On the accuracy of paleodiversity reconstructions: a case study in Antarctic Neogene radiolarians
The deep-sea Cenozoic planktonic microfossil record has the unique characteristics of continuously well-preserved populations of most species, with virtually unlimited sample size, and therefore constitutes, in principle, a major resource for macroevolutionary research. Antarctic Neogene radiolarian...
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1666/12016 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0094837300001330 |
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crcambridgeupr:10.1666/12016 2024-09-09T19:04:15+00:00 On the accuracy of paleodiversity reconstructions: a case study in Antarctic Neogene radiolarians Renaudie, Johan Lazarus, David B. 2013 http://dx.doi.org/10.1666/12016 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0094837300001330 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Paleobiology volume 39, issue 3, page 491-509 ISSN 0094-8373 1938-5331 journal-article 2013 crcambridgeupr https://doi.org/10.1666/12016 2024-06-19T04:03:44Z The deep-sea Cenozoic planktonic microfossil record has the unique characteristics of continuously well-preserved populations of most species, with virtually unlimited sample size, and therefore constitutes, in principle, a major resource for macroevolutionary research. Antarctic Neogene radiolarians in particular, are diverse, abundant and consistently well-preserved and evolved rapidly. This fauna is, in theory, a near-perfect testing ground for paleodiversity reconstructions. In this study we determined the diversity history of these faunas from a new quantitative, taxonomically complete data set from Neogene and Quaternary sections at several Antarctic sites. The pattern retrieved by our whole-fauna data set shows a significant, largely extinctionless ecological change in faunal composition and decrease in the evenness of species' abundances during the late Miocene, followed 3 Myr later, at around 5 Ma, by a significant drop in diversity. We tentatively associate this ecological event with a synchronous, regional change in the composition of the primary producers, but as yet cannot identify any environmental changes associated with the later extinction. Further, our whole-fauna diversity history was compared to diversity computed from much less complete, biostratigraphically oriented studies of species' occurrences, compiled in the Neptune database and reconstructed by using subsampling methodologies. Comparison of our whole-fauna and subsampling-reconstructed diversity patterns shows that the first-order trends are the same in both, suggesting that, to some degree, such literature compilations can be used to explore diversity history of plankton. However, our results also highlight substantial errors and distortions in the reconstructed diversity which make it poorly suited to more-detailed studies (e.g., for comparison of diversity history with paleoenvironmental history). We conclude that detailed studies of plankton diversity, and particularly those attempting to understand the relation between diversity ... Article in Journal/Newspaper Antarc* Antarctic Cambridge University Press Antarctic Paleobiology 39 3 491 509 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
The deep-sea Cenozoic planktonic microfossil record has the unique characteristics of continuously well-preserved populations of most species, with virtually unlimited sample size, and therefore constitutes, in principle, a major resource for macroevolutionary research. Antarctic Neogene radiolarians in particular, are diverse, abundant and consistently well-preserved and evolved rapidly. This fauna is, in theory, a near-perfect testing ground for paleodiversity reconstructions. In this study we determined the diversity history of these faunas from a new quantitative, taxonomically complete data set from Neogene and Quaternary sections at several Antarctic sites. The pattern retrieved by our whole-fauna data set shows a significant, largely extinctionless ecological change in faunal composition and decrease in the evenness of species' abundances during the late Miocene, followed 3 Myr later, at around 5 Ma, by a significant drop in diversity. We tentatively associate this ecological event with a synchronous, regional change in the composition of the primary producers, but as yet cannot identify any environmental changes associated with the later extinction. Further, our whole-fauna diversity history was compared to diversity computed from much less complete, biostratigraphically oriented studies of species' occurrences, compiled in the Neptune database and reconstructed by using subsampling methodologies. Comparison of our whole-fauna and subsampling-reconstructed diversity patterns shows that the first-order trends are the same in both, suggesting that, to some degree, such literature compilations can be used to explore diversity history of plankton. However, our results also highlight substantial errors and distortions in the reconstructed diversity which make it poorly suited to more-detailed studies (e.g., for comparison of diversity history with paleoenvironmental history). We conclude that detailed studies of plankton diversity, and particularly those attempting to understand the relation between diversity ... |
format |
Article in Journal/Newspaper |
author |
Renaudie, Johan Lazarus, David B. |
spellingShingle |
Renaudie, Johan Lazarus, David B. On the accuracy of paleodiversity reconstructions: a case study in Antarctic Neogene radiolarians |
author_facet |
Renaudie, Johan Lazarus, David B. |
author_sort |
Renaudie, Johan |
title |
On the accuracy of paleodiversity reconstructions: a case study in Antarctic Neogene radiolarians |
title_short |
On the accuracy of paleodiversity reconstructions: a case study in Antarctic Neogene radiolarians |
title_full |
On the accuracy of paleodiversity reconstructions: a case study in Antarctic Neogene radiolarians |
title_fullStr |
On the accuracy of paleodiversity reconstructions: a case study in Antarctic Neogene radiolarians |
title_full_unstemmed |
On the accuracy of paleodiversity reconstructions: a case study in Antarctic Neogene radiolarians |
title_sort |
on the accuracy of paleodiversity reconstructions: a case study in antarctic neogene radiolarians |
publisher |
Cambridge University Press (CUP) |
publishDate |
2013 |
url |
http://dx.doi.org/10.1666/12016 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0094837300001330 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Paleobiology volume 39, issue 3, page 491-509 ISSN 0094-8373 1938-5331 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1666/12016 |
container_title |
Paleobiology |
container_volume |
39 |
container_issue |
3 |
container_start_page |
491 |
op_container_end_page |
509 |
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1809818247957053440 |