Late Neogene evolution of modern deep-dwelling plankton
The fossil record of marine microplankton provides insights into the evolutionary drivers which led to the origin of modern deep-water plankton, one of the largest components of ocean biomass. We use global abundance and biogeographic data, combined with depth habitat reconstructions, to determine t...
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European Geosciences Union
2022
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:148329 2023-05-15T18:00:36+02:00 Late Neogene evolution of modern deep-dwelling plankton Boscolo Galazzo, Flavia Jones, Amy Dunkley Jones, Tom Crichton, Katherine A. Wade, Bridget S. Pearson, Paul N. 2022-02-08 application/pdf https://orca.cardiff.ac.uk/id/eprint/148329/ https://doi.org/10.5194/bg-19-743-2022 https://orca.cardiff.ac.uk/id/eprint/148329/1/PP_bg-19-743-2022.pdf en eng European Geosciences Union https://orca.cardiff.ac.uk/id/eprint/148329/1/PP_bg-19-743-2022.pdf Boscolo Galazzo, Flavia https://orca.cardiff.ac.uk/view/cardiffauthors/A2268168I.html orcid:0000-0002-5146-5321 orcid:0000-0002-5146-5321, Jones, Amy, Dunkley Jones, Tom, Crichton, Katherine A. https://orca.cardiff.ac.uk/view/cardiffauthors/A22620795.html, Wade, Bridget S. and Pearson, Paul N. https://orca.cardiff.ac.uk/view/cardiffauthors/A0179150.html orcid:0000-0003-4628-9818 orcid:0000-0003-4628-9818 2022. Late Neogene evolution of modern deep-dwelling plankton. Biogeosciences 19 (3) , pp. 743-762. 10.5194/bg-19-743-2022 https://doi.org/10.5194/bg-19-743-2022 file https://orca.cardiff.ac.uk/148329/1/PP_bg-19-743-2022.pdf doi:10.5194/bg-19-743-2022 cc_by CC-BY Article PeerReviewed 2022 ftunivcardiff https://doi.org/10.5194/bg-19-743-2022 2022-11-10T23:42:57Z The fossil record of marine microplankton provides insights into the evolutionary drivers which led to the origin of modern deep-water plankton, one of the largest components of ocean biomass. We use global abundance and biogeographic data, combined with depth habitat reconstructions, to determine the environmental mechanisms behind speciation in two groups of pelagic microfossils over the past 15 Myr. We compare our microfossil datasets with water column profiles simulated in an Earth system model. We show that deep-living planktonic foraminiferal (zooplankton) and calcareous nannofossil (mixotroph phytoplankton) species were virtually absent globally during the peak of the middle Miocene warmth. The evolution of deep-dwelling planktonic foraminifera started from subpolar–mid-latitude species, during late Miocene cooling, via allopatry. Deep-dwelling species subsequently spread towards lower latitudes and further diversified via depth sympatry, establishing modern communities stratified hundreds of metres down the water column. Similarly, sub-euphotic zone specialist calcareous nannofossils become a major component of tropical and sub-tropical assemblages during the latest Miocene to early Pliocene. Our model simulations suggest that increased organic matter and oxygen availability for planktonic foraminifera, and increased nutrients and light penetration for nannoplankton, favoured the evolution of new deep-water niches. These conditions resulted from global cooling and the associated increase in the efficiency of the biological pump over the last 15 Myr. Article in Journal/Newspaper Planktonic foraminifera Cardiff University: ORCA (Online Research @ Cardiff) Biogeosciences 19 3 743 762 |
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Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
English |
description |
The fossil record of marine microplankton provides insights into the evolutionary drivers which led to the origin of modern deep-water plankton, one of the largest components of ocean biomass. We use global abundance and biogeographic data, combined with depth habitat reconstructions, to determine the environmental mechanisms behind speciation in two groups of pelagic microfossils over the past 15 Myr. We compare our microfossil datasets with water column profiles simulated in an Earth system model. We show that deep-living planktonic foraminiferal (zooplankton) and calcareous nannofossil (mixotroph phytoplankton) species were virtually absent globally during the peak of the middle Miocene warmth. The evolution of deep-dwelling planktonic foraminifera started from subpolar–mid-latitude species, during late Miocene cooling, via allopatry. Deep-dwelling species subsequently spread towards lower latitudes and further diversified via depth sympatry, establishing modern communities stratified hundreds of metres down the water column. Similarly, sub-euphotic zone specialist calcareous nannofossils become a major component of tropical and sub-tropical assemblages during the latest Miocene to early Pliocene. Our model simulations suggest that increased organic matter and oxygen availability for planktonic foraminifera, and increased nutrients and light penetration for nannoplankton, favoured the evolution of new deep-water niches. These conditions resulted from global cooling and the associated increase in the efficiency of the biological pump over the last 15 Myr. |
format |
Article in Journal/Newspaper |
author |
Boscolo Galazzo, Flavia Jones, Amy Dunkley Jones, Tom Crichton, Katherine A. Wade, Bridget S. Pearson, Paul N. |
spellingShingle |
Boscolo Galazzo, Flavia Jones, Amy Dunkley Jones, Tom Crichton, Katherine A. Wade, Bridget S. Pearson, Paul N. Late Neogene evolution of modern deep-dwelling plankton |
author_facet |
Boscolo Galazzo, Flavia Jones, Amy Dunkley Jones, Tom Crichton, Katherine A. Wade, Bridget S. Pearson, Paul N. |
author_sort |
Boscolo Galazzo, Flavia |
title |
Late Neogene evolution of modern deep-dwelling plankton |
title_short |
Late Neogene evolution of modern deep-dwelling plankton |
title_full |
Late Neogene evolution of modern deep-dwelling plankton |
title_fullStr |
Late Neogene evolution of modern deep-dwelling plankton |
title_full_unstemmed |
Late Neogene evolution of modern deep-dwelling plankton |
title_sort |
late neogene evolution of modern deep-dwelling plankton |
publisher |
European Geosciences Union |
publishDate |
2022 |
url |
https://orca.cardiff.ac.uk/id/eprint/148329/ https://doi.org/10.5194/bg-19-743-2022 https://orca.cardiff.ac.uk/id/eprint/148329/1/PP_bg-19-743-2022.pdf |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/148329/1/PP_bg-19-743-2022.pdf Boscolo Galazzo, Flavia https://orca.cardiff.ac.uk/view/cardiffauthors/A2268168I.html orcid:0000-0002-5146-5321 orcid:0000-0002-5146-5321, Jones, Amy, Dunkley Jones, Tom, Crichton, Katherine A. https://orca.cardiff.ac.uk/view/cardiffauthors/A22620795.html, Wade, Bridget S. and Pearson, Paul N. https://orca.cardiff.ac.uk/view/cardiffauthors/A0179150.html orcid:0000-0003-4628-9818 orcid:0000-0003-4628-9818 2022. Late Neogene evolution of modern deep-dwelling plankton. Biogeosciences 19 (3) , pp. 743-762. 10.5194/bg-19-743-2022 https://doi.org/10.5194/bg-19-743-2022 file https://orca.cardiff.ac.uk/148329/1/PP_bg-19-743-2022.pdf doi:10.5194/bg-19-743-2022 |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-19-743-2022 |
container_title |
Biogeosciences |
container_volume |
19 |
container_issue |
3 |
container_start_page |
743 |
op_container_end_page |
762 |
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1766169760885637120 |