Coupled otolith and foraminifera oxygen and carbon stable isotopes evidence paleoceanographic changes and fish metabolic responses
Capturing the mechanisms leading to the local extirpation of a species in deep time is a challenge. Here, by combining stable oxygen and carbon isotopic analyses on benthic and planktonic foraminifera and the otoliths of pelagic and benthic fish species, we reveal the paleoceanographic regime shifts...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2024
|
Subjects: | |
Online Access: | https://doi.org/10.5194/bg-21-3869-2024 https://doaj.org/article/d30d41c504d242be959060147f0741ca |
id |
ftdoajarticles:oai:doaj.org/article:d30d41c504d242be959060147f0741ca |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:d30d41c504d242be959060147f0741ca 2024-09-15T18:31:05+00:00 Coupled otolith and foraminifera oxygen and carbon stable isotopes evidence paleoceanographic changes and fish metabolic responses K. Agiadi I. Vasiliev G. Butiseacă G. Kontakiotis D. Thivaiou E. Besiou S. Zarkogiannis E. Koskeridou A. Antonarakou A. Mulch 2024-08-01T00:00:00Z https://doi.org/10.5194/bg-21-3869-2024 https://doaj.org/article/d30d41c504d242be959060147f0741ca EN eng Copernicus Publications https://bg.copernicus.org/articles/21/3869/2024/bg-21-3869-2024.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-21-3869-2024 1726-4170 1726-4189 https://doaj.org/article/d30d41c504d242be959060147f0741ca Biogeosciences, Vol 21, Pp 3869-3881 (2024) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2024 ftdoajarticles https://doi.org/10.5194/bg-21-3869-2024 2024-09-02T15:34:37Z Capturing the mechanisms leading to the local extirpation of a species in deep time is a challenge. Here, by combining stable oxygen and carbon isotopic analyses on benthic and planktonic foraminifera and the otoliths of pelagic and benthic fish species, we reveal the paleoceanographic regime shifts that took place in the eastern Mediterranean from 7.2 to 6.5 Ma, in the precursor phase to the Messinian salinity crisis, and discuss the fish response to these events. The stepwise restriction of the Mediterranean–Atlantic gateway impacted the metabolism of fishes in the Mediterranean, particularly those dwelling in the lower, deeper part of the water column. An important shift in the Mediterranean paleoceanographic conditions took place between 6.951 and 6.882 Ma, from predominantly temperature to salinity control, which was probably related to stratification of the water column. A regime shift at 6.814 Ma, due to changes in the influx, source and/or preservation of organic matter, led to pelagic–benthic decoupling of the fish fauna. At that time, the oxygen isotopic composition of benthic fish otoliths reflects higher salinity in the lower part of the water column that is accompanied by a rapid fluctuation in the carbon isotopic composition (a proxy for the metabolic rate), ultimately leading to the local extirpation of the benthic species. Overall, our results confirm that otolith stable oxygen and carbon isotope ratios are reliable proxies for paleoceanographic studies and, when combined with those of foraminifera, can reveal life history changes and migration patterns of teleost fishes in deep time. Article in Journal/Newspaper Planktonic foraminifera Directory of Open Access Journals: DOAJ Articles Biogeosciences 21 16 3869 3881 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 K. Agiadi I. Vasiliev G. Butiseacă G. Kontakiotis D. Thivaiou E. Besiou S. Zarkogiannis E. Koskeridou A. Antonarakou A. Mulch Coupled otolith and foraminifera oxygen and carbon stable isotopes evidence paleoceanographic changes and fish metabolic responses |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Capturing the mechanisms leading to the local extirpation of a species in deep time is a challenge. Here, by combining stable oxygen and carbon isotopic analyses on benthic and planktonic foraminifera and the otoliths of pelagic and benthic fish species, we reveal the paleoceanographic regime shifts that took place in the eastern Mediterranean from 7.2 to 6.5 Ma, in the precursor phase to the Messinian salinity crisis, and discuss the fish response to these events. The stepwise restriction of the Mediterranean–Atlantic gateway impacted the metabolism of fishes in the Mediterranean, particularly those dwelling in the lower, deeper part of the water column. An important shift in the Mediterranean paleoceanographic conditions took place between 6.951 and 6.882 Ma, from predominantly temperature to salinity control, which was probably related to stratification of the water column. A regime shift at 6.814 Ma, due to changes in the influx, source and/or preservation of organic matter, led to pelagic–benthic decoupling of the fish fauna. At that time, the oxygen isotopic composition of benthic fish otoliths reflects higher salinity in the lower part of the water column that is accompanied by a rapid fluctuation in the carbon isotopic composition (a proxy for the metabolic rate), ultimately leading to the local extirpation of the benthic species. Overall, our results confirm that otolith stable oxygen and carbon isotope ratios are reliable proxies for paleoceanographic studies and, when combined with those of foraminifera, can reveal life history changes and migration patterns of teleost fishes in deep time. |
format |
Article in Journal/Newspaper |
author |
K. Agiadi I. Vasiliev G. Butiseacă G. Kontakiotis D. Thivaiou E. Besiou S. Zarkogiannis E. Koskeridou A. Antonarakou A. Mulch |
author_facet |
K. Agiadi I. Vasiliev G. Butiseacă G. Kontakiotis D. Thivaiou E. Besiou S. Zarkogiannis E. Koskeridou A. Antonarakou A. Mulch |
author_sort |
K. Agiadi |
title |
Coupled otolith and foraminifera oxygen and carbon stable isotopes evidence paleoceanographic changes and fish metabolic responses |
title_short |
Coupled otolith and foraminifera oxygen and carbon stable isotopes evidence paleoceanographic changes and fish metabolic responses |
title_full |
Coupled otolith and foraminifera oxygen and carbon stable isotopes evidence paleoceanographic changes and fish metabolic responses |
title_fullStr |
Coupled otolith and foraminifera oxygen and carbon stable isotopes evidence paleoceanographic changes and fish metabolic responses |
title_full_unstemmed |
Coupled otolith and foraminifera oxygen and carbon stable isotopes evidence paleoceanographic changes and fish metabolic responses |
title_sort |
coupled otolith and foraminifera oxygen and carbon stable isotopes evidence paleoceanographic changes and fish metabolic responses |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/bg-21-3869-2024 https://doaj.org/article/d30d41c504d242be959060147f0741ca |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Biogeosciences, Vol 21, Pp 3869-3881 (2024) |
op_relation |
https://bg.copernicus.org/articles/21/3869/2024/bg-21-3869-2024.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-21-3869-2024 1726-4170 1726-4189 https://doaj.org/article/d30d41c504d242be959060147f0741ca |
op_doi |
https://doi.org/10.5194/bg-21-3869-2024 |
container_title |
Biogeosciences |
container_volume |
21 |
container_issue |
16 |
container_start_page |
3869 |
op_container_end_page |
3881 |
_version_ |
1810472683635212288 |