDate |
2022 |
url |
https://doi.org/10.1186/s13358-022-00246-2 https://doaj.org/article/25896799b8874b42a0aa89df2d122c95 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Swiss Journal of Palaeontology, Vol 141, Iss 1, Pp 1-26 (2022) |
op_relation |
https://doi.org/10.1186/s13358-022-00246-2 https://doaj.org/toc/1664-2376 https://doaj.org/toc/1664-2384 doi:10.1186/s13358-022-00246-2 1664-2376 1664-2384 https://doaj.org/article/25896799b8874b42a0aa89df2d122c95 |
op_doi |
https://doi.org/10.1186/s13358-022-00246-2 |
container_title |
Swiss Journal of Palaeontology |
container_volume |
141 |
container_issue |
1 |
_version_ |
1766156081415847936 |